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ie8及以上

陈酿！四年陈的STM32F103外设测试代码！希望对你有帮助~~~ 精华  

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Dylan疾风闪电 发布时间：2016-1-7 14:26
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Dylan疾风闪电 回答时间：2016-1-7 15:06:27
  1. /**
    1 ]- s9 z& B4 U7 Z# P& ^3 R" n
  2.   ******************************************************************************; i8 R9 |( G& d& I2 o
  3.   * @file /DEBUG.h
    2 h6 r7 Y% n1 \% ?  x; L
  4.   * @author    xd.wu
    * H' z: w( P) c' q1 j# u. M/ E
  5.   * @version   V1.0
    / U: y$ Q& ?  }5 F4 [8 k
  6.   * @date     2012-4-19
    7 j0 I7 p& q7 e" n' ?
  7.   * @brief    DEBUG：
    0 N/ [- i9 T. k/ O+ T
  8.   ******************************************************************************% h. {) }3 L0 g+ D+ m5 A" n0 v4 B; A8 {, f
  9.   *用途：方便差错
    % S6 u0 o8 R" z+ D% z
  10.   */8 N& K( p& ^) R6 n! @. J
  11.   /*实例应用步骤：; D1 Q, T# y( `, p' `% R
  12.   //1."main.cpp"调用fmain()修改以下函数
    3 ]$ f) D  N0 Y0 J; ?. J
  13.   ' i- K2 t2 |% P1 u- f# |
  14.   #define __DEBUG_Example; ^- X3 Z8 z& t6 d. `; a2 F
  15.   void assert_failed(uint8_t* file, uint32_t line); O1 \; k9 ^5 E7 G
  16.   {
    6 u, F, F0 d0 B
  17.       // User can add his own implementation to report the file name and line number,
    & K4 K& b2 U0 z, {2 a5 T& ~7 R/ R
  18.          ex: printf("Wrong parameters value: file %s on line %d\r\n", file, line)
    . |6 p0 n5 }3 B  u* u% l
  19.     #ifdef __DEBUG_Example
    - Y5 W& C8 {2 n$ C8 E. D' h
  20.       printf("Wrong parameters value: file %s on line %d\r\n", file, line);
    2 G2 p9 c: _; I4 ~! Y+ E, ~! O
  21.     #else
    ) P& w7 b) r3 j8 u
  22.       // Infinite loop
    3 @: ~; B2 [* V- T' C
  23.       while (1)  c6 u' x: g4 J8 \# \
  24.       {
    # [, L. ]. T) R/ o; G
  25.       }
    / c5 f+ d4 O  n. W
  26.     #endif
    7 q- {* q  B; P3 f, ?4 S  y: H
  27.   }
    4 |$ b6 g3 s; K& r
  28. 0 [0 h) p8 ]3 `* a
  29.   //2.PC端USART配置! s0 L* z$ [5 _. u) O
  30.    - Connect a null-modem female/female RS232 cable between the DB9 connector
    . s2 p& ~% o) f7 i) `( W8 r
  31.         CN2(USART1) and PC serial port.
    4 _6 I* a* F, ]
  32.    
    , q* `! S$ g0 V0 f
  33.   5 U0 |0 C7 n6 n; C: k$ [0 N: t
  34.    - Hyperterminal configuration:
    % i  h2 Q6 c7 B' k$ _
  35.       - Word Length = 8 Bits- ]1 o9 [+ }5 y, c: ?% |$ B6 ~3 B
  36.       - One Stop Bit
    8 I- Z+ `1 @, h3 ?: P" J
  37.       - No parity- w% r& t2 O' p; V2 q7 `
  38.       - BaudRate = 115200 baud% X3 y1 b: ~' p4 G, Y! m
  39.       - flow control: None
    " z+ F. L1 t# ~
  40. ' Y% h5 D7 O3 _7 \+ _: O
  41.   //3.Terminal I/O中观察: E( t# V+ }5 q6 X
  42.   显示printf的字符串和错误信息2 V' z" v# v4 Z9 v
  43.   STM32F10x Firmware Library compiled in DEBUG mode...
    5 v7 g5 W6 n, n
  44.   ...Run-time checking enabled8 A( d4 E  w6 _, a6 m

  45. ' {7 w7 Y2 Z, U+ t* D& Z0 M5 L1 y
  46.   Wrong parameters value: file D:\xd_ST_ARM\(中文名乱码)\STM32F10x_StdPeriph_Driver\src\stm32f10x_rcc.cpp on line 1136/ m  Y% ]' @' I7 c$ m
  47.   */
    8 [* E# `" ]  J1 O; c
  48. 6 Y. x! S+ q2 c* M
  49. #ifndef __DEBUG_H  X5 J% q% B2 O# ?/ E: e4 ^; W
  50. #define __DEBUG_H
    6 c" u& k  r5 y3 O. `
  51. /* Includes ------------------------------------------------------------------*/- M* ]/ F* @& K6 i& \
  52. #include "std32periph.h"$ R, U. J% O) D$ o& ~
  53. #include <stdio.h>
    4 _2 c- U+ @; K$ Y

  54. ' x4 u8 q7 q- w/ A  v) B
  55. /* Private typedef -----------------------------------------------------------*/
    / i& g+ U# `8 v: f/ h
  56. /* Private define ------------------------------------------------------------*/. e! u1 h' f% G' V
  57. #ifdef __GNUC__0 a. ~+ s: G) H8 B- \" |
  58.   /* With GCC/RAISONANCE, small printf (option LD Linker->Libraries->Small printf/ V+ y8 P/ Y4 C1 ^; V2 K2 q
  59.      set to 'Yes') calls __io_putchar() */1 C1 o9 u$ N0 z* s2 _  ~
  60.   #define PUTCHAR_PROTOTYPE int __io_putchar(int ch)
    + O7 B6 m2 f) S: Q
  61. #else' s% b% u7 t7 U: s* I1 q. j; y1 ~
  62.   #define PUTCHAR_PROTOTYPE int fputc(int ch, FILE *f)
    # G5 |: G: E$ s' g$ z7 K
  63. #endif /* __GNUC__ */
    9 J5 s, m" H! w% t; `0 |
  64. /* Private macro -------------------------------------------------------------*/
    6 {3 B; P# o4 D0 S; t. i6 z
  65. /* Private variables ---------------------------------------------------------*/
    . C2 L5 l+ Z# z7 X. }- b% o) r
  66. /* Private functions ---------------------------------------------------------*/) F7 r5 Q0 n+ u* Y1 ^* V

  67. 0 R! N: T7 P" z
  68. void fmain(void)
    . M0 l! u* J; y6 B+ c
  69. {
      O! W4 b; a  b+ o& Y. u
  70.   RCC_HSEConf(9);//72M8 f' y( c! b/ f  V  x7 s% E
  71.   & D0 _' m' p( P
  72.   RCC_APB2PeriphClockCmd(RCC_APB2Periph_USART1 | RCC_APB2Periph_GPIOA, ENABLE);
    5 f1 a* q- h1 U- g/ e# A" m1 H1 T
  73.   ' T- g% w# M6 q) Y# o! F% y" k. O
  74.   ! v, C* Y. j# a3 G
  75.   GPIO_InitTypeDef GPIO_InitStructure;
    & ^  ]. Z) ]. R1 u' x! ]' l
  76.   /* Configure USART1 Tx (PA.09) as alternate function push-pull */
    ! q1 t: t: G3 e  G7 s, o
  77.   GPIO_InitStructure.GPIO_Pin = GPIO_Pin_9;
    % _( q6 T8 f1 e" _
  78.   GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;4 {. T( F+ ^2 K5 `$ Y+ n/ ]. y
  79.   GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;4 H: Y+ j8 M# I
  80.   GPIO_Init(GPIOA, &GPIO_InitStructure);
    # ]# a: \3 ?7 K; p& W7 E
  81.   /* Configure USART1 Rx (PA.10) as input floating */' n5 N/ ~) g4 U% F+ y4 {# J% L
  82.   GPIO_InitStructure.GPIO_Pin = GPIO_Pin_10;
    6 u& m; J% n2 i! i! F
  83.   GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING;
    % O/ B2 L$ ^/ L
  84.   GPIO_Init(GPIOA, &GPIO_InitStructure);; K: B* f5 ^# [9 f
  85.   
    , |  ~. n' ?4 [, F& q( Q9 \( n( y5 ~
  86. / a$ |. C( ^" q9 G( |
  87. /* USART1 configuration ------------------------------------------------------*/) g/ V/ ^  g6 M) G; L% J! V" l
  88.   /* USART1 configured as follow:
    " ^% k8 M4 |3 ?% h7 Z7 p
  89.         - BaudRate = 115200 baud  3 `1 y) r! N2 x
  90.         - Word Length = 8 Bits3 N# h& n9 F# {0 ^! a9 K" z
  91.         - One Stop Bit, P% j2 w4 p  v& B7 a$ `" c! D
  92.         - No parity8 Q- v) q1 }# c+ s; y- x) E$ Z! J3 g6 D7 i
  93.         - Hardware flow control disabled (RTS and CTS signals)3 H, r, U1 _$ k# w1 K9 |5 B& j
  94.         - Receive and transmit enabled
    ) y9 M. e& F7 m0 j1 ?+ l1 H( V
  95.   */* ?; x$ t4 o+ c5 d
  96.   USART_InitTypeDef USART_InitStructure;
    ) O1 ]9 O8 D! j" h1 a( g: }
  97.   USART_InitStructure.USART_BaudRate = 115200;
    9 T2 y- y' d$ m6 G# {) q6 L& W0 [8 s
  98.   USART_InitStructure.USART_WordLength = USART_WordLength_8b;
    $ I2 ?! i) v) t6 r$ m, W2 Q
  99.   USART_InitStructure.USART_StopBits = USART_StopBits_1;/ L& ?; _" \! U' J! R
  100.   USART_InitStructure.USART_Parity = USART_Parity_No;
    1 `% o# `- u1 W! V
  101.   USART_InitStructure.USART_HardwareFlowControl = USART_HardwareFlowControl_None;
    4 r6 e! _! Z7 {( h* Y2 f' r
  102.   USART_InitStructure.USART_Mode = USART_Mode_Rx | USART_Mode_Tx;; j# }" J$ k, I9 L
  103.   USART_Init(USART1, &USART_InitStructure);' X- z4 J: i! k' J- a1 k4 K
  104.   USART_Cmd(USART1, ENABLE);0 ^8 m' U0 n8 r8 p, S
  105.   , g( v+ n' b+ J) @7 ]; M
  106.   //在PC端串口助手显示2 z; J" d" V; J% c7 [0 f4 t
  107.   u8 buff[] = "\r\n STM32F10x Firmware Library compiled in DEBUG mode... \n\r...Run-time checking enabled  \n\r";. U6 J( J+ U% h- S5 M) N, s, q: Y
  108.   u8 *p = buff;/ l- J# q. N, i1 `& F
  109.   u16 SR = USART1->SR;# O( N/ M* m% n! f
  110.   #define ARR_SIZE(a) (sizeof(a)/sizeof(a[0]))//返回数组元素的个数( p. g2 z5 k- {7 P' S% u( E$ z
  111.   u8 len = ARR_SIZE(buff);
    ) R3 ~/ x. m5 R0 @1 _* S5 C0 e
  112.   for(u8 i=0; i<len; i++)
    3 a6 C* f  j0 Q" y+ u. O
  113.   {1 X- t) m" s& a
  114.     USART1->DR = *p++;' B3 d5 ~& c9 o+ k
  115.     while ((USART1->SR & 0x0040) == 0);# J. O* z; _/ S- f; O
  116.   }* I: W- l+ K9 k$ X7 l0 V7 L
  117.   6 V& W3 p' s4 \# h2 e$ G( e
  118.   //在IAR软件的输出窗口显示
      s5 p+ a( L2 t8 L) j/ P% l
  119.   printf("\r\n STM32F10x Firmware Library compiled in DEBUG mode... \n\r");: t1 g5 r" S, \; {" y: t4 ]
  120.   printf("...Run-time checking enabled  \n\r");# t# ?' D! ]' G' x  Z' q, X; |
  121.   
    8 Q8 |* X% A/ Z" i& G( s
  122.   //产生错误信息：错误的SPI时钟使能' a% X8 G! X8 h; I/ C
  123.   /* Simulate wrong parameter passed to library function ---------------------*/
    ' \1 ^  ?6 K. d( h
  124.   /* To enable SPI1 clock, RCC_APB2PeriphClockCmd function must be used and
    4 M6 W7 [, S' h1 n2 Y3 J; u( S
  125.      not RCC_APB1PeriphClockCmd*/' G' p% P9 |: O+ U. p) _
  126.   RCC_APB1PeriphClockCmd(RCC_APB2Periph_SPI1, ENABLE);& V% s. Y3 L; e' K3 T1 ^* e
  127.   ( z4 ~. j" S7 Z; N& `& Y& V8 Y
  128.   /* Some member of GPIOA_InitStructure structure are not initialized */
    8 B6 E: _9 _* E8 S0 L
  129.   GPIO_InitStructure.GPIO_Pin = GPIO_Pin_6;9 d# {+ u% w3 x$ i
  130.   GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP;! M# B- p6 U6 A# B4 l1 w, ]
  131.   /* GPIOA_InitStructure.GPIO_Speed = GPIO_Speed_50MHz; */' w& P1 P4 ?, F+ v! n0 w& V: U
  132.   GPIO_Init(GPIOA, &GPIO_InitStructure);
    1 v) t% v( |# \5 R9 R! W
  133. }+ d: h& k3 `( S, s0 Z2 s% ~

  134. 9 [/ J+ R% U) h8 T0 B
  135. #endif
    0 v& Y; W. s: h' \7 X* a
  136. /******************* (C) COPYRIGHT 2008 STMicroelectronics *****END OF FILE****/2 y' C) s2 V( H
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Dylan疾风闪电 回答时间：2016-1-7 15:06:46
  1. /**
    ! B# [/ `5 `3 V* d8 O6 |
  2.   ******************************************************************************8 k3 Z/ R; D( Q
  3.   * @file /DMA_ADC_TIM1.h' F: O3 u9 e+ ?( g; l
  4.   * @author    xd.wu
    * n# o! q( m, h) u3 q8 D& O) q" Z: k
  5.   * @version   V1.0
    7 X6 E9 a3 d4 T. Y- B
  6.   * @date     2012-4-14
    & I" k* G# i/ Z8 P5 g9 B
  7.   * @brief    DMA：通过DMA将ADC采样 反映为TIM1_CH1的脉冲频率(CCR1)9 y! y& u" _, h- m5 f% s0 [
  8.   use a DMA channel to transfer continuously a data from a peripheral (ADC1) $ P0 J+ u* \3 I% z4 K9 A
  9.   to another peripheral (TIM1) supporting DMA transfer.' P1 ^! c1 t* O4 b7 [4 ]& _
  10.   ******************************************************************************$ C9 t% b- @8 s
  11.   *用途：可改为ADC->DR 直接通过 USART->DR等6 L. ?# P3 E' i* H
  12.   */
    ' p3 s  o' [1 g4 o) _
  13.   /*实例应用步骤：
    : P; _( c. H1 y
  14.   //1."main.cpp"调用fmain()
    , A" s7 z& ~! m
  15.   1 g: L- x  o; e  a2 r0 C1 x
  16.   //2.Watch中观察
    ! l% V) `; G  e) v- d
  17.   TIM1_CCR1
    $ [: ?, h' S3 N2 k
  18.   ADC1_DR/ q5 I( |3 D: a" F# z5 g! l7 y
  19.   */
    1 X9 s/ W. G) M+ N

  20. + l& A; k* b9 F
  21. #ifndef __DMA_ADC_TIM1_H8 \7 ?/ j2 F' r
  22. #define __DMA_ADC_TIM1_H
    ' `$ A& r& F: i& d: x" I2 V  |
  23. /* Includes ------------------------------------------------------------------*/: e2 l5 l# Q' O, |) P7 y' D
  24. #include "std32periph.h"
    3 a% m8 A9 Q: U4 z7 k. ?; U
  25. / m6 C7 P- _- Q& U: v; j; e" {1 s
  26. /* Private typedef -----------------------------------------------------------*/
    ) C$ n7 w+ H+ v8 a3 Q( p: b6 o
  27. /* Private define ------------------------------------------------------------*// \% T' o; T, K
  28. #define ADC1_DR_Address     0x4001244C
    ; |0 f$ B3 }" v. o4 A$ i- i$ u
  29. #define TIM1_CCR1_Address   0x40012C34$ X' {. o, e& i3 s
  30. /* Private macro -------------------------------------------------------------*/
    % ]4 J% w8 ^6 p0 N' ^. P! A
  31. /* Private variables ---------------------------------------------------------*/2 k+ {2 d! n" v5 {
  32. /* Private functions ---------------------------------------------------------*/
    . x/ g: v' r. B/ g: f& S
  33. $ B6 {  A  W' Z4 ?3 f/ ^* ?" m
  34. void fmain(void)% Z% G7 ?$ Y! M, {8 U7 e7 m
  35. {/ P8 O: A: F/ m( O8 X$ w
  36.   RCC_HSEConf(7);//56M
    : Z; l  A1 y" a

  37. 7 _9 h2 t4 c$ [8 I' G& D
  38.   RCC_AHBPeriphClockCmd(RCC_AHBPeriph_DMA1, ENABLE);
    1 ]% |. E1 M) r1 c
  39.   RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA | RCC_APB2Periph_GPIOC |
      h7 U# u. ?; ~2 [3 Y- C
  40.                          RCC_APB2Periph_ADC1 | RCC_APB2Periph_TIM1, ENABLE);2 g( A+ g7 ^, X% Y6 ^$ e# h- w
  41.   //复位ADC& ?: U. L/ u- m6 M
  42.   RCC_APB2PeriphResetCmd(RCC_APB2Periph_ADC1, ENABLE);7 I; R  r' t* _( N
  43.   RCC_APB2PeriphResetCmd(RCC_APB2Periph_ADC1, DISABLE);
    . H* k, f' K$ D9 \) d: Z1 ^+ I' p8 Y0 D  q
  44. 1 F1 i3 e7 @6 J/ k& t

  45. ! N( o0 {/ P/ ]2 q9 e3 j8 }
  46.   GPIO_InitTypeDef GPIO_InitStructure;6 I. |) d2 n: O
  47.   /* Configure TIM1 Channel1 output */
    4 i9 k8 o1 O5 O) s% ]+ X
  48.   GPIO_InitStructure.GPIO_Pin = GPIO_Pin_8;( \7 f% f" L6 ?; _5 R
  49.   GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;( ~% `2 Q9 a8 a! X, q4 R0 x
  50.   GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;! _0 b+ m; [4 k7 n- |
  51.   GPIO_Init(GPIOA, &GPIO_InitStructure);
    1 F. Z7 M# u: u5 _" E# F1 K1 [
  52.   /* Configure ADC Channel14 as analog input */: A0 a0 D) k, l+ r9 A5 o/ ?
  53.   GPIO_InitStructure.GPIO_Pin = GPIO_Pin_4  ;
    . r+ B! j/ A$ [
  54.   GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AIN;
    ! `% B: r( _) g4 l5 b) ^
  55.   GPIO_Init(GPIOC, &GPIO_InitStructure);9 k$ L4 X" Y( D

  56. 0 ~9 w! K  d. Q' p
  57. 5 @5 n4 o! D# o. v! S5 h( T
  58.   /* DMA1 Channel5 configuration ----------------------------------------------*/3 O/ X6 j$ S% R( v( w2 l
  59.   DMA_InitTypeDef           DMA_InitStructure;
    ; K5 B# S. G( e( b8 F" e
  60.   DMA_InitStructure.DMA_PeripheralBaseAddr = (u32)TIM1_CCR1_Address;" ~; a3 j; _8 Z1 f8 g" c! _
  61.   DMA_InitStructure.DMA_MemoryBaseAddr = (u32)ADC1_DR_Address;
      H) H  c3 ^$ l1 H/ u! J& ]
  62.   DMA_InitStructure.DMA_DIR = DMA_DIR_PeripheralDST;
    4 K5 T9 F$ B/ f$ ^3 Q4 D
  63.   DMA_InitStructure.DMA_BufferSize = 1;
    - J" Y; y8 h: H0 Y) G# q( w! k
  64.   DMA_InitStructure.DMA_PeripheralInc = DMA_PeripheralInc_Disable;& u0 Z) d. s8 c6 h
  65.   DMA_InitStructure.DMA_MemoryInc = DMA_MemoryInc_Disable;
    8 R# P2 S; a6 @8 B
  66.   DMA_InitStructure.DMA_PeripheralDataSize = DMA_PeripheralDataSize_HalfWord;
    * K5 G6 T6 \! S( o, [- j
  67.   DMA_InitStructure.DMA_MemoryDataSize = DMA_MemoryDataSize_HalfWord;; {$ e4 U+ u6 k0 \% {: U# P
  68.   DMA_InitStructure.DMA_Mode = DMA_Mode_Circular;
    ( n3 |" B2 b3 V! T. \5 z4 r6 a
  69.   DMA_InitStructure.DMA_Priority = DMA_Priority_High;& P: h" x  H, v5 p/ E
  70.   DMA_InitStructure.DMA_M2M = DMA_M2M_Disable;
      e( Z3 @! I  u4 u5 E9 _; ~1 g( I& K
  71.   DMA_Init(DMA1_Channel5, &DMA_InitStructure);
    ( f; B' z$ S3 k; {3 H8 _
  72.   /* Enable DMA1 Channel5 */
    * ^4 N5 P" @7 P; o6 g- v
  73.   DMA_Cmd(DMA1_Channel5, ENABLE);' s  L! h0 B! ?( q

  74. ; E9 x4 W1 r3 l0 \4 p  T* z" ^
  75.   /* ADC1 configuration ------------------------------------------------------*/' B2 p+ N- l; O: X; [, m
  76.   ADC_InitTypeDef           ADC_InitStructure;6 S) s; j, A! \3 W" t2 C
  77.   ADC_InitStructure.ADC_Mode = ADC_Mode_Independent;
    1 A8 r0 S% e5 G2 a' N
  78.   ADC_InitStructure.ADC_ScanConvMode = DISABLE;
    ; i$ @& @! s1 Q+ I
  79.   ADC_InitStructure.ADC_ContinuousConvMode = ENABLE;
    8 [8 l) S; Q* w' ?, f! P
  80.   ADC_InitStructure.ADC_ExternalTrigConv = ADC_ExternalTrigConv_None;
    4 t+ X9 A2 K/ f8 V
  81.   ADC_InitStructure.ADC_DataAlign = ADC_DataAlign_Right;- a/ X+ D! |6 O. p, \: A
  82.   ADC_InitStructure.ADC_NbrOfChannel = 1;
    3 Z/ ^" h8 o- i& u+ z! l
  83.   ADC_Init(ADC1, &ADC_InitStructure);. Z8 ^) J" u8 z+ ?1 K
  84.   ADC_RegularChannelConfig(ADC1, ADC_Channel_14, 1, ADC_SampleTime_55Cycles5);
    1 ?& o4 V* ^  F% H% ]% K

  85. ! l: @1 T  A5 B2 G, e
  86.   // TIM1_channel1：PWM mode、 TIM输出比较极性低、0x7F
    ( D6 d$ H5 y, i: z% n
  87.   // F = TIMxCLK/(PSC+1)/(ARR+1)  (56/2*2)/4=14M *0x7F
    ) @! c9 F$ }( a; `2 v% @3 v5 B
  88.   TIM1->PSC = 3;
    0 {$ @4 j+ J6 g' z
  89.   TIM1->ARR = 0xFF0;% {  b5 G) [! g* ]1 s" v
  90.   TIM1->CR1 = 0x0000;* U6 R8 b3 e1 M: ]2 l
  91.   TIM1->CCMR1 &= 0xFF00;: M% {# x9 S7 P/ F$ r+ K2 j. v
  92.   TIM1->CCMR1 |= 0x0060;
    ( r7 K2 o7 v) F1 N/ y
  93.   TIM1->CCER &= 0xFFF0;
    9 V5 K8 @& g1 Y/ P5 @! W1 D
  94.   TIM1->CCER |= 0x0001;
    2 h4 i6 U8 z7 n6 C' v/ C# ~! p: D
  95. / B) I0 u+ E. [3 F& a1 W
  96.   TIM_Cmd(TIM1, ENABLE);( a( ^! _% L4 ~- s1 i! s! t
  97.   TIM_CtrlPWMOutputs(TIM1, ENABLE);! E* ], I3 F! e$ e5 R$ V# ?
  98. ; G5 m+ u: o: W- `
  99.   TIM_DMACmd(TIM1, TIM_DMA_Update, ENABLE);# [1 z. H$ ]" _0 C. U: W
  100. " R4 S& i# u) c7 E7 f$ c+ v" T2 t
  101.   ADC_Cmd(ADC1, ENABLE);
    ! p$ H1 E& w2 g
  102.   ADC_ResetCalibration(ADC1);* L1 J$ J3 }- P( r
  103.   while(ADC_GetResetCalibrationStatus(ADC1));
    : P1 L$ F$ k& q0 f( ?
  104.   ADC_StartCalibration(ADC1);" d! @: F5 Z/ f4 P
  105.   while(ADC_GetCalibrationStatus(ADC1));
      R& Q8 F" d( @* Q
  106. ; w3 A$ V$ O! f' c9 h0 w" q1 @/ h
  107.   ADC_SoftwareStartConvCmd(ADC1, ENABLE);4 z3 N" x: A( _7 u, z) d
  108. }1 t9 _* R) C8 I
  109. 4 o" q9 H; ^$ N  c  _/ ~8 ]% V& v
  110. #endif
    2 E$ B( A0 f8 P! e2 [/ v
  111. /******************* (C) COPYRIGHT 2008 STMicroelectronics *****END OF FILE****/
    0 X, T2 T9 `" z4 [/ `
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Dylan疾风闪电 回答时间：2016-1-7 15:12:13
  1. /**
    # x7 ~( }* P3 W; L/ _0 }* H
  2.   ******************************************************************************9 D; G7 u/ T. J. f5 n6 W
  3.   * @file /DMA_FlashRAM.h
    % {7 O3 h1 O1 ]- r0 V5 m9 x
  4.   * @author    xd.wu/ M$ K9 L# R4 E
  5.   * @version   V1.0
    & c) O- h% Z/ [' j. u. K
  6.   * @date     2012-4-15* v0 `0 H/ J4 D/ F% U
  7.   * @brief    DMA：从ROM中拷贝数组常量到RAM中 (存在弊端，不复位的情况下可能 FAILED)& `$ G* m7 M$ X) V. y
  8.   ******************************************************************************
    5 E7 i! ]+ ~, z% Q
  9.   *用途：快速读取ROM8 G. v4 C% x& ]
  10.   */
    - l) L; T3 g3 Y! Q2 G9 |
  11.   /*实例应用步骤：
    : @$ ^2 k" @7 T5 M2 l: V
  12.   //1."main.cpp"调用fmain()
    % @. l. {2 ~9 ]' w4 f) E
  13.   : p1 ^7 i; G% ?6 s2 m3 J
  14.   //2."stm32f10x_it.cpp"拷贝
    # y# B: o6 u, D5 P8 O' J) D
  15.   extern vu16 CurrDataCounterEnd;6 p8 _# l" y6 r# I
  16.   void DMA1_Channel6_IRQHandler(void)1 C4 O* [, H: |4 X) r
  17.   {- [- s7 [$ A& \. g
  18.     if(DMA_GetITStatus(DMA1_IT_TC6))* z0 y& I9 i: ?$ |* a
  19.     {, i) m; {3 E# M8 r6 ?
  20.       CurrDataCounterEnd = DMA_GetCurrDataCounter(DMA1_Channel6);
    ; a, j3 Y: a6 Q; @* r. Z. [
  21.       DMA_ClearITPendingBit(DMA1_IT_GL6);" R3 ?  [+ M, P. H8 i
  22.     }
    8 d: B6 Y! x! C% Q" N% B" M
  23.   }1 A' g4 Y! E$ Y  C
  24. % d" {7 n0 t4 I; H" L
  25.   //3."stm32f10x_it.h"声明
    % C- F: D2 \: v
  26.   void DMA1_Channel6_IRQHandler(void);6 {1 Q& f  }" k0 |/ Y
  27. # f- a$ a4 u: s% V+ u9 \) y6 R
  28.   //4.Watch中观察
    ; d* y- S- E' l( f$ N
  29.   SRC_Const_Buffer[]: M8 r' M1 K$ m/ t1 M8 Y
  30.   DST_Buffer[]
    ; }1 F0 Z* ?( N7 g8 V+ x
  31.   */, M1 q& |# @5 |) v" R1 p
  32. . a  m6 q& P$ Q/ ^
  33. #ifndef __DMA_FLASHRAM_H4 J# D- ^, z7 z2 C( @9 A5 d4 R
  34. #define __DMA_FLASHRAM_H, o* E! s. E0 y0 b; ~
  35. /* Includes ------------------------------------------------------------------*/
    " \8 ~1 n$ p; c) A
  36. #include "std32periph.h"$ z" h6 G, Z5 s7 W& Q
  37. - l2 I2 }6 N# {4 {) T
  38. /* Private typedef -----------------------------------------------------------*/- d1 i  W* O2 `
  39. typedef enum {FAILED = 0, PASSED = !FAILED} TestStatus;- k  _- r6 \/ h' a/ x" c
  40. /* Private define ------------------------------------------------------------*/
    / C! n0 M9 F' p7 y5 b
  41. #define BufferSize  32% E$ e0 f# b- `+ Q4 A0 H
  42. /* Private macro -------------------------------------------------------------*/! Y$ x  `) a9 m  L% k4 c* }
  43. /* Private variables ---------------------------------------------------------*/* Y: {+ z/ h8 t0 a+ ~
  44. vu16 CurrDataCounterBegin = 0, CurrDataCounterEnd = 0;0 v4 p) e: k! u! I  l* ?
  45. volatile TestStatus TransferStatus = FAILED;! r" e  J9 e/ m4 c: q
  46. uc32 SRC_Const_Buffer[BufferSize]= {0x01020304,0x05060708,0x090A0B0C,0x0D0E0F10,
    , U! Q) ^; L  C- A1 }3 P
  47.                                     0x11121314,0x15161718,0x191A1B1C,0x1D1E1F20,
    ' R1 v3 Z+ J% M) w$ M9 p1 t
  48.                                     0x21222324,0x25262728,0x292A2B2C,0x2D2E2F30,# g( `' u+ S% x5 g
  49.                                     0x31323334,0x35363738,0x393A3B3C,0x3D3E3F40,  g: d+ y0 ^# s" i/ C, X/ E
  50.                                     0x41424344,0x45464748,0x494A4B4C,0x4D4E4F50,
    + \5 H6 {( |( e  b0 O& }
  51.                                     0x51525354,0x55565758,0x595A5B5C,0x5D5E5F60,
    ( J& E4 Y" o3 S. e% A( l/ }
  52.                                     0x61626364,0x65666768,0x696A6B6C,0x6D6E6F70,! K1 b: ~& z( X4 D
  53.                                     0x71727374,0x75767778,0x797A7B7C,0x7D7E7F80};
    2 l3 i/ a5 G. [! s
  54. u32 DST_Buffer[BufferSize];
    # {/ V' o% t* _
  55. /* Private functions ---------------------------------------------------------*/ 6 c+ i5 q9 K* P! f1 ]% r
  56. ( n7 N5 ]) U# }/ W9 W
  57. TestStatus Buffercmp(uc32* pBuffer, u32* pBuffer1, u16 BufferLength)
    - i* ^! W, d5 B( q8 m
  58. {+ N( k: }7 f* \5 b/ d- l
  59.   while(BufferLength--)- s% L1 S* z7 d, m1 y4 f
  60.   {7 z. f& j7 z$ Y$ d0 i4 m6 c, ?3 E2 h
  61.     if(*pBuffer != *pBuffer1)
    3 `8 N3 a* U$ f' l* c
  62.     {5 x- Z& P6 I; _8 `8 O& _1 Q2 \7 s
  63.       return FAILED;+ a, ~$ h# D" B
  64.     }/ \. M7 u$ o% |0 o5 Z8 x! C8 P1 g" s
  65.     : M* ?) y& p( p% H) j
  66.     pBuffer++;! w' F% j& G& v7 [
  67.     pBuffer1++;
    - B, |. ]. H3 e
  68.   }2 G1 B3 X% h# I( m1 C! b8 u
  69. - X9 D/ s- y% K7 H: g  s
  70.   return PASSED;  9 F: r2 G5 L" j/ {: @  ]; z2 m
  71. }
    % w# }& t; I/ f; K) w
  72. ( H4 c& I% c9 k9 m
  73. void fmain(void)
    3 F( T% ?2 T1 f% o/ m+ I
  74. {
    ; Y# H& J$ D- I. [2 {( Y+ S
  75.   RCC_HSEConf(9);//72M. u- Z" s& \8 Z
  76. - }* e  N1 @* K& i+ q  u
  77.   RCC_AHBPeriphClockCmd(RCC_AHBPeriph_DMA1, ENABLE);% c3 p% e( t+ d0 b
  78. / N* V! S: D9 K  }
  79.   NVIC_GroupSet(NVIC_PriorityGroup_0, DMA1_Channel6_IRQn, 0);
    ( ^1 |8 ]: \5 i5 ~8 s( w4 N; U
  80. 7 [: t- W4 \* ~# W0 O' I: E* I
  81.   /* DMA1 channel6 configuration */
    $ h8 D; c: W$ j  u
  82.   DMA_InitTypeDef  DMA_InitStructure;
    ' ~  n7 R1 K- x( Q/ G  A
  83.   DMA_InitStructure.DMA_PeripheralBaseAddr = (u32)SRC_Const_Buffer;% k* C. _' Z/ n, W* F
  84.   DMA_InitStructure.DMA_MemoryBaseAddr = (u32)DST_Buffer;
    ) V: J* `3 @# R5 i4 L
  85.   DMA_InitStructure.DMA_DIR = DMA_DIR_PeripheralSRC;$ {% k0 v3 d( z9 R, V" ?
  86.   DMA_InitStructure.DMA_BufferSize = BufferSize;% p9 B4 P  v  H- a- V9 g
  87.   DMA_InitStructure.DMA_PeripheralInc = DMA_PeripheralInc_Enable;
    : q8 ]6 V, m3 [/ q0 C0 L: _
  88.   DMA_InitStructure.DMA_MemoryInc = DMA_MemoryInc_Enable;- ?/ e/ ]/ J; r' c  I
  89.   DMA_InitStructure.DMA_PeripheralDataSize = DMA_PeripheralDataSize_Word;5 B5 {+ D2 s6 t
  90.   DMA_InitStructure.DMA_MemoryDataSize = DMA_MemoryDataSize_Word;
    3 R6 d; i- c  [, m
  91.   DMA_InitStructure.DMA_Mode = DMA_Mode_Normal;/ b  v" E4 v6 x2 @  j% S! I
  92.   DMA_InitStructure.DMA_Priority = DMA_Priority_High;
    % _, ^0 c# j5 i, L
  93.   DMA_InitStructure.DMA_M2M = DMA_M2M_Enable;6 R- J1 |0 h# ?
  94.   DMA_Init(DMA1_Channel6, &DMA_InitStructure);
    - g6 i* L% D6 r" ^! `) y3 q  m

  95. 8 T* Y3 `) _2 \
  96.   /* Enable DMA1 Channel6 Transfer Complete interrupt */$ C8 ^4 S$ N/ |  C
  97.   DMA_ITConfig(DMA1_Channel6, DMA_IT_TC, ENABLE);
    * `6 F4 R* R' g8 u% d6 q
  98. 7 d; Q# [  }" b5 h# D2 O3 T
  99.   /* Get Current Data Counter value before transfer begins */
    3 U% h* l8 z: G, j$ ^
  100.   CurrDataCounterBegin = DMA_GetCurrDataCounter(DMA1_Channel6);. W3 n4 f5 n0 L7 ?8 ?

  101. - S2 p# f, f; q4 K
  102.   /* Enable DMA1 Channel6 transfer */
    ; d& w" M9 h6 r
  103.   DMA_Cmd(DMA1_Channel6, ENABLE);
    % M# B0 J1 a8 s. e  }

  104. 2 F6 x( t& C3 R0 f1 k7 j- S
  105.   /* Wait the end of transmission */2 I8 U5 a' i: w# l7 x4 Z6 f4 {
  106.   while (CurrDataCounterEnd != 0)
    7 Y: S* h) ]" `; s
  107.   {  \- j, s% [" z
  108.   }
    ( q; _+ z& o$ c  o6 {4 o
  109.   
    # B0 D" X# ?& _! {; U2 ~9 L- [
  110.   /* Check if the transmitted and received data are equal */0 V+ h3 }* M8 b. d* c# I. x! V
  111.   TransferStatus = Buffercmp(SRC_Const_Buffer, DST_Buffer, BufferSize);
    ( D0 A2 _+ V" x5 u
  112.   /* TransferStatus = PASSED, if the transmitted and received data ' w3 `: {  B* q# W/ |: m
  113.      are the same */) A. y* T3 u- B2 M- @6 g, O( A
  114.   /* TransferStatus = FAILED, if the transmitted and received data # u+ S+ o0 I8 G+ F1 h
  115.      are different */1 W4 |9 [0 _1 ^* N# I
  116. }
    0 T& X8 ^) Q3 }* }- i
  117. 1 t2 Z9 F( I4 t9 _3 ~0 x9 D
  118. #endif, z, J- i% x9 r- ]' G
  119. /******************* (C) COPYRIGHT 2008 STMicroelectronics *****END OF FILE****/
    / M( t$ @9 _, x
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Dylan疾风闪电 回答时间：2016-1-7 15:12:29
  1. /**# J. V) z2 [' A. a
  2.   ******************************************************************************
    / Q; l7 F* p. o) }! P8 U
  3.   * @file /DMA_FSMC.h% i7 j. ~) v  K0 E% K* e
  4.   * @author    xd.wu9 s' Y' R8 P( Q' ^8 y
  5.   * @version   V1.0% U5 ^, m0 O3 r, M" k- q
  6.   * @date     2012-4-15
    3 V: T- c+ C8 R8 u8 x; C
  7.   * @brief    DMA：通过2个DMA通道，5 Q' i7 S! D/ B8 ]4 {) l
  8.   将32位数据SRC_Const_Buffer[]从FLASH_ROM写入外设FSMC的SRAM,
    # t6 [) P. j- c" O* o3 `
  9.   然后从外设FSMC的SRAM以8位DST_Buffer[]逐个读取数据存入 (存在弊端，不复位的情况下可能 卡while)
    - X1 }, w' L) u7 G# ^
  10.   use two DMA channels to transfer a word data buffer from Flash memory to external SRAM memory + H% g1 y$ r- V
  11.   and to recuperate the written data from external SRAM to be stored in internal SRAM.
    5 ~$ B% R! s6 M( s; d% D; Y
  12.   ******************************************************************************
    8 Y4 K# }7 c: E: ~
  13.   *用途：快速的将32位数据转换成8位数据
    7 w% N7 L! _2 Y) a* |
  14.   */
      Z. o& ?( |# @* r; p$ H4 O! p# N* {
  15.   /*实例应用步骤：7 _7 K. ]( [9 V9 P1 T7 Q  T0 @
  16.   //1."main.cpp"调用fmain()7 u( K1 r8 u: G# x9 B- y" O" I. d
  17. - L/ C5 y8 X" K3 D  F
  18.   //2.Watch中观察
    " _3 p) t$ o" G; c
  19.   SRC_Const_Buffer[]
    * l3 D9 v2 c- X, Y2 V( X* v
  20.   DST_Buffer[]* Z6 |  }2 K. A' @' ~: i
  21.   */5 U9 }! S/ F$ P% z, C  p  W  o
  22. . S0 y9 B9 J! {1 v1 x6 G# y
  23. #ifndef __DMA_FSMC_H
    3 I  z" B/ S4 e! k. |
  24. #define __DMA_FSMC_H% ?% H( `0 h2 r, D) F+ {' Z
  25. /* Includes ------------------------------------------------------------------*/5 a9 i9 m  r0 i) v
  26. #include "std32periph.h"6 e) b( p6 X3 J! e+ K1 P

  27. 5 a* e" j# Z" {* r2 ~+ n
  28. /* Private typedef -----------------------------------------------------------*/) Q+ ^- ?# v0 ?3 Y5 n" h2 F5 B- L. q
  29. typedef enum {FAILED = 0, PASSED = !FAILED} TestStatus;+ ?6 j. ]) X9 E" s
  30. /* Private define ------------------------------------------------------------*/, b% J6 K& U4 U8 p9 [4 s' j' `
  31. #define BufferSize  32
    , W$ D, g# u0 U- F1 G4 e8 \
  32. #define Bank1_SRAM3_ADDR    ((u32)0x68000000)9 _& X* O) v8 X6 p4 B, e
  33. /* Private macro -------------------------------------------------------------*/
    3 s) E% Z. U+ P6 q
  34. /* Private variables ---------------------------------------------------------*/
    % J1 _  Q+ S: W) Q
  35. volatile TestStatus TransferStatus;
    5 h/ m' m! b* V+ B: F9 A  h/ l
  36. uc32 SRC_Const_Buffer[BufferSize]= {0x01020304,0x05060708,0x090A0B0C,0x0D0E0F10,/ [) G5 L0 n% t' ?6 x
  37.                             0x11121314,0x15161718,0x191A1B1C,0x1D1E1F20,$ g( x6 d3 h, p! g
  38.                             0x21222324,0x25262728,0x292A2B2C,0x2D2E2F30,4 B: d( U7 }, C, N% i9 ]
  39.                             0x31323334,0x35363738,0x393A3B3C,0x3D3E3F40,
    5 B$ B( o+ d/ _
  40.                             0x41424344,0x45464748,0x494A4B4C,0x4D4E4F50,
    9 ^& Y8 Z: L% I8 n- t% Z
  41.                             0x51525354,0x55565758,0x595A5B5C,0x5D5E5F60,
    , p  W' }8 N0 E9 q& o: ^
  42.                             0x61626364,0x65666768,0x696A6B6C,0x6D6E6F70,
    4 Z2 b& F1 `, Q+ M. N% M& H
  43.                             0x71727374,0x75767778,0x797A7B7C,0x7D7E7F80};
    7 g$ X. m( [! M& C/ k7 _8 Q
  44. u8 DST_Buffer[4*BufferSize], Idx = 0;, n, D! R" `5 V  D. U- H5 O) m: t3 f
  45. /* Private functions ---------------------------------------------------------*/ ( c; H/ o2 X9 W

  46. : ~' I: z9 `% M" {: l. Y  B* l( y
  47. void FSMC_SRAM_Init(void)8 h. w# _4 U! `9 o; p
  48. {% X) m) ~2 J% Q9 @0 i: {
  49.   FSMC_NORSRAMInitTypeDef  FSMC_NORSRAMInitStructure;
      N- m+ S1 R* ~. G5 n
  50.   FSMC_NORSRAMTimingInitTypeDef  p;
    1 m: j- I" c" V. G' ^& y
  51.   GPIO_InitTypeDef GPIO_InitStructure;
    8 \% K4 ~  h9 ?/ G( M" ]4 y  c
  52.   ; L9 r5 I/ J# J. r1 O+ i' V
  53.   RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOD | RCC_APB2Periph_GPIOG | RCC_APB2Periph_GPIOE |6 B% k  C! L2 S- C& Z: R
  54.                          RCC_APB2Periph_GPIOF, ENABLE);
    + d0 D) N$ p- v$ _, w  e& j; u
  55.   
    5 `) Y; d* a2 L1 W
  56. /*-- GPIO Configuration ------------------------------------------------------*/; b+ i3 l! N% I) D4 ]
  57.   /* SRAM Data lines configuration *// D3 x. Q5 B+ S8 p1 _
  58.   GPIO_InitStructure.GPIO_Pin = GPIO_Pin_0 | GPIO_Pin_1 | GPIO_Pin_8 | GPIO_Pin_9 |
    2 B$ A7 D! t- J; O+ `8 z6 |4 l" q- [
  59.                                 GPIO_Pin_10 | GPIO_Pin_14 | GPIO_Pin_15;) q5 L% _, D- E, L" X7 E
  60.   GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;- ~# y& E5 c* ~  x1 D8 S
  61.   GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
      l* Q, F; f, S; l1 L5 Y( K' C7 t
  62.   GPIO_Init(GPIOD, &GPIO_InitStructure); ; R! `- e0 N5 Q) c" C7 ~7 N
  63.   
    % Z$ g4 ?0 H3 ~# i" J* Q0 r
  64.   GPIO_InitStructure.GPIO_Pin = GPIO_Pin_7 | GPIO_Pin_8 | GPIO_Pin_9 | GPIO_Pin_10 |
    $ D4 N: m" y/ b, l! ~  I
  65.                                 GPIO_Pin_11 | GPIO_Pin_12 | GPIO_Pin_13 | GPIO_Pin_14 |
    % C+ q1 |' b- h2 Z% ]) \! e
  66.                                 GPIO_Pin_15;
    ' }2 w7 F! o; |! g- e! t
  67.   GPIO_Init(GPIOE, &GPIO_InitStructure);
    6 p5 a: D* D# [7 w( K, `! X5 ]) Q+ j
  68.   6 V+ f% E+ E1 g' C, y& D5 k: c6 L2 m
  69.   /* SRAM Address lines configuration */$ n2 n" [' z: f7 A' r4 f5 E
  70.   GPIO_InitStructure.GPIO_Pin = GPIO_Pin_0 | GPIO_Pin_1 | GPIO_Pin_2 | GPIO_Pin_3 |
    * Z9 b6 i/ v0 R3 t: M* f$ [# s9 T
  71.                                 GPIO_Pin_4 | GPIO_Pin_5 | GPIO_Pin_12 | GPIO_Pin_13 |
    % S  p1 U% ?. i' a
  72.                                 GPIO_Pin_14 | GPIO_Pin_15;
    % O) K3 g7 O' ^+ w
  73.   GPIO_Init(GPIOF, &GPIO_InitStructure);
    0 G2 A$ Z) u" |3 |
  74.   
    3 o6 L+ p! ]( M( \) [; C4 S+ c/ K5 ?
  75.   GPIO_InitStructure.GPIO_Pin = GPIO_Pin_0 | GPIO_Pin_1 | GPIO_Pin_2 | GPIO_Pin_3 |
    5 `0 L7 S) u2 F/ M  F
  76.                                 GPIO_Pin_4 | GPIO_Pin_5;
    6 |1 L8 k1 T" g+ r( D
  77.   GPIO_Init(GPIOG, &GPIO_InitStructure);& r% V1 K) ~3 C
  78.   
    8 g5 T# J5 r2 I2 X3 n5 j* \8 ^
  79.   GPIO_InitStructure.GPIO_Pin = GPIO_Pin_11 | GPIO_Pin_12 | GPIO_Pin_13; / k1 i% g% A- B0 Q3 j2 O
  80.   GPIO_Init(GPIOD, &GPIO_InitStructure);
    # j. J" q5 ~; v2 W
  81.    
    0 |) N4 K  L& M% `. n& e& H
  82.   /* NOE and NWE configuration */  7 `6 e4 X' T) D8 S2 O
  83.   GPIO_InitStructure.GPIO_Pin = GPIO_Pin_4 |GPIO_Pin_5;' q- z0 w" e' i9 S% x4 M5 B+ L; h
  84.   GPIO_Init(GPIOD, &GPIO_InitStructure);0 L% V% p! N. X( Z# o# y" [
  85.   
    ! i" c- D0 G% h# |
  86.   /* NE3 configuration */
    2 K/ t1 y' C2 g5 a0 ?
  87.   GPIO_InitStructure.GPIO_Pin = GPIO_Pin_10; 6 x* k" x" r3 J: a
  88.   GPIO_Init(GPIOG, &GPIO_InitStructure);
    4 h, v6 m+ S0 D' m' O7 f! q
  89.   
    : E1 B) h- u8 J* j7 e
  90.   /* NBL0, NBL1 configuration */
    ( ~  ]7 U! ^; e; x" p
  91.   GPIO_InitStructure.GPIO_Pin = GPIO_Pin_0 | GPIO_Pin_1;
    & S6 P3 t% T; d
  92.   GPIO_Init(GPIOE, &GPIO_InitStructure); 1 s! p* g$ a) a' ~. Z7 q% a3 F, s- x
  93.   
    , o  C0 ~/ u7 G# s3 z
  94. /*-- FSMC Configuration ------------------------------------------------------*/1 w7 j* r) O5 D9 M
  95.   p.FSMC_AddressSetupTime = 0;+ F: b, L7 g, t! U/ j* A6 r9 e
  96.   p.FSMC_AddressHoldTime = 0;
    / P; R1 w  @% z+ x$ o
  97.   p.FSMC_DataSetupTime = 2;
    . ?5 S/ x0 m: e4 r7 s$ |$ n
  98.   p.FSMC_BusTurnAroundDuration = 0;
    & O" A! }: K, _+ V% Y$ e! a
  99.   p.FSMC_CLKDivision = 0;3 S* ~4 s. U1 _' [0 j
  100.   p.FSMC_DataLatency = 0;8 O' \$ V9 M1 a9 `/ z
  101.   p.FSMC_AccessMode = FSMC_AccessMode_A;
    ( J' G" Q5 \0 n

  102. 4 e1 k6 D4 g1 {" |- e
  103.   FSMC_NORSRAMInitStructure.FSMC_Bank = FSMC_Bank1_NORSRAM3;
    * z# P* D" P- [$ T+ a$ G* F
  104.   FSMC_NORSRAMInitStructure.FSMC_DataAddressMux = FSMC_DataAddressMux_Disable;
      U2 O$ U' w. S& Z% a- H3 D2 s( {
  105.   FSMC_NORSRAMInitStructure.FSMC_MemoryType = FSMC_MemoryType_SRAM;
    ) v2 e5 ]' q9 g  {! W
  106.   FSMC_NORSRAMInitStructure.FSMC_MemoryDataWidth = FSMC_MemoryDataWidth_16b;6 b$ N8 M7 X7 {6 E$ i3 }  p
  107.   FSMC_NORSRAMInitStructure.FSMC_BurstAccessMode = FSMC_BurstAccessMode_Disable;" c$ K( @  u6 ?& J' h8 U
  108.   FSMC_NORSRAMInitStructure.FSMC_WaitSignalPolarity = FSMC_WaitSignalPolarity_Low;5 j( U4 t/ m2 N- z4 }2 G
  109.   FSMC_NORSRAMInitStructure.FSMC_WrapMode = FSMC_WrapMode_Disable;
    8 ^% h6 B* F8 m  F) t
  110.   FSMC_NORSRAMInitStructure.FSMC_WaitSignalActive = FSMC_WaitSignalActive_BeforeWaitState;
    # w4 y; o) U8 h
  111.   FSMC_NORSRAMInitStructure.FSMC_WriteOperation = FSMC_WriteOperation_Enable;
    % K9 v. M8 \; F7 P$ j
  112.   FSMC_NORSRAMInitStructure.FSMC_WaitSignal = FSMC_WaitSignal_Disable;% h" M: d1 I+ P+ \; s: V
  113.   FSMC_NORSRAMInitStructure.FSMC_ExtendedMode = FSMC_ExtendedMode_Disable;) y$ I  I( N4 r( G0 g
  114.   FSMC_NORSRAMInitStructure.FSMC_WriteBurst = FSMC_WriteBurst_Disable;1 p$ _" P) f4 O7 c( z3 _1 Z. ^% b  l& n
  115.   FSMC_NORSRAMInitStructure.FSMC_ReadWriteTimingStruct = &p;7 {9 ^7 ]0 ~& T$ q9 @. n  f9 j
  116.   FSMC_NORSRAMInitStructure.FSMC_WriteTimingStruct = &p;& z) \8 k7 \% s4 J6 ^% G% f8 M

  117. ) f' I+ ~$ D, b7 Z) h
  118.   FSMC_NORSRAMInit(&FSMC_NORSRAMInitStructure); ; m0 a# B! _. n% ~$ L8 ]+ [
  119. : j3 `! q1 T/ [
  120.   /* Enable FSMC Bank1_SRAM Bank */
    % m7 U9 \5 _& i+ v* n
  121.   FSMC_NORSRAMCmd(FSMC_Bank1_NORSRAM3, ENABLE);  " O2 s5 T' y% z1 [* z
  122. }
    $ Z  n& Y; R: p0 M

  123. 7 n; x. s; M2 |7 [% z4 _2 W! a% Z
  124. TestStatus Buffercmp(uc32* pBuffer, u32* pBuffer1, u16 BufferLength)8 l% M9 M7 ~9 M/ F% n1 I- e
  125. {* P1 I4 t+ r' _# o- @; J, I. |
  126.   while(BufferLength--)+ M& M$ q# v) t, k5 ^, P$ j+ h
  127.   {
    6 j7 c# _( s  m2 v  w; |6 U  H
  128.     if(*pBuffer != *pBuffer1)
    , _: j9 ]0 R/ ~7 _4 N. Z
  129.     {7 a! A0 Q. c1 F9 i4 X2 J* `
  130.       return FAILED;- ~4 t+ [* P( ]0 g9 V
  131.     }8 Y" i% O, X; B% S( f* ~7 B
  132.    
      @0 [4 b. j4 u- K' H) d! T2 m
  133.     pBuffer++;
      a" l" x0 x3 }  {4 V) h. a2 e
  134.     pBuffer1++;( a. w# F$ ^3 T1 h/ I9 h
  135.   }' ]$ A/ u" e0 Y$ B
  136. $ |- a3 Q( G( Q& c
  137.   return PASSED;  
    % a! f$ H5 y: \1 B1 c# w5 a) U: }
  138. }( u# N: C3 Y; U  P1 C

  139. & T" \+ a+ |* ?3 Z7 Q4 K7 G0 v
  140. void fmain(void)+ s$ Q$ b' w! [- z1 R7 T
  141. {4 U" {: V, ?9 E: C
  142.   RCC_HSEConf(9);//72M
    2 w) R( [0 h9 S: ?( Z2 a
  143. 9 T, S! [* B" j7 `) S! x
  144.   RCC_AHBPeriphClockCmd(RCC_AHBPeriph_DMA1 | RCC_AHBPeriph_DMA2 | RCC_AHBPeriph_FSMC, ENABLE);0 |0 @5 n& B8 ?9 \

  145. ! @$ H% m; b7 u! _; O3 x
  146.   
    # i$ _0 y( w( w+ @( l" o/ i4 M: S
  147.   /* FSMC for SRAM and SRAM pins configuration */7 P  d# A# O6 }! j4 i5 E* y- g
  148.   FSMC_SRAM_Init();
    : X; ?9 ~  _% B

  149. * d0 d* u/ U* K" i- e
  150.   DMA_InitTypeDef    DMA_InitStructure;& |0 V5 A2 _, M7 a; t
  151.   /* Write to FSMC -----------------------------------------------------------*/
      s4 {& w1 Z4 L. j( Z: `
  152.   /* DMA2 channel5 configuration */
    ) K. q, G+ d$ G# Z
  153.   DMA_InitStructure.DMA_PeripheralBaseAddr = (u32)SRC_Const_Buffer;$ X- G2 ?9 Z7 i1 J& W% D( B9 k
  154.   DMA_InitStructure.DMA_MemoryBaseAddr = (u32)Bank1_SRAM3_ADDR;   
    : o% h' l9 X' Q- x3 e5 S6 ]
  155.   DMA_InitStructure.DMA_DIR = DMA_DIR_PeripheralSRC;. p7 s' d: ~( j* N+ `: S* A# W6 Y
  156.   DMA_InitStructure.DMA_BufferSize = 32;4 N$ D, G) q6 c9 K
  157.   DMA_InitStructure.DMA_PeripheralInc = DMA_PeripheralInc_Enable;8 L1 o, J3 ~* q
  158.   DMA_InitStructure.DMA_MemoryInc = DMA_MemoryInc_Enable;
    7 h5 D7 }) s1 i1 F
  159.   DMA_InitStructure.DMA_PeripheralDataSize = DMA_PeripheralDataSize_Word;
    # y7 @' m: ^3 z# h
  160.   DMA_InitStructure.DMA_MemoryDataSize = DMA_MemoryDataSize_Word;
    8 t% l3 P9 B. B
  161.   DMA_InitStructure.DMA_Mode = DMA_Mode_Normal;
    1 f5 N8 a5 |8 d+ i3 w
  162.   DMA_InitStructure.DMA_Priority = DMA_Priority_High;
      ~# B. C; ?/ f2 k- N
  163.   DMA_InitStructure.DMA_M2M = DMA_M2M_Enable;6 l1 O% b" @0 z- N  w+ r* C
  164.   DMA_Init(DMA2_Channel5, &DMA_InitStructure);; m( C& X  s0 R5 \0 [" ]. ^
  165.   DMA_Cmd(DMA2_Channel5, ENABLE);
      P3 R) r8 V, v* ?9 {
  166.   while(!DMA_GetFlagStatus(DMA2_FLAG_TC5));
    - L: Y/ P$ ^: R* F* ~5 E/ c
  167.   DMA_ClearFlag(DMA2_FLAG_TC5);
    : A7 j1 z7 e+ F, m
  168. ) E- |$ D- Q# L1 ~
  169.   /* Read from FSMC ----------------------------------------------------------*/) e, V8 b  ]0 f0 X: Q7 z" {3 U% k
  170.   /* Destination buffer initialization */
    & H+ O' s$ Y' G  t8 K% a
  171.   for(Idx=0; Idx<128; Idx++)
      Z) b$ Z0 Y: J4 ?  [; n: S4 s6 K3 x
  172.     DST_Buffer[Idx]=0;
    ! N8 ]& ~/ j+ d# _3 p% }. G' B
  173.   /* DMA1 channel3 configuration */3 m0 c" x2 t5 Q  _
  174.   DMA_InitStructure.DMA_PeripheralBaseAddr = (u32)Bank1_SRAM3_ADDR;  
    8 N0 ^4 l0 @5 c# }0 S
  175.   DMA_InitStructure.DMA_MemoryBaseAddr = (u32)DST_Buffer;# G# M. V1 B0 e% d3 L: W% h3 p
  176.   DMA_InitStructure.DMA_DIR = DMA_DIR_PeripheralSRC;
    8 L: _$ `  B8 p
  177.   DMA_InitStructure.DMA_BufferSize = 128;5 x8 S1 V) A5 T! I% d( C9 A0 X
  178.   DMA_InitStructure.DMA_PeripheralInc = DMA_PeripheralInc_Enable;* H2 f+ @6 {. Z: _
  179.   DMA_InitStructure.DMA_MemoryInc = DMA_MemoryInc_Enable;
    ( m4 X" ]; b2 P1 _! m
  180.   DMA_InitStructure.DMA_PeripheralDataSize = DMA_PeripheralDataSize_Byte;0 Y5 L- Z7 Y9 g; L4 v
  181.   DMA_InitStructure.DMA_MemoryDataSize = DMA_MemoryDataSize_Byte;
    & u0 C; n5 I4 {. z, z
  182.   DMA_InitStructure.DMA_Mode = DMA_Mode_Normal;5 _8 S2 y. \# c3 p5 @( C& Y8 x
  183.   DMA_InitStructure.DMA_Priority = DMA_Priority_High;$ V2 m" u. O/ m* K3 L) t; h
  184.   DMA_InitStructure.DMA_M2M = DMA_M2M_Enable;
    / ?7 S5 M1 w! u# @0 g9 q2 v9 U
  185.   DMA_Init(DMA1_Channel3, &DMA_InitStructure);
    * [+ d' k" b, Y; b& ?/ F
  186.   DMA_Cmd(DMA1_Channel3, ENABLE);( |6 h2 t3 J; X. C6 e1 ]
  187.   while(!DMA_GetFlagStatus(DMA1_FLAG_TC3));
    & r! _/ p) S* D9 j: W/ P  y2 l
  188.   DMA_ClearFlag(DMA1_FLAG_TC3);7 I) y, [& z& C

  189. ! K& o4 N6 Z" C
  190.   /* Check if the transmitted and received data are equal */. k3 Q2 o" e. d& v4 @
  191.   TransferStatus = Buffercmp(SRC_Const_Buffer, (u32*)DST_Buffer, BufferSize);! n/ X  i- M: h( \. t
  192.   /* TransferStatus = PASSED, if the transmitted and received data / a/ t3 T- \% {: |
  193.      are the same */
    * p7 E: ^% [4 d9 q
  194.   /* TransferStatus = FAILED, if the transmitted and received data
    7 R! h$ C( c( Y6 u
  195.      are different */
    4 F. r- o8 n7 g' K' N
  196. }7 J0 O* K2 s$ i) J0 O

  197. / U) G7 j1 E' d' o6 ]
  198. #endif
    + d- F! u* s. b" t
  199. /******************* (C) COPYRIGHT 2008 STMicroelectronics *****END OF FILE****/
    0 s1 R% t- R" Y& h+ N7 N
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Dylan疾风闪电 回答时间：2016-1-7 15:12:56
  1. /**
    ) K: e9 e/ m7 S: b
  2.   ******************************************************************************! X' z; m6 \2 L4 x  t
  3.   * @file /EXTI_Example.h
    7 f* d2 A$ ~2 Q1 g; A3 [
  4.   * @author    xd.wu) @3 _: [2 ?; ]) I+ }/ z
  5.   * @version   V1.0
    ; ]1 ^! Y+ R+ p( M
  6.   * @date     2012-4-17; j% F# k" ~2 z3 A* L$ w* }
  7.   * @brief    EXTI：按下PB10(Key4) 翻转绿灯(PF6)上的电平
    1 e) U! W& Q5 O9 `: z( W
  8.   ******************************************************************************) L( w- P7 ~6 Z
  9.   *用途：执行外部中断，来切换某些功能
    0 p; {6 X1 `8 f, s
  10.   */7 Q, {4 v5 ?7 K& p6 {
  11.   /*实例应用步骤：
    ; s. E; v# @, E6 Z
  12.   //1."main.cpp"调用fmain()+ \) T) @4 r3 L5 |" p4 N
  13.   
    ; F6 g! T$ A5 g  K
  14.   //2."stm32f10x_it.cpp"拷贝
      H, D. E& a9 A% n. Q6 b9 l
  15.   #define GPIO_LED  GPIOF  H/ K+ Q- k  h
  16.   void EXTI15_10_IRQHandler(void): P$ G* ]* g! o( \
  17.   {
      ~, ]' H& z) [0 R" R; U: H& [! N
  18.       if(EXTI_GetITStatus(EXTI_Line10) != RESET)
    0 V9 E; J7 K1 [" @! ]4 e# u/ T
  19.     {
    " Y) V5 ^+ o2 E% X+ M
  20.       GPIO_WriteBit(GPIO_LED, GPIO_Pin_6, (BitAction)((1-GPIO_ReadOutputDataBit(GPIO_LED, GPIO_Pin_6))));; s4 S, e7 i' y# `% j4 y
  21.   . [7 W1 c2 i6 n3 z! H' i
  22.       EXTI_ClearITPendingBit(EXTI_Line10);' H4 f8 c( O1 E
  23.     }! h; \0 U3 G6 k2 i+ U$ [* a; t
  24.   }
    6 M7 J' I0 l& Q' D1 E! P  {
  25.   
    . ^4 [2 ?2 l& ~2 r
  26.   //3."stm32f10x_it.h"声明/ _" e; E6 ~' X0 N
  27.   void EXTI15_10_IRQHandler(void);: q: {" z$ @2 N+ f7 ^5 U8 {9 i9 |6 p

  28. 2 ?, d3 z" w; `7 F
  29.   //4.Watch中观察4 q- y9 o" U/ F% \  L2 g5 ]& A
  30.   LED) W- Z- }( D. M# R2 M8 Y* ]
  31.   */
    0 X5 H! G. |# M+ y
  32. : |8 r" o. Z( o3 |, j
  33. #ifndef __EXTI_EXAMPLE_H0 o/ f# B) f' T7 i
  34. #define __EXTI_EXAMPLE_H
    / ]( n  q; {$ w* E# L7 i; T1 P
  35. /* Includes ------------------------------------------------------------------*/: |$ ^% `6 `# O$ B. A
  36. #include "std32periph.h"0 l) o! W/ {# {

  37. 8 ~  [. n+ ?1 V/ w/ i
  38. /* Private typedef -----------------------------------------------------------*/
      G/ n% N* S7 k9 r
  39. /* Private define ------------------------------------------------------------*/
    7 K4 A' h# C, E* l; |9 T. c
  40.   #define GPIO_LED        GPIOF   
    , e4 ^+ f6 o, p5 V' ?  r
  41.   #define RCC_LED         RCC_APB2Periph_GPIOF
    + h! u% Z/ d' t# c4 K) ^3 {: i$ |9 u
  42.   #define GPIO_EXTI       GPIOB
    5 \  p9 C+ ]) e' c
  43.   #define RCC_EXTI        RCC_APB2Periph_GPIOB- ^$ k. F4 H* o( s! [  T
  44. /* Private macro -------------------------------------------------------------*/# b8 C" m6 O, c& `
  45. /* Private variables ---------------------------------------------------------*/, z/ _; v  g: O; n" X
  46. /* Private functions ---------------------------------------------------------*/8 T4 l2 l" }+ Y& X/ z% [8 L
  47. 3 x) [6 r+ b6 {2 ?  R4 q* u! y
  48. void fmain(void)/ r( M! I4 t; a5 x# x
  49. {
    ; {5 p) N: z8 c6 h8 \  d
  50.   RCC_HSEConf(9);//72M
    3 l' d2 O; S; M: h! o
  51. 2 N2 `+ }- D4 ^' ~) N5 e
  52.   RCC_APB2PeriphClockCmd(RCC_EXTI | RCC_LED | RCC_APB2Periph_AFIO, ENABLE);
    & [9 x$ T7 Z+ W
  53.   
    # m' k. j/ Y8 h  @9 x5 O
  54.   GPIO_InitTypeDef GPIO_InitStructure;
    - L+ ?" M* ?2 u- E" ^
  55.   /* Configure GPIO Led pin 6 as Output push-pull *// ^- ~8 R) y) b# X
  56.   GPIO_InitStructure.GPIO_Pin = GPIO_Pin_6;; J6 v" W! o% C
  57.   GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;/ r# |! f: \7 ~; Z8 g9 |
  58.   GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP;
    # o8 J/ a7 U* h# v$ v
  59.   GPIO_Init(GPIO_LED, &GPIO_InitStructure);/ h) s7 W: a: I; A/ \1 F
  60.   /* Configure Key Button GPIO Pin as input pull-up (Key Button EXTI Line) */
    * m# }9 f; L; w4 Z* Q
  61.   GPIO_InitStructure.GPIO_Pin = GPIO_Pin_10;" \: V$ Y8 u& r" f* R: Q& B
  62.   GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IPU;) |  y3 p& a* R% U
  63.   GPIO_Init(GPIO_EXTI, &GPIO_InitStructure);
    + f) h8 x+ o, O! d. d2 q  c
  64.   3 {/ X7 j: j9 m9 m. A3 U. X7 ?
  65. 8 y) S% Q. k& P, ]
  66.   //NVIC for EXTI, Q" A" I2 t3 e$ S5 r9 L
  67.   NVIC_GroupSet(NVIC_PriorityGroup_0, EXTI15_10_IRQn, 0);
    1 m# G  [' K+ c" A0 e6 w+ ~
  68. " R* p5 v( Z! R; b" O& O8 B0 P
  69.   * N) @" P3 e  k) j
  70.   /* Connect Key Button EXTI Line to Key Button GPIO Pin */
    9 A) x# S$ W/ ?5 }3 }8 B
  71.   GPIO_EXTILineConfig(GPIO_PortSourceGPIOB, GPIO_PinSource10);
    1 J: k# b6 \4 r' g- \) \
  72.   /* Configure Key Button EXTI Line to generate an interrupt on falling edge */  
    + B2 }) K/ G5 W8 [. ]. ]3 V
  73.   EXTI_InitTypeDef EXTI_InitStructure;
    8 e2 Y: u. \" f( W* q
  74.   EXTI_InitStructure.EXTI_Line = EXTI_Line10;
    4 ~% m: V: F2 l" G" V4 U
  75.   EXTI_InitStructure.EXTI_Mode = EXTI_Mode_Interrupt;
    3 e/ a/ q, |  K$ X# c1 H8 w
  76.   EXTI_InitStructure.EXTI_Trigger = EXTI_Trigger_Falling;
    ! X+ m2 q1 }8 N1 ]6 L
  77.   EXTI_InitStructure.EXTI_LineCmd = ENABLE;
    ) U' j' W0 _: K- Q. {, C, a; p
  78.   EXTI_Init(&EXTI_InitStructure);
    3 W; ]% W) O" q* [( y

  79. ) [. v1 a' P2 x
  80.   /* Generate software interrupt: simulate a falling edge applied on Key Button EXTI line */( D; T: Z" x! ^8 C9 y7 v
  81.   EXTI_GenerateSWInterrupt(EXTI_Line10);- i6 I! C  Q2 v8 Q# B
  82. }" X4 P  I" @- S. c
  83. . L1 o- K( g" c& B8 l
  84. #endif5 a& h* X2 x8 V. P
  85. /******************* (C) COPYRIGHT 2008 STMicroelectronics *****END OF FILE****/$ X! o7 v3 e. _; i/ o! e7 F6 ]6 I
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Dylan疾风闪电 回答时间：2016-1-7 15:13:12
  1. /**
    0 L  G' k% ]4 @. x7 i) {2 l
  2.   ******************************************************************************
    ) Y! i3 `; L% H: L
  3.   * @file /FLASH_Program.h$ @7 m) n7 @* B( `1 S$ N! e! s3 R
  4.   * @author    xd.wu8 ~& i# N: \1 W
  5.   * @version   V1.0
    $ o+ V6 O& i$ Z: f- I3 A) c- C
  6.   * @date     2012-4-17& m: q9 O( T6 }/ P4 t
  7.   * @brief    FLASH：擦写数据到FLASH地址
    - ^! @0 ^8 Z2 b( B' y
  8.   ******************************************************************************/ V/ u- e4 \$ h: y$ l
  9.   *用途：将某些掉电保持的数据存入FLASH，供下次上电检测  b* r; K1 j# K  w# s
  10.   */
    9 O% L. w9 o2 r; b& h9 w: v# L
  11.   /*实例应用步骤：
    * C; Y- l4 X/ n. h7 ^
  12.   //1."main.cpp"调用fmain()  k/ R/ f, E1 ~: U. N: g
  13.   
    0 X8 ?+ }* a* j" w
  14.   //2.Watch中观察
    ) T; e( D* `  W3 y2 Z
  15.   FLASH地址0x08008000~0x0800C000中的数据：1 p- |2 y" h* e* u
  16.     从0xFFFFFFFF修改为Data = 0x15041979;
    $ _) u9 c# }9 X; c! {* u
  17.   */& a  E6 B' s7 H; c  o$ L
  18. 1 j7 Z# A4 J7 k) T- q" d+ m
  19. #ifndef __FLASH_PROGRAM_H' k) f$ G- k% K; u" w' W  a
  20. #define __FLASH_PROGRAM_H
    7 Z- ]6 B. A- @) D2 n( O4 r
  21. /* Includes ------------------------------------------------------------------*/' D# D9 Q- K# B6 c8 z
  22. #include "std32periph.h"1 p# ]4 `, ^' @/ E

  23. 2 P5 c; d6 o( D
  24. /* Private typedef -----------------------------------------------------------*/
    * V, E- X% T! j4 y5 ~
  25. typedef enum {FAILED = 0, PASSED = !FAILED} TestStatus;! x* _: ^6 p, O! M/ s
  26. /* Private define ------------------------------------------------------------*/
    4 u! R3 w! `. p
  27. #define FLASH_PAGE_SIZE     ((u16)0x800)9 j, N7 L6 e" a
  28. #define StartAddr           ((u32)0x08008000)
    $ Y% L; ~/ _4 \  s5 q' p
  29. #define EndAddr             ((u32)0x0800C000): }% [) j+ b2 y; x9 |5 x
  30. /* Private macro -------------------------------------------------------------*/
    9 y( |$ d" g2 C" k3 d# @( L
  31. /* Private variables ---------------------------------------------------------*/# b7 I  G8 |! n2 E+ |' Z
  32. /* Private functions ---------------------------------------------------------*/9 j/ C6 S3 k# H% q

  33. , `% _& Y' N" t! v3 t7 V+ T9 L
  34. void fmain(void)
    ( H& |3 I0 i) n9 U! l1 G" p
  35. {
    ! N4 j: [8 [- ~- z, S* ]9 k8 i8 N, f
  36.   u32 EraseCounter = 0x00, Address = 0x00;
    1 [; }# [! U( U7 w/ A! ^' l5 j
  37.   vu32 NbrOfPage = (EndAddr - StartAddr) / FLASH_PAGE_SIZE;
    ( _' g  a# V& T4 i
  38.   u32 Data = 0x15041979;6 p/ _$ {' K! R7 N
  39.   /*  typedef enum{FLASH_BUSY = 1,  FLASH_ERROR_PG,  FLASH_ERROR_WRP,  FLASH_COMPLETE,  FLASH_TIMEOUT}FLASH_Status;  */& q# ~9 ]+ s7 v9 g$ A$ V: e! E
  40.   volatile FLASH_Status FLASHStatus = FLASH_COMPLETE;4 n8 Z3 F- G/ U' t
  41.   volatile TestStatus MemoryProgramStatus = PASSED;
    % R/ J: y7 y% b: _) k& I) f  j
  42.   ; Q  V8 ~  a5 Q1 p9 k' M
  43.   6 O6 C: |: {0 x6 E  `+ H
  44.   RCC_HSEConf(9);//72M" g; Q: i6 c6 N$ b

  45. , L% Q/ B+ I: g' z+ A. E, c
  46.   
    " `' \: `3 |8 D( g5 W
  47.   FLASH_Unlock();$ r# K7 V) Z5 [; _6 C
  48.   /* Clear All pending flags */
    ; f: I6 f, n6 I& [
  49.   FLASH_ClearFlag(FLASH_FLAG_BSY | FLASH_FLAG_EOP | FLASH_FLAG_PGERR | FLASH_FLAG_WRPRTERR);        $ b* j8 O. E$ P, `* L7 I$ M8 q
  50. ! u5 k* ^6 u1 o# `
  51.   /* Erase the FLASH pages */
    + x9 x; o: [+ k( v7 w- h( B
  52.   for(EraseCounter = 0; (EraseCounter < NbrOfPage) && (FLASHStatus == FLASH_COMPLETE); EraseCounter++)
    4 @5 ^) ]; Z+ F5 g+ a" O* ?2 B
  53.   {$ t  b  f% e, {2 {0 L
  54.     FLASHStatus = FLASH_ErasePage(StartAddr + (FLASH_PAGE_SIZE * EraseCounter));+ j; v2 k; r% F7 Z8 [5 B
  55.   }0 p( w2 U& j; t1 F- I0 b# |
  56.   
    * _! o3 ]' V# L; q/ u) `
  57.   /*  FLASH Word program of data 0x15041979 at addresses defined by StartAddr and EndAddr*/
    2 h' z# h- @9 U9 ]  L
  58.   Address = StartAddr;
    0 [+ D, c8 g& z. Z# ?" ?7 e
  59.   while((Address < EndAddr) && (FLASHStatus == FLASH_COMPLETE))
    % e7 ^+ g) k5 v6 X9 j2 g
  60.   {
    7 K) b% {- m" N8 N4 Z! e' K
  61.     FLASHStatus = FLASH_ProgramWord(Address, Data);, U% Y8 `: b; t- w
  62.     Address = Address + 4;: d! q4 A# x; l8 y# s8 Z  ^4 u; y
  63.   }
    # p% ~5 ^+ F4 ^& R+ [9 l
  64.   5 w: u1 g' t  [1 c( T5 ^9 C, y
  65.   /* Check the corectness of written data */
    0 Q# m( x" ^% W
  66.   Address = StartAddr;0 M; \: [* `% `) [  K( w
  67.   while((Address < EndAddr) && (MemoryProgramStatus != FAILED))% f8 j' ^1 R. m6 y4 P; Y3 G
  68.   {' i" f' G& ?4 B* O
  69.     if((*(vu32*) Address) != Data)
    $ {! K/ V/ t: b' `4 ?
  70.     {/ ?: \% Z, X. Y1 \6 F7 m9 h& J* m
  71.       MemoryProgramStatus = FAILED;
    " N2 n2 |2 W& [4 Z
  72.     }
    % O2 l* z; h2 G
  73.     Address += 4;( c* M7 I; l: R: b4 @5 W$ a9 y7 v
  74.   }
    " u3 `6 L! C4 d. D! m9 z
  75. }
    $ e# L# N3 p3 z& H8 |1 z

  76. * f3 e9 I, u4 ~
  77. #endif; P% W* s/ V# l, _3 `$ i
  78. /******************* (C) COPYRIGHT 2008 STMicroelectronics *****END OF FILE****/7 z# J% x2 n: h/ o$ C
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Dylan疾风闪电 回答时间：2016-1-7 15:13:27
  1. /*** A& @6 W8 }0 |4 f5 D. A5 q
  2.   ******************************************************************************( U/ A, Q( k# r/ N, J
  3.   * @file /FLASH_WriteProtection.h: x- ?5 i3 x7 z, }3 @
  4.   * @author    xd.wu
    0 y! S6 x$ }: i! x! _0 g! F4 M5 j
  5.   * @version   V1.0* Y) K8 b- `: g% T5 n% _2 i. R
  6.   * @date     2012-4-17
    # Y# @% }7 @( ^2 i
  7.   * @brief    FLASH：写保护(写保护部分存在问题，无法设置保护)
    / ~! q1 E9 y# ?( _, e& ^
  8.   ******************************************************************************
    / B4 P0 D+ E, z( ]3 _$ Y+ J
  9.   *用途：将某些掉电保持的数据存入FLASH，供下次上电检测
    1 x& m2 ]$ q/ W+ j
  10.   */4 U' a/ Z0 k; i+ a/ a0 f0 @
  11.   /*实例应用步骤：
      {/ T, p) e6 C3 c- I8 `  n+ ?
  12.   //1."main.cpp"调用fmain()
    3 J) f$ ^' `/ e) _+ D5 ~
  13.   
    1 z8 ~) A+ P2 T1 C' u+ C$ S
  14.   //2.Watch中观察
    + }+ I* e% _& S, P+ g
  15.   FLASH地址0x08006000~0x08008000中的数据：
    " |; g+ E& R1 p3 p3 _
  16.     从0xFFFFFFFF修改为 0x17531753;8 ?4 z$ M. e$ S/ D$ O
  17.   */
    + P% {. P1 l* V1 x7 Z4 _
  18. - j0 d! Q# q+ Q5 e* u! ]
  19. #ifndef __FLASH_WRITEPROTECTION_H" X& F/ B# ]9 h) K' ?
  20. #define __FLASH_WRITEPROTECTION_H
    3 ], w$ m" P3 F
  21. /* Includes ------------------------------------------------------------------*/
    + R2 l+ w4 d3 g% a
  22. #include "std32periph.h"
    ! L. ?: o8 K$ e* c+ v& x% ^% h
  23. ! ?7 a! {! n3 I! G/ j
  24. /* Private typedef -----------------------------------------------------------*/
    0 `) Z( e6 M8 v7 f/ X0 m
  25. typedef enum {FAILED = 0, PASSED = !FAILED} TestStatus;
    , X$ C' S% h1 k: [" t  Y5 |
  26. /* Private define ------------------------------------------------------------*/
    ; e! H9 _# f' O" u& l4 ]# z+ Y
  27. #define FLASH_PAGE_SIZE     ((u16)0x800)
    1 _# f5 e/ o8 u) H3 `1 A# _8 L9 s9 O
  28. #define StartAddr           ((u32)0x08006000)8 E7 |7 [% \+ ~( g
  29. #define EndAddr             ((u32)0x08008000)  {/ {9 P( `  q3 A7 V2 K
  30. /* Uncomment this line to Enable Write Protection */: E8 s+ ]8 Z/ ?3 s% F
  31. //#define WriteProtection_Enable: d8 W2 n. c0 O7 z; b
  32. /* Uncomment this line to Disable Write Protection */
    $ Y) m" y9 d  s/ `
  33. #define WriteProtection_Disable
    4 P4 M  }7 M8 Y8 t5 Y
  34. /* Private macro -------------------------------------------------------------*/
    * w$ Q+ U" x3 ~0 C0 _7 e5 R0 B0 V
  35. /* Private variables ---------------------------------------------------------*/" b- A: n* _! N* Y5 J+ _
  36. /* Private functions ---------------------------------------------------------*/3 c2 f( W5 H; Z/ D: J! q, g

  37. ' K. p8 W8 W- ~9 `
  38. void fmain(void)
    & O' r  U3 q/ N9 w
  39. {' f- j- i3 n8 X5 D0 c
  40.   u32 EraseCounter = 0, Address;
    ) l( w, a: k7 {1 ^
  41.   u16 Data = 0x1753;: G0 H% l6 O  Y0 e
  42.   vu32 WRPR_Value = 0xFFFFFFFF, ProtectedPages = 0x0;
    ) y0 ^8 P1 r7 [# c- a
  43.   vu8 NbrOfPage = (EndAddr - StartAddr) / FLASH_PAGE_SIZE;
    * g8 H# ~& ]% Y& f
  44.   /*  typedef enum{FLASH_BUSY = 1,  FLASH_ERROR_PG,  FLASH_ERROR_WRP,  FLASH_COMPLETE,  FLASH_TIMEOUT}FLASH_Status;  */1 Y' r' z6 q0 y& ?* ^
  45.   volatile FLASH_Status FLASHStatus = FLASH_COMPLETE;" h- N5 c* }0 S
  46.   volatile TestStatus MemoryProgramStatus = PASSED;  ' V* ~9 h5 c5 Q
  47.   
    $ X! r8 a- Y, k5 p+ L
  48.   + w* P+ K5 d7 c
  49.   RCC_HSEConf(9);//72M8 O; R* b7 K7 C$ w) E2 [6 j

  50. 4 D) Y$ _6 H& i' R
  51.   
    " x, }# N9 X" C5 k, u
  52.   //CR_LOCK位=1执行解锁序列7 b4 K9 h, v% r
  53.   FLASH->KEYR = 0x45670123;
    ' m$ }7 K6 i1 Q1 P0 e# F* y
  54.   FLASH->KEYR = 0xCDEF89AB;
    # L3 z* k( ?" ]! X3 m
  55.   ' B( W7 e# r- \" F( X& \* }1 {1 [
  56.   FLASH->SR = 0x35;//写1清除SR寄存器所有状态
    # K$ e. Z3 |" x3 ]# L" }# H

  57. * ]& n) G9 q$ n9 N) u1 f' i( G% l
  58.   //获取信息最后8页的写保护状态，判断是否写保护
    7 b! ]+ |; Y/ H2 T3 @  b
  59.   ProtectedPages = (FLASH->WRPR) & 0x000000C0;
    0 ]2 s% }/ M1 c  o- }

  60. ' E7 h8 s$ h" `8 w
  61. #ifdef WriteProtection_Disable! \7 f8 n" h+ k( C
  62.   if (ProtectedPages == 0x00)
      ^8 p" n. q2 i+ x0 Y
  63.   {/* Pages are write protected */) u$ ~& c; C" O2 l
  64.     FLASHStatus = FLASH_EraseOptionBytes();//Erases the FLASH option bytes.
    3 V& c0 @- \% V' ^- K: l* s+ L1 P
  65.     /* ---------------------------------------------------------------------------------------
    . O5 q+ g2 I8 V+ F2 ]
  66.     要将访问钥匙 0x05FA0000 与我们的操作 SYSRESETREQ[2]=1 相或,一起写入 SCB->AIRCR,才被CM3接受
    , L, Z3 A/ j4 w
  67.     //NVIC_GenerateSystemReset();' L% z( T8 _2 w
  68.     --------------------------------------------------------------------------------------- */6 w' s8 W: V* Q
  69.     SCB->AIRCR = (u32)0x05FA0000 | (u32)0x04;//先键入钥匙(u32)0x05FA0000,然后产生一个系统复位
    ) f5 M& _) w' d
  70.   }
    ! l) Q8 S, a, l4 h) _( {
  71. #elif defined WriteProtection_Enable# w0 r1 f3 k' t$ U0 f" F2 w7 W3 n& L
  72.   if (ProtectedPages != 0x00)0 C" B) F9 i$ f$ n+ b
  73.   {/* Pages not write protected */% B2 i7 {% X& F. E6 L' U+ P$ U
  74.     /* Enable the pages write protection */
    3 V2 `, t7 b. T# H: D- z, q
  75.     FLASHStatus = FLASH_EnableWriteProtection(0x000000C0);
    ; o6 w- y& K! b
  76.    
    ' R/ \, Q9 {  r  d  Q! [
  77.     /* ---------------------------------------------------------------------------------------
    ; r3 s3 m! }5 `, ?& h5 H/ N. i; s+ x  X
  78.     要将访问钥匙 0x05FA0000 与我们的操作 SYSRESETREQ[2]=1 相或,一起写入 SCB->AIRCR,才被CM3接受' b- N. u* |/ x+ f
  79.     //NVIC_GenerateSystemReset();- F* }. z9 k7 e& m" H8 J6 m" U! {
  80.     --------------------------------------------------------------------------------------- */
    4 |, B/ N# h$ O2 }/ f
  81.     SCB->AIRCR = (u32)0x05FA0000 | (u32)0x04;//先键入钥匙(u32)0x05FA0000,然后产生一个系统复位
      |; h/ k/ I9 E4 c9 g% I: x
  82.   }
    $ l  s! M% P9 C: w- i
  83. #endif
    6 B4 S6 @# z1 I- \0 S% `3 L' W, z
  84.   # N5 d# j4 R! Y" ]
  85.   /* If Pages are not write protected, perform erase and program operations( g, \0 {$ n) b/ I; z1 X
  86.      Else nothing */# B' `' g& n7 F4 I2 d# G2 O: I8 a
  87.   if (ProtectedPages != 0x00)" w( s' v3 v7 @! _
  88.   {' P1 w  t  J+ ?
  89.     FLASH->SR = 0x35;//写1清除SR寄存器所有状态6 D2 o( ~6 ]! u5 R$ A* [

  90. / P4 d$ q, g: G% ~$ K7 D
  91.     //擦除指定FLASH页
    8 o4 k. {# O, G; F) T4 q
  92.     for(EraseCounter = 0; (EraseCounter < NbrOfPage) && (FLASHStatus == FLASH_COMPLETE); EraseCounter++)
    3 M' A' R* D# g' f$ V5 I; s
  93.     {3 p) [5 X* L* b9 }! l/ e/ [: ]4 p5 X
  94.       FLASHStatus = FLASH_ErasePage(StartAddr + (FLASH_PAGE_SIZE * EraseCounter));1 c- \9 D/ I7 ^
  95.     }5 R# v7 j8 ]6 C& l; O
  96.   5 s6 l4 m3 X3 K& @- I0 l' u
  97.     //将数据0x1753 写入指定FLASH地址
    , h$ k, w& R0 T
  98.     Address = StartAddr;
    ) z7 u6 T/ H- J: _! x6 y
  99.     while((Address < EndAddr) && (FLASHStatus == FLASH_COMPLETE))7 t  K* o! }2 l4 O, o% w
  100.     {. i/ q& w7 ]- ?1 `
  101.       FLASHStatus = FLASH_ProgramHalfWord(Address, Data);
    ( A" t& _7 ^0 w, L1 \0 X7 ~
  102.       Address = Address + 2;" T$ j" b3 f  x8 ^( d+ H6 T
  103.     }
    5 K) J( B( J, D5 n( O, g% Y) v: v

  104. . R& {) q2 |/ i( M; b( {7 o1 o
  105.     //检测写入的数据
    ( x) X) B$ ?  t( t6 G3 S1 {
  106.     Address = StartAddr;
    4 u% a! k3 w8 \& O
  107.     while((Address < EndAddr) && (MemoryProgramStatus != FAILED))) r2 a3 H# ]7 I* m; a. w  K: t
  108.     {
    1 j. I/ M0 x  y" c
  109.       if((*(vu16*) Address) != Data)
    * |* d" ~, U$ l2 K
  110.       {
    ( n- ]7 p3 S  U
  111.         MemoryProgramStatus = FAILED;* j3 K3 W8 k9 ]+ c) n0 K6 A1 b
  112.       }: n4 f- X5 G5 k! f! l
  113.       Address += 2;
    ( n8 W* M- T' H7 N: r/ E& z
  114.     }* b+ i$ r* P0 \% k. X3 j5 `) c
  115.   }
    + p" W( i1 P" |5 v3 ~
  116. }
    5 ]) \6 z- ?4 P0 G% C

  117. 4 _6 a6 c/ p4 j: h: r6 h
  118. 7 D$ _" Y  `% x% i9 v$ f* Q) R$ \* C

  119. - Z' x, y8 e3 w0 V
  120. #endif
    ' O4 ]! v/ W- E& y' r) L# G4 R
  121. /******************* (C) COPYRIGHT 2008 STMicroelectronics *****END OF FILE****/
      Q: ~7 {! m4 X6 a( y; U
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Dylan疾风闪电 回答时间：2016-1-7 15:13:42
  1. /**/ D  o; h+ Y# Q
  2.   ******************************************************************************: c5 j# V8 [2 b5 N6 ^: N
  3.   * @file /FSMC_NAND.h
    " i/ B/ l, h' s$ n/ V
  4.   * @author    xd.wu5 g/ ]  D+ k- y6 A* U& U. l/ i
  5.   * @version   V1.0
    5 O- X5 B. S0 K/ y( L: F
  6.   * @date     2012-4-17
    5 j) C9 p- Q  J/ Z6 k% k
  7.   * @brief    FSMC：(未研究)% M" ~* ~& _9 L5 ~$ t4 y( Y
  8.   use the FSMC firmware library and an associate driver to perform erase/read/write operations
    - }0 p( f9 U" [4 r! t! @( m
  9.   on the NAND512W3A2CN6E memory mounted on STM3210E-LK board.
    * Q" U1 Y* R  k, ^5 s% r
  10.   ******************************************************************************
    9 C3 \. |- ^1 m  W, }2 x! L* X. x
  11.   *用途：将某些掉电保持的数据存入FLASH，供下次上电检测
    / ?8 T# f' N, I$ {* _
  12.   */+ w7 u0 K' d+ p  M
  13.   /*实例应用步骤：# u8 E/ Q  n8 @, U+ t
  14.   //1."main.cpp"调用fmain()
    ( m0 Z) N' p# z! e0 \  @6 J, h
  15.   " _! ]* H* P3 d" @# Y
  16.   //2.Watch中观察. m2 w) \% }; Q: i; B
  17.   LED, ]( g# l( [9 E: `- E
  18.   TxBuffer,RxBuffer
    : `( W' f3 V, m6 ^8 }
  19.   */5 _! Z& ]+ Y/ f6 {
  20. 2 I# I) p7 ~* `, A
  21. #ifndef __FSMC_NAND_H
    - ]( l; _% f+ j7 c
  22. #define __FSMC_NAND_H2 Y6 h. P$ S9 p# ~
  23. /* Includes ------------------------------------------------------------------*/+ J7 P9 \: Q* {7 w6 E/ m! `4 x
  24. #include "std32periph.h"
    , K. E6 ~6 u4 F& ]. q/ G
  25. 7 n# L! Z" e, q) b" Q
  26. /* Private typedef -----------------------------------------------------------*/* y' L, L7 ]3 v- a2 o  e
  27. typedef struct
    . f6 I* R& M0 m; X% b
  28. {  v& D* T9 D, z# Y1 e) d
  29.   u8 Maker_ID;
      C. t" R; y9 |/ R: n; s
  30.   u8 Device_ID;
    " i' Z$ A  [- ]2 P% u! R
  31.   u8 Third_ID;: \9 R' o' f9 x/ K. [6 s  [
  32.   u8 Fourth_ID;. t+ e" k% H% R5 v2 ?) N
  33. }NAND_IDTypeDef;
    * Q0 v/ T- m7 d9 o

  34. 6 C3 h: x/ _' L' X4 t
  35. typedef struct 3 S  Z' ]" d  K) S0 [
  36. {
    # R* d6 n6 A8 B- q+ }/ @3 b: v6 n
  37.   u16 Block;6 n8 ?2 u) r* i' H3 g
  38.   u16 Page;2 v  P8 ]  P0 [
  39. } NAND_ADDRESS;
    : y7 D9 z/ i$ O: y: ]
  40. /* Private define ------------------------------------------------------------*/
    % O, G( n4 T$ ^4 R5 z  U
  41. #define BUFFER_SIZE         0x80//0x1000( p% x- {1 J- m% t
  42. #define NAND_HY_ManufactureCode 0xAD
    7 l! y8 A5 R9 q; h
  43. #define NAND_HY_DeviceCode      0xF1! H0 g2 @% \9 _: K
  44. #define NAND_HY_3rdCode         0x80( o4 w5 |& Z7 w# V
  45. #define NAND_HY_4thCode         0x1D; X4 j  p  P5 W# i1 u% W0 p

  46. : k/ B, R7 `5 N: n( q
  47. #define FSMC_Bank_NAND     FSMC_Bank2_NAND
    9 {5 d/ s' s$ {7 g# O
  48. #define Bank_NAND_ADDR     Bank2_NAND_ADDR
    9 t; ?$ U2 G; q: {1 k
  49. #define Bank2_NAND_ADDR    ((u32)0x70000000)
    / T) B  u# ?0 O
  50. ; H& c7 u. l$ B" J  O: @
  51. /* Private macro -------------------------------------------------------------*/
    + P# a5 S+ i% D9 j5 w
  52. /*row address is in the unit of page 9 {$ }) F$ u4 v- P% G0 c: n+ t
  53. for HY nand data sheet --> address sequence --> A0~A11 as tail --> discard 1st & 2nd address cycle*/
    " N' Z2 K# h+ _; k  J; w- z/ C
  54. #define ROW_ADDRESS (Address.Page + Address.Block * NAND_BLOCK_SIZE)
    # ~7 X% \# W/ c7 q: H5 g
  55. : o+ O$ o+ u$ g1 B
  56. /* NAND Area definition  for STM3210E-LK Board  */
    ; H) x- Y$ C; g# t1 w
  57. #define CMD_AREA                   (u32)(1<<16)  /* A16 = CLE  high */, r% k+ [3 B0 [) [: R2 n
  58. #define ADDR_AREA                  (u32)(1<<17)  /* A17 = ALE high */  S) I: l6 `. a

  59. # o9 b" H7 S* X9 U0 a  ~" U6 r
  60. #define DATA_AREA                  ((u32)0x00000000)
    2 q& G# p  t3 S. \
  61. , @! i1 _4 n0 u$ a$ f
  62. /* FSMC NAND memory command */
    7 R5 _/ c2 M& o& k5 d, m0 r$ I- H1 y- ?
  63. #define        NAND_CMD_AREA_A            ((u8)0x00)7 P& z  f6 y1 `2 t) V2 S+ w6 A
  64. //#define        NAND_CMD_AREA_B            ((u8)0x01)
    4 ~; e0 C% T: Z- t' h
  65. //#define NAND_CMD_AREA_C            ((u8)0x50)
    ; i) v/ ~) _8 v8 ], V2 y4 V! J
  66. #define NAND_CMD_AREA_TRUE1        ((u8)0x30)7 }$ z- ~1 I6 Y% P7 P4 \/ f, d
  67. ; Z- W1 {  ?/ Q9 Q
  68. #define NAND_CMD_WRITE0            ((u8)0x80)
    8 T( v" X( Y6 M1 m5 B# N
  69. #define NAND_CMD_WRITE_TRUE1       ((u8)0x10)7 r9 Z) `4 ?. z( {; ~3 ~
  70.           X0 S3 ~& H$ w, g
  71. #define NAND_CMD_ERASE0            ((u8)0x60)
    $ g3 C* C  K: y/ e% H
  72. #define NAND_CMD_ERASE1            ((u8)0xD0)  
    . N- d/ s  n$ n2 i1 T4 j7 Q: X7 C
  73. 5 }( p% }2 _% r% h
  74. #define NAND_CMD_READID            ((u8)0x90)       
    / Q* r3 }% A8 l  m" t( v( Q
  75. #define NAND_CMD_STATUS            ((u8)0x70)
    8 O- p5 w! z3 t$ S' c4 b+ Q: @
  76. #define NAND_CMD_LOCK_STATUS       ((u8)0x7A)$ E" O! V5 v  F+ t( ]5 x
  77. #define NAND_CMD_RESET             ((u8)0xFF)
    2 f2 F2 _5 p8 t% B

  78. ; G! }) N7 }: W. X3 A/ L
  79. /* NAND memory status */2 Z* l7 P7 J9 {! r3 b4 ?3 x
  80. #define NAND_VALID_ADDRESS         ((u32)0x00000100)
    0 m: h4 E$ E1 v" \
  81. #define NAND_INVALID_ADDRESS       ((u32)0x00000200)! X: }) n& A5 I  |7 c! O
  82. #define NAND_TIMEOUT_ERROR         ((u32)0x00000400)
    9 g& ~2 Y; Z: s8 V
  83. #define NAND_BUSY                  ((u32)0x00000000)6 _' v) n' [3 W/ n6 \- D
  84. #define NAND_ERROR                 ((u32)0x00000001) // bit0
    6 `6 s, ?0 i( E2 [8 D5 o
  85. #define NAND_READY                 ((u32)0x00000040) // bit66 T# ~) C) ^5 i% x7 s

  86. 6 t  H2 B* i- g* z- p% |, J( ~
  87. /* FSMC NAND memory parameters */5 h0 V% b4 Z* t$ G9 `3 n
  88. #define NAND_PAGE_SIZE             ((u16)0x0800) /* 2k bytes per page without Spare Area */
    1 ]" o, M+ l' v
  89. #define NAND_BLOCK_SIZE            ((u16)0x0040) /* 64 pages per block */
    / \8 L' _* D$ {" J2 N/ f
  90. #define NAND_SPARE_AREA_SIZE       ((u16)0x0040) /* last 64 bytes as spare area */ 7 S& l: h8 _0 n! ^+ }: @
  91. #define NAND_MAX_BLOCK             ((u16)0x0400) /* max 1024 block */ , M8 u( v8 n, M; {  {5 }! l9 \
  92. $ H" i- R% V3 ^
  93. /* FSMC NAND memory address computation */# r7 y  V0 t! m" ?
  94. #define ADDR_1st_CYCLE(ADDR)       (u8)((ADDR)& 0xFF)               /* 1st addressing cycle */0 i. h  P9 M8 C" G
  95. #define ADDR_2nd_CYCLE(ADDR)       (u8)(((ADDR)& 0xFF00) >> 8)      /* 2nd addressing cycle */4 v" l$ K  D; J: `9 V
  96. #define ADDR_3rd_CYCLE(ADDR)       (u8)(((ADDR)& 0xFF0000) >> 16)   /* 3rd addressing cycle */( g' G' I, F) W, s* V* S
  97. #define ADDR_4th_CYCLE(ADDR)       (u8)(((ADDR)& 0xFF000000) >> 24) /* 4th addressing cycle */. f1 g* u0 a4 }7 \2 i; @% q
  98. /* Private macro -------------------------------------------------------------*/
    : m5 ~+ Q$ G- a: ]( b4 O
  99. /* Private variables ---------------------------------------------------------*/! m1 B7 j/ J) M5 W1 ]
  100. u8 page_data[NAND_PAGE_SIZE]; /*for temparoily hold the page data*/- k6 W: v/ o- L  v1 L  F
  101. u8 page_data_tmp; /* store 1st 2k main array data(flush) */2 p, x" \" K( h9 j
  102. . r% {9 a8 ~+ t* _
  103. NAND_IDTypeDef NAND_ID;
    0 k9 s  d  o* J( C$ h
  104. NAND_ADDRESS WriteReadAddr;
    - {8 r: Y4 ~# ^. H2 [! ^
  105. u8 TxBuffer[BUFFER_SIZE], RxBuffer[BUFFER_SIZE];  Q5 H! w* e8 i0 t
  106. vu32 PageNumber = 2, WriteReadStatus = 0, status= 0;
    2 z" Z; H0 S$ k# p0 `6 t8 q
  107. u32 j = 0;( v$ Q: A( D- Y% k
  108. /* Private functions ---------------------------------------------------------*/
    ) r# j& n0 j/ b3 F/ f' S( b2 E
  109. void FSMC_NAND_Init(void);
    1 e9 O5 N. b6 v
  110. void FSMC_NAND_ReadID(NAND_IDTypeDef* NAND_ID);
    ( y4 C( ~1 b, H) \. l4 J; {
  111. u32 FSMC_NAND_ProgramPage(u8 *pBuffer, NAND_ADDRESS Address, u32 NumPageToWrite);9 q) Z! {2 C/ R
  112. u32 FSMC_NAND_ReadPage (u8 *pBuffer, NAND_ADDRESS Address, u32 NumPageToRead);+ T( s% r5 S  y9 K0 `% V9 x
  113. u32 FSMC_NAND_WriteSpareArea(u8 *pBuffer, NAND_ADDRESS Address, u32 NumSpareAreaTowrite);
    / I# l5 u% G+ C( R
  114. u32 FSMC_NAND_ReadSpareArea(u8 *pBuffer, NAND_ADDRESS Address, u32 NumSpareAreaToRead);
    * n  C) K- c/ |! w2 S2 s
  115. u32 FSMC_NAND_EraseBlock(NAND_ADDRESS Address);
    7 }) p. O7 o5 ~+ t  j+ X
  116. u32 FSMC_NAND_Reset(void);; K/ V4 C9 b. g
  117. u32 FSMC_NAND_GetStatus(void);8 l- |2 R& N2 h6 ^9 }& N7 k) b
  118. u32 FSMC_NAND_ReadStatus(void);
    0 U  ?! J; f' m; Y2 \9 y
  119. u32 FSMC_NAND_AddressIncrement(NAND_ADDRESS* Address);
    9 a4 }7 R1 G- q! b0 q4 o
  120. - t0 T# O5 G5 Y
  121. void FSMC_NAND_Init(void): j; u9 N) z+ |/ o2 M$ g1 p3 y
  122. {
    5 v$ X8 l* B9 w1 }. U3 y+ P/ Z. L) b
  123.   GPIO_InitTypeDef GPIO_InitStructure; : |$ G" `; j1 |2 D; L2 ]0 Z
  124.   FSMC_NANDInitTypeDef FSMC_NANDInitStructure;
    % R$ O; N& P/ }$ q6 j( s/ w
  125.   FSMC_NAND_PCCARDTimingInitTypeDef  p;
    : y/ [/ Z2 P; i. d- i( J& X% ?/ ?
  126.   4 b9 Q5 _8 h3 w: ?/ z2 r
  127.   RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOD | RCC_APB2Periph_GPIOE | 8 y8 ?$ u: r1 \$ |: j' n
  128.                          RCC_APB2Periph_GPIOF | RCC_APB2Periph_GPIOG, ENABLE);$ O8 t2 m' D' T+ q( H' M7 b' ~! |
  129.   * f$ N6 T- D- v& a* y8 v
  130. /*-- GPIO Configuration ------------------------------------------------------*/5 g3 t) t; \. A9 E2 A! G6 q
  131. /* CLE, ALE, D0->D3, NOE, NWE and NCE2  NAND pin configuration  */
    : G# W) o/ a. H' O2 `( ]0 H
  132.   GPIO_InitStructure.GPIO_Pin =  GPIO_Pin_11 | GPIO_Pin_12 | GPIO_Pin_14 | GPIO_Pin_15 |  
    ( P% d- L, t5 D; z8 [$ P
  133.                                  GPIO_Pin_0 | GPIO_Pin_1 | GPIO_Pin_4 | GPIO_Pin_5 |
    & [6 Y% a9 B; M
  134.                                  GPIO_Pin_7;                                  2 b' s; _, _( H3 H' o6 T
  135.   GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
    9 X# ?: U+ |: b
  136.   GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;1 q1 ]' D6 b7 |2 K

  137. + i  S1 E# b6 r4 b0 ^/ T% R9 k; `* P
  138.   GPIO_Init(GPIOD, &GPIO_InitStructure);
    " `  B! d7 x7 |9 M7 N% P

  139. ' I0 \9 ~! t, I0 V" I8 _
  140. /* D4->D7 NAND pin configuration  */  
    4 ~' [7 ]# q- M* I6 N
  141.   GPIO_InitStructure.GPIO_Pin = GPIO_Pin_7 | GPIO_Pin_8 | GPIO_Pin_9 | GPIO_Pin_10;1 s; W1 _; w/ m7 h4 ^0 e7 A
  142. 7 ]; e* h0 u0 C0 K0 f3 A" {
  143.   GPIO_Init(GPIOE, &GPIO_InitStructure);/ T7 w! J) e1 j5 R

  144.   D: E( D& W) g

  145. 9 t+ _+ Z' ~5 R! ?9 M! h' [/ Y- c
  146. /* NWAIT NAND pin configuration */! e( B3 b( m8 _3 \# o9 f" [. R! T& x
  147.   GPIO_InitStructure.GPIO_Pin = GPIO_Pin_6;                                                            
    , O0 ]* Y3 |+ u/ E
  148.   GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;& S" z! }, N0 P) J
  149.   GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IPU;8 h8 S, Q9 |) p

  150. 7 C/ W% u4 W% s# E/ t/ r* p
  151.   GPIO_Init(GPIOD, &GPIO_InitStructure);
    6 |8 @8 b4 M7 T8 O8 q! P2 W  H
  152. 2 I+ Z" [' X2 k
  153. /* INT2 NAND pin configuration */  
      V8 G( L" Y7 \- T, d: |. n7 w' N) \
  154.   GPIO_InitStructure.GPIO_Pin = GPIO_Pin_6;                                                            
    4 R& q; b( z& H* I; |
  155.   GPIO_Init(GPIOG, &GPIO_InitStructure);
    / l  g1 W6 J! \) w
  156. 2 z/ C1 q0 R. c4 P8 N+ W6 Q
  157.   /*-- FSMC Configuration ------------------------------------------------------*/+ x0 Y9 d' S, O6 D
  158.   p.FSMC_SetupTime = 0x1;
    2 x+ d( ~, T  U: X* p8 Y. L* W* e
  159.   p.FSMC_WaitSetupTime = 0x3;
    & f- G3 h& ]; |0 _" l- @* k
  160.   p.FSMC_HoldSetupTime = 0x2;, ~/ j* e# K5 {, g4 u4 j5 J; K) N
  161.   p.FSMC_HiZSetupTime = 0x1;
    + z- ~6 P8 ^2 U0 i; u9 w8 K

  162. 3 G0 N# h& M0 M# O* a
  163.   FSMC_NANDInitStructure.FSMC_Bank = FSMC_Bank2_NAND;
    ' m) O5 \& Q$ w; z, H& n( C
  164.   FSMC_NANDInitStructure.FSMC_Waitfeature = FSMC_Waitfeature_Enable;. e5 G3 y* e! w% D
  165.   FSMC_NANDInitStructure.FSMC_MemoryDataWidth = FSMC_MemoryDataWidth_8b;' d9 K- d0 e2 S/ c6 C
  166.   FSMC_NANDInitStructure.FSMC_ECC = FSMC_ECC_Enable;
    # b3 s0 S/ [  m) s( ?' r
  167.   FSMC_NANDInitStructure.FSMC_ECCPageSize = FSMC_ECCPageSize_512Bytes;/ m; H0 L% x) ~( V7 J0 D$ f
  168.   //FSMC_NANDInitStructure.FSMC_AddressLowMapping = FSMC_AddressLowMapping_Direct;1 |: u4 }0 j3 y2 w: U
  169.   FSMC_NANDInitStructure.FSMC_TCLRSetupTime = 0x00;7 c8 L8 ^# S* Q+ }
  170.   FSMC_NANDInitStructure.FSMC_TARSetupTime = 0x00;
    . H3 `0 j& c, S
  171.   FSMC_NANDInitStructure.FSMC_CommonSpaceTimingStruct = &p;+ u8 E) i+ l( q5 c7 m1 b' |
  172.   FSMC_NANDInitStructure.FSMC_AttributeSpaceTimingStruct = &p;0 s% q/ F* i' v" z% R
  173.   FSMC_NANDInit(&FSMC_NANDInitStructure);2 }+ D; `7 ]7 @2 v9 R/ b. a# M& q

  174. 1 s" K5 W  x) t, j2 W2 o- q
  175.   /* FSMC NAND Bank Cmd Test */
    4 n7 Q4 P5 T* z- f; R0 g
  176.   FSMC_NANDCmd(FSMC_Bank2_NAND, ENABLE);6 x3 H6 S3 j3 V* t
  177. }  u  ?# B7 m7 t; X3 p
  178. ! L) O( D9 f8 s. U' R6 @
  179. void FSMC_NAND_ReadID(NAND_IDTypeDef* NAND_ID)
    : ^: L* I- s9 z- @* I
  180. {
    $ g0 G  r8 D9 x9 r8 r
  181.   u32 data = 0;
    5 A8 f  s; u4 }

  182. ( \5 z( ^* w! x( U% h' l8 H
  183.   /* writing 90h to the command register, followed by an address input of 00h*/        
    2 _$ b  _  y5 {0 Z0 q0 {
  184.   *(vu8 *)(Bank_NAND_ADDR | CMD_AREA) = 0x90;
    # Z- }: l1 _1 x+ M
  185.   *(vu8 *)(Bank_NAND_ADDR | ADDR_AREA) = 0x00;( l& q8 F( n: ^6 V1 O

  186. / P- R% ~% }8 Q0 ^
  187.    /* Four read cycles sequentially output the 1st cycle (ADh), and 2nd cycle (the device code) and
    4 O& S0 d& ~; h7 B/ J: F
  188.       3rd cycle ID, 4th cycle ID */        0 y& B/ e5 P4 C; o
  189.    data = *(vu32 *)(Bank_NAND_ADDR | DATA_AREA);
    3 s# A/ m( `' |( T, z
  190. + `# D) Y( f+ T* q/ q; _4 h2 O  u
  191.    NAND_ID->Maker_ID   = ADDR_1st_CYCLE (data);
    8 }5 y  i/ H8 c1 H4 M
  192.    NAND_ID->Device_ID  = ADDR_2nd_CYCLE (data);
    $ ^: y$ v' V9 k: |  o7 j
  193.    NAND_ID->Third_ID   = ADDR_3rd_CYCLE (data);. Z' Q1 L: c4 Y" y; a6 @
  194.    NAND_ID->Fourth_ID  = ADDR_4th_CYCLE (data);  # E; I& J( y% F- S0 _
  195. }
    7 A5 S& d; z0 c. V) L' b- p
  196. 7 C( P& W6 n- h1 ~6 b  r
  197. u32 FSMC_NAND_ProgramPage(u8 *pBuffer, NAND_ADDRESS Address, u32 NumPageToWrite)
    . s1 u8 l+ U2 K1 I' B  P3 h
  198. {3 @- q  w  X7 V3 }, k9 p2 e. c/ C
  199.   u32 index = 0x00, numpagewritten = 0x00, addressstatus = NAND_VALID_ADDRESS;8 w; o  \+ H; S
  200.   u32 status = NAND_READY, size = 0x00;& R- T! l# T# [( j9 T! _
  201. 7 ^, k- I  _. a+ ^( Q
  202.   while((NumPageToWrite != 0x00) && (addressstatus == NAND_VALID_ADDRESS) && (status == NAND_READY))
    + b0 F: n& T0 e$ Z0 D; I
  203.   {
    0 T+ _2 y/ ]$ P  @5 w
  204.     /* begins by inputting the Serial Data Input command (80h)*/7 H! ^( Q8 d6 t. [" K, B. U  I: D& V
  205.     *(vu8 *)(Bank_NAND_ADDR | CMD_AREA) = NAND_CMD_WRITE0;" p7 n% ]1 f8 f
  206.     /* followed by the four cycle address inputs */. ?0 W' ?& x8 V. _& z7 j* g
  207.     *(vu8 *)(Bank_NAND_ADDR | ADDR_AREA) = 0x00;  
    - y1 H* S+ t9 g% {: e
  208.     *(vu8 *)(Bank_NAND_ADDR | ADDR_AREA) = 0x00;  
    ) \" c% t0 T7 k4 h
  209.     *(vu8 *)(Bank_NAND_ADDR | ADDR_AREA) = ADDR_1st_CYCLE(ROW_ADDRESS);  
    ; k3 p: D8 P8 q0 r
  210.     *(vu8 *)(Bank_NAND_ADDR | ADDR_AREA) = ADDR_2nd_CYCLE(ROW_ADDRESS);  2 H8 [0 T! g7 s
  211. ! G$ M- o; Y. w) A, C4 @8 R
  212.     /* Calculate number of write operatin (the size of main array to be programed)*/7 f# V6 y: i! E5 Z
  213.     size = NAND_PAGE_SIZE + (NAND_PAGE_SIZE * numpagewritten);0 X# J8 j2 c# w) f
  214. $ f* t7 X) y  Z: m4 ?+ X  L
  215.     /* then serial data and tADL of min=100ns should be guaranteed */
    , m& `5 A. |% V: R# x4 T& p
  216.     /* tADL is the time from the WE rising edge of final address cycle - d3 D0 G! v" W. t# A. V1 y
  217.     to the WE rising of first data cycle. */
    6 Z( v8 ~4 ~) {+ H& ^8 s5 E
  218.     for(; index < size; index++); E: v/ ^, l; A  y3 W% E% S3 _
  219.     {
    . D' I0 u4 b2 C9 k
  220.       *(vu8 *)(Bank_NAND_ADDR | DATA_AREA) = pBuffer[index];
    , X) f8 g2 G5 X! W, }4 z
  221.     }  Y/ I9 n; a  N! A
  222.    
    . V) B  _$ S" l6 \
  223.     *(vu8 *)(Bank_NAND_ADDR | CMD_AREA) = NAND_CMD_WRITE_TRUE1;
    , H: m: X7 C* `' l* Y; T  L4 J) t

  224. 8 R9 i$ R" k. v* u% M
  225.     /* PG.6(FSMC_INT2) connect to R/!B of NAND flash */. b  Z0 A. R# o4 a7 [$ A# f
  226.     while( GPIO_ReadInputDataBit(GPIOG, GPIO_Pin_6) == 0 );
    5 a8 P$ L; p4 W  w9 E7 K% U
  227.     ! ^% Y# `1 R+ u* O9 U- }
  228.     /* Check status for successful operation */
    * h/ W2 l& F* K% ?* {3 ?* }
  229.     status = FSMC_NAND_GetStatus();$ @% q% L$ l- ~7 K
  230.       c4 \5 Y# `9 @# @
  231.     if(status == NAND_READY)% n5 v0 [9 c# m; x
  232.     {6 ?$ ?' O' m; t" e
  233.       numpagewritten++;! _' Q/ g8 O0 E
  234. * f6 @. @' P: O0 n  \
  235.       NumPageToWrite--;0 Y. L. Y. c# K, b3 h( ~

  236. / P' q& G3 G1 J/ `
  237.       /* Calculate Next small page Address */# F3 K& F9 [% L
  238.       addressstatus = FSMC_NAND_AddressIncrement(&Address);   
    * d. z0 j- F1 c5 ^$ y
  239.     }    + D9 _2 X. d1 V9 T
  240.   }* [! o% Y6 `9 e) F+ ]" r
  241.   " p& C7 o3 |% Z0 y- K) n3 y8 i2 W, T! W
  242.   return (status | addressstatus);
    4 `6 j0 l" j: ~+ }; ~* Z
  243. }
    : d5 ~! |* T! h
  244. 6 B6 X, i7 i' w) N" O! }
  245. u32 FSMC_NAND_ReadPage(u8 *pBuffer, NAND_ADDRESS Address, u32 NumPageToRead)
    + Z2 u* }+ y6 f) X
  246. {/ K( C" L. I" S) Z1 d3 K4 F  |. w" N
  247.   u32 index = 0x00, numpageread = 0x00, addressstatus = NAND_VALID_ADDRESS;
    6 u) Q5 _, {; D: T+ v1 @
  248.   u32 status = NAND_READY, size = 0x00;4 w9 f* N$ O! L# {

  249. & V% A4 H  u3 \- f) ]" ~
  250.   while((NumPageToRead != 0x0) && (addressstatus == NAND_VALID_ADDRESS))' O1 \5 M: X4 s& d6 k
  251.   {          
    # ~) }+ Y1 i. g* p) J( S
  252.     /* Page Read command and page address */
    ; e3 B, T2 m% }* |; r9 @# I
  253.     *(vu8 *)(Bank_NAND_ADDR | CMD_AREA) = NAND_CMD_AREA_A; 9 a. J/ g0 t6 `" i
  254.    7 G3 o+ e# M- |9 b1 d
  255.     *(vu8 *)(Bank_NAND_ADDR | ADDR_AREA) = 0x00; # x6 V0 N: U. N% G$ f
  256.     *(vu8 *)(Bank_NAND_ADDR | ADDR_AREA) = 0x00;
    ) g! h% g* M, _8 G
  257.     *(vu8 *)(Bank_NAND_ADDR | ADDR_AREA) = ADDR_1st_CYCLE(ROW_ADDRESS);
    : k( V+ w# m% t0 P
  258.     *(vu8 *)(Bank_NAND_ADDR | ADDR_AREA) = ADDR_2nd_CYCLE(ROW_ADDRESS);
    ) @4 Y7 f+ J+ ]7 E: t) f$ S
  259.    
    * E6 ^: u, {$ A* W
  260.     *(vu8 *)(Bank_NAND_ADDR | CMD_AREA) = NAND_CMD_AREA_TRUE1;
    6 c% ?2 d, Y7 m3 D* P

  261. ! P" q! K* w1 ?; y; k, z" l) ?
  262.     /* PG.6(FSMC_INT2) connect to R/!B of NAND flash */6 R! N5 U8 o/ C8 x6 ~
  263.     while( GPIO_ReadInputDataBit(GPIOG, GPIO_Pin_6) == 0 );7 z" u  o: F& C! p: _9 N' h
  264.    
    # h# j% l2 `& \* c
  265.     /* Calculate the size */
    + }' f) t; X3 s
  266.     size = NAND_PAGE_SIZE + (NAND_PAGE_SIZE * numpageread);
    ' {+ i. {1 D) h2 e+ O# z! K
  267.    
    ! z4 o# R( h3 `2 q& L
  268.     /* Get Data into Buffer */    9 J5 B$ Y+ a8 u$ G; Z& X$ ]
  269.     for(; index < size; index++). D6 j1 e8 Y+ I& B# R  E" v
  270.     {9 @! p4 e4 v) _" u
  271.       pBuffer[index]= *(vu8 *)(Bank_NAND_ADDR | DATA_AREA);
    6 c9 {) o' m: t) P$ I2 \) R
  272.     }8 D( L& _: r  A' x) ~% r# U+ w7 A

  273. 2 C- y& s4 S, L; b
  274.     numpageread++;$ g; N' {2 R/ h3 {) W
  275.    
    6 z+ ~( `+ w& |4 N5 A
  276.     NumPageToRead--;2 g8 a  W; s1 {# [% K7 M& u% D

  277. 5 \9 W8 m1 `# a5 ~1 {
  278.     /* Calculate page address */                                    
    4 p% h0 [/ h9 [
  279.     addressstatus = FSMC_NAND_AddressIncrement(&Address);
    - J% K% g+ m& l  n
  280.   }% M/ H8 a6 v9 E2 ~8 Z% K: ]* P

  281. / A* j$ S7 o! Y& D9 _' u0 S
  282.   status = FSMC_NAND_GetStatus();; ?  A8 f* {+ O( F: I9 t: Z5 g
  283.   . `4 B* H/ i) D3 |
  284.   return (status | addressstatus);
    + f1 Q& V4 x( M. X3 Y! a2 d
  285. }$ {7 p* ^6 \9 c. V

  286. 0 r6 I2 h4 X/ K$ N& F
  287. u32 FSMC_NAND_WriteSpareArea(u8 *pBuffer, NAND_ADDRESS Address, u32 NumSpareAreaTowrite)
    7 h" ?6 j( c/ U& Y% ]
  288. {
    0 i. e% t  l( S' H: y
  289.   u32 index = 0x00, numsparesreawritten = 0x00, addressstatus = NAND_VALID_ADDRESS;3 L+ Z2 V5 s5 n: a
  290.   u32 status = NAND_READY, size = 0x00; $ q, @+ K- ]. Y/ v+ ]& l8 n  v
  291. ) x6 u" ?2 m. T* l0 u) E

  292. ' d# S. e, \. t0 k$ S  M5 t! c
  293.   while((NumSpareAreaTowrite != 0x00) && (addressstatus == NAND_VALID_ADDRESS) && (status == NAND_READY))
    5 X; b- M" r3 M7 B& N+ ?) @
  294.   {    " V! v  d* ]( i( v1 e. A/ ]
  295.     /* read out main array data into page_data[] firstly */5 ]5 ?% w* c# [8 V( x7 \# ~
  296.     FSMC_NAND_ReadPage(page_data, Address, 1);
    9 p3 _' F- N* W5 H; I8 V7 t0 B# e
  297.    
    . ^, V4 w( B% _6 T
  298.    
    & ^5 X4 U/ ^" {$ t
  299.     /* Page write Spare area command and address */9 r, g- Q3 ^# u6 u
  300.     *(vu8 *)(Bank_NAND_ADDR | CMD_AREA) = NAND_CMD_WRITE0;& W# F' W' t( ~" p
  301. % F- g& g# B5 a: d
  302.     *(vu8 *)(Bank_NAND_ADDR | ADDR_AREA) = 0x00; 8 i2 @4 q) H4 H6 W: }$ |) E6 r
  303.     *(vu8 *)(Bank_NAND_ADDR | ADDR_AREA) = 0x00;
    % u4 o0 c" k  d* Z! E! i
  304.     *(vu8 *)(Bank_NAND_ADDR | ADDR_AREA) = ADDR_1st_CYCLE(ROW_ADDRESS);
    9 L8 ~3 y$ a% L, J
  305.     *(vu8 *)(Bank_NAND_ADDR | ADDR_AREA) = ADDR_2nd_CYCLE(ROW_ADDRESS);
    $ H7 k4 m) A* I) ^/ n6 O9 @

  306. / O1 W* g2 e" c  ~
  307.     /* PG.6(FSMC_INT2) connect to R/!B of NAND flash */
      ^5 g2 q/ s3 c6 Y
  308.     while( GPIO_ReadInputDataBit(GPIOG, GPIO_Pin_6) == 0 );! h; I4 F( v, G

  309. ) Q, H/ x- N. M+ Q5 E" @5 K
  310.     /* total number of write operation */: i& |% m3 A2 y5 ^1 d
  311.     size = (NAND_SPARE_AREA_SIZE+NAND_PAGE_SIZE) + ((NAND_SPARE_AREA_SIZE+NAND_PAGE_SIZE) * numsparesreawritten);2 l! c& [% X5 H: J
  312. ' A" Z/ X# X' R
  313.     /* Write the data */
    / e  A% o3 \8 ~; f& ^" U
  314.     for(; index < size; index++)2 S0 H1 Q5 P9 X* v* ^: u4 s4 h
  315.     {
    " A( a( [, O" q
  316.       if (index < size - NAND_SPARE_AREA_SIZE)
    # Q$ F5 P: T, o, G, T; S
  317.         *(vu8 *)(Bank_NAND_ADDR | DATA_AREA) = page_data[index - (NAND_PAGE_SIZE + NAND_SPARE_AREA_SIZE)*numsparesreawritten];
      w: O' k+ p0 l7 ]' V, X' o0 L+ L
  318.       else
    1 A9 a3 L) F1 _/ j$ Y) f
  319.         *(vu8 *)(Bank_NAND_ADDR | DATA_AREA) = pBuffer[index - NAND_PAGE_SIZE * (numsparesreawritten+1)];
    $ c: ^# U% Z6 D
  320.     }
    ) _3 h& k1 ?! c2 p/ W
  321.     # I. V* e/ V8 ~1 o6 ^
  322.     *(vu8 *)(Bank_NAND_ADDR | CMD_AREA) = NAND_CMD_WRITE_TRUE1;8 I" h. ]0 ?7 ^. e

  323. * U! ]! i2 q; m( P2 j
  324.     /* Check status for successful operation */' X: F4 {6 H; L7 W# l) V
  325.     status = FSMC_NAND_GetStatus();! V3 A0 }8 H* D2 P$ c" ]
  326. 9 U2 O5 Y8 B1 X6 k
  327.     if(status == NAND_READY)1 |7 z. d6 r& I, C8 N
  328.     {( `% i$ q5 p! t% F) d$ p5 l% s# @# {
  329.       numsparesreawritten++;      
    : ~- o  D5 N9 H" H: q/ r$ O5 M

  330. 1 P- b( M% ?% t# O# w# |5 j! y( M
  331.       NumSpareAreaTowrite--;  . ?) x! m3 Z4 q2 u: p  d* r% s
  332.    
    1 n  f# J1 d  ?+ N+ `* p9 I9 a
  333.       /* Calculate Next page Address */
    ) T" Q4 H$ I2 T9 `" O/ H: H
  334.       addressstatus = FSMC_NAND_AddressIncrement(&Address);* M5 S( K  K  t9 |" _7 @7 Z4 M5 a
  335.     }       3 E9 E3 f( |( A% U/ S
  336.   }
    . l) l+ ?+ `- \9 y/ T5 B' C
  337.   . `4 U- O, U9 P* w' z1 N
  338.   return (status | addressstatus);
    8 w+ A2 y9 k) L; O( C9 i
  339. }$ p" S7 A1 e" q
  340. & ^* j8 w- L9 W
  341. u32 FSMC_NAND_ReadSpareArea(u8 *pBuffer, NAND_ADDRESS Address, u32 NumSpareAreaToRead)
    % P8 W0 I+ x8 U& d5 E
  342. {
    9 a/ S% M) q  w3 E7 l) g# v
  343.   u32 numsparearearead = 0x00, index = 0x00, addressstatus = NAND_VALID_ADDRESS;
    * [# f4 O" R, f& R
  344.   u32 status = NAND_READY, size = 0x00;
    : Y/ a; e9 A" |: d( `
  345. 0 {2 ?2 h* W0 A) l( t+ C  p2 n5 |6 X
  346.   while((NumSpareAreaToRead != 0x0) && (addressstatus == NAND_VALID_ADDRESS))6 }5 R# @; I4 c, i. e3 @- \
  347.   {     & F. p" E. \3 @( A
  348.     /* Page Read command and page address */     , ?* J5 P: o' T1 f
  349.     *(vu8 *)(Bank_NAND_ADDR | CMD_AREA) = NAND_CMD_AREA_A; // no area B/C for HY& S5 C2 o1 ~2 [  \

  350. + D" [. z: s$ D( x+ }
  351.     *(vu8 *)(Bank_NAND_ADDR | ADDR_AREA) = 0x00;
    2 v$ P' l* Z- t# v, p5 L
  352.     *(vu8 *)(Bank_NAND_ADDR | ADDR_AREA) = 0x00;     
    - ~; p3 }; N; f4 ]* ~1 l; G' `: @6 ~
  353.     *(vu8 *)(Bank_NAND_ADDR | ADDR_AREA) = ADDR_1st_CYCLE(ROW_ADDRESS);     
    4 I& C6 `) \4 b( |  h
  354.     *(vu8 *)(Bank_NAND_ADDR | ADDR_AREA) = ADDR_2nd_CYCLE(ROW_ADDRESS);   
    8 G# F; z. ]5 ^9 N8 j

  355. 7 N3 T& j% M: O
  356.     *(vu8 *)(Bank_NAND_ADDR | CMD_AREA) = NAND_CMD_AREA_TRUE1;8 P. F# w" _( [  d7 x1 q% Z
  357. 8 q6 O% ]* I. \! V7 A
  358.     /* PG.6(FSMC_INT2) connect to R/!B of NAND flash */9 ]' }: Z# T! Z
  359.     while( GPIO_ReadInputDataBit(GPIOG, GPIO_Pin_6) == 0 );
    , t- d+ m" W( D5 z) V  D& F
  360.     $ y3 x3 l0 {' S5 N; N) h5 n
  361.     /* total number of write operation */
    - q) K7 W9 X8 ?4 p
  362.     size = (NAND_SPARE_AREA_SIZE+NAND_PAGE_SIZE) +  ((NAND_SPARE_AREA_SIZE+NAND_PAGE_SIZE) * numsparearearead);//# a# l" E1 a& F0 d
  363.         ' ^( W/ w0 w, i3 v
  364.     /* Get page data into temp-space and get spare data into Buffer */
    " C% ~4 K2 h8 W! e6 S2 A# ]
  365.     for ( ;index < size; index++)5 x" g: j$ J0 O/ w/ _$ C. m- v2 W
  366.     {
    / Z' U7 G1 [3 w4 p1 U2 u
  367.       if (index < size - NAND_SPARE_AREA_SIZE), y  k) O: k$ F9 E7 g0 V- }9 D
  368.         page_data_tmp = *(vu8 *)(Bank_NAND_ADDR | DATA_AREA);, w0 S' P3 ?$ B2 B3 D
  369.       else
    2 P( w, d# `8 S9 f
  370.         pBuffer[index - NAND_PAGE_SIZE * (numsparearearead+1)] = *(vu8 *)(Bank_NAND_ADDR | DATA_AREA);
    / B" B% T' B2 {+ ^9 V* S7 n" Y3 [
  371.     }  f. W8 j. s6 V5 e3 s% B, @, E8 Y
  372.    
    - m' @5 @0 {" l7 F( J8 ?) |
  373.     numsparearearead++;
    , _4 {. E; _* h' g  I2 W: S2 b
  374.     4 B6 {$ K4 V) K& \* M: j
  375.     NumSpareAreaToRead--;
    / `! {- y' V: A

  376. 5 {9 l. o7 u3 I/ @, a* ^; s
  377.     /* Calculate page address */                                    
    $ ~2 I0 g- y+ j+ K, R% X6 C
  378.     addressstatus = FSMC_NAND_AddressIncrement(&Address);
    3 P* ]/ j% F! y* z
  379.   }# E0 f' Q/ d2 l" e: n0 }

  380.   q* Z) F, M% e
  381.   status = FSMC_NAND_GetStatus();/ D6 o8 B4 ^8 B8 x
  382. 0 D4 }, N- K; `7 B0 F) ~' Q" u
  383.   return (status | addressstatus);! \8 d1 h/ W" Q: Y
  384. }4 b; ~) }; a( R: s+ F+ Q; u  R
  385. $ c. S8 k2 n% b- E- Z' y
  386. u32 FSMC_NAND_EraseBlock(NAND_ADDRESS Address)
    / J+ I- a; J5 p) j1 i' q
  387. {- [1 L9 X- O$ H* q
  388.   *(vu8 *)(Bank_NAND_ADDR | CMD_AREA) = NAND_CMD_ERASE0;- `" i" B, r6 [" W

  389. 7 H( `+ S/ v1 e/ e7 L$ s' r
  390.   *(vu8 *)(Bank_NAND_ADDR | ADDR_AREA) = ADDR_1st_CYCLE(ROW_ADDRESS);8 Q9 \2 k: I+ v8 T+ b" J
  391.   *(vu8 *)(Bank_NAND_ADDR | ADDR_AREA) = ADDR_2nd_CYCLE(ROW_ADDRESS);
    ' [6 I* g, V$ x
  392.                 8 T9 c( a) ?+ Q, P6 m
  393.   *(vu8 *)(Bank_NAND_ADDR | CMD_AREA) = NAND_CMD_ERASE1; # c: s  h$ t$ f# @. ]! w  R
  394. / k- c8 Y) S! y1 G# z3 a
  395.   /* PG.6(FSMC_INT2) connect to R/!B of NAND flash */
    & A  M( N6 C2 O" t
  396.   while( GPIO_ReadInputDataBit(GPIOG, GPIO_Pin_6) == 0 );5 L/ Z) u* C: @1 ?  P$ o
  397.    
    & Z: F! j5 M0 m, c
  398.   return (FSMC_NAND_GetStatus());
    0 o2 I) I8 W+ C  K* q
  399. }3 |4 C+ Z" ~9 a5 o2 t$ X4 q2 e7 ?4 p
  400. 3 F# {3 ]4 q+ i5 {7 ^! ~6 a9 Q
  401. u32 FSMC_NAND_Reset(void)3 |7 y2 m: N- I0 Q( ~7 W
  402. {
    7 G1 q- N% i7 _6 b# t  h
  403.   *(vu8 *)(Bank_NAND_ADDR | CMD_AREA) = NAND_CMD_RESET;
    6 L' v- L3 E5 f- e" a' {9 a; E

  404. . u% v3 c, _# @9 L. n( h, t4 n- A5 k3 F
  405.   return (NAND_READY);. w; M7 Q  D! w7 d+ N
  406. }
    , a- L- F& t! o2 \: \2 @+ A) s# c
  407. % g  ]# s; c; Z
  408. u32 FSMC_NAND_GetStatus(void)
    2 o" M$ x, U' Y& c* R  A
  409. {
    ) v1 ]  q' R9 y/ o* e3 z6 N; m
  410.   u32 timeout = 0x1000000, status = NAND_READY;- K- K9 F3 k( i' W5 {7 l! j. X
  411. 6 E1 X% _$ m1 C* B& @3 H. L' G5 P* {
  412.   status = FSMC_NAND_ReadStatus(); + @  o, c; V4 x: W& F0 U( i

  413. ! C- C' m+ h' p/ W
  414.   /* Wait for a NAND operation to complete or a TIMEOUT to occur */* U7 O! g3 A0 Y3 w
  415.   while ((status != NAND_READY) &&( timeout != 0x00))1 O6 `! e) {8 m9 K9 t
  416.   {
    ' c7 v; ^+ E% p; W- _1 o
  417.      status = FSMC_NAND_ReadStatus();
    / a) v) F' ^/ ~
  418.      timeout --;      7 j6 B# [, P" ?
  419.   }
      Q/ f5 [' K- B; Z9 ^5 p- O

  420. 2 d0 ]. ?+ d' ~4 N! a# Y* ]
  421.   if(timeout == 0x00). E' w. L1 O9 T8 m$ z: t% Y
  422.   {          ( p' A# Z9 |6 a7 O' W2 x5 i
  423.     status =  NAND_TIMEOUT_ERROR;      ) N  U# a, L$ y3 E- L' c$ E
  424.   }
    # l( I* S! Z# P1 c9 l9 I. R2 ?+ A

  425. ) v( f5 O: E" }6 j1 x% J/ G6 N
  426.   /* Return the operation status */* N- ~+ F, u* v; N3 {
  427.   return (status);      # r0 i, Q& W, s% i
  428. }
    , ~' f( D( C: U4 e  C- [
  429. & `/ i6 f/ [8 p4 e, ~
  430. u32 FSMC_NAND_ReadStatus(void)
    / N7 K' [5 I. {5 O7 X
  431. {
    5 Z% D8 e. q9 p+ z/ S
  432.   u32 data = 0x00, status = NAND_BUSY;4 b6 Q8 O5 m  ~3 S+ I2 w
  433. - ~$ c8 Z$ a  F/ ]" ]
  434.   /* Read status operation ------------------------------------ */) c0 m8 U2 l) w' G' n
  435.   *(vu8 *)(Bank_NAND_ADDR | CMD_AREA) = NAND_CMD_STATUS;5 x* E5 b5 i* y* H" q
  436.   data = *(vu8 *)(Bank_NAND_ADDR);
    $ ^! j7 W. z4 @
  437. 4 s1 ^1 b$ I+ }
  438.   if((data & NAND_ERROR) == NAND_ERROR). I* O8 L. I3 H) Y" X2 N6 o8 l! e
  439.   {
      K/ B+ u$ `0 c/ ?
  440.     status = NAND_ERROR;
    / f3 O& ^& @  g! b' F; y' F8 t" R7 d
  441.   } 6 }' c9 r3 J5 d* E1 k
  442.   else if((data & NAND_READY) == NAND_READY)
    7 Z, v6 H# y0 c# N, O9 @: }
  443.   {
    $ g3 f5 `! B0 a4 w' o9 Q8 _% K: m
  444.     status = NAND_READY;
    ) N& ?. ^( u$ _. M' U5 v; k. n9 ~+ n
  445.   }9 W; G+ ], J6 V7 `; X
  446.   else! W) s- g2 z) ?/ z8 O6 H7 L$ D) t
  447.   {, P1 Q% S3 W. V1 ], Z6 O
  448.     status = NAND_BUSY;
    / u+ m# A4 a' {$ `9 X
  449.   }5 Z8 }3 F% c) x7 n1 k: j' N
  450.   ; f+ X9 ?3 Z; K% `6 r
  451.   return (status);
    0 y5 N2 I: B" d; {+ S2 c
  452. }4 U" K9 ?6 A# t3 S6 s
  453. 5 C0 L+ h  @9 a' ^
  454. u32 FSMC_NAND_AddressIncrement(NAND_ADDRESS* Address)
    ) a, S% p/ ?  Z# J6 G# f
  455. {
    . p1 J( X, C8 C8 R" B( `
  456.   u32 status = NAND_VALID_ADDRESS;9 R+ V0 M6 B9 f4 w; b( m  D
  457. ! O1 |5 ~( }0 U! c5 X
  458.   Address->Page++;
    5 L4 P( a7 y" X8 G8 ~& X
  459. 9 g: p  a' G) h- V+ l/ J" |
  460.   if(Address->Page == NAND_BLOCK_SIZE)
    / N; v; O/ y7 A" q
  461.   {
    # ]3 W6 L4 f1 O- Q! s& g0 c+ w: R
  462.     Address->Page = 0;
    5 `7 I- x$ c2 B" `  C: k
  463.     Address->Block++;% y! F! n* s# d
  464.     ' \4 j) ], i. [( I
  465.     if(Address->Block == NAND_MAX_BLOCK)
    - V" \4 q# k) U/ L7 \0 v0 T
  466.     {, J) D$ k' @+ t6 M+ ^
  467.       status = NAND_INVALID_ADDRESS;
    0 d7 T, C- r% |/ M) i7 \( i6 a
  468.     }
    3 Q4 ^) Q7 X" O% C
  469.   }
    % P" r7 h/ X, k4 S
  470.   * E# a4 T2 y( w
  471.   return (status);+ C8 X* U6 \& s1 C0 u
  472. }
    9 {- Y0 ^& q2 ]* C2 F/ x
  473. # F8 M' E# R! z" U3 ^2 L

  474. , C9 l& Q% L# x, h. P
  475. void Fill_Buffer(u8 *pBuffer, u16 BufferLenght, u32 Offset)
    , v( ~1 E' z  Y5 d) {8 B  d
  476. {
      `7 w. m, N9 A+ b2 G4 y6 Y
  477.   u16 IndexTmp = 0;% Q; c7 ^2 B( E

  478. , L6 E5 U* Y/ O; X+ j3 W
  479.   /* Put in global buffer same values */
    " x, u! K/ N1 n) i. m
  480.   for (IndexTmp = 0; IndexTmp < BufferLenght; IndexTmp++ )
    / F0 Z, ^( K" N
  481.   {" K  _0 t  y/ M
  482.     pBuffer[IndexTmp] = IndexTmp + Offset;7 k$ V, i0 L0 ]6 @6 e& A6 t
  483.   }
    0 t! a$ a, R7 ~- Z1 Q
  484. }
    - }- }. l. G' D/ O$ J

  485. 3 y4 f% H7 ?/ d3 w& F
  486. void fmain(void)
    3 K# J/ g5 [$ h
  487. {; g0 d# D, ?2 _$ E4 Z! m
  488.   RCC_HSEConf(9);//72M
    / n8 _3 T3 I' C2 c+ y2 M4 _. f6 {

  489. 3 X1 e: S6 N2 B: w2 t  V4 ^- o
  490.   RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOF, ENABLE);
    0 n5 k+ {# Z! C: V1 s
  491.   2 w1 Q: l  @2 U
  492.   /* Configure PF.06, PF.07 and PF.08 as Output push-pull */- w7 Z! E! X( i" W  w0 Y6 h
  493.   GPIO_InitTypeDef GPIO_InitStructure;% c) w/ \0 J5 }, q* O- l4 C' k
  494.   GPIO_InitStructure.GPIO_Pin = GPIO_Pin_6 | GPIO_Pin_7 | GPIO_Pin_8;$ b2 h' J9 ^# Q% ]. s& ~
  495.   GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;) c/ L' F) f) \, Z1 ?1 z- Y
  496.   GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP;
    * E  A* J6 F. L. b: u+ c# C) \
  497.   GPIO_Init(GPIOF, &GPIO_InitStructure);0 f5 k; x' i5 ~7 E& [$ d( [3 S3 {

  498. * G3 m+ X* @& z# f2 N
  499.   /* Enable the FSMC Clock */1 m) o2 f" u3 ]4 E7 Q! }( I
  500.   RCC_AHBPeriphClockCmd(RCC_AHBPeriph_FSMC, ENABLE);& x9 B" O" z' S, g8 S: w2 N
  501.   % c% M& c7 w' w1 R) I# d- O
  502.   /* FSMC Initialization */
    ( d; d2 K) U; d# f. @
  503.   FSMC_NAND_Init();2 D* i8 ^% M6 l/ r8 |
  504. 6 l( ^7 Y" K2 g4 T9 A' O* R
  505.   /* NAND read ID command */
    5 }: n" t+ P9 a' ]
  506.   FSMC_NAND_ReadID(&NAND_ID);
    5 _1 U% _0 ^, \, }4 y5 Q9 H

  507. . j( V) j( N% f
  508.   /* Verify the NAND ID */
    9 U% H0 T. T' H$ C" P$ V# I
  509.   if((NAND_ID.Maker_ID == NAND_HY_ManufactureCode) && (NAND_ID.Device_ID == NAND_HY_DeviceCode))
    ! T- C; v/ \6 e% R4 E0 F8 W
  510.   {. `5 J3 }0 y$ u$ |$ Q$ s
  511. # e" s% X7 t+ Y/ e4 |
  512.     /* NAND memory address to write to */
    # b0 j2 C. M5 l1 i6 P
  513.     WriteReadAddr.Block = 0x00;* y4 A3 X; s) F! _# l
  514.     WriteReadAddr.Page = 0x00; + V: [6 s7 g: M+ y" e

  515. $ s; s+ ^' {% y  Y. ?
  516.     /* Erase the NAND first Block */
    # f, v  D' O1 u
  517.     status = FSMC_NAND_EraseBlock(WriteReadAddr);$ v9 ^6 W( Q; x3 G' Y: i# q

  518. ; Q1 k- q% ~) F9 M- a) f  U
  519.     /* Write data to FSMC NAND memory */
    / ?$ Z) P" v$ [, p$ ]. Z9 ~$ `. X
  520.     /* Fill the buffer to send */
    , Z8 W- N  A$ \
  521.     Fill_Buffer(TxBuffer, BUFFER_SIZE , 0x66);4 R2 B" }% F$ t# ^# `
  522. 7 e/ q; r! Q2 E) N2 O
  523.     status = FSMC_NAND_WriteSpareArea(TxBuffer, WriteReadAddr, PageNumber);9 [9 l0 ]& L6 l! z; R# H

  524. , ]& Y  ]9 R4 r  D* G: |6 o
  525.     /* Read back the written data */
    ! X% D; j. s, _/ N
  526.     status = FSMC_NAND_ReadSpareArea(RxBuffer, WriteReadAddr, PageNumber);
    - z2 G- v$ \% P5 X$ `
  527.    : ~6 i! ?& A* P8 i" [. H
  528.     /* Verify the written data */1 X& p) A3 _0 V5 r* k: ]
  529.     for(j = 0; j < BUFFER_SIZE; j++)
    ! g, [+ \) x& D! V% M- d
  530.     {
    9 }" J4 u$ v3 K$ K  W
  531.       if(TxBuffer[j] != RxBuffer[j])
    1 M5 B0 j5 N6 x! ], F6 W
  532.       {     
    % M! T8 P6 Q  s' k/ G8 h8 J
  533.         WriteReadStatus++;
    6 u8 z5 @5 V6 T! b6 f' M
  534.       }
      M5 d6 q7 I! Q6 s
  535.     }1 {, V2 N* U' h" U

  536. / h. z+ F5 _5 J* W" f/ D
  537.     if (WriteReadStatus == 0), \7 H* ]# Y3 r8 b7 Z+ n% s7 z
  538.     {' U; s1 U* w7 h, [: \
  539.       GPIO_SetBits(GPIOF, GPIO_Pin_6);//执行结果- m! w4 N/ M6 r- Q* {
  540.     }: ^$ d# N4 l4 Z8 M9 P
  541.     else0 r" c0 m9 x. f' R3 ~4 @
  542.     {
    . e: w9 C5 |% w& }' F' ?) Z" E( G
  543.       GPIO_SetBits(GPIOF, GPIO_Pin_7);     1 G/ q$ K) j; L( f# Q
  544.     }
    2 E6 }5 k$ P. ^* s+ t  U
  545.   }& C/ }! B' A- p/ }
  546.   else) s4 i$ u- ^8 g
  547.   {
    ; p; ^+ b) G' J; k
  548.     GPIO_SetBits(GPIOF, GPIO_Pin_8);  / ^5 A( E  j5 x& E* g
  549.   }
    0 U$ o: C/ W3 n+ U( ?+ V& Z7 u% f
  550. }( I1 z  _! b" W$ c( O! f' ^
  551. % _- k- A8 Z+ R) E  P2 x$ S
  552. #endif# h9 \- W$ t( ]9 D" m( L
  553. /******************* (C) COPYRIGHT 2008 STMicroelectronics *****END OF FILE****/
    0 ^6 |/ @3 L+ i9 V. C, Q
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Dylan疾风闪电 回答时间：2016-1-7 15:14:08
  1. /**
    & n/ o# ]6 u2 E, d" w
  2.   ******************************************************************************/ j) @, {( F/ Q# C% O1 G' v* {" v
  3.   * @file /I2C_M24C02EEPROM.h/ r5 j; l" ^1 c& O5 m  p
  4.   * @author    xd.wu
    4 B$ n% v1 P  f! u8 Y; u3 B. b
  5.   * @version   V1.0
    / B5 E* Z4 P3 i5 b
  6.   * @date     2012-4-17
    * n3 r* I) V9 O  y1 i& ^$ T8 h  [
  7.   * @brief    I2C：(ST的I2C问题很多，建议不用，选择IO口模拟)--测试不通过，待调整《申明：这里只是老的资料，描述也是以前的。故对存在问题的代码也不进行优化！》
    4 b7 ]& ?+ T/ ]) \4 u* D; _/ ^* G
  8.   ******************************************************************************# t" j# I/ }6 R) O1 A9 R" c
  9.   *用途：# o( ~  R5 z% j7 x& M5 T
  10.   */2 w* @- P& Z* \+ q( c/ _& S- r
  11.   /*实例应用步骤：
    $ B  x: B, B2 z
  12.   //1."main.cpp"调用fmain()
    " X# }/ ^& ~  N. g
  13.   
    3 U, j, n+ |) p8 v, p
  14.   //2.Watch中观察
    + G; L; ]9 _. n" v0 |: P/ Q
  15.   Tx1_Buffer == Rx1_Buffer; s" i; m+ k5 R: a, G' j
  16.   Tx2_Buffer == Rx2_Buffer
    9 T! d; f3 X, @# [3 M/ ~. e
  17.   TransferStatus1,TransferStatus2
    : H* |* y! \8 [4 D$ _% ^
  18.   */
    7 O% l% k/ Y8 J/ r- Y  D+ w5 I% v- C

  19. + T: m/ X# a* I6 o' B* {6 K+ o
  20. #ifndef __I2C_M24C02EEPROM_H9 l/ s8 q! t1 U' k3 W1 r
  21. #define __I2C_M24C02EEPROM_H
    ( t( E4 I6 W# Y) m4 r8 }
  22. /* Includes ------------------------------------------------------------------*/* e4 h) v( t$ X. I9 o) P* A) t
  23. #include "std32periph.h"! i5 Y& }* Z. Y" ]. n) |4 a& ^

  24. : `9 `" i: C& z6 v+ L
  25. /* Private typedef -----------------------------------------------------------*/) U  R1 e/ V! K$ ?; ~+ _1 J* N
  26. typedef enum {FAILED = 0, PASSED = !FAILED} TestStatus;: S% B& Z! e2 l! h' Z" }& ^
  27. typedef struct  ~6 G8 L# O% r
  28. {! E7 I2 k+ t2 ?9 e9 J& }0 A
  29.   u8  *Tx,*Rx;
    6 r6 J2 i: L! `( N, c3 N) U! b
  30.   u16 Address,count,Max;6 j6 J4 F$ i8 J  C- r7 `& n2 y
  31. }I2CTYPE;
    + a* y0 @, |' h- j3 t4 h: N8 b
  32. /* Private define ------------------------------------------------------------*/5 x$ n9 C6 R6 ~1 M
  33. #define EEPROM_WriteAddress1    0x05
    ; w: D# `7 Z8 a+ _' E/ k+ }2 d3 x7 O5 Y
  34. #define EEPROM_ReadAddress1     0x05! I3 B% R- ]$ Z: o  m/ B
  35. #define BufferSize1             (countof(Tx1_Buffer)-1)
    4 Z. P5 U7 R6 n! v* w  K
  36. #define BufferSize2             (countof(Tx2_Buffer)-1)5 v& r  Z9 R& V0 x4 Y2 R
  37. #define EEPROM_WriteAddress2    (EEPROM_WriteAddress1 + BufferSize1)
    ) S' W- c$ d: W# L
  38. #define EEPROM_ReadAddress2     (EEPROM_ReadAddress1 + BufferSize1)# V  J7 K  X, W; C

  39. ' D! a# N6 M7 Y, v3 x' E: F# s
  40. #define I2C_Speed               4000002 q5 ^* Y) i, \. e# g6 L
  41. #define I2C1_SLAVE_ADDRESS7     0xA0+ Q' w# E2 M& ^& v- c2 Y) t6 \  c. T
  42. #define I2C_PageSize            8 /* page size of the I2C M24C02 EEPROM */ + ~; ?& U7 q3 b: j1 C' s
  43.                                  /*  implemented on the STM3210E-LK board*/
    5 u) j5 y& i4 R% E
  44. /* Private macro -------------------------------------------------------------*/3 H7 r* ?; w* W( Y8 ~
  45. #define countof(a) (sizeof(a) / sizeof(*(a)))% [1 t. ~: I/ d( B
  46. /* Private variables ---------------------------------------------------------*/% `# i5 k+ b# X1 L8 C( e
  47. u8 Tx1_Buffer[] = "LLKKMMJJ";//"/* STM32F10x I2C Firmware ";
    : R. `6 X5 W+ _; B
  48. u8 Tx2_Buffer[] = "Library Example */";3 V, ]  k/ d  ^+ L. W
  49. u8 Rx1_Buffer[BufferSize1], Rx2_Buffer[BufferSize2];
    ' a! H0 _* b1 m9 u
  50. volatile TestStatus TransferStatus1 = FAILED, TransferStatus2 = FAILED;" B% ?% W3 [0 `- R8 f  i
  51. const u16 EEPROM_ADDRESS = 0xA0;//#define EEPROM_Block0_ADDRESS   0xA0   /* A1 = 0  A2 = 0 A3 = 0*/
    9 U( |+ q5 U0 e" r
  52. 5 G$ H0 M4 v. c' f
  53. I2CTYPE msgI2C;( n* D4 T# V% l5 w  |! u
  54. bool status = false;
    , ]2 X4 ^) S0 y; `& F3 x9 C
  55. /* Private functions ---------------------------------------------------------*/1 T9 p. f$ b0 J& f3 i7 e

  56. 7 a9 F0 w& P9 a. y8 W2 S. i
  57. 2 E; _" e  K! o" i+ G: S
  58. bool I2C_Event(I2CTYPE &msg)
    ' t6 M. T4 f. r; m$ J$ h
  59. {8 T( X1 A6 A, z$ C
  60.   //#define  I2CMode_Slave5 `, N- J6 F4 e
  61.   //Read SR1 and SR2,then save as I2CdwSR: h( ~+ ~1 y+ Q1 v8 r! f1 h8 C5 A
  62.   u32 SR32 = I2C1->SR1 & 0x4FF;2 B2 E5 |1 U0 D
  63.   SR32 |= (I2C1->SR2 & 0x7)<<16;
    5 g/ r2 Q, \4 a: w
  64.   ; ~9 P8 E% g9 u0 i
  65.   switch (SR32)0 u" g( R6 n& O9 u9 z& x# z# H& }
  66.   {# V( R+ |. L5 y0 e( L+ K& z
  67. #ifdef  I2CMode_Slave
      ^+ p8 }, ~% z( j
  68.   //Slave Mode处理事件的优先级 EV2=EV3 > EV4=EV3_2 > EV1=EV3_18 G; ?0 ^- Y3 q, b' a
  69.   case  0x00020040://I2C_SR_EV2:           // BUSY and RXNE flags5 d# q9 E" J0 Q; _' T, B% S" ^+ {
  70.     msg.Rx[msg.count++] = I2C1->DR;# k, t2 O6 K: [( o5 {
  71.     break;0 L/ @, ?& B1 ]# }# `
  72.   case  0x00060080://I2C_ST_EV3:           // TRA, BUSY and TXE flags* B$ I% P6 n* p' \* E6 b
  73.   case  0x00060084://I2C_ST_EV3_1:         // TRA, BUSY, TXE and BTF flags
    ' v' ?8 ^! p0 j- C$ L+ t8 g# }
  74.     I2C1->DR = msg.Tx[msg.count++];. ]7 L7 L* ^9 g1 U( M7 q9 q! S! f
  75.     break;
    - I5 q1 [  a- w- Q5 H$ t
  76.    
    / t& D' u8 I% z6 _& X8 T
  77.   case  0x00000010://I2C_SR_EV4:           // STOPF flag; Z1 z2 i0 _; d* P# X( @& T) s
  78.     I2C1->CR1 |= 0x0001;
    " q6 H% `4 J; v2 l9 H
  79.     break;
    ! \, N7 i. [& R0 Z  D6 A
  80.   case  0x00000400://I2C_ST_EV3_2:         // AF flag7 x4 ^: R" ]* M' n6 W
  81.     I2C1->SR1 &= 0xFBFF;
    ( J% s1 v- A, P0 Z1 P
  82.     break;/ e9 E1 r4 h- F3 ?# Y" O" R
  83.     $ M: Q; G; G6 k% C! m" M
  84.   case  0x00060082://I2C_ST_EV1:           // TRA, BUSY, TXE and ADDR flags) C- U" {) a" A6 x5 C
  85.     msg.count = 0;/ V; N  D% H* n5 ^: z+ F, `
  86.     break;
    " B9 G) A6 u) f3 \. C9 P6 r
  87.   case  0x00020002://I2C_SR_EV1:           // BUSY and ADDR flags! I2 S! k0 I) ^% e4 B
  88.     msg.count = 0;* m% }7 a. m% I6 a
  89.     break;" k. P0 \1 `/ c' K" ?
  90.     2 y. z# G: x! M4 Q; ?# U/ [6 P
  91. #else+ ]; j+ G+ G/ ?* X8 Y; q
  92.   //Master Mode处理事件的优先级 EV8=EV6_1=EV7_1 > EV7= > EV5=EV6=EV8_1=EV8_21 n, s6 r3 M: }5 f) Y
  93.   case  0x00070080://I2C_MT_EV8:           // TRA, BUSY, MSL, TXE flags! N1 \  `7 A. w$ D
  94.     if (msg.count < msg.Max)
    ' n: l8 |  ~1 H7 k# Q
  95.     {/ c) `, |0 l' Z5 ?6 ~' U' d( H
  96.       I2C1->DR = msg.Tx[msg.count++];
    ( r3 }  l/ S2 l; W) ^# y& C
  97.     }
    : B% o8 A& a0 o8 @* M8 h
  98.     else! o( l! d, B4 `# [
  99.     {4 _4 f" {- r/ M4 T
  100.       I2C1->CR2 &= 0xF9FF;, [& {1 N$ l1 @; F
  101.       I2C1->CR1 |= 0x0200;//STOP1 w- p5 s7 J# ?- ~9 ]7 ]3 G: F% v
  102.     }9 r# v# T9 X. y& {
  103.     break;
      z2 D& E4 `( H, s. o# I$ H# R
  104.   case  0x00030002://I2C_MR_EV6(EV6_1):    // BUSY, MSL and ADDR flags
    ) p- z) T' X, _- [" ?8 Y# N, j. S
  105.     msg.count = 0;0 ]0 g, U& w% s  Y1 n
  106.     if (msg.Max == 1)//只接收1个字节的情况' K! ^' @7 z( T
  107.     {
    0 w% K$ j4 p6 P7 A
  108.       I2C1->CR1 &= 0xFBFF;//ACK=0+ N2 g2 n6 Y0 F* f9 `& B! j8 `. s
  109.       I2C1->CR1 |= 0x0200;//STOP
    9 d5 A0 e2 Z9 T" s2 x  E3 M
  110.     }& `. E* C! `+ W
  111.     break;4 `9 C8 y' t3 V% ?: j0 p: I
  112.   case  0x00030040://I2C_MR_EV7:(EV7_1):    // BUSY, MSL and RXNE flags5 w9 R' j2 R8 i. x: j
  113.     msg.Rx[msg.count++] = I2C1->DR;# L* j8 ~' \, x3 B7 S" y
  114.     if (msg.count == (msg.Max-1))$ {7 O0 m; b5 ~, h7 @
  115.     {
      s, F6 q$ v! m" t0 B! [+ z1 B6 S
  116.       I2C1->CR1 &= 0xFBFF;//ACK=0
    ; }$ l) f9 {" @1 ?2 q4 W
  117.       I2C1->CR1 |= 0x0200;//STOP! _: a& ~( _( `1 M2 r2 S
  118.     }5 z: |: c0 t6 r4 z: B0 W3 s8 S
  119.     break;
    7 x2 @# W* R, a8 i" Y+ t7 ]
  120.     " j( |0 k/ O- z2 Z3 w% ^' }
  121.   case  0x00030001://I2C_MTR_EV5:          // BUSY, MSL and SB flag
    $ I5 U* ~/ X" H
  122.     I2C1->DR = msg.Address;5 ~2 B% `* n4 j* z& T1 r+ k
  123.     break;
    & c# ?: i: d2 N9 [1 ?. m5 f
  124.   case  0x00070082://I2C_MT_EV6:           // BUSY, MSL, ADDR, TXE and TRA flags
    * n& v. @  U) T4 d, W- G1 p
  125.     msg.count = 0;0 N& f& Z! e6 m2 [
  126.     break;
    . m( P+ x7 Y7 T2 ]: a2 z
  127.   case  0x00070084://I2C_MT_EV8_2:         // TRA, BUSY, MSL, TXE and BTF flags2 F2 c5 G7 n' V. J! t
  128.     I2C1->CR1 |= 0x0200;//STOP+ ]2 d2 b; u( d/ B
  129.     break;
    : w3 j$ F: o% j0 z3 s
  130. #endif
    + V. D3 w) J' d' V4 Z2 R7 K: h- R
  131.   default:; K! Y& G4 |8 a6 s: z
  132.     return false;//异常状态
    " {: [6 g: g3 [* j8 y; P  a
  133.   }
    2 j/ }8 ~) s' D
  134.   return true;; ?& C8 C" a2 z3 o, f, I
  135. }1 {0 e. F- }7 Z7 n1 D% Y; y
  136. * F8 V* ?  x5 b+ T" K+ s
  137. void I2C_EE_WaitEepromStandbyState(void)      
    . W4 E2 ^% b# [, D, [
  138. {
    7 c  [' [: g* L2 V+ P# ^# }" M. b$ A
  139.   vu16 SR1_Tmp = 0;
    # M1 L7 _% ]# D" u* b) h
  140. ( X1 c, y; H; c+ B
  141.   do
    ! {0 Y; d1 A. a: M
  142.   {
    4 E" T* u2 V" D( f) a
  143.     /* Send START condition */  l8 K4 s" l- D* k
  144.     I2C_GenerateSTART(I2C1, ENABLE);* _2 O0 e$ W! d
  145.     /* Read I2C1 SR1 register */
    , F: i5 P: q, h1 K5 a! \9 b6 Q
  146.     SR1_Tmp = I2C1->SR1;. o" F* R) y( m0 ~9 D
  147.     I2C1->DR = EEPROM_ADDRESS & 0xFE;/* Send EEPROM address for write */( l) e" h% p% p% j6 P$ `
  148.   }while(!(I2C1->SR1 & 0x0002));
    9 _! O3 ~! e0 [3 @- j
  149.   
    9 ~; Y% _5 h  o9 L
  150.   
    % s" s9 l' T! U. y( m
  151.   if(I2C_GetFlagStatus(I2C1, I2C_FLAG_AF)). h% Q9 O. B5 {
  152.   {
    5 E& J: O" J0 k# l
  153.     /* Clear AF flag */6 }: N8 u% @3 {3 ?0 t2 J) G
  154.     I2C_ClearFlag(I2C1, I2C_FLAG_AF);$ {6 E3 y  k5 v/ X% V& r% K: T
  155.   }
    / D. r/ S( l3 r! i6 H) u
  156.   
    3 n6 d4 e2 k$ e
  157.   /* STOP condition */    * x9 U2 A- u6 {2 z* z! n3 X% B
  158.   I2C_GenerateSTOP(I2C1, ENABLE);
    . I9 A, I$ e: {" w8 O
  159.   
    1 M, W/ f# X# P- q( a$ |( b, l) z
  160.   /* While the stop bit is set */  
      e- v! ]& V2 y& d8 V- c) k
  161.   while (I2C1->CR1 & 0x200); " [; L9 ^# r+ A$ S+ u& l" k( P; T
  162. }: o' M- ^; B* u& k: R% B& P9 f' i/ {. a

  163. 3 ~9 n. x6 `) {& E: ~
  164. bool I2C_EE_PageWrite(u8* pBuffer, u8 WriteAddr, u8 NumByteToWrite). b( ~$ i/ Z8 x! a
  165. {$ X) g" D2 i) m: P1 @
  166.   u16 Timeout = 0x2000;
    7 v9 H: w8 T" U% R/ Z
  167.   
    % Z# n6 }  C; o1 `
  168.   while((I2C1->SR2 & 0x2) && Timeout)// While the bus is busy
    ' ~/ }+ S; N  a. O( N* x5 v
  169.     Timeout--;& C+ ]7 ^7 y( M2 ^
  170.   if (Timeout==0)* k$ r/ Q) `8 w) q: P
  171.     return false;$ b" |7 R% o$ z& C6 m9 [3 M  T
  172.   % j* \  L  p9 V& z5 ?; X) z
  173.   msgI2C.Address = EEPROM_ADDRESS & 0xFE;
    * t9 x4 b: Q+ q3 X8 C
  174.   msgI2C.Tx = &WriteAddr;
    & H+ Q: D1 z3 f6 n; |( ~
  175.   
    4 x) V$ \$ [3 u1 w0 r1 V2 g
  176.   I2C1->CR1 |= 0x0100;// Send START condition8 ~& V3 t3 C3 Q- [' f2 W
  177.   ( e& \5 i4 I! D3 e! K# W, B
  178.   //EV5; p' Z6 Z: Q9 V8 ]  }
  179.   Timeout = 0x2000;
      h. ?; w2 H" T6 R
  180.   while(!I2C_Event(msgI2C) && Timeout)
    # Q- L, x' O# d. e& j  G! F
  181.   {
      _& n! g2 M. h$ D5 ^, l  ^
  182.     Timeout--;* n2 G3 ^; [+ U3 W+ r6 H
  183.   }
    # r& [! [- w( g1 Z: ~' \; S$ J
  184.   if (Timeout==0)
    1 V) S7 P5 e- f: l4 c' }
  185.     return false;
    * c5 V( b- w8 n& B2 q5 U

  186. . M3 Z& h" S9 F% ?: l6 n9 i9 h
  187.   msgI2C.Tx = pBuffer;, {( C* d. ]6 I9 v2 z* m3 c
  188.   msgI2C.Max = NumByteToWrite;
    / Y& Z( {" P0 V2 g2 C- J
  189.   //EV6
    9 Y3 ]! J' }! w/ J9 V' ~2 y- j
  190.   Timeout = 0x2000;! c( ?% U: i, \9 i/ K) |/ Y6 L7 Q
  191.   while(!I2C_Event(msgI2C) && Timeout)+ Y7 |$ h6 {; h6 A4 i( A; `
  192.   {. A. C: e/ C! J! [8 W9 m
  193.     Timeout--;# h& D, w1 {6 `8 P
  194.   }
    5 C0 S' I2 P. }5 w0 f$ u6 p
  195.   if (Timeout==0)! Q6 o: J1 t; X" _& W3 T
  196.     return false;& U# L+ S% Q; z* Z" v2 p
  197.   $ l) ~% v. Z7 G# M- d
  198.   //EV8
    4 Z- W2 e. ~3 J% X# d+ H
  199.   Timeout = 0x2000;6 A3 n7 ]8 ^9 I( e4 K! Z
  200.   while(!I2C_Event(msgI2C) && Timeout)6 J* d' S2 D! ]: d" h
  201.   {
    ; O3 F* I; c' \
  202.     Timeout--;
    : u# l+ i# l& B( a
  203.   }
    + e( ^$ D% o( j. a
  204.   if (Timeout==0)4 i( m9 K- R$ D- X3 ?
  205.     return false;
    ) U& f5 _* _7 w$ z8 ~
  206.   3 `& J. R: c6 Y8 [  K
  207.   /* While there is data to be written */8 y3 @, N0 w4 q
  208.   while(NumByteToWrite--)  
    + ~  f. Q' }5 t" b' G! h& r$ p
  209.   {
    - a3 @! z4 A6 B0 D7 l) r# I4 Y
  210.     //EV8* r1 Q1 C2 l+ H6 S. G
  211.     Timeout = 0x2000;
    , s+ q; J2 P- c1 F& k7 f
  212.     while(!I2C_Event(msgI2C) && Timeout)" s# ~: _8 ^6 e+ a* w" P
  213.     {
    , J4 _) f' {* p  n8 U; T6 U9 k% G  y
  214.       Timeout--;
    ) Q( n5 \. y. e6 j! Z
  215.     }* K7 r2 e; L$ j  F6 v* S3 W; c
  216.     if (Timeout==0)
    - h% ]: |6 \9 {2 D  G- r" P
  217.       return false;0 n$ V) `0 }7 A
  218.   }
    + N/ M) O+ K6 e: ~7 ~8 W+ {

  219. ' f3 s% Z' H8 E0 F. t
  220.   I2C1->CR1 |= 0x0200;/* Send STOP condition */5 ?8 E' F/ h) O4 M5 h+ n' z9 f  D
  221.   
    7 z( R7 V" c' u* F$ l
  222.   return true;, B# g! t, z6 C
  223. }; r; ?! c" @" V# D) g- s

  224. ; {$ y2 a3 \6 b
  225. void I2C_EE_BufferWrite(u8* pBuffer, u8 WriteAddr, u16 NumByteToWrite)
    ( K6 Q/ W% J- U. e) ?8 [6 k3 Z* a
  226. {7 f! z7 z) F9 e) V, X: A
  227.   u8 NumOfPage = 0, NumOfSingle = 0, Addr = 0, count = 0;
    ( w) k( N! B4 L: A
  228. 3 p6 w2 l6 s& N$ x. z# d# s# _: D
  229.   Addr = WriteAddr % I2C_PageSize;1 U3 G- r& o3 E4 d
  230.   count = I2C_PageSize - Addr;
    / r# y! x5 j+ F' [) g3 F2 S/ G
  231.   NumOfPage =  NumByteToWrite / I2C_PageSize;" u) y0 B9 e9 Z  o+ {) a
  232.   NumOfSingle = NumByteToWrite % I2C_PageSize;# Y5 B# N1 m" l0 Z
  233. ! {) y- w' \0 J/ J% Y1 B
  234.   /* If WriteAddr is I2C_PageSize aligned  */2 b9 S  U/ M( G9 l  b
  235.   if(Addr == 0) ( F; j% W- f" y: h
  236.   {% U  `1 U; k  i2 v
  237.     /* If NumByteToWrite < I2C_PageSize */9 w0 E! w2 {0 t2 _
  238.     if(NumOfPage == 0) ; L# Y4 Z, K  N5 t& s  H
  239.     {' c& {5 [& Y; e. J; o1 L* Q9 V/ P; r* l
  240.       status = I2C_EE_PageWrite(pBuffer, WriteAddr, NumOfSingle);6 R9 M! O+ r/ |
  241.       I2C_EE_WaitEepromStandbyState();
    + A8 u2 G6 [$ \2 U9 o# U0 P' g1 m) e' U
  242.     }
    ! X) ]; x' \- {/ k4 B; r
  243.     /* If NumByteToWrite > I2C_PageSize */8 Q7 a( [; O3 \# I/ R5 Q
  244.     else  
    $ C$ E0 ~' R3 \
  245.     {  h$ q& K) r( F1 K7 j5 r# D
  246.       while(NumOfPage--)
    - L( t8 E" R! k  ?
  247.       {1 b- v5 ~/ h% P' K1 j% Y) C. C
  248.         status = I2C_EE_PageWrite(pBuffer, WriteAddr, I2C_PageSize); ! }8 G$ X  q9 P3 b0 [- v
  249.             I2C_EE_WaitEepromStandbyState();; m8 Z8 ?) {. T3 j5 t" }( V: y' N
  250.         WriteAddr +=  I2C_PageSize;
    0 u1 ]/ v3 W3 I( B& i( }) V7 D
  251.         pBuffer += I2C_PageSize;9 {+ _1 T) \5 K& h6 ~2 I; t
  252.       }
    ) I7 A( q3 X* @- n3 Q' c. e+ _

  253. ! d. m. H6 B- I# M( G$ p
  254.       if(NumOfSingle!=0)" L! Y0 ~. C8 c5 U
  255.       {) M9 n$ A% b& d8 v" ]& H) M
  256.         status = I2C_EE_PageWrite(pBuffer, WriteAddr, NumOfSingle);
    ' y: S8 K$ `3 p6 ~2 P3 g
  257.         I2C_EE_WaitEepromStandbyState();
    $ u4 E: v  Z! ]
  258.       }* }: k4 ?' b4 h$ h5 I4 `
  259.     }' J$ Q- ]! R) D5 Y- V7 T2 \
  260.   }
    ) W# Z6 j' m! {( @! b, @: d5 e* R
  261.   /* If WriteAddr is not I2C_PageSize aligned  */. x# z- G( J% g
  262.   else
    # p5 ]0 @2 v' O* E+ w8 }1 n3 ]3 p
  263.   {$ z3 J9 j4 k7 X7 T0 g. q8 Q
  264.     /* If NumByteToWrite < I2C_PageSize */& ?& u0 m7 F/ D5 O+ l
  265.     if(NumOfPage== 0)
    8 B, |/ e2 L* p& m% m* o6 Y
  266.     {
    + X! E4 Y$ r9 h# B* |
  267.       status = I2C_EE_PageWrite(pBuffer, WriteAddr, NumOfSingle);
    * {# o4 @- ~$ L% A
  268.       I2C_EE_WaitEepromStandbyState();  F- x/ ~3 \; D4 P; }
  269.     }2 }+ `4 \, S2 i# H/ I$ C
  270.     /* If NumByteToWrite > I2C_PageSize */- e6 O6 Q3 z9 ]/ `6 P
  271.     else* u: N. a1 y% }9 t# V
  272.     {
    6 S: i( T  |' {
  273.       NumByteToWrite -= count;+ Z0 ]6 m# z5 M' Y( B+ Q, u: q; {
  274.       NumOfPage =  NumByteToWrite / I2C_PageSize;
    / I4 e0 \$ ?% i2 T9 r8 R
  275.       NumOfSingle = NumByteToWrite % I2C_PageSize;       
    % o9 b% T; r8 Z. E6 `: @* A" }
  276.       
    3 ^8 s; w! U. s) A; l# e
  277.       if(count != 0)
    6 j& j2 c1 k+ G  c" G7 _  E* j
  278.       {  1 a* H7 I  h& z
  279.         status = I2C_EE_PageWrite(pBuffer, WriteAddr, count);
    & z* e5 i' Y& j2 L' l9 D
  280.         I2C_EE_WaitEepromStandbyState();
    ) A) F6 u# H4 ^* b, G- {
  281.         WriteAddr += count;* H/ l; _7 ]4 _' p& t0 b6 v
  282.         pBuffer += count;
    # R& _- T; z1 w3 ^1 B, j* @
  283.       } ( q) S8 y+ @! t3 A9 Y' P
  284.       
    " X7 p& Z  r0 x/ A  m+ @
  285.       while(NumOfPage--), ^- z; b* P6 u  \! d
  286.       {$ d8 ]% d9 u8 A
  287.         status = I2C_EE_PageWrite(pBuffer, WriteAddr, I2C_PageSize);
    ( s' S3 {; d) r# Y( |; s$ W
  288.         I2C_EE_WaitEepromStandbyState();8 q9 ^2 p) h2 f" K
  289.         WriteAddr +=  I2C_PageSize;( g- m- G& P+ f+ L5 z$ d4 e
  290.         pBuffer += I2C_PageSize;  - y4 B, T$ K$ U3 c4 K( {, G+ R
  291.       }1 W  `1 C+ r7 L1 d! X
  292.       if(NumOfSingle != 0)9 `2 o! M" x( a3 k
  293.       {
    - ]* C& r% x( M
  294.         status = I2C_EE_PageWrite(pBuffer, WriteAddr, NumOfSingle); ; `  G3 Q( B# l0 o
  295.         I2C_EE_WaitEepromStandbyState();
    5 u& @  Q( N6 f8 z! T" j
  296.       }/ i8 ?7 I. N: c, O1 ~3 K+ u7 I( O
  297.     }- z- A# w* z2 z0 R! ~
  298.   }    L0 p4 H8 [! i4 u$ r
  299. }6 r; u+ H5 q( q

  300. ) i  ~& |! @9 k5 t* ?
  301. bool I2C_EE_BufferRead(u8* pBuffer, u8 ReadAddr, u16 NumByteToRead)
    / w+ S6 a+ T# _6 v+ z5 L5 F
  302. {& C: T0 c8 t. G6 ?8 [
  303.   u16 Timeout = 0x2000;
    4 i; W  h5 H. G/ f- r/ K
  304.   5 m( U: S. m4 i, S; C
  305.   while((I2C1->SR2 & 0x2) && Timeout)// While the bus is busy
    0 d" b' p1 u- M% H2 n
  306.     Timeout--;7 v# u5 a7 r% G
  307.   if (Timeout==0)
    8 w' B9 p1 |! N* p6 O1 U! {
  308.     return false;4 D  ], l2 ]7 U4 m
  309.   
    + f! B+ Q/ A2 t/ T9 Q+ Q$ u
  310.   msgI2C.Address = EEPROM_ADDRESS & 0xFE;/* Send EEPROM address for write */
    . m3 K& y* Q2 b% y  ^
  311.   msgI2C.Tx = &ReadAddr;/* Send the EEPROM's internal address to write to */
    ' P9 \/ q3 I/ F( Z: J$ t2 }
  312.   msgI2C.Max = 1;* p$ I( _5 p9 l% \
  313.   
    - C; m0 }) x' l9 P5 h+ a' K
  314.   I2C1->CR1 |= 0x0100;// Send START condition! h4 i8 P7 Y5 J: B! h. M* x1 m
  315.   ( |8 @6 H5 s' \7 m+ N, V* _3 ]* J
  316.   //EV5' s/ t4 l! |6 v0 F* i* h
  317.   Timeout = 0x2000;
    ; n8 H% k4 u- g6 b0 J
  318.   while(!I2C_Event(msgI2C) && Timeout): b! N. o* `9 [7 r0 ]- t
  319.   {
    - |6 |* W8 _" i+ ^9 r$ r0 C
  320.     Timeout--;
    # X* h* X/ ~- b# O$ J- F) X
  321.   }
    : K9 l7 z' a5 J' f8 Y; G
  322.   if (Timeout==0)3 P9 u! F* Y$ }+ c2 A4 u
  323.     return false;0 Q. u2 R" r/ j, w6 A

  324. " n7 U1 U( J3 F9 |
  325.   //EV6
    8 j% ]3 G  z/ P! F- V+ }
  326.   Timeout = 0x2000;2 I5 a8 H) _! O5 C; P, u
  327.   while(!I2C_Event(msgI2C) && Timeout)7 _2 w: ]& v: W
  328.   {
    + y, g8 B) P* F. Z+ P9 x, D% z
  329.     Timeout--;$ D2 ^# d* C! @- B& W
  330.   }
    + B: i4 E8 @3 i
  331.   if (Timeout==0)6 d) }( D$ |; L/ o% ?- y- h
  332.     return false;
    ) F! Q2 |+ V- a0 ?, N
  333.   
    : I1 P( V& t3 ^- ~/ D
  334.   I2C_Cmd(I2C1, ENABLE);/* Clear EV6 by setting again the PE bit */1 B: L5 I% l% E
  335. . D2 o% A( [; @" j0 Q
  336.   //EV8; @) K" E5 D* A/ N! n4 s
  337.   Timeout = 0x2000;
    4 r! R9 K8 W' n9 i
  338.   while(!I2C_Event(msgI2C) && Timeout)4 D3 O2 z) X3 u6 f3 j  l
  339.   {
    ! Y" T- \; S% {' b% r# I8 v
  340.     Timeout--;! _8 X; b# [; `" L
  341.   }
    7 \3 C) v3 I$ `5 C8 E* L
  342.   if (Timeout==0)7 Q0 W3 p* Z7 B" a: E# w
  343.     return false;+ P$ r: S  T% p6 X0 P# V
  344.   9 ?4 }& m$ |( G1 a" R. a
  345.   4 g- q) x$ u4 h; c2 V, {$ E
  346.   msgI2C.Address = EEPROM_ADDRESS | 0x01;/* Send EEPROM address for read */
    0 Z/ G9 W: ~3 b5 x
  347.   msgI2C.Tx = pBuffer;
    ) |8 ]4 W  A/ J" y/ q. ^4 u9 Q
  348.   msgI2C.Max = NumByteToRead;
    : w/ Q- h- t: S( a7 H/ k
  349.   I2C1->CR1 |= 0x0100;/* Send STRAT condition a second time */  4 Y% P* ^4 J" e1 L- C* d" a
  350.   
    0 f) i/ R0 N  g# P
  351.   //EV5
    5 ~7 z8 M' M$ D( \$ Y
  352.   Timeout = 0x2000;
    : u* _5 }6 p& T6 k1 P  M
  353.   while(!I2C_Event(msgI2C) && Timeout)
    " L2 }+ E! V# ?
  354.   {4 Z. U5 N" K. ?( b
  355.     Timeout--;6 j4 F, g: t8 e+ k
  356.   }
    6 h, s' G( p$ w* L
  357.   if (Timeout==0)
    + w; M$ O& l  X' W' ^* E  j$ ?
  358.     return false;
    : i. [7 A+ R5 @/ F) ?7 e
  359.   
    # b5 n( V4 s+ V
  360.   //EV6
    : D2 k6 u# _& |, N# Z: t
  361.   Timeout = 0x2000;
    , p' l  T: F2 ~. G. s2 \+ Y
  362.   while(!I2C_Event(msgI2C) && Timeout)  p; a/ V" t4 O, g4 B; z1 G
  363.   {3 \2 A# y- M9 B9 K' @
  364.     Timeout--;4 D" I1 {/ E0 u; ], ^8 R
  365.   }2 a/ ?; I, C1 {; O" h; U
  366.   if (Timeout==0)
    0 w! P9 M  g# s' z
  367.     return false;
    + U: k9 M% h( U
  368.   ) h% `4 M0 I0 k5 A7 e
  369.   /* While there is data to be read */
    * `2 h0 w6 p- w, z" `
  370.   while(NumByteToRead)  " \$ N. _: j8 x5 l
  371.   {
    . _1 z& a7 B4 V8 ]
  372.     //EV7. g! t9 d& s/ p6 J" \
  373.     Timeout = 0x2000;( F" Q5 u, Q0 d' R
  374.     while(!I2C_Event(msgI2C) && Timeout)6 J) B7 c4 Q, Y0 ^) A0 {  M
  375.     {
    ( o( Z" R& Q9 ]2 j6 [% Q+ |
  376.       Timeout--;% x' O4 B; v% s( t4 e
  377.     }- a7 H% C7 k! F3 B2 e  V
  378.     if (Timeout==0); j% z) @( N% a# E5 T. e9 U
  379.       return false;
    # B$ \5 g0 H4 i9 M4 P
  380. , u$ I/ r1 e' m7 B. M
  381.     NumByteToRead--;
    2 i6 R: I* c1 U8 M2 ]
  382.   }
    7 p$ C8 d% B/ `6 B0 `8 p

  383. - H0 {' i) Q% n* C4 O
  384.   /* Enable Acknowledgement to be ready for another reception */
    - I9 R0 q7 w& g* x+ x
  385.   I2C_AcknowledgeConfig(I2C1, ENABLE);7 s5 Q5 a$ v6 ?
  386.   
    4 a0 c9 ^0 k& p& \
  387.   return true;
    $ `4 ^' Z0 b' j4 j5 _
  388. }! ^/ n' o" c- k$ d6 `1 p1 q3 ~
  389. - u& p; Y. p: N, _. t1 Q
  390. ' e) \7 _; b7 {& [
  391. TestStatus Buffercmp(u8* pBuffer1, u8* pBuffer2, u16 BufferLength)
    " D3 b4 m0 H* p5 X3 s0 g' n
  392. {% s( \: \; o, f4 M6 D% {
  393.   while(BufferLength--)
    # Y% R# a& Y$ `
  394.   {
    - t* P, E- ^. f3 F
  395.     if(*pBuffer1 != *pBuffer2)
    : r# K/ x) x$ N1 x1 @4 y9 G
  396.     {# j9 j9 ^# b' {
  397.       return FAILED;
    . e8 {8 L" Y4 ]/ S5 r0 y
  398.     }! S7 Y( e# o0 L9 R$ \  r
  399.     , X% _8 ]5 k1 s- `+ S
  400.     pBuffer1++;
    / k3 @( p( p. o( }( R
  401.     pBuffer2++;
    9 C3 m# [# \) l5 T% S1 @/ e2 \
  402.   }* [6 |# a$ i: m7 `$ m, i

  403. . l+ N6 D% T- X( r" a, D
  404.   return PASSED;  6 f* d9 x7 j; Q
  405. }
    + l* X/ ~3 P. c% g1 K1 Z$ r

  406. + V* [4 ^( n4 D7 g. V
  407. void fmain(void)
    & o" _7 B0 R1 @8 i
  408. {  K1 d$ K/ d/ x2 J/ W9 `9 P
  409.   RCC_HSEConf(9);//72M
    2 \: E/ P% n  ^7 Z
  410. + w: {  a1 d- M  s3 l& O
  411.   RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOB, ENABLE);
    6 Z2 a# z9 q! ^/ U+ {4 G
  412.   RCC_APB1PeriphClockCmd(RCC_APB1Periph_I2C1, ENABLE);
    & W2 y+ {3 b7 Y/ Y
  413.   //复位I2C
    0 T5 Q3 {4 r- e9 y
  414.   RCC_APB2PeriphResetCmd(RCC_APB1Periph_I2C1, ENABLE);
    0 l0 V0 Z2 L7 r6 C# X
  415.   
    2 X8 H- @; G; ]6 u/ t7 Z
  416.   0 c( e3 x9 t8 E# D. v7 N
  417.   /* Initialize the I2C EEPROM driver ----------------------------------------*/
    & Q. z3 [  w4 i
  418.   /* Configure I2C1 pins: SCL and SDA */
    0 \2 y& l: x9 `1 t, F
  419.   GPIO_InitTypeDef  GPIO_InitStructure;
    & V, \& q0 |; _0 K- R+ M- p
  420.   GPIO_InitStructure.GPIO_Pin =  GPIO_Pin_6 | GPIO_Pin_7;( ]2 {$ e5 W2 x: f  h) e# ~! O1 \1 m
  421.   GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
    & |% l9 e6 K5 F7 u6 G2 e
  422.   GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_OD;7 v; W6 C5 U7 m1 t* E. C
  423.   GPIO_Init(GPIOB, &GPIO_InitStructure);
    - J. y+ q' |( O
  424.   /* I2C configuration */
    - _' Y  s. p6 ^) O" h
  425.   I2C_InitTypeDef  I2C_InitStructure;7 _+ e' {$ g. i" ]2 R/ y
  426.   I2C_InitStructure.I2C_Mode = I2C_Mode_I2C;1 |5 w2 e) E8 U
  427.   I2C_InitStructure.I2C_DutyCycle = I2C_DutyCycle_2;7 G3 U- M: N1 ?" Y$ `
  428.   I2C_InitStructure.I2C_OwnAddress1 = I2C1_SLAVE_ADDRESS7;
    4 ^/ C& r/ K, W& _! Y
  429.   I2C_InitStructure.I2C_Ack = I2C_Ack_Enable;0 `+ `- S& x# F7 O2 o" K6 O* n0 g1 T
  430.   I2C_InitStructure.I2C_AcknowledgedAddress = I2C_AcknowledgedAddress_7bit;
    - ?0 F* p7 C# w1 m, Z5 d
  431.   I2C_InitStructure.I2C_ClockSpeed = I2C_Speed;
    . d8 V- [( v9 v& l2 d9 L
  432.   /* I2C Peripheral Enable */. Y8 {9 ^- v4 ?- s+ t1 V2 m' p! Y
  433.   I2C_Cmd(I2C1, ENABLE);
    8 r; L) v0 A5 |4 X6 c
  434.   /* Apply I2C configuration after enabling it -----注意点：先使能后初始化*/# ?. @/ i& E% }5 m' q
  435.   I2C_Init(I2C1, &I2C_InitStructure);
    ; N! l4 k8 c1 R2 y+ O4 P  H
  436. ) v" t# U4 N% {& D
  437. 8 P* J2 z$ Z7 u) T; Y: f# q0 o) E6 u
  438.   /* First write in the memory followed by a read of the written data --------*/4 i; u! V3 Y6 q7 P
  439.   /* Write on I2C EEPROM from EEPROM_WriteAddress1 */+ @. F; J, G- b* A# m$ s
  440.   I2C_EE_BufferWrite(Tx1_Buffer, EEPROM_WriteAddress1, BufferSize1);
    / Q& @! P4 a0 t0 t3 _" v
  441. & A9 k4 v) I4 P0 v+ W9 x
  442.   status = false;1 t: N* {! q3 h( T
  443.   /* Read from I2C EEPROM from EEPROM_ReadAddress1 */- t3 z7 ?5 l+ P* j( L& V
  444.   status = I2C_EE_BufferRead(Rx1_Buffer, EEPROM_ReadAddress1, BufferSize1);
    0 J: q; E4 {* F

  445. " ?( Z9 u7 L- z
  446.   TransferStatus1 = Buffercmp(Tx1_Buffer, Rx1_Buffer, BufferSize1);2 K8 s5 C* x4 T9 B

  447. % |4 w/ C8 A0 f6 g; J6 u
  448.   /* Wait for EEPROM standby state */1 Q8 y- ~3 F5 |5 m
  449.   I2C_EE_WaitEepromStandbyState();( w0 n, r. C) [8 _
  450. " W9 C( Z3 U. k3 l( z( n/ w
  451.   /* Second write in the memory followed by a read of the written data -------*/
    ; ~% h0 r2 S4 D' I9 ?) S
  452.   /* Write on I2C EEPROM from EEPROM_WriteAddress2 */
    8 [  a) s4 J$ F" B: c! U
  453.   I2C_EE_BufferWrite(Tx2_Buffer, EEPROM_WriteAddress2, BufferSize2);
    " }* L% U8 D  J! T& V
  454. 4 M6 q3 E8 s$ J1 J
  455.   /* Read from I2C EEPROM from EEPROM_ReadAddress2 */
    & |# [$ [/ }* K7 ^/ Q
  456.   I2C_EE_BufferRead(Rx2_Buffer, EEPROM_ReadAddress2, BufferSize2);
    5 Y, E. U2 L$ C( c5 v  `

  457. 5 l9 l4 [) k  V! f+ I5 K# h( V* z
  458.   TransferStatus2 = Buffercmp(Tx2_Buffer, Rx2_Buffer, BufferSize2);
    5 I& n+ m4 t4 q0 R$ y7 S) y( e& Z
  459. }  a; R& M) a2 B3 w9 Q4 f

  460. 1 ?  b6 H3 r7 R! ]; w+ C
  461. #endif
    + K( }% C% m$ o6 R5 Q
  462. /******************* (C) COPYRIGHT 2008 STMicroelectronics *****END OF FILE****/
    : Z8 A0 n) X& [: f% `' Y' m
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Dylan疾风闪电 回答时间：2016-1-7 15:14:29
  1. /**! F, p8 I+ p% }$ P
  2.   ******************************************************************************
    , K; m, y. M! |+ p
  3.   * @file /IWDG_Example.h) e! C/ I# d4 Q+ V4 p
  4.   * @author    xd.wu! f! q7 o; a. V* _
  5.   * @version   V1.01 V* o/ I; a* L1 N) B+ P
  6.   * @date     2012-4-18
    & Y2 M4 U4 t) F$ U) }6 J
  7.   * @brief    IWDG：The IWDG timeout is set to 280 ms,Systick Interrupt is 250ms
      K( V  K' r8 p1 u9 c& m3 u
  8.   黄灯闪烁，表示每250ms喂狗一次* x9 {( W6 f1 b8 I
  9.   亮绿灯，表示系统已经由IWDG复位，resumed from IWDG reset
    . U3 N+ ]: `! O
  10.   按下Keyer4 进入EXTI中断，关闭Systick，使IWDG不能喂狗，系统复位
    - D, @, i6 B6 r# H6 C/ z6 f/ C
  11.   ******************************************************************************+ p+ H, q2 w* {+ ^  N( v$ }2 e
  12.   *用途：可用来检测和解决由软件错误引起的故障；当计数器超时时，产生系统复位。9 m0 N$ L9 x, x
  13.   */" X# ?! X+ N0 H( r) B) }
  14.   /*实例应用步骤：
    , G  l0 l0 Q% [: m; ^
  15.   //1."main.cpp"调用fmain()
    3 }4 d; |+ k& E) z" U# d4 g  c' v, h4 g( m
  16.   
    3 G5 q% o/ f' P( J: {: J7 }6 V
  17.   //2."stm32f10x_it.cpp"拷贝
    2 K0 j# D; c4 \* e- f' |& w2 A# @
  18.   #define __IWDG_Example: Q# j0 z" A  b3 n' g
  19.   extern void IWDG_Feed();2 v2 q8 {1 U  i6 Y3 S* W7 \* }
  20.   void SysTick_Handler(void)
    " j! Q) ]1 P9 O% F* c% D# ?3 Y
  21.   {
    * o& Y) \1 x! c: Q6 `* B. n
  22.   #if defined __IWDG_Example
    9 B) B& f2 j' Y) K" W
  23.     IWDG_Feed();3 [( M/ U' b. k9 R
  24.    
    ( U& _' {0 a& p* [5 y& J& C/ n9 W
  25.     GPIO_WriteBit(GPIOF, GPIO_Pin_7, (BitAction)(1 - GPIO_ReadOutputDataBit(GPIOF, GPIO_Pin_7)));0 V: j# T: `" B; q8 d# |) w8 e! ?
  26.   #endif. s/ G" u# C; E; v% z& z
  27.   }
    6 H: n/ h/ A9 Q% K$ r7 R
  28. ; Q' `' j9 D7 i0 I/ d6 _
  29.   void EXTI15_10_IRQHandler(void)( i$ `+ ]5 U- _" v& |# n9 \: {! @" H4 t
  30.   {
    9 w% R3 S# p( W+ q- T" ^, F
  31.     if(EXTI_GetITStatus(EXTI_Line10) != RESET)
    ) N" T0 [' c8 L9 ?$ q: V
  32.     {
    9 o' o9 e% ]" X4 D- [* X! k3 w& L
  33.       #if defined __IWDG_Example
    6 `- j) }, ?7 Y8 `( e' W2 K
  34.         GPIO_ResetBits(GPIOF, GPIO_Pin_7);6 i0 H) ?3 y* Q  s2 ?, }, p
  35.         SysTick->CTRL = 0x00000;//复位,关闭计数器
    9 G1 C+ W( [: V
  36.       #endif$ b( _. v7 [: H
  37.       EXTI_ClearITPendingBit(EXTI_Line10);( B$ u5 j! Q' y9 W
  38.     }! V$ o3 f% {3 z+ P6 k; S
  39.   }& t; }4 ?6 b/ T8 z- \
  40.   
    ' Z6 b  R. t  w! Z7 B
  41.   //3."stm32f10x_it.h"声明
    2 X# r, y; ?( G' t8 D$ A6 R
  42.   void EXTI15_10_IRQHandler(void);
    * I+ j( ^3 e7 A$ ~8 T- G7 v- }
  43. 1 U8 [! T$ M3 ^: X5 J
  44.   //4.Watch中观察8 p8 j) ]5 {8 W* \+ m
  45.   LED# M8 \# k# S. U1 p( u# o
  46.   */! S% j. _$ B+ P. ^

  47. 7 z0 w1 i. N# p+ A/ k9 f/ }( X! M6 {  o
  48. #ifndef __IWDG_EXAMPLE_H% S/ h0 T, y1 e+ Z: J: }/ {
  49. #define __IWDG_EXAMPLE_H
    $ s. b2 E, \( |6 @) U' s% i
  50. /* Includes ------------------------------------------------------------------*/" l- ^( E# Q. f. t- T
  51. #include "std32periph.h"
    7 I$ @' \, i# z( I+ y; y$ r4 H

  52. ! S. `1 O  L) ~2 o" [/ _8 V' _
  53. /* Private typedef -----------------------------------------------------------*/5 M* y# [  U* N- s+ j8 {
  54. /* Private define ------------------------------------------------------------*/" O1 s: f. {- h" u$ L& _& ^4 n
  55.   #define GPIO_LED          GPIOF
    % S1 v" v+ q7 m% V% x9 C& D/ T
  56.   #define RCC_LED           RCC_APB2Periph_GPIOF7 R& K" _8 z" s/ J' L9 C
  57. /* Private macro -------------------------------------------------------------*/
    % N3 r/ v) }2 h; s
  58. /* Private variables ---------------------------------------------------------*/7 y) F! o6 q4 h  M8 {8 J1 J
  59. /* Private functions ---------------------------------------------------------*/
    9 A: L3 s  k$ E

  60. : `) @$ q* T' D* q3 d
  61. void IWDG_Init(u8 prer, u16 rlr)
    8 a  A( i/ e: @! `: \9 p
  62. {$ v8 G1 N- ~% b% Q) A# W! N
  63.   IWDG->KR=0X5555;//使能对IWDG->PR和IWDG->RLR的写
    ) B. O- V  i- b+ s3 Y0 K
  64.   IWDG->PR=prer; //LSI/32=40Khz/4*2^pre0 D  Y. C9 }0 F, |, x# p
  65.   IWDG->RLR=rlr; //从加载寄存器 IWDG->RLR
    6 t0 S+ c3 E4 S; O# C+ i9 v) Q
  66.   IWDG->KR=0XAAAA;//reload; o+ K# w9 y" j2 q! q, e
  67.   IWDG->KR=0XCCCC;//使能看门狗- t/ e# ?# b" ?* L5 F$ p+ F
  68. }$ z7 @  B$ O* C5 p# B) p% p& M7 @
  69. 3 Y; f5 {9 G2 T  r6 d( D- ]
  70. void IWDG_Feed(void)! e) V; i0 Q; |9 \
  71. {- D/ M0 Q# ~/ w% y7 \2 W' h
  72.   IWDG->KR=0XAAAA;//reload
    + T3 Z% U% F9 T/ g
  73. }; y4 l/ D9 M  r" g8 f& `0 m
  74. & G( r1 |  N0 H! J1 n) A) m  L- A
  75. void fmain(void)
    5 K2 v+ N' D' I: s
  76. {- Y9 b, |# H. V, Q$ y
  77.   RCC_HSEConf(9);//72M
    " z, F% m! j/ C) F4 k
  78. / Z2 Z+ m$ U# c/ ^' B
  79.   RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOB | RCC_LED | RCC_APB2Periph_AFIO, ENABLE);
    ; r$ }: k6 ]& L. V/ }
  80. ' W& h. ?/ F- ]* o7 K
  81.   7 _8 h* ^5 k8 i( O
  82.   GPIO_InitTypeDef GPIO_InitStructure;
    ! F9 i: B/ l6 A
  83.   /* Configure GPIO_LED pin 6 and pin 7 as Output push-pull */, ~9 W  w8 @/ d( ~
  84.   GPIO_InitStructure.GPIO_Pin = GPIO_Pin_6 | GPIO_Pin_7;" t3 Z2 d, m9 h# v; L$ Z
  85.   GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP;7 O% p  y4 G: q! Y0 T8 P# T4 c1 I$ V
  86.   GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;, a  i8 f9 Z7 m: F
  87.   GPIO_Init(GPIO_LED, &GPIO_InitStructure);& B0 ^: P7 [$ C
  88.   /* Configure Key Button GPIO Pin as input pull-up (Key Button EXTI Line) */
    3 ~+ W' A6 y2 D, \% _- W, k
  89.   GPIO_InitStructure.GPIO_Pin = GPIO_Pin_10;( d8 [0 e+ F+ ?- E, }  ?
  90.   GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IPU;) l) B* a; R% h% j* X& b$ O, F" h
  91.   GPIO_Init(GPIOB, &GPIO_InitStructure);
    ) X6 i3 ]4 V/ B# t
  92.   # ]  Z9 s& [. l  q! I# S( u
  93.   
    7 s9 \! R# R/ L! ^. v, k, J( C
  94.   /* Check if the system has resumed from IWDG reset */2 H, G3 F- y$ N6 G) V9 D9 H4 Y
  95.   if (RCC_GetFlagStatus(RCC_FLAG_IWDGRST) != RESET): ~5 l. y3 e6 q3 t& \2 M8 H
  96.   {/* IWDGRST flag set */+ o- ^' x' p5 p& `% K: b* O
  97.     /* Set GPIO_LED pin 6 */
    6 o) t9 z; ^, W6 c% K3 U
  98.     GPIO_SetBits(GPIO_LED, GPIO_Pin_6);+ w2 p3 V' d  l! z7 o6 Z
  99. 3 J$ E7 a) ?( i5 w" X8 G! l
  100.     /* Clear reset flags */
    - k) F5 l1 ?' `, u( N
  101.     RCC_ClearFlag();
    & }: e! m* j1 M( f- C
  102.   }5 `) l7 L- Z& a+ j- _; F2 a' ]
  103.   else4 L, R7 z- ~. f" X
  104.   {/* IWDGRST flag is not set */
    4 l, y, M! e* Q$ @3 E/ q3 B
  105.     /* Reset GPIO_LED pin 6 */
    " X$ y& z" u1 u( L# z% b# h# l. ?
  106.     GPIO_ResetBits(GPIO_LED, GPIO_Pin_6);
    + T; e; x* Q  v2 ~& o% [/ {- t) B$ U/ u
  107.   }" f7 E' r( F3 I" k. {% P) p# C
  108. , }3 O" N( \2 n' I) X
  109.   /* Configure Key Button EXTI Line to generate an interrupt on falling edge */; {. q3 i1 g4 |$ e: [
  110.   GPIO_EXTILineConfig(GPIO_PortSourceGPIOB, GPIO_PinSource10);
    $ q4 Q) C- ]# J# Y) a- k9 M8 w
  111.   /* Configure Key Button EXTI Line to generate an interrupt on falling edge */
    , j8 D% n6 V% b) o1 H0 N
  112.   EXTI_InitTypeDef EXTI_InitStructure;
    2 d: p+ a$ M. p
  113.   EXTI_ClearITPendingBit(EXTI_Line10);5 Z6 f3 k, w% W3 V' y) {/ K
  114.   EXTI_InitStructure.EXTI_Line = EXTI_Line10;6 l4 I: h6 M  z+ ?4 v* \
  115.   EXTI_InitStructure.EXTI_Mode = EXTI_Mode_Interrupt;
    3 F4 w5 Y0 ]" d" M
  116.   EXTI_InitStructure.EXTI_Trigger = EXTI_Trigger_Falling;. X0 R  w4 d$ ?0 K. q/ a
  117.   EXTI_InitStructure.EXTI_LineCmd = ENABLE;
    - f/ Z: r1 T2 u. N5 ]
  118.   EXTI_Init(&EXTI_InitStructure);1 t( U% P' \" H& y
  119. 9 ~4 w, G; P. D
  120.   /* NVIC configuration */; G7 z5 \$ a- }$ Y7 b
  121.   NVIC_GroupSet(NVIC_PriorityGroup_0, EXTI15_10_IRQn, 0);
    5 N: p7 m+ @# x
  122.   NVIC_GroupSet(NVIC_PriorityGroup_0, SysTick_IRQn, 1);
    8 W" o2 P! y+ j# I  v

  123. " k6 T7 [! |7 }9 \8 b; @9 o
  124.   /* Configure SysTick to generate an interrupt each 250ms */
    9 w' o7 ?" U: d0 R  J, G4 J( I
  125.   SysTick->LOAD = 250000*9;
    5 h2 r' g+ _+ ~4 Q4 B/ @# K5 b
  126.   SysTick->VAL = 0x00;//清空计数器" I4 o; x* t6 d2 N' b2 P! R0 H
  127.   /* ---------------------------------------------------------------------- M$ E1 x! Z5 I+ R6 r& W& ?
  128.   SysTick 控制与状态寄存器的位
    ' `3 r/ u+ T4 t# e0 |1 i3 a
  129.   SysTick->CTRL: CountFlag【16】,CLKSource【2】,TickINT【1】,ENABLE【0】/ ]8 n& I* E9 Z+ W$ }: d
  130.   --------------------------------------------------------------------- */
    0 M( y. U! d! l9 [2 ~  e. y! i: m9 a
  131.   //CLKSource【2】=0  使用外部时钟源HCLK(1:内核时钟HCLK/8)% C3 }% O" t4 b; [0 |( n1 G/ J
  132.   //  TickINT【1】=0  向下计数至0，不会挂起Systick(1:至0会挂起Systick)+ f4 ~8 n! d, {: \, u! ?8 f
  133.   //   ENABLE【0】=0  禁止计数器（1:使能，至0将CountFlag置1）# M- Z. M8 n5 y" L
  134.   SysTick->CTRL = 0x00003;6 a" U* [; Y( o
  135. 2 D% e& F% i' y' U6 A1 J7 }- z
  136.   2 b; j& C  n. r. G
  137.   /* IWDG timeout equal to 280 ms (40KHz/32=1.25KHz T=[349+1]/1.25=280ms) */5 ^' T1 n7 C8 r' B
  138.   IWDG_Init(0x3, 349);7 t) N$ B7 P4 ^
  139. }
    % E# L, `( T2 l5 e- ~4 F% v
  140. 4 \7 e% Q8 G3 I7 F9 _$ u! r: b% {
  141. #endif  d, K# @. X, p# h5 q
  142. /******************* (C) COPYRIGHT 2008 STMicroelectronics *****END OF FILE****/
    + w! y, R' x$ ?& F- S. w7 }
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Dylan疾风闪电 回答时间：2016-1-7 15:14:43
  1. /**
    / w1 ]4 z4 N; o
  2.   ******************************************************************************
    + D; @9 x, U+ J  G
  3.   * @file /NVIC_CM3LPModes.h
    2 h) F# t2 Y9 n2 v
  4.   * @author    xd.wu
    , x: y3 n. r/ v' B6 |! w0 l$ V
  5.   * @version   V1.0) A+ ]8 C) m: O5 f
  6.   * @date     2012-4-19# d& \. @, u& t8 ^
  7.   * @brief    NVIC：低功耗& m9 u6 w6 o  }$ J
  8.   WFE事件  新来的中断、之前悬起的中断等(比较容易唤醒)
      X+ {) d9 J4 ]
  9.   WFI中断  
    : j2 x: }$ c2 n! T1 H2 I' k0 Y
  10.   ******************************************************************************
    ) J' K) Z3 m" H4 h" x
  11.   *用途：% l! C) V3 w# k4 v5 s' H' c
  12.   1.睡眠模式
    ) d' y7 w' z1 f/ v
  13.     进入：1 g: ?1 r6 `. U' U6 ^; y
  14.       SLEEP-NOW模式：立即进入睡眠模式/ W& d" f+ h2 J. ]2 o
  15.         SLEEPDEEP = 0 , SLEEPONEXIT = 0* s" ^+ H4 u9 F' z
  16.       SLEEP-ON-EXIT模式：从*****最低优先级*****的中断中退出时，进入睡眠模式(没有成功)
    . o- X: I8 r, y
  17.         SLEEPDEEP = 0 , SLEEPONEXIT = 1
    + m) C/ P5 L2 l, ~- g* W8 w$ J( s
  18.       然后执行WFI(等待中断)或WFE(等待事件)指令5 ~" L9 `) C1 D% W: Z: ~4 k
  19.     唤醒：WFI(任意中断可唤醒)或WFE(唤醒事件)  C3 m; `* C  E& p
  20.     唤醒延时：无$ |  b5 ^) h! Y7 g% c
  21. + r. d4 U" O% c4 P
  22.   2.停机模式2 I; \8 Y) W- q
  23.     进入：
    7 D% o; I$ e; }+ [
  24.       设置CM3中的SLEEPDEEP位 , PWR_CR中清除PDDS位 , 设置LPDS位
    * H/ S' R) @& s
  25.       然后执行WFI(等待中断)或WFE(等待事件)指令9 X9 b/ z7 n# V4 Q2 Q
  26.     唤醒：任意外部中断可唤醒  x8 }: X8 Z7 N1 R# S
  27.     唤醒延时：HSI RC唤醒时间 + 电压调节器从低功耗唤醒的时间3 M! o! j! n! e0 X1 @
  28. # e5 _9 M' t' |. W/ c' A6 b
  29.   3.待机模式：可实现系统的最低功耗
    ! u" s5 G4 w% P2 s7 s
  30.     进入：, f& Y2 q& X! i  k/ Q" j$ b
  31.       设置CM3系中的SLEEPDEEP位 , PWR_CR中设置PDDS位 , CWUF位* X( V+ k# l0 T- R
  32.       然后执行WFI(等待中断)或WFE(等待事件)指令* q2 W( v+ f/ \' |  F3 j
  33.     唤醒：WKUP引脚的上升沿、RTC闹钟事件、NRST引脚上的外部复位、IWDG复位9 Q2 q; n9 f5 k/ }& h0 P2 x$ _
  34.     唤醒延时：复位阶段时电压调节器的启动
    / ^. J5 M& O4 D. c8 O0 n
  35. 6 ?$ y- Z8 `3 u/ ]  L4 j; l
  36.   SCB->SCR[4:0] == SEVONPEND,0,SLEEPDEEP,SLEEPONEXIT,0
    4 |9 U3 y  S! n0 H' ~
  37.   */
    / ~; |9 _: w: K* Y) l  i9 W
  38.   /*实例应用步骤：. E: c5 x& j# m9 X1 X
  39.   //1."main.cpp"调用fmain()
    3 y4 }/ l. e6 m3 v
  40.   
    & _9 A5 Z: k1 z  }7 l
  41.   //2."stm32f10x_it.cpp"拷贝
    4 f8 q' ?! S6 {; i
  42.   //#define __NVIC_CM3LPModes
    , g* \* Y$ l; I3 F9 h
  43.   #if defined __NVIC_CM3LPModes. h9 e1 o% z# M( s; E- p0 I3 ^
  44.     extern u8 LowPowerMode;7 D& c, o' Y$ \0 }1 W3 K
  45.   #endif6 M7 }% N8 M$ h* h3 n
  46.   void EXTI15_10_IRQHandler(void): R. v1 }5 Z5 {" s* I
  47.   {
    2 \6 _6 |% C0 B7 [) r) W! j
  48.     if(EXTI_GetITStatus(EXTI_Line11) != RESET)# i% n. K( p/ N+ w; w# O9 u( I+ M
  49.     {
    * T' I+ w5 c$ j$ }
  50.       #if defined __NVIC_CM3LPModes  x% G- s4 o+ p" ]& x; t* p
  51.         LowPowerMode = 1;3 z% M' ~; Z! _+ W
  52.       #endif
    ) b3 h' N. x9 I# S4 u4 t2 ^
  53.       EXTI_ClearITPendingBit(EXTI_Line11);+ d) s' J2 Z3 C: b
  54.     }/ j. z. R4 Z. Z
  55.   }7 g" }* {; ?( [1 w) W
  56.   void EXTI0_IRQHandler(void)
    0 [2 i# L" f; W( W
  57.   {
    5 V2 A+ c7 B0 V, J( F% Y7 v7 O" M# Z9 N
  58.     #if defined __NVIC_CM3LPModes5 w% K8 M0 }1 T5 A1 l
  59.       GPIO_WriteBit(GPIOF, GPIO_Pin_8, (BitAction)(1 - GPIO_ReadOutputDataBit(GPIOF, GPIO_Pin_8)));
    , C3 Z& @: P4 {' ]1 e4 b4 F
  60.     #endif
    , a/ M+ [# m6 R1 G' O- u
  61.     EXTI_ClearITPendingBit(EXTI_Line0);! ~) J& |6 ?3 p6 x. V( v1 F  [& s
  62.   }
    6 ?) @  @; X8 T
  63.   * v: j- a" t( E( g
  64.   //3."stm32f10x_it.h"声明! r) G) f) ?1 y1 K4 `
  65.   void EXTI15_10_IRQHandler(void);
    : ]1 _+ R% ~* r3 p7 y2 S. y! c
  66.   void EXTI0_IRQHandler(void);
      e: s0 R0 [' _% y- b# M. K) g
  67.     t8 S; G+ h$ [+ }# S7 s/ P. b8 V  ?
  68.   //4.Watch中观察
    - }, ~5 |- o2 W/ m) x
  69.   无动作------蓝灯闪烁    主程序正常运行中  V# W9 U3 g) V1 A$ I
  70.   SleepNow,SleepOnExti,
    & x$ R' ?! {$ D' i# m+ i/ C" K. S
  71.   按下Sel-----绿灯翻转    进入指定模式3 R  |2 ^( }5 `# V9 k- ?) V& a
  72.   按下Key1----红灯翻转    唤醒
    6 o1 ?, }/ w  f5 P6 r" Q; U# W& d
  73.   Stopping,7 V2 I6 J  G- F( w7 E0 K+ ^; T" j- T
  74.   按下Sel-----绿灯翻转    进入指定模式
    $ P8 H, j6 f1 Z' D: f
  75.   按下Key1----红灯翻转    唤醒，时钟变慢(开启或处于低功耗模式(PWR_CR)的设定)2 L7 d5 S2 y9 ^2 H) S3 f1 H3 n
  76.   Standby3 o- ~! _. m) `
  77.   按下Sel-----灯全灭      进入指定模式$ c/ t( {5 R1 _& r1 V
  78.   按下Key1----红灯翻转    唤醒
    $ f& A7 a( n6 \* |" {
  79.   */
    5 c; L$ f; m/ R: [: V

  80.   Q! x0 e" ]5 B
  81. #ifndef __NVIC_CM3LPMODES_H8 Q8 v" Q% Q; p! J" [. u2 F  y
  82. #define __NVIC_CM3LPMODES_H* c4 G- x" t1 _) `0 g
  83. /* Includes ------------------------------------------------------------------*/
    9 V1 R3 z2 s8 p$ f2 w
  84. #include "std32periph.h"
    $ Q6 s4 P% V" o% v; d% M
  85. * Z0 L. N* E9 T  `5 c8 W
  86. /* Private typedef -----------------------------------------------------------*/- t+ n0 G: V0 d: L! T7 }, z
  87. typedef enum
    ' k: X+ y! o6 D$ @
  88. {
    9 l- D9 A7 D2 B4 b
  89.   Normal = 0,
    - Q0 z- K# f: M2 C( U. Y1 }9 j
  90.   SleepNow = 1,- K/ x% G; P, S/ F+ j" |
  91.   SleepOnExti = 2,
    ) _+ `/ X' e" t) F5 W7 w# n
  92.   Stopping = 3,5 \3 Y) W  n2 b4 w6 {3 T- W
  93.   Standby = 4" H7 S0 @& K& ^: D# B2 D
  94. }RunMode;
    + ~( @) j# Q0 D" Q5 T
  95. /* Private define ------------------------------------------------------------*/
    0 X! h. w: L% ~6 j; S
  96.   #define GPIO_LED      GPIOF   
    5 D- A1 S. y( c3 t0 Y/ S+ D+ s
  97.   #define RCC_LED       RCC_APB2Periph_GPIOF& f! c4 ~$ ^! Q; W, }) h" ~
  98.   #define RCC_EXTI      RCC_APB2Periph_GPIOB
    " C. r/ ?6 g* p' K2 B7 T
  99. /* Private macro -------------------------------------------------------------*/
    , H( w& ~3 h+ e4 x3 R1 V
  100. /* Private variables ---------------------------------------------------------*/
    * t# n! |, r2 I# j6 A! T
  101. EXTI_InitTypeDef EXTI_InitStructure;1 \. B5 |) b! N
  102. RunMode rm;
    $ z. o2 g) u% D. v& d, T0 g
  103. u8 LowPowerMode;
    9 p) L3 A; [2 f: P& _! @$ V! z
  104. /* Private functions ---------------------------------------------------------*/
    4 B- `: Y  y  U( H$ ?. k9 F5 X

  105. 6 c' B5 n- p5 x6 `' ]) F
  106. void Delay(vu32 nCount)
    5 o& x5 \! z: t! ^3 {
  107. {
    ' P/ A1 D% a3 W  x% k% A* B, Y
  108.   for(; nCount != 0; nCount--);
    0 G" }2 `$ K2 M  S& ]: Y5 N
  109. }
    * A0 ?& r- R0 z2 u
  110. & J& q0 c( ]% \( b1 v4 [8 a
  111. void fmain(void)
    4 ?3 `+ Z/ w1 v; G4 K! I
  112. {
    ; a- c3 L7 p: F; S
  113.   RCC_HSEConf(9);//72M
    + M$ ^$ {) _; ]' r3 o  P1 r# C
  114.   
    % I& j# e+ z4 G, r& r1 n
  115.   RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA | RCC_LED | RCC_EXTI | RCC_APB2Periph_AFIO, ENABLE);
    5 Y5 C; P  G* _. [. d

  116.   h: H% c$ V" A0 D1 f3 B+ e
  117.   //GPIO_LED# ~! o! a$ E0 p3 x% v; l; ?
  118.   GPIO_InitTypeDef GPIO_InitStructure;3 T) T- ]2 `+ Q- n9 y
  119.   GPIO_InitStructure.GPIO_Pin = GPIO_Pin_6 | GPIO_Pin_8 | GPIO_Pin_9;
    ' g; @5 g" @% A3 i
  120.   GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;" `- |1 A# u0 Z
  121.   GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP;
    5 C! L( _, D5 ~
  122.   GPIO_Init(GPIO_LED, &GPIO_InitStructure);1 v( \1 ~/ Q6 f5 a$ j! T1 ^% o, J
  123.   //GPIO_WakeUp
    3 g4 T: Q5 g( V2 _
  124.   GPIO_InitStructure.GPIO_Pin = GPIO_Pin_0;, {5 E- {! f: w5 Z: L4 W
  125.   GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING;
    3 n0 y, {1 B4 U( P' ]
  126.   GPIO_Init(GPIOA, &GPIO_InitStructure);
    3 a: L6 Q8 \: }; k4 E/ Q( ?0 ]
  127.   //GPIO_EXTI
    2 w+ b" [" M! v; ]8 t! ~. K+ b
  128.   GPIO_InitStructure.GPIO_Pin = GPIO_Pin_11;
    / F, ~* |: s0 B
  129.   GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING;( g4 u. r/ f% {+ N9 E  H9 b
  130.   GPIO_Init(GPIOB, &GPIO_InitStructure);- v  ?1 X3 \) Z: q8 N" W! f  ~

  131. * g5 d8 z; p$ W+ j7 N. U3 }# P
  132.   // Connect EXTI Line0 to PA.006 t$ c& e- G9 X+ v' T; D
  133.   GPIO_EXTILineConfig(GPIO_PortSourceGPIOA, GPIO_PinSource0);
    6 f: V& M1 ?% v% q# V2 m6 z
  134.   EXTI_InitStructure.EXTI_Line = EXTI_Line0;9 O2 V* e( n9 G; L" }. B- F9 ^8 ~
  135.   EXTI_InitStructure.EXTI_Mode = EXTI_Mode_Interrupt;) R$ b( f' N9 [( i+ a3 [+ a
  136.   EXTI_InitStructure.EXTI_Trigger = EXTI_Trigger_Falling;
    / }9 @5 i& W& Y% Z! {, m& v
  137.   EXTI_InitStructure.EXTI_LineCmd = ENABLE;6 g; l' S. L# b+ q( ~) _0 S( X  g
  138.   EXTI_Init(&EXTI_InitStructure);
    1 u& \0 h7 K3 ], m; J
  139.   // Connect EXTI Line11 to PB.111 v# g' R0 ?+ Z" q* R3 T
  140.   GPIO_EXTILineConfig(GPIO_PortSourceGPIOB, GPIO_PinSource11);  
    2 m% ^- q% N6 w) i* X0 v
  141.   EXTI_InitStructure.EXTI_Line = EXTI_Line11;
    + J, k  _9 P- D( @8 T0 J5 D, u0 {. x
  142.   EXTI_Init(&EXTI_InitStructure);, `; j# _: W9 H* X
  143.   ! z  U) b3 I1 f; N; n* [& V2 |, u
  144.   NVIC_GroupSet(NVIC_PriorityGroup_0, EXTI15_10_IRQn, 1);
    + s0 b* ]) e+ d
  145.   NVIC_GroupSet(NVIC_PriorityGroup_0, EXTI0_IRQn, 0);- t0 t. v5 E/ }, S
  146.   * K3 B% K+ d4 C& V7 n  e" D
  147.   GPIO_ResetBits(GPIO_LED, GPIO_Pin_6);6 u+ J+ e/ v. y6 ~, l( X; r
  148.   rm = SleepNow;//Normal, SleepNow, SleepOnExti(没有成功), Stopping, Standby# H( j2 t6 v, [7 ], `  k0 t
  149.   while (1)8 E! t' w" B% B) B1 Y. M- p) _9 }8 n
  150.   {2 j% J; K% K0 y& |: s, [; D# h" l
  151.     if(LowPowerMode == 1). A3 G* r4 t' w7 p0 k% k
  152.     {
    2 A5 t/ T, z8 h4 G
  153.       LowPowerMode = 0;& t- I& _5 J  x0 q
  154.       GPIO_WriteBit(GPIO_LED, GPIO_Pin_6, (BitAction)(1 - GPIO_ReadOutputDataBit(GPIO_LED, GPIO_Pin_6)));
    7 n( w8 M" t0 B- _# J, o5 [; h
  155.       & N0 P4 k8 |) a: L; g  b2 x
  156.       //SCB->SCR[4:0] == SEVONPEND,0,SLEEPDEEP,SLEEPONEXIT,01 g* g& K" N3 Y" b8 _
  157.       switch(rm)) J; }/ J5 n( e# }: r9 D0 c
  158.       {% d% C0 D0 \3 ~, e
  159.       case SleepNow:
    8 w5 R8 `& E# w0 `7 y6 \# R' c3 p
  160.         SCB->SCR &= 0xFFFFFFF0;//SLEEPDEEP = 0 , SLEEPONEXIT = 0
    $ U, a: B  Q5 h% F! m$ T; f
  161.         __WFE();& {8 \3 p, t+ g- u
  162.         break;0 R8 g5 ^" @$ Q) [- {% i/ k9 L
  163.       case SleepOnExti:
    , _0 e3 f. E/ W5 G
  164.         SCB->SCR &= 0xFFFFFFF2;//SLEEPDEEP = 0 , SLEEPONEXIT = 1
    : Y  [' J, |' ]2 L
  165.         SCB->SCR |= 0x00000002;- Y7 u! D4 @6 u, Z
  166.         __WFE();
    " {5 G# K3 \$ x" z& z3 b% y- R
  167.         break;' B" U$ x8 Y6 c& W4 B2 z( }
  168.       case Stopping:
    : C( T; e1 Z! k. E" i: y+ x
  169.         RCC->APB1ENR |= 0x10000000;//PWREN：电源接口时钟使能
    2 f- k9 Z  C. m2 `
  170.         SCB->SCR |= 0x00000004;//SLEEPDEEP = 11 k' ^! a- Y' g
  171.         PWR->CR &= 0x1FD;//PWR_CR中清除PDDS位 , 设置LPDS位! B2 }( u% @5 A$ p
  172.         PWR->CR |= 0x001;* P, z, v0 Y9 }/ ]% P- a* ~# O: G
  173.         __WFE();
    ) o; F5 H1 Q" l) l1 H% r
  174.         break;6 g3 @. c( H! c$ p
  175.       case Standby:
    & B2 D9 v0 I0 A7 U
  176.         RCC->APB1ENR |= 0x10000000;//PWREN：电源接口时钟使能
    7 R( l' J3 c/ J4 H4 p5 [; u4 j+ {
  177.         PWR->CSR |= 0x100;//PWR_CSR中设置EWUP位(WakeUp引脚PA0)
    ( {2 ]; ]4 W6 Q' K
  178.         SCB->SCR |= 0x00000004;//SLEEPDEEP = 1
    4 \; b5 I' m; u& `- U! m
  179.         PWR->CR |= 0x006;//PWR_CR中设置PDDS位 , CWUF位
    # ~: |" O3 o9 s
  180.         __WFE();
    ; U$ a; Q& T3 L9 A
  181.         break;
    5 j6 n* C9 I* ]6 K+ q. l
  182.       default:
    + W% }3 i/ |& W/ i' |- t
  183.         break;8 u6 `, M: b1 c- C( j
  184.       }
    ! E4 T  w" K  w9 B( c: }' f
  185.     }
    ! l6 K2 r; F) {  S) L' m3 \

  186. 3 c+ _6 L9 ?$ Q% \6 k4 P, y5 [, O
  187.     Delay(0xFFFFF);" Q! D( i* `3 i* U
  188.     GPIO_WriteBit(GPIO_LED, GPIO_Pin_9, (BitAction)(1 - GPIO_ReadOutputDataBit(GPIO_LED, GPIO_Pin_9)));* f) _6 x1 i6 l
  189.   }
    2 v/ u& E. ^1 W# K: L0 t" m! K+ X5 ]
  190. }3 q. y. t, b' l* K3 O

  191. - \9 j" z5 ^9 s7 k
  192. #endif* x4 @4 m3 l$ P8 H) c
  193. /******************* (C) COPYRIGHT 2008 STMicroelectronics *****END OF FILE****/% [- o- ~8 n' U+ Q
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Dylan疾风闪电 回答时间：2016-1-7 15:19:03
  1. /**
    . A7 R# ~% m/ Z
  2.   ******************************************************************************* \! w" b" X2 ~. G. G9 d" h
  3.   * @file /PWR_STANDBY.h
    3 o) A* R; t0 B% o1 z
  4.   * @author    xd.wu9 e6 Q1 z1 q$ O0 L8 t9 \' x
  5.   * @version   V1.0
    ' L% [* C: O: O
  6.   * @date     2012-4-19
    1 z, H/ Z. |- A4 x1 a/ W
  7.   * @brief    PWR：待机模式
    1 h' j4 r  O% }0 m/ K
  8.   WFE事件  新来的中断、之前悬起的中断等(比较容易唤醒). v; w% c* \  t+ J
  9.   WFI中断  
    - Z- _# I! c6 c. V# \; J7 D1 S
  10.   ******************************************************************************
    - V5 ?; H9 M) }6 o' m4 |2 L
  11.   *用途：/ t( F+ t  K" s; u/ D3 g
  12.   3.待机模式：可实现系统的最低功耗; n6 n& A2 L9 }4 W% [/ n
  13.     进入：
    2 z' r: T2 M2 z+ ~/ D/ U
  14.       设置CM3系中的SLEEPDEEP位 , PWR_CR中设置PDDS位 , CWUF位- g+ U9 r& M' \
  15.       然后执行WFI(等待中断)或WFE(等待事件)指令3 @9 k# I& c  S) t
  16.     唤醒：WKUP引脚的上升沿、RTC闹钟事件、NRST引脚上的外部复位、IWDG复位' B5 d: n4 i. M7 M$ x3 m
  17.     唤醒延时：复位阶段时电压调节器的启动
      G  S9 f' |7 }6 S) W
  18. . e; v1 S: q1 y5 R4 {
  19.   SCB->SCR[4:0] == SEVONPEND,0,SLEEPDEEP,SLEEPONEXIT,08 m' _9 U- n. Z' c
  20.   */
    + b. c1 e2 d4 B5 r
  21.   /*实例应用步骤：
    : ~; t# I4 O( A# K# `9 c, H
  22.   //1."main.cpp"调用fmain()4 ]: L/ q- G+ ?, j1 f' f
  23.   ' N, P- ]1 w% K0 d6 x# g7 w$ e5 h
  24.   //2."stm32f10x_it.cpp"拷贝
    $ H) }4 M* K  k) G" @& I) a0 T3 C
  25.   void SysTick_Handler(void); Y3 E" y) w( x1 a5 f
  26.   {$ R) q# `7 I9 ]9 a
  27.     #if defined __PWR_STANDBY! h+ q4 v0 X+ N
  28.       GPIO_WriteBit(GPIOF, GPIO_Pin_6, (BitAction)(1 - GPIO_ReadOutputDataBit(GPIOF, GPIO_Pin_6)));
    1 N- D6 \" I. i9 R3 j* j" Y/ j0 w0 ~
  29.     #endif" u6 V/ _. I: K; t. j2 \8 u$ q
  30.   }
      l/ v7 r; A0 L" b8 E/ M6 R- F/ N$ g
  31.   void EXTI15_10_IRQHandler(void)  a: G& }! x- P' B( D
  32.   {+ h4 E# w' [. u6 y, K
  33.     if(EXTI_GetITStatus(EXTI_Line11) != RESET)' {9 p7 U1 O1 a+ T, D6 y
  34.     {$ S9 S( z. m, Y
  35.       #if defined __PWR_STANDBY/ L/ T* |; B: E# m/ P) k2 a
  36.         GPIO_SetBits(GPIOF, GPIO_Pin_6);
    4 o2 G, p& t3 J+ L! [4 Q) P, u4 V& }8 w
  37.         RTC_ClearFlag(RTC_FLAG_SEC);
    4 ~, q) `7 h* \0 @0 u) R% n
  38.         while(RTC_GetFlagStatus(RTC_FLAG_SEC) == RESET);// Wait till RTC Second event occurs9 {, u# a" g6 A, v
  39.         RTC_SetAlarm(RTC_GetCounter()+ 3);// Set the RTC Alarm after 3s
    2 `/ w0 R1 }2 l( q; f
  40.         RTC_WaitForLastTask();
    / U; X4 s' A( I* B- {) M
  41.         //PWR_EnterSTANDBYMode();) v  q( w: ~3 K: i0 s3 |
  42.         SCB->SCR |= 0x00000004;//SLEEPDEEP = 1$ L7 r; z& A- @2 l1 s
  43.         PWR->CR |= 0x006;//PWR_CR中设置PDDS位 , CWUF位3 ?( E- k) P  @' ^- I# n
  44.         __WFE();/ h% Z8 h6 j) t# e8 c) h1 F3 j# |8 v
  45.       #endif' ~% q2 A3 Q& M4 d( o
  46.       EXTI_ClearITPendingBit(EXTI_Line11);+ Z% o' a0 J+ R
  47.     }) x2 a+ j  t4 ~4 J  n  p
  48.   }
    , b( o% q' R$ X8 F+ L# @) _; L
  49.   # w2 r, v5 S1 R' x5 L1 M
  50.   //3."stm32f10x_it.h"声明
    1 G2 A/ K8 w4 c9 e/ ]+ [
  51.   #define __PWR_STANDBY6 o3 r  L6 @9 ~% `. k% c3 V9 T8 i$ x" }2 N
  52.   void EXTI15_10_IRQHandler(void);' \3 F- O3 V3 j3 k
  53.   void SysTick_Handler(void);! H4 x  h( r; I) W4 f6 n
  54.   
    1 J7 S8 |, K& U  [. L
  55.   //4.Watch中观察
    - f) N0 q: ]% m0 l; J9 o
  56.   LED绿灯闪烁0 Q3 [+ {8 f6 r2 q6 k! \
  57.   按下Sel后进入待机模式，3s后RTC闹钟唤醒，黄灯点亮
    " ^2 J. H5 ~( j3 G
  58.   */
    2 V6 A( w2 A5 h4 c  K& c: ^

  59. ! a: M# Z% y. g7 Q1 K
  60. #ifndef __PWR_STANDBY_H7 a1 j8 ~  S2 y( ]: w: W- x
  61. #define __PWR_STANDBY_H
    - e! @: J. h8 r7 K5 m
  62. /* Includes ------------------------------------------------------------------*/* v* A3 j& V7 Q; s$ Z9 L
  63. #include "std32periph.h"6 M7 o. K! I) |$ n

  64. 9 F) h5 Y5 ]1 w
  65. /* Private typedef -----------------------------------------------------------*/" }4 ?* ]; C# @9 b, T. U' s+ W
  66. /* Private define ------------------------------------------------------------*/
    . h7 N/ [2 E' v3 ?
  67.   #define GPIO_LED      GPIOF    & T% [: Q: r" c: k4 F1 W& E
  68.   #define RCC_LED       RCC_APB2Periph_GPIOF
    - E1 P4 V: b( l; U
  69.   #define RCC_EXTI      RCC_APB2Periph_GPIOB" u- e: a9 @7 Y& S
  70. /* Private macro -------------------------------------------------------------*/, x7 z: e' o2 \2 k( m, W9 E7 G1 j+ L0 a
  71. /* Private variables ---------------------------------------------------------*/
    / L& _$ T0 t0 Y  A; X" o
  72. /* Private functions ---------------------------------------------------------*/
    7 n9 m4 Q- t* {
  73. ( `8 ~/ ~3 d1 M% o5 u
  74. void RTC_Configuration(void)
    . E) _- g: D3 n' N+ o% m
  75. {
    ! R# {+ {% t: W) @+ Q7 e
  76.   if(PWR_GetFlagStatus(PWR_FLAG_SB) != RESET)/* System resumed from STANDBY mode */
    & z$ V6 |1 K% `% I" U
  77.   {
    - g5 {3 g/ r7 g9 G) k4 m, I
  78.    
    3 E- v! r* q3 D* f; f- L. X% j
  79.     GPIO_SetBits(GPIO_LED, GPIO_Pin_7); * [* @, O5 Y( I
  80. ) x- i; Q# J# j2 u
  81.     /* Clear StandBy flag */
    ; R, L" b. h2 g* A/ g
  82.     PWR_ClearFlag(PWR_FLAG_SB);" b4 o  I! W& E

  83. - o! N! p- X0 b# q
  84.     RTC_WaitForSynchro();, f% {- O5 m: F0 ~+ T
  85.   }
    % ~, K/ D& X7 ~5 K0 C. g6 E0 }
  86.   else
    " v* u1 F3 h0 Y3 m. @) i4 L
  87.   {/ {' x+ x. D4 N
  88.     /* StandBy flag is not set */* ^! z! y  _5 b
  89.     /* RTC clock source configuration ----------------------------------------*/' K" i) A+ d2 b8 p, B
  90.     BKP_DeInit();
    8 U- v1 S- t1 y* B- o/ R# T; J
  91.   ) _" E  k* T% P$ T0 Y
  92.     RCC_LSEConfig(RCC_LSE_ON);( l% ], N5 ^9 C! N% \6 h3 @0 K
  93.     while(RCC_GetFlagStatus(RCC_FLAG_LSERDY) == RESET)
    0 I# p. _6 d1 b* K5 w
  94.     {
    & q7 p5 M. W- r  d
  95.     }
    * Z* z! S/ E7 V. H5 C! C

  96. ) E* p" E* j  a1 S! i6 Z5 g% a
  97.     RCC_RTCCLKConfig(RCC_RTCCLKSource_LSE);
    3 _1 m6 p+ b' R: Y+ Z. z
  98.     RCC_RTCCLKCmd(ENABLE);8 {! U9 f. S- U% P6 c+ N5 s
  99. ; M3 q" ?) ?$ l6 C
  100.     /* RTC configuration -----------------------------------------------------*/
    / n% T) ]; s8 g5 c5 j
  101.     RTC_WaitForSynchro();
    ( {3 N4 u- ^* L
  102.     /* Set the RTC time base to 1s */: z0 l. t' G5 c% D% W
  103.     RTC_SetPrescaler(32767);  
    6 |6 O( g2 |$ s, O& [
  104.     RTC_WaitForLastTask();
    6 E* p2 q& U! E6 f& d+ L$ B1 Z
  105.   }
    1 p% f0 c8 p8 ]0 x% Q
  106. }" T2 m! j: Q% [  E
  107. ! H  p: b6 D$ ]
  108. void fmain(void)% G! w! `" |) h  h" X6 v
  109. {
    ( T- \8 z/ {* J! b: Z! {$ Y, _* V
  110.   RCC_HSEConf(9);//72M
    # E3 S9 y% d7 ?  g7 ]9 G2 y
  111.   - |( u( Z$ I. \3 d0 V  W
  112.   RCC_APB2PeriphClockCmd(RCC_EXTI | RCC_LED | RCC_APB2Periph_AFIO, ENABLE);: l6 I! g3 G  _" k! B. i- N
  113.   
    & f9 L3 B+ J3 ?5 m2 Y1 n* |
  114.   GPIO_InitTypeDef GPIO_InitStructure;
    7 z6 p. c, K. A
  115.   GPIO_InitStructure.GPIO_Pin = GPIO_Pin_6 | GPIO_Pin_7;/ s- h! m  o/ T
  116.   GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;9 I) D, T8 U/ I$ J- ^
  117.   GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP;- W! f, `) f, I, _& C# v7 M" V$ T
  118.   GPIO_Init(GPIO_LED, &GPIO_InitStructure);8 u6 T) C/ G- p, j

  119. , a# q: E+ b! W1 s' M
  120.   GPIO_InitStructure.GPIO_Pin = GPIO_Pin_11;
    $ y. f) b- T4 p7 n1 A# z
  121.   GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING;7 u* A! Z2 I4 q5 M
  122.   GPIO_Init(GPIOB, &GPIO_InitStructure);  2 y$ |7 A! ?0 o1 \, K: T

  123. 4 @% D) L: n) N# R
  124.   GPIO_SetBits(GPIO_LED, GPIO_Pin_6);
    - v* A- Q, F2 X8 v7 D
  125.   
    - [2 z* q% ~! y2 P4 H5 L' l5 V
  126.   
    - w9 B5 q. `  m* m, b
  127.   /* Enable PWR and BKP clock */; i& H- H; G  s$ U. `3 \$ c
  128.   RCC_APB1PeriphClockCmd(RCC_APB1Periph_PWR | RCC_APB1Periph_BKP, ENABLE);4 G' [3 J) t1 H
  129.   /* Enable WKUP pin */
    2 \  w$ e( u% p1 [8 c& W9 o
  130.   PWR_WakeUpPinCmd(ENABLE);+ r  O, K- X$ L) p, C. x0 E
  131.   /* Allow access to BKP Domain */
    ' _8 K( Z) P5 s3 Y! X7 J8 ^
  132.   PWR_BackupAccessCmd(ENABLE);7 A7 e# u+ v! S" g0 E, U0 [

  133. - N/ E5 R% x' @4 B
  134.   /* Configure RTC clock source and prescaler */
    - ]) R( [& P; t" B8 }
  135.   RTC_Configuration();, u  W7 R0 {: x  ^* d2 {" `$ M
  136.   C" _% p3 n" v' ]# _" `# B4 E- b
  137.   /* Configure EXTI Line to generate an interrupt on falling edge */
    7 n/ H3 \' S" n9 t, q0 j' B; F
  138.   GPIO_EXTILineConfig(GPIO_PortSourceGPIOB, GPIO_PinSource11);; k& t% G) C( U
  139.   EXTI_InitTypeDef EXTI_InitStructure;% K7 r4 ~3 Y5 I
  140.   EXTI_InitStructure.EXTI_Line = EXTI_Line11;% g1 }# F, P& r% U
  141.   EXTI_InitStructure.EXTI_Mode = EXTI_Mode_Interrupt;
      v( ]( U+ {8 ?. [6 ^
  142.   EXTI_InitStructure.EXTI_Trigger = EXTI_Trigger_Falling;
    1 y& M$ B. x0 S( d% V
  143.   EXTI_InitStructure.EXTI_LineCmd = ENABLE;/ S. N! J) O$ m8 z4 p
  144.   EXTI_Init(&EXTI_InitStructure);  2 Z. x) k4 K; Y, E

  145. 2 @7 ]$ Y, W$ W, ~) b
  146.   NVIC_GroupSet(NVIC_PriorityGroup_0, EXTI15_10_IRQn, 1);
    / c# K$ X  ]2 N! n( l4 h. \

  147. 6 W4 R) {* i% _  K
  148.   /* Configure SysTick to generate an interrupt each 250ms */; Q& \8 g: L" H1 m, ~
  149.   SysTick->LOAD = 250000*9;3 E* M9 T8 L  I9 A$ w% m3 s
  150.   SysTick->VAL = 0x00;//清空计数器
    " y& T' A+ _# c) @
  151.   /* ---------------------------------------------------------------------5 O3 j1 _) |$ j* k2 _. |, N9 x/ ~" S
  152.   SysTick 控制与状态寄存器的位
      f4 p3 }/ @5 n+ H7 }  G; F% }
  153.   SysTick->CTRL: CountFlag【16】,CLKSource【2】,TickINT【1】,ENABLE【0】
    0 g" v! d, a4 }# i5 I# Z3 d
  154.   --------------------------------------------------------------------- */
    / V, Q9 |" `/ ^2 w  ~8 B8 b& t
  155.   //CLKSource【2】=0  使用外部时钟源HCLK(1:内核时钟HCLK/8)5 T7 J1 x, h; \3 D5 _2 ^
  156.   //  TickINT【1】=0  向下计数至0，不会挂起Systick(1:至0会挂起Systick)
    & g- ?: M3 e5 ~: `; C% [
  157.   //   ENABLE【0】=0  禁止计数器（1:使能，至0将CountFlag置1）
    , U, E( U# q& d" }: X2 W2 W* d# J
  158.   SysTick->CTRL = 0x00003;
    9 }1 M) ?9 `+ m8 V
  159. }
    , S' L$ Y0 Z/ U/ t$ Y' n: g
  160. , z) r& E& }# d7 t6 K
  161. #endif! @* r; x8 p, C
  162. /******************* (C) COPYRIGHT 2008 STMicroelectronics *****END OF FILE****/
    9 _/ t% L9 c, R& q0 L) H; m( a
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Dylan疾风闪电 回答时间：2016-1-7 15:19:19
  1. /**9 y$ M# H; P7 w* r+ Q1 X0 {
  2.   ******************************************************************************* Q/ C& c; @- i
  3.   * @file /PWR_STOP.h$ }  L/ r* K; C) O7 X, f
  4.   * @author    xd.wu6 B$ z$ Y# r3 C- r, p5 m* U- u: }9 Z
  5.   * @version   V1.07 f6 Z! B/ W/ f9 {
  6.   * @date     2012-4-19% d+ X6 u7 q2 z1 [4 R
  7.   * @brief    PWR：停机模式3 @3 L; M7 b( V1 K/ {
  8.   WFE事件  新来的中断、之前悬起的中断等(比较容易唤醒)
    6 j8 K  b1 u8 u0 N9 s4 \
  9.   WFI中断  
    $ O+ ?. F  R- q
  10.   ******************************************************************************
    : D9 C* o" n9 k! a, C- A
  11.   *用途：
    $ G0 p+ B" R  S. k  V
  12.   2.停机模式
    9 k9 ^  _6 Q5 _! `5 T4 m  s
  13.     进入：
    9 Q7 E9 U0 \& U/ ^, H
  14.       设置CM3中的SLEEPDEEP位 , PWR_CR中清除PDDS位 , 设置LPDS位, `) `. F7 {: m
  15.       然后执行WFI(等待中断)或WFE(等待事件)指令
    1 I! ]" ~$ R  ]' N1 W3 O  A# l
  16.     唤醒：任意外部中断可唤醒
    $ |. L- p) X  u# M8 l" h
  17.     唤醒延时：HSI RC唤醒时间 + 电压调节器从低功耗唤醒的时间
    ' C" L' z# E, ?' ]

  18. : N8 N- F9 Y# I. X
  19.   SCB->SCR[4:0] == SEVONPEND,0,SLEEPDEEP,SLEEPONEXIT,0
    % g6 O6 ?7 |4 g  e
  20.   */
    1 {, \7 t% Z& i9 W
  21.   /*实例应用步骤：, a( d/ A9 E4 I; h+ l& x% A
  22.   //1."main.cpp"调用fmain()6 ~' `! t$ z0 h' z* u
  23.   
    & W* c% N; G* l* \  G3 }& Y4 m+ M
  24.   //2."stm32f10x_it.cpp"拷贝8 ?7 V. V5 @' _) v/ ~  P
  25.   #ifdef  __PWR_STOP5 Y2 `- Z. p$ F* u, M9 S6 ~9 x
  26.   void RTCAlarm_IRQHandler(void); Z! n- K+ K% ]& I9 ?, _
  27.   {. D. N6 I8 a8 Q( b( N2 e
  28.     if(RTC_GetITStatus(RTC_IT_ALR) != RESET)0 O( s% {  {4 d+ z: K" i( b" L
  29.     {" i" q3 q2 h, l
  30.       GPIO_WriteBit(GPIOF, GPIO_Pin_8, (BitAction)(1 - GPIO_ReadOutputDataBit(GPIOF, GPIO_Pin_8)));
    5 r; B9 h* Y& @
  31.   . t6 x5 E' c# j6 i- ~$ ^
  32.       EXTI_ClearITPendingBit(EXTI_Line17);
    6 N6 U; k6 N% e: v3 N* v( u& O
  33.   
    2 K% c/ P4 e* j& R3 p
  34.       if(PWR_GetFlagStatus(PWR_FLAG_WU) != RESET)! V9 d# X- \7 S4 `
  35.       {! y% P4 Q% d$ j7 ?8 J1 ?. i+ U
  36.         PWR_ClearFlag(PWR_FLAG_WU);9 C* f) X. g/ |0 U
  37.       }
    4 `# h! A. g' }0 O, _/ i
  38.   : T6 b* a$ d+ P2 R+ ?+ W
  39.       RTC_WaitForLastTask();   ) }' m* l5 @1 e- T
  40.   
    - K8 f, E- W, ?
  41.       RTC_ClearITPendingBit(RTC_IT_ALR);
    " B% F- @4 [. C3 f3 O! Z$ K
  42.   
    : b$ R9 z- @3 R' _! F
  43.       RTC_WaitForLastTask();4 y' O0 e( N( q7 s) ^. a/ v
  44.     }
    6 r8 U% T3 C4 {- s' I, a) |5 c
  45.   }0 I. T& s3 u* M  W+ N' d" ?0 H! {
  46.   #endif. ~, l7 |9 ]) m0 V! C1 D7 N
  47.   , x7 Q' c0 m" B9 y
  48.   //3."stm32f10x_it.h"声明, j* n9 e% l3 |# B+ Y8 U
  49.   #define __PWR_STOP# E  m/ F& J! k  Y
  50.   void RTCAlarm_IRQHandler(void);" Q( ~- X& `  N4 y: c' r
  51.   
    : z. H) e  }* L- f3 F" S. E
  52.   //4.Watch中观察( K7 R9 o6 d& r8 u5 Y$ g" L# b
  53.   LED绿灯变化6 g8 m' N( g" x9 S1 G3 C$ b* Z
  54.   进入停机模式，3s后RTC闹钟唤醒，红灯点亮，循环; p+ N+ _+ n. q
  55.   */
    2 t" g& `8 z. x2 w9 _$ O1 I, Y
  56. 2 F+ m* s. D; j/ K; S
  57. #ifndef __PWR_STOP_H
    ! }" ~6 ]$ Z2 b1 g8 D
  58. #define __PWR_STOP_H
    ( d4 d) B' ^: Y( s- y
  59. /* Includes ------------------------------------------------------------------*/
    + @/ M2 l" ]9 i: z) w( _9 k
  60. #include "std32periph.h"3 F1 \5 e( U; g( N
  61. 0 K& Z, C; U2 S% A" G, C- G- F9 j
  62. /* Private typedef -----------------------------------------------------------*/2 a/ E; c  I+ g/ r5 \
  63. /* Private define ------------------------------------------------------------*/
    $ {- y/ |1 W% ?( I9 \5 [
  64.   #define GPIO_LED      GPIOF    + E; y& w- ~/ N3 Q% e6 G3 z
  65.   #define RCC_LED       RCC_APB2Periph_GPIOF
    0 v: h; `9 L4 W3 Y2 W
  66. /* Private macro -------------------------------------------------------------*/6 y, i5 \1 p/ Z- E8 e' z4 V  n  H
  67. /* Private variables ---------------------------------------------------------*/! P$ L2 \8 z6 Q/ c7 {9 Q
  68. /* Private functions ---------------------------------------------------------*/  J+ c0 V  z  ^
  69. # q$ V: O! |3 ?5 V; h$ P( j. O; f5 }
  70. void SYSCLKConfig_STOP(void)
    & c. V0 W! e5 \, [6 C. s
  71. {) {, P9 _/ m9 W6 w! H
  72.   /* Enable HSE */
    1 v/ f8 W6 O  z  X: t$ N
  73.   RCC_HSEConfig(RCC_HSE_ON);
    # {; z% h$ z4 _8 J

  74. " n- z; B2 V5 y/ b/ K: t
  75.   /* Wait till HSE is ready */2 u1 }7 t+ P  `$ c7 O# g- N
  76.   ErrorStatus HSEStartUpStatus;
    . [7 E9 t. ]8 H# V1 z, @
  77.   HSEStartUpStatus = RCC_WaitForHSEStartUp();% R$ M1 [2 w6 ~: l: h
  78. ! i2 h/ o! v6 v5 M- z& P! h
  79.   if(HSEStartUpStatus == SUCCESS)8 A& V* s. I& L, E. E' X
  80.   {) o# Q0 o: D5 H' E+ o& Q% I) @: V
  81.     /* Enable PLL */ 4 ~9 m% S' r2 h* b' h
  82.     RCC_PLLCmd(ENABLE);: Z) E9 R2 C; H

  83. ) G$ N0 I% D6 i) m1 \- I1 I
  84.     /* Wait till PLL is ready */+ s) L# O  ]" a% ]+ _
  85.     while(RCC_GetFlagStatus(RCC_FLAG_PLLRDY) == RESET): U1 M' F! G0 m! u
  86.     {
    2 P" q$ A, c5 c
  87.     }( r( c* e& v* R3 z1 o" t+ X

  88. / W7 ?- o% Y  C: \) f6 s! }
  89.     /* Select PLL as system clock source */
    0 O- {' r( v- P+ j4 o
  90.     RCC_SYSCLKConfig(RCC_SYSCLKSource_PLLCLK);) A- D" y" M7 J$ h* M+ }
  91. 0 _+ f+ ^; ~% T" x% p
  92.     /* Wait till PLL is used as system clock source */
    ) F1 t) r9 ^" t& @& P7 a# }$ ^; Y+ |
  93.     while(RCC_GetSYSCLKSource() != 0x08)0 b( g7 Z+ I0 Z7 W) w! o% i% H; v
  94.     {- |5 ?) v4 {* X; c. c$ e4 e
  95.     }
    ) M% [$ s6 l- l6 q
  96.   }3 P# f# p6 s0 z% m# h
  97. }; k0 Z: f5 d9 o0 W) L

  98. % L+ D$ I: l9 D9 p' y7 Z
  99. void RTC_Configuration(void)
      E, \; j5 l# V
  100. {
    2 L; q4 V) T/ j
  101.   /* RTC clock source configuration ------------------------------------------*/
    ! g0 i- H+ ]6 _2 v$ f) I" ?2 u6 G
  102.   /* Reset Backup Domain */
    4 P2 y1 K$ W0 N( P1 R; r
  103.   BKP_DeInit();1 @) D, a0 z0 F' E5 a
  104.   : [) G9 P7 I; u
  105.   /* Enable the LSE OSC */
    # k3 x3 g; u5 t/ c% N
  106.   RCC_LSEConfig(RCC_LSE_ON);$ ?* g$ W7 T# e7 D
  107.   /* Wait till LSE is ready */
    , V- x+ f2 k6 {
  108.   while(RCC_GetFlagStatus(RCC_FLAG_LSERDY) == RESET)5 j5 }% A) D; y0 }* W
  109.   {
    + Q6 U. Z: ~8 w1 b# w$ }, Q
  110.   }3 P; q9 w) l' k; q9 z7 S) Z
  111. 1 n/ z3 F; {1 S# c- ?" Z; l
  112.   /* Select the RTC Clock Source */
    $ H0 Z  i! k/ W# @& C
  113.   RCC_RTCCLKConfig(RCC_RTCCLKSource_LSE);6 o$ U0 u+ [$ j3 \: M' L9 R* u  X

  114. / u& A# e' L+ r( q# F
  115.   /* Enable the RTC Clock */6 i7 z& ^/ M' [/ _( x
  116.   RCC_RTCCLKCmd(ENABLE);
    . M3 _$ q  H0 F1 w+ L: g" c# J. c
  117. $ ~7 b0 J$ F( L7 L3 X
  118.   /* RTC configuration -------------------------------------------------------*/- j& I( D( }7 }5 `+ V& m$ `  d9 A
  119.   /* Wait for RTC APB registers synchronisation */; m8 B  L/ X0 t  K9 M* ^
  120.   RTC_WaitForSynchro();
    & S& P: P7 Y3 p1 S+ p
  121. 4 T, u2 I+ F7 e/ ]7 \9 _/ e3 `
  122.   /* Set the RTC time base to 1s */
    ( r; B4 r7 c9 {% ^) \, G
  123.   RTC_SetPrescaler(32767);  
    0 C# V; B$ F7 X, p3 \$ C
  124.   /* Wait until last write operation on RTC registers has finished */
    9 t5 k7 y: _6 [& @5 z# {% w
  125.   RTC_WaitForLastTask();
    . e2 h) N" v5 H# a7 _

  126. 7 `; G# p" ]; O) o
  127.   /* Enable the RTC Alarm interrupt */4 Q) a8 N) F6 L& A
  128.   RTC_ITConfig(RTC_IT_ALR, ENABLE);
    2 J9 D' p* _5 b( Q0 V
  129.   /* Wait until last write operation on RTC registers has finished */) o; u1 d5 c- G/ x; O
  130.   RTC_WaitForLastTask();
    1 E( b- c" w' |7 Z, D2 F2 F7 ^  \
  131. }
    7 l" p: u7 [5 C! K4 M! J

  132. 1 }' i! B8 @! u/ h( i
  133. / g1 W7 q* p, j4 ~" e
  134. void fmain(void)
    # T2 v& M% O" M, E1 T; U
  135. {
    * z& A4 `+ ^9 I- m1 t
  136.   RCC_HSEConf(9);//72M2 L7 D# W  B0 h! K; G
  137.   ! {+ v& G& h3 i
  138.   RCC_APB2PeriphClockCmd(RCC_LED | RCC_APB2Periph_AFIO, ENABLE);) U/ D: S$ z$ l" ]5 J
  139.   
    + m) R, D! O/ N+ n
  140.   GPIO_InitTypeDef GPIO_InitStructure;9 ?( }% ?; V1 a# A
  141.   GPIO_InitStructure.GPIO_Pin = GPIO_Pin_6 | GPIO_Pin_8;" |  V" ?' ~  B) A
  142.   GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;; N: P* f( W, @
  143.   GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP;2 }5 u' d+ H0 e/ N
  144.   GPIO_Init(GPIO_LED, &GPIO_InitStructure);/ ~" w4 J2 T5 V* ^( b, {
  145. ) r2 K+ n% z9 @# c
  146. / b: R- t! p6 u
  147.   /* Configure EXTI Line17(RTC Alarm) to generate an interrupt on rising edge */- D' ^% Z' V/ d  l% R
  148.   EXTI_ClearITPendingBit(EXTI_Line17);
    ' O5 o3 n2 D0 m! i; _3 S7 B
  149.   EXTI_InitTypeDef EXTI_InitStructure;( f5 o. }0 i. p
  150.   EXTI_InitStructure.EXTI_Line = EXTI_Line17;
    * N/ o, a* ?: k3 H, p4 E  E( c* x
  151.   EXTI_InitStructure.EXTI_Mode = EXTI_Mode_Interrupt;7 ]2 x/ x4 m/ P
  152.   EXTI_InitStructure.EXTI_Trigger = EXTI_Trigger_Rising;& t+ }6 |7 \- R! P* Z4 O) ^9 t
  153.   EXTI_InitStructure.EXTI_LineCmd = ENABLE;
    : N1 U5 U8 p0 F" U! U1 v9 E
  154.   EXTI_Init(&EXTI_InitStructure); $ [- R, [6 c/ M; h: n& N  q/ C
  155. 2 ]' w  i1 A6 W' I' ?
  156.   ; l" p! L. a/ V8 m9 W/ _
  157.   /* Enable PWR and BKP clock *// }6 @- y2 v+ D6 s
  158.   RCC_APB1PeriphClockCmd(RCC_APB1Periph_PWR | RCC_APB1Periph_BKP, ENABLE);$ x4 Z) [. P, t/ y3 t1 a( e" r
  159.   /* Allow access to BKP Domain */; ?% d1 {  i) S: M# O! H* D: o
  160.   PWR_BackupAccessCmd(ENABLE);8 j# J! ~1 K$ r. A, x# J
  161.   /* Configure RTC clock source and prescaler */
    6 |7 ?5 |( o+ q  u
  162.   RTC_Configuration();* I+ Q& s' k6 ^; m8 B3 T
  163. * N* I& g4 @8 u7 H: p1 f- }

  164. ' h* M2 t- H2 s8 r
  165.   NVIC_GroupSet(NVIC_PriorityGroup_0, RTCAlarm_IRQn, 0);( @( g/ X+ s8 p$ y+ S. ]9 F7 p

  166. 5 J. k' E  Q$ I4 L; y
  167.   GPIO_SetBits(GPIO_LED, GPIO_Pin_6);
    . e' c' o) L7 B
  168.   
    $ |. i2 w- ]5 }/ @
  169.   while (1)
    2 Q4 [$ q/ M% h% X' B) k) ?/ j
  170.   {
    6 ]  u; O" p$ V3 ~) R# ?0 ?/ o/ t
  171.     /* Insert 1.5 second delay */
    * `% n" P. J2 G0 k7 g
  172.     Delay_us(1.5e6, 72);9 ?. s! R, [% P, R# @" k7 P1 K! _
  173. / J1 G# w& d' c7 `( A% q
  174.     4 ~" s# R4 U! l: f0 h. `
  175.     RTC_ClearFlag(RTC_FLAG_SEC);
    & C/ U# K3 x4 [# E1 _2 z) h
  176.     while(RTC_GetFlagStatus(RTC_FLAG_SEC) == RESET);
    * o+ I; `- B. A$ W2 {, N4 Y8 a
  177. 2 ?8 F6 @, M& f6 n8 L9 v
  178.     RTC_SetAlarm(RTC_GetCounter()+ 3);1 e) E" I7 V$ A) C
  179.     RTC_WaitForLastTask();
    3 L0 ^( y0 ~  {( t2 H# g- A* S

  180. ( M6 M+ {$ G" M8 G* h. j" F
  181. 1 s! x9 Z6 c4 B
  182.     GPIO_ResetBits(GPIO_LED, GPIO_Pin_6);
      p( l4 K7 l1 t/ B3 N
  183. $ a7 @0 Q* _% V: G: \4 i+ C5 t  |
  184. ! j$ b) A$ V! N; X) j9 m+ @& J8 u5 @* [
  185.     //PWR_EnterSTOPMode(PWR_Regulator_LowPower, PWR_STOPEntry_WFI);8 e/ b/ y( g; X7 [
  186.     RCC->APB1ENR |= 0x10000000;//PWREN：电源接口时钟使能
    * b. N9 Q- n% [( ^; r$ i
  187.     SCB->SCR |= 0x00000004;//SLEEPDEEP = 1# J5 G, {" e% D' |3 f+ x9 p2 ~
  188.     PWR->CR &= 0x1FD;//PWR_CR中清除PDDS位 , 设置LPDS位. y" V3 F5 @$ X- t  @% ~$ \
  189.     PWR->CR |= 0x001;! p5 v" _  i$ x2 {$ {
  190.     __WFI();: j5 K; i' x, e1 i1 d2 l( W' {! x1 J
  191.     4 `. d4 O& C. V

  192. . h  x. c3 M1 y0 e" n2 H
  193.     GPIO_SetBits(GPIO_LED, GPIO_Pin_6); 2 C) l! ?- g' S+ B
  194. 5 i- Z. j3 u0 m0 v! r) R9 A
  195.     SYSCLKConfig_STOP();
    + H/ V, Q2 o6 F- {3 V1 w! y
  196.   }
    1 p* n( K( H) L" C  q
  197. }. |& f* }6 L7 Y% ?7 i
  198. 3 \& w2 ]8 W$ J' F, ~4 t  d
  199. #endif
    : M* O- H1 W% t7 e4 K5 a$ H5 l
  200. /******************* (C) COPYRIGHT 2008 STMicroelectronics *****END OF FILE****/5 X6 P7 `1 P( K$ _& ]# q0 y
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Dylan疾风闪电 回答时间：2016-1-7 15:19:38
  1. /**2 d( E1 Q6 ?* Y0 z
  2.   ******************************************************************************
    6 ~) N' v* B) O+ v
  3.   * @file /SPI_Example.h- R. `$ i- }' ?" z
  4.   * @author    xd.wu
    ) W0 H6 X* K7 b( b( }
  5.   * @version   V1.0
    4 o1 v4 D, G" y# R! ]! b
  6.   * @date     2012-5-16
    " F. R/ a* p# u9 G8 h2 m; z
  7.   * @brief    SPI：- c0 i$ o4 R% H& y0 @% H5 X
  8.   ******************************************************************************
    ; S% C( i9 C( s. @; I$ D
  9.   *用途：
    * R+ v' i3 m) c1 p% X
  10.   */
    ( c8 b0 a& x) @0 X
  11.   /*实例应用步骤：, l! {0 p' t% i  A5 S
  12.   //1."main.cpp"调用fmain()
    . w/ t, e; b' i( p* R

  13. # _8 _% _7 U0 Q  [: [
  14.   //2.Watch中观察$ {: Z1 L2 V8 g7 F; k2 ~! ]& m9 E
  15.   Tx_Buffer:Rx_Buffer8 Q" P/ s* z- k+ ^, M+ A$ F0 C3 d- C
  16.   */- @% Z0 G" q* ~; r
  17. 6 j2 O" V$ u4 k0 p" H
  18. #ifndef __SPI_EXAMPLE_H
    , m+ G+ X3 T( i. g& A9 s
  19. #define __SPI_EXAMPLE_H& z! l8 u7 G& s+ D: a
  20. /* Includes ------------------------------------------------------------------*/
    + \5 B9 \! u8 y( X/ Q
  21. #include "std32periph.h"
    ; o. I# k4 Y/ Z: @0 Z' I/ A

  22. & _/ G3 e. l) p' l; z5 s
  23. /* Private typedef -----------------------------------------------------------*/# M4 `) C, Q% I$ k5 w6 j% I! H9 O
  24. typedef enum {FAILED = 0, PASSED = !FAILED} TestStatus;  f9 x- G6 G1 t
  25. /* Private define ------------------------------------------------------------*/
    * L2 q+ S9 K! `% U) F
  26.   #define GPIO_CS           GPIOB/ w. P( J# M' Y0 I+ ^
  27.   #define RCC_CS            RCC_APB2Periph_GPIOB
    . J7 z% O; V, h) p$ Q' Z
  28.   #define Pin_CS            GPIO_Pin_2
    ; ^$ C) h# P" ^+ ]' d" c
  29.   #define SPI_FLASH_CS_LOW()       GPIO_ResetBits(GPIO_CS, Pin_CS)6 D) A; w& |. i' |: ^1 f
  30.   #define SPI_FLASH_CS_HIGH()      GPIO_SetBits(GPIO_CS, Pin_CS)
    5 W6 ?- g( |# O* j* h7 I$ o
  31. 0 W8 C) _! ~5 l( f6 s; F& ]
  32.   #define  FLASH_WriteAddress     0x7000007 z' A1 d3 C* o4 L
  33.   #define  FLASH_ReadAddress      FLASH_WriteAddress, j5 C9 ^  m2 \7 Q; O6 ?7 {6 C+ E
  34.   #define  FLASH_SectorToErase    FLASH_WriteAddress# T7 D8 Y, I- o3 \; [' G2 t
  35.   #define  M25P64_FLASH_ID        0x202017
    ; A% E6 @' m. c
  36.   #define  BufferSize (countof(Tx_Buffer)-1)3 ?/ K( i1 {5 v

  37. 3 H; K' a4 u% M$ ]- d' D
  38.   #define SPI_FLASH_PageSize    0x100
    3 E# q+ ]+ Q* K; t3 t7 ?
  39.   #define WRITE      0x02  /* Write to Memory instruction */
    1 P7 k* R4 N4 s3 j2 F% L
  40.   #define WRSR       0x01  /* Write Status Register instruction */
    5 C1 K' ^4 L* l6 W
  41.   #define WREN       0x06  /* Write enable instruction */
    " J* t; e3 w2 H) X
  42.   #define READ       0x03  /* Read from Memory instruction */
    ' x% w* x$ d, J# K3 M% m+ {" M
  43.   #define RDSR       0x05  /* Read Status Register instruction  */
    ' d2 p/ t. w- Y6 P
  44.   #define RDID       0x9F  /* Read identification */
    : _  S9 H" }/ O, d
  45.   #define SE         0xD8  /* Sector Erase instruction */0 O- D' ^( F( [  B4 n
  46.   #define BE         0xC7  /* Bulk Erase instruction */
    : A, D, E+ P/ K% y
  47.   #define WIP_Flag   0x01  /* Write In Progress (WIP) flag */, ~3 J; w5 L8 M& f8 I9 f( k$ I
  48.   #define Dummy_Byte 0xA5
    " A7 }' |. w# [7 I( X
  49. /* Private macro -------------------------------------------------------------*/* ?) l8 _; S" n7 l
  50.   #define countof(a) (sizeof(a) / sizeof(*(a)))  
    + b( p' ]8 y& i4 R2 N8 Z- M
  51. /* Private variables ---------------------------------------------------------*/% l" U) Z/ p4 ]$ e& Q
  52.   u8 Tx_Buffer[] = "STM32F10x SPI Firmware Library Example: communication with an M25P64 SPI FLASH";
    4 j& ?. E6 _+ C  z3 b  Q: W$ z
  53.   u8 Index, Rx_Buffer[BufferSize];) i. I/ A( m4 \+ `
  54.   volatile TestStatus TransferStatus1 = FAILED, TransferStatus2 = PASSED;0 p& Z5 W/ ~/ ~4 i0 u
  55.   vu32 FLASH_ID = 0;- r5 D( x4 R. R1 |7 E& U2 ], h
  56. /* Private functions ---------------------------------------------------------*/
    1 \/ V9 O! n$ M2 S+ P  n
  57.   TestStatus Buffercmp(u8* pBuffer1, u8* pBuffer2, u16 BufferLength);
    . U1 T7 A9 I& u; O% O+ R
  58.   /*----- High layer function -----*/* o: A3 \$ e$ a( O( R' g# A4 m
  59.   void SPI_FLASH_Init(void);
    * J# Q% C8 c5 X, X6 J' w- M/ q; n% P2 [
  60.   void SPI_FLASH_SectorErase(u32 SectorAddr);
    & k, n9 u6 Q# y8 ^# z  ]
  61.   void SPI_FLASH_BulkErase(void);
    2 t+ \! ~$ U- z6 }9 v( d
  62.   void SPI_FLASH_PageWrite(u8* pBuffer, u32 WriteAddr, u16 NumByteToWrite);
    7 |  i) x7 B' h! ~* N, a
  63.   void SPI_FLASH_BufferWrite(u8* pBuffer, u32 WriteAddr, u16 NumByteToWrite);; `/ l& K, o9 Y5 \# n; F
  64.   void SPI_FLASH_BufferRead(u8* pBuffer, u32 ReadAddr, u16 NumByteToRead);
      p$ G" N! E, n4 ^6 u2 }* g* D3 X
  65.   u32 SPI_FLASH_ReadID(void);" k# @  y% u5 h3 r* a
  66.   void SPI_FLASH_StartReadSequence(u32 ReadAddr);
    3 N- y/ ~) j5 c8 W7 {
  67.   /*----- Low layer function -----*/
    ) ?" u& f5 i5 c
  68.   u8 SPI_FLASH_ReadByte(void);: Y+ |9 K% f3 M" s
  69.   u8 SPI_FLASH_SendByte(u8 byte);3 A  ]4 a3 n5 t" o' k. o' t, A) c
  70.   u16 SPI_FLASH_SendHalfWord(u16 HalfWord);3 Q3 c; p1 u) C9 N% t0 [' T" n: u
  71.   void SPI_FLASH_WriteEnable(void);; y3 @, \" e; |( \! K& ~8 V, w
  72.   void SPI_FLASH_WaitForWriteEnd(void);* \1 [" b: i5 ?& X8 H/ c
  73. ) _$ u+ d* q, q: i  b
  74.   3 c# ]( I1 \' f( H. Y4 J
  75. void fmain(void)
    . a- Q2 |2 l# _  E7 W
  76. {  [/ b1 w: B, S
  77.   RCC_HSEConf(9);//72M* {- N+ ?- P: U# y7 n
  78.   
    9 q& P7 V4 N! a% F/ s, w& s" }% t
  79.   /* Initialize the SPI FLASH driver */
    : V; s3 x: U7 n) V  |/ ]: c
  80.   SPI_FLASH_Init();
    / E9 B# o% `' g3 r' b

  81. , n; P+ R# f% B7 h; l; X1 w6 L9 Y
  82.     /* Perform a write in the Flash followed by a read of the written data */$ K) q% n0 t9 b
  83.   /* Erase SPI FLASH Sector to write on */3 B2 h; l6 E4 T& [2 P: y
  84.   SPI_FLASH_SectorErase(FLASH_SectorToErase);3 z3 |4 W% l$ w1 y# k
  85. * Y3 H4 |% j" l$ D( k, N
  86.   /* Write Tx_Buffer data to SPI FLASH memory */
    9 a* G/ V: F4 z: |* v7 C
  87.   SPI_FLASH_BufferWrite(Tx_Buffer, FLASH_WriteAddress, BufferSize);# s9 s- h  w7 \3 Q

  88. : l' C% _( Q! C: d! T4 u
  89.   /* Read data from SPI FLASH memory */1 k" u2 u& i& c5 \- P3 R
  90.   SPI_FLASH_BufferRead(Rx_Buffer, FLASH_ReadAddress, BufferSize);
    . v/ F. s( Q' \3 m, K/ U: d$ M

  91. ! Y8 B( u& n, N& q- b' s/ k% W
  92.   /* Check the corectness of written dada */1 A& N! I8 J1 {( H" t' z
  93.   TransferStatus1 = Buffercmp(Tx_Buffer, Rx_Buffer, BufferSize);7 ]9 o9 X. N- M' B8 {6 d8 {! ?3 n/ R
  94.   /* TransferStatus1 = PASSED, if the transmitted and received data by SPI1
    9 Z$ I1 u! }7 c
  95.      are the same */5 o) ?# Y# q0 |9 W; D
  96.   /* TransferStatus1 = FAILED, if the transmitted and received data by SPI1" o/ q- ~4 v. ]" a# L2 C- A% `
  97.      are different */3 X1 j0 R2 V' P7 l

  98. ( K; o; F: q* V
  99.   /* Perform an erase in the Flash followed by a read of the written data */% Y8 X8 v5 k4 ?% P, i, h& c
  100.   /* Erase SPI FLASH Sector to write on */
    ' T5 ~: z; z& i. P' I4 s, C: K
  101.   SPI_FLASH_SectorErase(FLASH_SectorToErase);' a  q# M' W+ G1 @0 P* W

  102. " p# h9 t4 D8 D
  103.   /* Read data from SPI FLASH memory */0 F+ @8 e2 A* m( M, b$ N7 w8 G
  104.   SPI_FLASH_BufferRead(Rx_Buffer, FLASH_ReadAddress, BufferSize);
    / M/ y5 A2 {  Z% r, u% L" k
  105. ! p* ]5 R) ^4 \% `4 Z
  106.   /* Check the corectness of erasing operation dada */
    ( o: I+ V8 F4 n* i1 v/ g8 q5 L  ?9 [
  107.   for (Index = 0; Index < BufferSize; Index++)
    9 P* v$ \: K$ @/ H
  108.   {
    3 v1 H  m( `( c3 U1 N1 m; F
  109.     if (Rx_Buffer[Index] != 0xFF)
    4 N/ j2 [$ T6 A' i. X0 ~3 n
  110.     {' t9 P  @7 O/ O' n
  111.       TransferStatus2 = FAILED;# ]% N+ ]9 M" m5 T, r) N3 J
  112.     }0 L7 D" f' I( X3 E6 p4 V: i5 R
  113.   }! H6 f  \7 @8 K3 ^$ G& b1 E
  114.   /* TransferStatus2 = PASSED, if the specified sector part is erased */
    5 z$ X) i/ ]8 ^# F8 L5 C2 W
  115.   /* TransferStatus2 = FAILED, if the specified sector part is not well erased  */- \$ ~" M$ m2 B. F
  116. }7 J% Z6 y: T3 O' c& J5 b% m
  117. : ~; ]) J& W+ c9 c- ^0 H+ m
  118. void SPI_FLASH_Init(void)
    - u: Y+ D- F" [- n% ]
  119. {
    7 @; ~  h8 m! ^6 q0 h2 {, G
  120.   RCC_APB2PeriphClockCmd(RCC_APB2Periph_SPI1 | RCC_APB2Periph_GPIOA |4 n4 T0 [8 S/ j+ ^: k' A
  121.                          RCC_CS, ENABLE);
    . `6 F" k$ x& D2 n% A
  122. & g4 E4 b3 X' q% J
  123.   GPIO_InitTypeDef GPIO_InitStructure;
    $ k0 ?6 l+ P1 y8 u) e
  124.   /* Configure SPI1 pins: SCK, MISO and MOSI */% k$ T' i: T% P  ~6 |
  125.   GPIO_InitStructure.GPIO_Pin = GPIO_Pin_5 | GPIO_Pin_6 | GPIO_Pin_7;" N1 l3 z1 t+ W# N
  126.   GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;, ]0 J8 u% F3 `8 F5 _
  127.   GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
    1 t( a+ R' Y$ l/ ?$ p
  128.   GPIO_Init(GPIOA, &GPIO_InitStructure);6 ~1 Z* g% E) {8 ?9 r$ Q! ?
  129.   /* Configure I/O for Flash Chip select */" V2 A! X% y  l5 x! L. U( `: D1 A6 H
  130.   GPIO_InitStructure.GPIO_Pin = Pin_CS;& s5 c3 u9 V1 k+ C) G( k% \
  131.   GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP;) B9 L1 U, t3 s, U( f. h
  132.   GPIO_Init(GPIO_CS, &GPIO_InitStructure);
    ) A, r2 E- ~* m- q. j0 O8 i
  133.   /* Deselect the FLASH: Chip Select high */
    ' R; ^/ }' [" G. \0 i  A8 M
  134.   SPI_FLASH_CS_HIGH();
    * Y* l3 Q3 @' o$ A6 y' L9 D

  135. 7 V0 X# g4 n& F8 Y! Q% ]
  136.   /* SPI1 configuration */
    : f- L% |2 R; v# g
  137.   SPI_InitTypeDef  SPI_InitStructure;8 W# L* `6 t- \& ~; F& R/ t+ G
  138.   SPI_InitStructure.SPI_Direction = SPI_Direction_2Lines_FullDuplex;# `2 G' r3 v0 J. [
  139.   SPI_InitStructure.SPI_Mode = SPI_Mode_Master;8 \2 u/ K3 s  K5 J( ^! h
  140.   SPI_InitStructure.SPI_DataSize = SPI_DataSize_8b;
    2 _; {0 R* j% B& k% r. a
  141.   SPI_InitStructure.SPI_CPOL = SPI_CPOL_High;" r* k# U+ Q, J
  142.   SPI_InitStructure.SPI_CPHA = SPI_CPHA_2Edge;
    ; `8 B3 ?+ y4 u# o- [' [6 R
  143.   SPI_InitStructure.SPI_NSS = SPI_NSS_Soft;
    ) p; M* d) T2 o8 v9 C
  144.   SPI_InitStructure.SPI_BaudRatePrescaler = SPI_BaudRatePrescaler_4;5 I/ l( O1 W4 o4 ]$ t4 f
  145.   SPI_InitStructure.SPI_FirstBit = SPI_FirstBit_MSB;5 H4 b# u1 E3 {0 G0 g+ n
  146.   SPI_InitStructure.SPI_CRCPolynomial = 7;
    2 T6 ^7 q/ N1 Q8 B2 a3 O/ o/ @
  147.   SPI_Init(SPI1, &SPI_InitStructure);* X7 R; X, `$ H' ]/ q, W* f
  148.   /* Enable SPI1  */) K8 G# R, b# ~. Y8 y
  149.   SPI_Cmd(SPI1, ENABLE);+ U/ ?( X  V/ m+ S
  150. }
    ; C+ `) y9 l8 f+ b0 c4 O

  151. * f" `- z4 J5 Q2 Y9 M8 l
  152. void SPI_FLASH_SectorErase(u32 SectorAddr)
    $ x  j0 b% R; k3 m
  153. {
    5 G7 P3 ~* V2 v: @% H( w
  154.   /* Send write enable instruction */
    # f7 {+ N$ \; g% _% }
  155.   SPI_FLASH_WriteEnable();
      X1 s; g, ^' V% e; k6 [. m# j
  156. 9 r/ d( K4 H" q
  157.   /* Sector Erase */$ ^  }1 H! u! @6 t% I- d3 S2 Z
  158.   /* Select the FLASH: Chip Select low */
    7 B. p2 v! G4 r2 c, n
  159.   SPI_FLASH_CS_LOW();6 ?: \) k* \- H/ b1 p. o% v% I
  160.   /* Send Sector Erase instruction */$ A" I% H9 _: B9 g- l/ d
  161.   SPI_FLASH_SendByte(SE);
    9 Z. h) q. J# W* `6 `% e) ]& i
  162.   /* Send SectorAddr high nibble address byte */
    2 z# _' P' L. G1 s6 F2 q
  163.   SPI_FLASH_SendByte((SectorAddr & 0xFF0000) >> 16);3 G6 b9 L: k' e$ \
  164.   /* Send SectorAddr medium nibble address byte */
    , u9 j: K8 V3 W4 O: k2 l
  165.   SPI_FLASH_SendByte((SectorAddr & 0xFF00) >> 8);: z4 i, z" U* P0 W7 Z
  166.   /* Send SectorAddr low nibble address byte */
    . d+ `5 j5 Y* h! m4 D
  167.   SPI_FLASH_SendByte(SectorAddr & 0xFF);$ I# P% n6 ~3 r6 P  w
  168.   /* Deselect the FLASH: Chip Select high */; t$ ~4 [7 j4 q' E
  169.   SPI_FLASH_CS_HIGH();
    # a" r1 H! t6 ]/ F( J; B
  170. 8 e3 D( y" I* P5 B/ S; J5 i
  171.   /* Wait the end of Flash writing */
    % p* x% M+ v7 D# c* ?
  172.   SPI_FLASH_WaitForWriteEnd();) r2 H: C: C# m1 b1 w! A+ N' M9 \3 ^
  173. }% s8 n) X/ ?" x2 C( V) N  J
  174. 8 }: M1 F/ j+ w5 \6 W
  175. void SPI_FLASH_BulkErase(void)$ {; H9 d! s! E1 r- a
  176. {
    & `& y; p) I7 T1 ~7 B/ S8 s# \
  177.   /* Send write enable instruction */
    : j3 M8 R1 T) R7 E& }
  178.   SPI_FLASH_WriteEnable();$ v8 t+ W( ^# K- W! q. ]* n

  179. ( H  `0 ~0 I6 P. A$ x" }- A0 k' e' ]
  180.   /* Bulk Erase */
    ; y% G$ s7 I) ^% q7 H: m
  181.   /* Select the FLASH: Chip Select low */
    8 a6 x& S; T: F! Q' E+ h+ w0 n
  182.   SPI_FLASH_CS_LOW();; s4 ?5 {% W* \- Z* C
  183.   /* Send Bulk Erase instruction  */6 T; c0 r# N. |) g; O
  184.   SPI_FLASH_SendByte(BE);) O7 M0 I" k* r) g( e: R
  185.   /* Deselect the FLASH: Chip Select high */9 A  ^* V3 @! C2 `  [' }
  186.   SPI_FLASH_CS_HIGH();
    ; D/ C  p! s5 \3 W! N6 D

  187. ! U* U& N$ g8 E8 l8 K/ D
  188.   /* Wait the end of Flash writing */# o! A. h0 i1 b
  189.   SPI_FLASH_WaitForWriteEnd();9 d5 a9 T6 h$ H( j: u) R. T: s
  190. }8 [% w) O! l" Q6 y2 A$ K# ~
  191. . c- `, o2 f- I+ e0 g% q
  192. void SPI_FLASH_PageWrite(u8* pBuffer, u32 WriteAddr, u16 NumByteToWrite)0 E8 @# z9 x% k% n3 z; Y
  193. {
    , Q. N+ s8 X  U4 q- @7 L
  194.   /* Enable the write access to the FLASH */' Z7 [( |0 \  H: u3 b" X' {
  195.   SPI_FLASH_WriteEnable();
    " S; |3 a- {3 [  U* x+ j
  196. 3 |" l% ]$ r$ f6 W( |
  197.   /* Select the FLASH: Chip Select low */
    % q$ x$ f2 V: i5 B1 b
  198.   SPI_FLASH_CS_LOW();
    + E5 S+ @0 F8 K7 G4 g6 A" M9 ?
  199.   /* Send "Write to Memory " instruction */9 d; H8 ^/ M9 Z3 i
  200.   SPI_FLASH_SendByte(WRITE);
    / K8 a* _! q; ~& N4 W3 H" {
  201.   /* Send WriteAddr high nibble address byte to write to */
    2 Q# x( j' X/ N. W, r" J) V/ T
  202.   SPI_FLASH_SendByte((WriteAddr & 0xFF0000) >> 16);+ }% A6 U# [) _+ T9 F
  203.   /* Send WriteAddr medium nibble address byte to write to */
    ! w' l' _0 G7 X. I' h
  204.   SPI_FLASH_SendByte((WriteAddr & 0xFF00) >> 8);
    0 ]# G$ t" V9 o4 U) x9 @$ l4 f
  205.   /* Send WriteAddr low nibble address byte to write to */
    1 H3 N0 b/ J# F" C
  206.   SPI_FLASH_SendByte(WriteAddr & 0xFF);) r! D5 v# J3 V; _, n0 R  A( t
  207. ! M+ C) z# k6 a  Y4 }! g
  208.   /* while there is data to be written on the FLASH */7 |2 \7 ^+ J/ m3 Q" }
  209.   while (NumByteToWrite--)
    ! H6 @5 Q' B! \! W- W' t: K4 C
  210.   {
    ! w; B' f: E$ [+ Y
  211.     /* Send the current byte */
    2 |9 e0 @. i; L9 ]
  212.     SPI_FLASH_SendByte(*pBuffer);* [; X: ]) K! g( \, `, s
  213.     /* Point on the next byte to be written */$ V5 _/ m5 y; m
  214.     pBuffer++;" B7 w) m0 `9 R1 R
  215.   }2 z* y0 x0 @/ [: w0 g0 i, M

  216. % O* |2 x; l7 B$ c0 s1 w, Z  s6 W
  217.   /* Deselect the FLASH: Chip Select high */2 `+ }5 S/ T5 _: {+ a
  218.   SPI_FLASH_CS_HIGH();  C  q# ^3 F: C( B8 f4 `
  219. & T% m  s# B9 {. ?3 X/ a
  220.   /* Wait the end of Flash writing */" }) n+ Y, N/ ~0 L4 y6 O1 A
  221.   SPI_FLASH_WaitForWriteEnd();' W1 N) ?: m) q. ?) o
  222. }$ o* I3 z* a. j4 z+ _" C) k; m

  223. 0 v9 j1 i5 I; Z5 n  ^: t
  224. void SPI_FLASH_BufferWrite(u8* pBuffer, u32 WriteAddr, u16 NumByteToWrite)
      C5 P! ^# S3 W- F1 D) Z
  225. {
    - M* n* I7 P( R+ h1 H. k* V
  226.   u8 NumOfPage = 0, NumOfSingle = 0, Addr = 0, count = 0, temp = 0;; b& v1 _/ T  H& m: x, w

  227. 9 j. W7 S0 _% r; K
  228.   Addr = WriteAddr % SPI_FLASH_PageSize;
    / [' y$ d+ ^6 d6 r/ `- \
  229.   count = SPI_FLASH_PageSize - Addr;
    / r7 ?  f2 m/ @! N  I
  230.   NumOfPage =  NumByteToWrite / SPI_FLASH_PageSize;
    + F* J8 i2 _0 l# Q
  231.   NumOfSingle = NumByteToWrite % SPI_FLASH_PageSize;! I6 m5 j1 R/ N, _

  232. + h" f# B* }- K) I7 q, h- n
  233.   if (Addr == 0) /* WriteAddr is SPI_FLASH_PageSize aligned  */
    , b, n! C8 @2 h
  234.   {
    , O5 c6 m9 M4 q7 g
  235.     if (NumOfPage == 0) /* NumByteToWrite < SPI_FLASH_PageSize */% r/ z6 {8 A' N# V
  236.     {; |2 w6 Z. k& L, ^$ {( w
  237.       SPI_FLASH_PageWrite(pBuffer, WriteAddr, NumByteToWrite);
      |! J5 ?- n8 F# X
  238.     }( W1 q. D0 Y' J; g
  239.     else /* NumByteToWrite > SPI_FLASH_PageSize */
    ) g. v) m( |8 _9 \# s" z# P9 ~
  240.     {$ e% r: u) x2 b" e7 p- v# ~
  241.       while (NumOfPage--)
    " a" b. ~$ y+ ?8 B# i# L  U
  242.       {* b( Q# W( Q8 s
  243.         SPI_FLASH_PageWrite(pBuffer, WriteAddr, SPI_FLASH_PageSize);+ t: i% a7 p/ Y3 ]( x0 _% Y+ w
  244.         WriteAddr +=  SPI_FLASH_PageSize;$ @* A/ d0 R) y' m7 w- x$ @% R
  245.         pBuffer += SPI_FLASH_PageSize;
    # B# k& d0 k/ ~% F
  246.       }* l$ |& E  e6 H; l
  247. 7 x. d/ n0 z+ W6 P1 `' R9 C
  248.       SPI_FLASH_PageWrite(pBuffer, WriteAddr, NumOfSingle);- g- Y9 [0 g7 g% X  i0 p( Q# ~9 d& a
  249.     }
    . y* _$ m8 Y, S+ v  V7 r
  250.   }
    # K0 e* ]1 b/ n2 }% F5 n% z
  251.   else /* WriteAddr is not SPI_FLASH_PageSize aligned  */
    " [. _; }2 U/ l
  252.   {  F+ `% u% G) @
  253.     if (NumOfPage == 0) /* NumByteToWrite < SPI_FLASH_PageSize */) S3 W5 c6 j' R: F: t
  254.     {
    ( ^" c7 L! p; H( G1 \
  255.       if (NumOfSingle > count) /* (NumByteToWrite + WriteAddr) > SPI_FLASH_PageSize */
    $ g6 L, A7 [7 v- Q& E
  256.       {- Z- o6 @- O# m9 U5 p
  257.         temp = NumOfSingle - count;% r1 w* D* o6 k0 k1 u6 i

  258. ) u! V$ C' a, E9 E; [" u- P& |! }: K8 N
  259.         SPI_FLASH_PageWrite(pBuffer, WriteAddr, count);/ I/ C9 W) n0 ]
  260.         WriteAddr +=  count;
    0 v$ t2 p/ s! j8 P. J' p
  261.         pBuffer += count;
    2 K) _4 x7 `# }! D" G% L+ y/ M
  262. * _0 `4 W9 b$ q- |0 S
  263.         SPI_FLASH_PageWrite(pBuffer, WriteAddr, temp);
    $ w  d5 T1 @( i. e  x$ V
  264.       }1 n; R+ y5 S, W; J& z
  265.       else
    5 ], F6 C1 R4 ]3 n
  266.       {$ F( O1 ]' c/ m4 u; V# ^1 ?# J
  267.         SPI_FLASH_PageWrite(pBuffer, WriteAddr, NumByteToWrite);
    * H$ ^7 @  ^; I* G2 I
  268.       }" S8 L" t0 ~2 P" L
  269.     }
    ' B, s2 _7 p. j, y
  270.     else /* NumByteToWrite > SPI_FLASH_PageSize */" @$ N) R6 o+ o
  271.     {
    - P. a2 Z4 R) L! I
  272.       NumByteToWrite -= count;
    8 H% A, U5 |6 |4 o
  273.       NumOfPage =  NumByteToWrite / SPI_FLASH_PageSize;" T( \: G: {5 N( l3 r$ ^; R4 y
  274.       NumOfSingle = NumByteToWrite % SPI_FLASH_PageSize;, P( }8 F0 ~0 X" y- W: q  |0 q" ]; u
  275. ) C& }  {/ Z' x- g2 O! U0 b
  276.       SPI_FLASH_PageWrite(pBuffer, WriteAddr, count);
    ) ?  O9 P3 |1 D" n$ \! m6 ]: L: |
  277.       WriteAddr +=  count;
    5 f. S* P" F0 I' c, Z
  278.       pBuffer += count;! H2 ~! @/ |9 {- @: x6 A( o
  279. & ~5 s  }; u8 _
  280.       while (NumOfPage--)
    ' R0 a8 d# Q9 Q- V
  281.       {* Y. \4 B+ s( Z/ Z5 J" T
  282.         SPI_FLASH_PageWrite(pBuffer, WriteAddr, SPI_FLASH_PageSize);. s3 ^2 c7 T% A& Z: g7 Y* r
  283.         WriteAddr +=  SPI_FLASH_PageSize;
    $ _5 h# P7 r/ M  H6 y% }0 t1 V# j9 {2 j
  284.         pBuffer += SPI_FLASH_PageSize;' k% F1 S4 Q" i2 x, |( s: ?
  285.       }- {! u- M) v) K/ R2 h- }; m4 C
  286. ! v: T+ c3 j' I+ |* Z/ {6 d
  287.       if (NumOfSingle != 0)! ^% \& J) h+ B  n" I) P
  288.       {
    9 R$ w0 Q: w6 G! D5 {
  289.         SPI_FLASH_PageWrite(pBuffer, WriteAddr, NumOfSingle);
    6 W  Y- y4 U: y$ O+ }
  290.       }
    ) l  l8 [) v- U6 q9 m" V
  291.     }
    ; L! ]% Y# }6 k2 v9 e0 ~
  292.   }
    8 s, u$ |$ k( ~; \$ ?7 Z! O6 W) v; F
  293. }6 k0 q+ J5 ~  f7 v' t* C
  294. 3 b  E; E+ [9 X5 f/ {9 w2 Z
  295. void SPI_FLASH_BufferRead(u8* pBuffer, u32 ReadAddr, u16 NumByteToRead): s4 D8 e. A- X+ O6 {" u- u* ]
  296. {" O1 N- |" H) k1 \4 z
  297.   /* Select the FLASH: Chip Select low */
    / o) v! X/ q3 Y. i9 P" M
  298.   SPI_FLASH_CS_LOW();
    % U  l+ p( s& z5 R  p) U! X
  299. " ]$ |8 h# w4 e$ x! `
  300.   /* Send "Read from Memory " instruction */
    * K" E" X# g$ `/ R2 ~6 d! h
  301.   SPI_FLASH_SendByte(READ);
    3 i$ `5 j3 L+ x+ v/ O

  302. 8 R- @6 \' w$ o. m" k) D4 K% p
  303.   /* Send ReadAddr high nibble address byte to read from */
    # p/ P4 V5 |: L* E  Z
  304.   SPI_FLASH_SendByte((ReadAddr & 0xFF0000) >> 16);# q# Y8 \+ `7 t' J2 A, F
  305.   /* Send ReadAddr medium nibble address byte to read from */" `% l; q1 B) r* x
  306.   SPI_FLASH_SendByte((ReadAddr& 0xFF00) >> 8);/ {. d& Q( @: ]- C+ ~2 p6 m6 r
  307.   /* Send ReadAddr low nibble address byte to read from */+ |/ z6 v/ b; N
  308.   SPI_FLASH_SendByte(ReadAddr & 0xFF);
    ' [: h+ x9 B7 x% Z7 E  n  a6 H

  309. 4 y: m3 a$ y( P8 `  q$ D
  310.   while (NumByteToRead--) /* while there is data to be read */
    ' G0 w- \# A* n, `
  311.   {
    " u. K& @' Q5 r# M7 v% q
  312.     /* Read a byte from the FLASH */) [7 y+ J4 i- u4 g9 @
  313.     *pBuffer = SPI_FLASH_SendByte(Dummy_Byte);5 r! C: Z+ F: A
  314.     /* Point to the next location where the byte read will be saved */$ u$ t0 [& M5 q7 w/ `) [
  315.     pBuffer++;
    - i- M: |7 n3 u/ P, R  }
  316.   }# O, A4 T0 A: m

  317. ; ]8 \8 }7 H' V8 Z2 _
  318.   /* Deselect the FLASH: Chip Select high */
    & _$ ]) e# I9 T2 Q
  319.   SPI_FLASH_CS_HIGH();. P) z$ b6 y4 p- E4 z/ Y
  320. }
    ! [2 S3 O$ b( u! G+ ]1 u
  321. % a$ h% i0 w4 o1 B4 w' o
  322. u32 SPI_FLASH_ReadID(void)5 }- i: h& X0 T: ?( `0 K
  323. {: }' E+ R0 G( m: p9 g# A, f2 O7 @
  324.   u32 Temp = 0, Temp0 = 0, Temp1 = 0, Temp2 = 0;
    ! i% O" d( Y/ W
  325. 9 S. y$ b1 C; s0 ]
  326.   /* Select the FLASH: Chip Select low *// ~' p8 Q. e, [* `7 b; R- i
  327.   SPI_FLASH_CS_LOW();
    7 w+ S0 R& k% R; j: ]! @- Y. O: |
  328. 4 y1 t0 b5 j" q, L
  329.   /* Send "RDID " instruction */
    8 ~% J! x( J' v  N
  330.   SPI_FLASH_SendByte(0x9F);) r, n# l% U$ h; v" {( ~& y

  331. 4 J- ~+ f9 Q: `- F
  332.   /* Read a byte from the FLASH */' Q( C' O! u8 R
  333.   Temp0 = SPI_FLASH_SendByte(Dummy_Byte);: h& F# Q0 u" m1 a
  334. 6 a" z* i" X5 {7 P( t/ S
  335.   /* Read a byte from the FLASH */* t5 @& D* a' I/ _5 E. I1 _, s5 m8 J
  336.   Temp1 = SPI_FLASH_SendByte(Dummy_Byte);& T( p1 v1 [1 v1 i
  337. . g9 M: c- m: Y, s# w: y
  338.   /* Read a byte from the FLASH */
    + ?! V4 m. P9 U" b
  339.   Temp2 = SPI_FLASH_SendByte(Dummy_Byte);& H* S9 L2 U. F+ W; Y  Z# c! a7 _

  340. * z0 R" V, s1 I0 g* G7 u
  341.   /* Deselect the FLASH: Chip Select high */9 W% P( V8 `; y6 [' h! ?+ v0 D
  342.   SPI_FLASH_CS_HIGH();
    7 Q% v; L3 ~5 d- S- ^+ \! o

  343. 3 ^( E- t' ?, C/ K1 k/ m4 `
  344.   Temp = (Temp0 << 16) | (Temp1 << 8) | Temp2;+ Y6 C- S! _7 T" a1 ^& v' o
  345. 5 M  j) o& A6 f5 Q. f7 e
  346.   return Temp;# Z. m, i) d. g; E4 \
  347. }
    + G7 d/ U* y" c' F; j3 ?
  348. 1 F1 c- B! U. a( }* Y& f7 Y
  349. void SPI_FLASH_StartReadSequence(u32 ReadAddr)1 K1 ~7 r1 b) Q4 H' Z
  350. {/ \% Y/ P/ A0 x( K- v. N
  351.   /* Select the FLASH: Chip Select low */
    . a  Z! n2 k3 Q- }8 X+ }$ O3 v
  352.   SPI_FLASH_CS_LOW();# N% V0 e4 h) @7 f4 q+ H

  353. 7 w: G3 O$ E, v: d  N- c% E
  354.   /* Send "Read from Memory " instruction */
    - `3 i( r0 m& ^& G! n# n
  355.   SPI_FLASH_SendByte(READ);9 D4 L6 Z2 g9 u. m, x6 q

  356. 8 ?+ i, G9 ]! R5 G4 _* t0 I$ J; h
  357.   /* Send the 24-bit address of the address to read from -----------------------*/( z7 S  h- n  V+ v
  358.   /* Send ReadAddr high nibble address byte */
    $ x* s" @% O, r7 ]
  359.   SPI_FLASH_SendByte((ReadAddr & 0xFF0000) >> 16);
    ' w* Z& G6 o$ o) w
  360.   /* Send ReadAddr medium nibble address byte */
    + X  _( o+ |- v9 {# M) N! J' f- N4 a
  361.   SPI_FLASH_SendByte((ReadAddr& 0xFF00) >> 8);: s& G2 [4 m- L  S* U4 b
  362.   /* Send ReadAddr low nibble address byte */
    ( q' @! c9 {! Z! N( `, N9 P* D
  363.   SPI_FLASH_SendByte(ReadAddr & 0xFF);
    + y) S! B0 F5 {) K$ W% c  O9 ]
  364. }
      s! c. o3 u: j: ]! x

  365. 2 H2 E: N* h0 Y4 N' A
  366. u8 SPI_FLASH_ReadByte(void)
    " C. n. [: `6 @( }/ ~' |3 ~! M+ F
  367. {
    & u% H- V) m% K# Q* M4 y8 m
  368.   return (SPI_FLASH_SendByte(Dummy_Byte));3 `' Q8 a: {* y
  369. }: o! |: f1 {6 x1 N0 W7 Q" l

  370. 3 `' q7 F& D$ J  j4 B
  371. u8 SPI_FLASH_SendByte(u8 byte)
    ! ~- n2 G$ `9 y, ~/ L
  372. {$ C( ]8 K4 Q  j# q$ j. |
  373.   /* Loop while DR register in not emplty */
    6 B% t( U$ s8 g  b% [, C
  374.   while (SPI_I2S_GetFlagStatus(SPI1, SPI_I2S_FLAG_TXE) == RESET);
    ( T1 O& U9 q. z& h/ V4 a

  375. / D* c* L  J) Y
  376.   /* Send byte through the SPI1 peripheral */
    " h$ i/ Q! e( Y' m/ u( a4 B
  377.   SPI_I2S_SendData(SPI1, byte);" P, f5 {* t$ h2 D% l
  378. * x4 Q. u, D" t5 ]6 n
  379.   /* Wait to receive a byte */
    , H# ^, r; p+ p
  380.   while (SPI_I2S_GetFlagStatus(SPI1, SPI_I2S_FLAG_RXNE) == RESET);
    ' N( d+ G7 d& _7 Q3 i5 e3 h3 K

  381. ) [6 F( E2 d1 C
  382.   /* Return the byte read from the SPI bus */
    / }* y1 Y; m" i
  383.   return SPI_I2S_ReceiveData(SPI1);9 S1 f! M" l7 k
  384. }, j, Q9 C6 X+ p# _$ i
  385. * y2 p" k  y7 P4 }2 @6 A6 @7 X
  386. u16 SPI_FLASH_SendHalfWord(u16 HalfWord)
    + p( d( p1 R: {2 S7 O1 \7 b
  387. {6 L/ C9 |4 W0 a" x5 \8 L
  388.   /* Loop while DR register in not emplty */
    % [6 e+ E4 C* I6 n& h! r
  389.   while (SPI_I2S_GetFlagStatus(SPI1, SPI_I2S_FLAG_TXE) == RESET);. d8 U5 l( ~6 S% L0 V  b

  390. ) U* c4 b( b; \! c5 P: s! P3 l
  391.   /* Send Half Word through the SPI1 peripheral */7 T: v0 ^1 k% |5 R1 {( w
  392.   SPI_I2S_SendData(SPI1, HalfWord);; ?7 u$ ?% e0 g  F* ]$ C
  393. - I) E: |, \% ?) A' h5 e
  394.   /* Wait to receive a Half Word */
    $ ^% p7 F' m% Z; ]5 C
  395.   while (SPI_I2S_GetFlagStatus(SPI1, SPI_I2S_FLAG_RXNE) == RESET);/ m9 |! U1 b- W# X: \

  396. ) v- \- M9 D" l+ o9 ?0 S7 j
  397.   /* Return the Half Word read from the SPI bus */9 a$ D0 q6 B; w7 M1 Y$ m
  398.   return SPI_I2S_ReceiveData(SPI1);$ V) l. b+ l+ O7 C/ ?
  399. }2 h, ^* p& I' [! b

  400. & J# ^5 {0 N5 G9 A4 X* @
  401. void SPI_FLASH_WriteEnable(void): e' B  C% \# W( o; c- x+ o
  402. {1 p& u! V8 k- h! I( L# @9 J- {8 S3 Y
  403.   /* Select the FLASH: Chip Select low */3 H9 T) c; ^) N; q; s( `# B6 t
  404.   SPI_FLASH_CS_LOW();
    / S5 h+ j9 g9 m5 j9 W0 I; ^

  405. ( D: g0 J6 g8 s6 Q6 N
  406.   /* Send "Write Enable" instruction */
    2 a( p: b; U8 F4 v7 J" {6 c
  407.   SPI_FLASH_SendByte(WREN);
    2 W$ c$ h6 n, n  s/ g

  408. / C# w$ C8 W6 C) E
  409.   /* Deselect the FLASH: Chip Select high */
    ! ], c1 v9 M1 h( F2 ]- B8 }0 ^
  410.   SPI_FLASH_CS_HIGH();
    ' W3 n2 u4 y/ W4 T- O
  411. }5 [" W8 a! H- \- b! ^
  412. / {' j4 B9 {7 Q" S/ V5 D
  413. void SPI_FLASH_WaitForWriteEnd(void)' n' Y9 P. @+ Q1 X7 n
  414. {( P. n; z" u+ G* t
  415.   u8 FLASH_Status = 0;
    0 h0 }* h; E' W: \+ ~( J, }

  416. 7 m) _; P$ E0 e* N
  417.   /* Select the FLASH: Chip Select low */9 G6 l/ l! h# _+ H& Z! _3 W
  418.   SPI_FLASH_CS_LOW();+ E; X- }$ L! S+ I& x! m9 i- ]3 n
  419. % M  x4 H* E3 i' M' U, I
  420.   /* Send "Read Status Register" instruction */
    & t  Z" w, x$ T8 M8 Z8 |  Y
  421.   SPI_FLASH_SendByte(RDSR);
    % r9 i' W$ t: f3 f+ |0 N' Q

  422. - {& n  c( u0 i$ d: V
  423.   /* Loop as long as the memory is busy with a write cycle */4 {8 T6 }+ @) B/ g
  424.   do
    6 T: b1 V  F- s4 o
  425.   {5 K3 j$ v0 n! r
  426.     /* Send a dummy byte to generate the clock needed by the FLASH
    . ~( P8 ]2 T! D7 |+ P" Z! a
  427.     and put the value of the status register in FLASH_Status variable */
    ; i. _( ]9 u6 @% D
  428.     FLASH_Status = SPI_FLASH_SendByte(Dummy_Byte);
    ; |5 T/ i4 ]7 V7 n7 Q
  429. 3 E: A3 l2 L1 l' M5 H- r: R; K
  430.   }
    $ s; q( ]- \! V6 x
  431.   while ((FLASH_Status & WIP_Flag) == SET); /* Write in progress */2 Z* A/ k/ D6 T  s
  432. # s: E) E" [; y3 V, i
  433.   /* Deselect the FLASH: Chip Select high */& w, ~# B8 V+ P. o- i, h
  434.   SPI_FLASH_CS_HIGH();
    ; u+ j0 N* |$ W1 D3 i/ j
  435. }
    4 {6 P3 u) G% w# h9 \6 T) p/ s) Y9 I

  436. & A: z/ N" c. ^: N
  437. TestStatus Buffercmp(u8* pBuffer1, u8* pBuffer2, u16 BufferLength)' l& {! ^9 [1 Q/ @9 x
  438. {
    / n' P% B( f, ^% `9 x6 H
  439.   while (BufferLength--)
    - \, S) q- a  S& f1 B
  440.   {9 y7 s4 S8 u( i: L( `  v6 o: p  D* K& X
  441.     if (*pBuffer1 != *pBuffer2)
    - Z( L$ G% |2 f! H
  442.     {
    2 F( \- w4 L9 H& k
  443.       return FAILED;( m* }/ i. g9 _+ f
  444.     }
    * w/ f' m# c$ Y7 b# n3 ?
  445. 2 a5 M% H3 L! t  N' f
  446.     pBuffer1++;# s, N* t& D! n
  447.     pBuffer2++;
    5 x  O7 ]: W& u
  448.   }
    : `0 D3 d  Y" Q! V- D) s
  449. + w2 c) I$ g: P& Z* |2 |
  450.   return PASSED;
    7 {3 E3 D- ?: v, T: Z  @
  451. }) E: x; r$ B6 t% K8 R; F: G

  452. 9 v4 j' P1 O, f& D  d
  453. #endif; f2 v, y+ H# C7 d( x( S
  454. /******************* (C) COPYRIGHT 2008 STMicroelectronics *****END OF FILE****/- _' |: w* A6 J" {8 v' A
复制代码
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wolfgang 回答时间：2016-1-7 15:25:19
Dylan疾风闪电 发表于 2016-1-7 15:12
, l: B+ N( j; _9 h
@file /EXTI_Example.h( Z8 x3 Q" }4 X9 u% ?. a6 B9 Z
6 K( G# m& m: Q& `" j1 d
检测下降沿触发中断，不过似乎没有处理按键抖动的问题，会出现释放按键后，有闪亮的情况.....
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