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ie8及以上

STM32F4(BUZZ)

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XinLiYF 发布时间：2018-3-9 20:55
STM32F4(BUZZ)
GitHub仓库：http://github.com/XinLiGitHub/STM32F4xx_BUZZ_Example/ V5 f1 ?* M# {, x! X+ W
PS：博文不再更新，后续更新会在GitHub仓库进行。
( |' l6 Z2 u8 p( A& S; s  _' Q
, \! o+ {/ x4 u# H0 h/ K       在实际的项目开发过程中，常常会遇到硬件电路的修改，然后修改的部分就需要修改驱动程序。想这样需求该来该去是程序员们最烦闷的事情（重复劳动痛不欲生啊~）。为了避免或减少重复劳动，就需要在程序的架构上下功夫。接下来以最常见的无源蜂鸣器驱动程序为例，进行程序结构设计。; s9 z" k3 M& D5 e: j$ z
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% a4 q8 x8 |9 }$ x2 t4 J( ~% }1，开发环境9 K: J. x4 c, ^. [
3 V5 b# ]2 ?5 M
     1，固件库：STM32F4xx_DSP_StdPeriph_Lib_V1.8.0
: s8 v! `( @" H. Y5 L4 [     2，编译器：ARMCC V5.060 ?6 E8 m" ^% g4 E7 D+ U# a
     3，IDE：Keil uVision5- g8 J4 B4 c* K3 j5 X
     4，操作系统：Windows 10 专业版
0 j  U7 F6 ^; t  ^$ D/ a  i% d: U# R/ i+ a8 R
2，程序源码
2 T0 Z8 C1 @  Z      BUZZ.h文件
9 f. ]) o0 R9 P* i7 u4 ?
  1. /**, m, E* q$ L7 A0 D
  2.   ******************************************************************************
    * J+ o' T  f& J+ R- u6 f! ^
  3.   * @file    BUZZ.h6 o" h% p, \2 s; `# c
  4.   * @author  XinLi1 Z! g- O. l% t' K# C8 o% \
  5.   * @version v1.0
    3 n8 f5 ^" w& l
  6.   * @date    24-October-2017
    " I4 V" K1 ~3 k: I
  7.   * @brief   Header file for BUZZ.c module.
    0 L# \" V% c7 v$ x" |
  8.   ******************************************************************************
    3 N" o, A- X7 S' o% {( _) E/ J
  9.   * @attention
    ; _3 S4 u% p2 [
  10.   *
    # \; z8 _% [: j- }7 s* H& ?
  11.   * <h2><center>Copyright © 2017 XinLi</center></h2>6 r7 I& w. Z3 l" S: ]& m
  12.   *
    ) ?5 ?9 M* Q" d; ~; Q8 ?/ s- e1 n
  13.   * This program is free software: you can redistribute it and/or modify
    2 X/ z# s' C' J9 l# H
  14.   * it under the terms of the GNU General Public License as published by3 I! W" s8 M. J
  15.   * the Free Software Foundation, either version 3 of the License, or
    7 n+ R4 j  M; `
  16.   * (at your option) any later version.# b: @+ n0 g. R7 u' b; E( ]
  17.   *& z+ a+ k! m; j/ a8 r- V
  18.   * This program is distributed in the hope that it will be useful,% e# l/ ?2 ?$ N# D. l
  19.   * but WITHOUT ANY WARRANTY; without even the implied warranty of5 [. @% {2 F' l
  20.   * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the" V9 N( c7 G& G% z4 @, Q
  21.   * GNU General Public License for more details.6 k  D4 f; ]  L) E' M
  22.   *
    " Q! |. g& p& S! o8 n8 V, w8 G
  23.   * You should have received a copy of the GNU General Public License/ A7 }7 R/ Q( k$ q9 j9 {
  24.   * along with this program.  If not, see <http://www.gnu.org/licenses/>.' y* P2 |4 m0 u/ n
  25.   *; |' s; A9 R% E9 e( ]1 B
  26.   ******************************************************************************
    4 j: V5 k- E" f5 Y  [4 T- K# }
  27.   */
    8 D" Y8 w# Q6 x5 f& r+ L' t
  28. 5 C+ r) d7 Z) y7 @8 m
  29. #ifndef __BUZZ_H
    $ Q( Z5 ?$ U+ D' J. B
  30. #define __BUZZ_H7 H* L7 m' [- G& F6 F  m

  31. 4 Y# k" Y& S: c6 K' \4 Q' S- Z* ~1 {
  32. #ifdef __cplusplus3 O( l' _; ^2 e% Z. P
  33. extern "C" {
    # k5 P, E! L3 v8 I
  34. #endif
    " `8 \+ w7 l9 t# P7 A5 K

  35. 4 \: Q, B6 W/ r% ~1 q4 G
  36. /* Header includes -----------------------------------------------------------*/
      [/ p8 v3 w; P9 {: V- Z
  37. #include "stm32f4xx.h"4 |5 N$ n$ I5 b7 o( \. ]8 _* y
  38. ) p3 q6 W1 R# d0 z- V' L. \5 C
  39. /* Macro definitions ---------------------------------------------------------*/
    9 q8 C7 X4 z  q
  40. #define BUZZ_RCC_AHB1Periph_GPIO         RCC_AHB1Periph_GPIOB
    3 S' T* Y7 c2 o% t$ K
  41. #define BUZZ_GPIO                        GPIOB
    6 o' ?8 J! z6 H
  42. #define BUZZ_GPIO_Pin                    GPIO_Pin_8* I2 Z" ?! K5 ^+ h+ u

  43. 9 n9 }9 N6 ^. P* D+ G/ F
  44. #define BUZZ_GPIO_PinSource              GPIO_PinSource8
      O( Y4 i: U1 i: u
  45. #define BUZZ_GPIO_AF_TIM                 GPIO_AF_TIM4
    & Y  i3 J& [. ~+ Z6 C

  46. # w2 H+ r' U( P( r2 N, L' K
  47. #define BUZZ_RCC_APB1Periph_TIM          RCC_APB1Periph_TIM4
    : [3 \; o  f* }* r2 P$ s
  48. #define BUZZ_TIM                         TIM4
    " _; N2 i1 Q2 m1 n8 o1 q8 t8 F. S' G

  49. 1 i0 m3 x* G9 S* S6 c( r1 @
  50. #define BUZZ_TIM_Prescaler               (83)  /*!< Clock divided to 1MHz. */
    3 Y6 i# T* r5 X" d
  51. #define BUZZ_TIM_Period                  (249) /*!< 250us timer interrupt. */7 Z8 o4 A  [2 J5 z
  52. 1 E; i; i, ~9 ~3 Q; l( G" F
  53. #define BUZZ_TIM_OCPolarity              TIM_OCPolarity_High' |+ `; d. v$ K
  54. . a# x0 l- j. f+ c
  55. #define BUZZ_TIM_OCInit                  TIM_OC3Init; ^8 O; q, O% `/ ~( s
  56. #define BUZZ_TIM_OCPreloadConfig         TIM_OC3PreloadConfig$ `9 z- h3 ?: Y, e7 [9 _, A; \% Z
  57. % g5 ?" F8 K2 t% K$ O2 F. I- W
  58. #define BUZZ_TIM_SetCompare              TIM_SetCompare3+ o, q% k  q: [, ^  X$ `
  59. % z% S/ @* e2 t$ x! g2 @
  60. #define BUZZ_TIM_IRQn                    TIM4_IRQn. v4 K! w* g2 E/ K
  61. #define BUZZ_TIM_IRQHandler              TIM4_IRQHandler1 ]* [* K% ^, o, s6 c2 s3 m
  62. #define BUZZ_TIM_IRQ_PreemptionPriority  (0)
    ' Q2 V% ?# x6 J
  63. #define BUZZ_TIM_IRQ_SubPriority         (0)
    7 K1 j2 q/ M6 G1 l
  64. 5 X! o6 a, h" I6 k( j# a: N
  65. /* Type definitions ----------------------------------------------------------*/
      F( S$ X2 _- _" O& r  K1 B/ n
  66. typedef enum' g$ f  Z# x! j% T7 l* d& ]
  67. {: E0 x2 Z- w+ U1 j
  68.   BUZZ_Off     = 0,
    : O9 t9 Y. C- b, Z6 h2 H8 O3 b8 Z, U
  69.   BUZZ_Ring    = 1,
    3 v- j& I: w# t& h: C1 ?
  70.   BUZZ_Drip    = 2,8 V, X  y* o+ C- v. o& Y
  71.   BUZZ_Warning = 3,* K. X' C/ c2 x
  72.   BUZZ_Danger  = 4" f4 Y9 l/ [% h5 J3 F
  73. }BUZZ_Status;
    ( z$ l' ~; t1 o/ W6 }2 l7 t3 I1 p
  74. 9 Q- B; g7 @" C- v% |; ?1 j$ q
  75. /* Variable declarations -----------------------------------------------------*/& m, J/ z- L8 m7 U! U# B* t9 _
  76. /* Variable definitions ------------------------------------------------------*/
    4 o. ~; b: k7 ?1 y6 J/ ?
  77. /* Function declarations -----------------------------------------------------*/" H# f# s' T2 p; r: ]4 o
  78. void BUZZ_SetStatus(BUZZ_Status status);( u' F3 B6 Q0 a- |# h
  79. BUZZ_Status BUZZ_GetStatus(void);
    9 m9 M) r$ M! L1 _6 c

  80. " }( I1 W& e+ g7 U( A( w# d
  81. /* Function definitions ------------------------------------------------------*/
    3 A& v  X- H: m/ c. d& B
  82. 9 T0 X! X3 w4 R' e7 m: @
  83. #ifdef __cplusplus
    5 ~8 C# R' K* t+ B. Y, z% O* N
  84. }$ T7 K$ f, h6 E" e4 |. A$ \
  85. #endif
    . b8 o* v7 `8 \8 T2 M
  86. 7 b( w! }$ E+ }: I4 j
  87. #endif /* __BUZZ_H */
    6 c. ]  U6 U; G0 I/ S. @
复制代码

# j5 y: X. R/ \      BUZZ.c文件; o/ y3 q  Y  _! L1 J8 m4 ]
  1. /**
    3 ^2 o) C$ s3 ~6 y7 l( l  {* ~
  2.   ******************************************************************************
    * u8 Z) B2 m3 h- X: y. G) P, [: U5 a# \
  3.   * @file    BUZZ.c
    . ~! a' B: V/ u* T
  4.   * @author  XinLi2 p6 v5 E$ O# m8 \6 ?) \! r. b
  5.   * @version v1.0
    4 Y9 o: ?  x4 R9 n5 ?8 c
  6.   * @date    24-October-2017
    6 z6 _0 F* A8 o% Q5 g% x, u
  7.   * @brief   BUZZ module driver.
    6 e  }! t( k+ V1 e" M( }
  8.   ******************************************************************************
    2 _/ O. @& F5 I4 h
  9.   * @attention
    " T8 x5 e+ E, A% H
  10.   *
    . w  @: U) W( Q# g/ V% x  j
  11.   * <h2><center>Copyright © 2017 XinLi</center></h2>
    6 ]. L, [/ A; X' w
  12.   *
    + v+ H4 J1 G% Q- b
  13.   * This program is free software: you can redistribute it and/or modify' @' L9 z3 H' s7 o' Q* u; z
  14.   * it under the terms of the GNU General Public License as published by  b9 I: O# {" l0 s
  15.   * the Free Software Foundation, either version 3 of the License, or( E$ j2 a# l4 c7 z, h7 g% w
  16.   * (at your option) any later version.  [5 ~4 u" H2 P+ R3 s
  17.   *8 r7 g+ G3 v4 V$ h
  18.   * This program is distributed in the hope that it will be useful,
    / e+ F" }7 B& Q$ w4 `
  19.   * but WITHOUT ANY WARRANTY; without even the implied warranty of# E# n5 G1 I4 B" Q* ?' s: t
  20.   * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    : L1 Q2 T/ o5 N8 A; @
  21.   * GNU General Public License for more details.
    0 Y: E4 Y7 _" s% s. a8 ~" A" v
  22.   *; J1 {/ Y+ e; M2 t4 K8 |
  23.   * You should have received a copy of the GNU General Public License. z& [2 F# c2 q- R+ y" T2 K
  24.   * along with this program.  If not, see <http://www.gnu.org/licenses/>.
      t0 _+ l  o8 {7 N5 A) O6 q
  25.   *3 H7 m6 F# J9 K
  26.   ******************************************************************************4 m2 R1 z4 }/ z2 z
  27.   */) n* |1 w1 W8 r' ^& p( y
  28. 3 ]1 o; i/ v/ ]- t- G
  29. /* Header includes -----------------------------------------------------------*/; e3 ]4 g1 C  t4 N! M; ^
  30. #include "BUZZ.h"& e, k5 B0 Q5 [% S5 n! ]
  31. #include <stdbool.h>5 Y; K* _, ^4 U  y0 r% A
  32. ( L; W4 G. j" _, w( e
  33. /* Macro definitions ---------------------------------------------------------*/4 ]9 r  ^% l3 I- p/ `
  34. /* Type definitions ----------------------------------------------------------*/
    $ d  H+ I$ e& j) l
  35. /* Variable declarations -----------------------------------------------------*/
    * s9 i2 i+ O6 m3 ]9 q- H0 c
  36. /* Variable definitions ------------------------------------------------------*/  M" |9 A: q  P* K* r' N5 a
  37. static __IO BUZZ_Status buzzStatus = BUZZ_Off;! g. U3 ]: V) V' Z7 E9 @
  38. static __IO int         buzzCount  = 0;( I. L5 H# ]( C5 ?

  39. 8 z  Z4 x  \- c
  40. /* Function declarations -----------------------------------------------------*/
    - P  X- g$ l5 }
  41. static void BUZZ_PwmInit(void);: K3 c, A. u# w& T8 S# j
  42. static void BUZZ_NvicInit(void);
    ) G4 z% m9 _' R3 V
  43. static void BUZZ_Init(void);, g1 E# \9 a- X) `

  44. 0 U9 X, D! r- U  G" U4 |( Y& S
  45. /* Function definitions ------------------------------------------------------*/
      u. A+ e( t& e( Z8 I6 n
  46. # \. I) `5 S' J4 c
  47. /**1 U+ t$ S) h) v$ b3 V9 L
  48.   * @brief  Buzz pwm initializes.
    ! U! z" a) @' @, p9 @* ^
  49.   * @param  None.
      q; l) l/ J% S% x" k5 Q
  50.   * @return None.7 Q$ c9 c; C+ f  b' k
  51.   */0 @1 v; f/ ?! y" Y4 i' a- |
  52. static void BUZZ_PwmInit(void)
    # Z" O6 C  _7 ~9 Q8 y
  53. {
    ( R* z  j* q, V2 ?) f% c
  54.   GPIO_InitTypeDef        GPIO_InitStructure    = {0};" L6 o+ S- ]% K  t$ J
  55.   TIM_TimeBaseInitTypeDef TIM_TimeBaseStructure = {0};
    : z- P9 ]* [; w2 [- _
  56.   TIM_OCInitTypeDef       TIM_OCInitStructure   = {0};
    ( j0 Z5 _! W( Q6 W! O$ g9 U) @9 a
  57.   
    4 `! @5 C, ^5 w# [9 U# \
  58.   RCC_AHB1PeriphClockCmd(BUZZ_RCC_AHB1Periph_GPIO, ENABLE);
      \, E$ n, ~2 L8 c7 ?/ h
  59.   RCC_APB1PeriphClockCmd(BUZZ_RCC_APB1Periph_TIM, ENABLE);7 U) \3 K$ \$ U7 [3 F- `; Q
  60.   & \, x0 q8 ~$ Y: R
  61.   GPIO_InitStructure.GPIO_Pin   = BUZZ_GPIO_Pin;
    3 F0 ]  Q5 g2 A1 `" y, L
  62.   GPIO_InitStructure.GPIO_Mode  = GPIO_Mode_AF;
    0 @' O# X+ A7 T0 m
  63.   GPIO_InitStructure.GPIO_Speed = GPIO_Speed_100MHz;' j3 C9 z( h4 \
  64.   GPIO_InitStructure.GPIO_OType = GPIO_OType_PP;7 O' n  C; k/ ^' _: P6 m
  65.   GPIO_InitStructure.GPIO_PuPd  = GPIO_PuPd_UP;9 E( q8 ~" T* w1 d) |
  66.   GPIO_Init(BUZZ_GPIO, &GPIO_InitStructure);; D- V3 a) Q* z) n& t6 _! X4 p& a; P
  67.   
    3 w( a% P/ M  X, |3 w6 ~/ J/ f& A
  68.   GPIO_PinAFConfig(BUZZ_GPIO, BUZZ_GPIO_PinSource, BUZZ_GPIO_AF_TIM);; @% `5 M( E# _
  69.   
    + ]. Q7 Q- |( e" F& F
  70.   TIM_TimeBaseStructure.TIM_Prescaler     = BUZZ_TIM_Prescaler;6 p( }* u5 C! c% S% H7 c
  71.   TIM_TimeBaseStructure.TIM_CounterMode   = TIM_CounterMode_Up;
    - e. V3 h% W1 ~' Q/ S* z
  72.   TIM_TimeBaseStructure.TIM_Period        = BUZZ_TIM_Period;
    - E& g* v" L0 }6 J, ]6 n$ P4 \6 X
  73.   TIM_TimeBaseStructure.TIM_ClockDivision = TIM_CKD_DIV1;) |5 {- z+ i! g0 D. x6 K" [3 [
  74.   TIM_TimeBaseInit(BUZZ_TIM, &TIM_TimeBaseStructure);
    - f' o0 B9 y6 H& z6 k
  75.   
    5 M, D1 w+ C0 h: S& ?
  76.   TIM_OCInitStructure.TIM_OCMode      = TIM_OCMode_PWM1;: j! L0 [% l( F1 c8 ~0 f/ C( |
  77.   TIM_OCInitStructure.TIM_OutputState = TIM_OutputState_Enable;
    % q, S1 |6 m5 c! ~
  78.   TIM_OCInitStructure.TIM_Pulse       = 0;2 [) |5 t. @" D0 T" c+ c  L% w
  79.   TIM_OCInitStructure.TIM_OCPolarity  = BUZZ_TIM_OCPolarity;
    4 r8 W; l6 c# J, G+ x, w
  80.   BUZZ_TIM_OCInit(BUZZ_TIM, &TIM_OCInitStructure);
    / a! W8 S+ [- G7 Z/ T
  81.   " L& A/ T( A; v
  82.   BUZZ_TIM_OCPreloadConfig(BUZZ_TIM, TIM_OCPreload_Enable);
    ) n  U" I) T  z0 M3 L, R2 J
  83.   TIM_ARRPreloadConfig(BUZZ_TIM, ENABLE);. O4 I& `+ q+ h1 C
  84.   TIM_ITConfig(BUZZ_TIM, TIM_IT_Update, ENABLE);8 b; n( d0 s  T/ v" x4 a2 _6 \
  85.   TIM_Cmd(BUZZ_TIM, ENABLE);
    4 Z) A  N4 @8 g9 y/ \! v& d
  86. }& d. g3 a0 K8 M4 r5 j

  87. , Q* d* u* C% [% X" E7 H. i5 j; ~
  88. /**/ X' X, L* H; H( ^: z
  89.   * @brief  Buzz nvic initializes.
    / l# T& P9 B; r. {: j2 Q' s
  90.   * @param  None.7 e. [6 U, q& A+ a$ K
  91.   * @return None.
    , r# K  P8 v, j7 t. m0 `( B+ h
  92.   */& i! H' A, ]. M
  93. static void BUZZ_NvicInit(void)9 f5 v5 L+ q" H' c
  94. {% j7 G& P7 z9 g) ~$ J, s6 y/ k# K
  95.   NVIC_InitTypeDef NVIC_InitStructure = {0};/ `$ `8 _0 @) N/ E7 F7 X* y
  96.   
    , S: o  j) a( e/ n% H
  97.   NVIC_InitStructure.NVIC_IRQChannel                   = BUZZ_TIM_IRQn;
    - w( ~5 @1 e! Z9 `0 X
  98.   NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = BUZZ_TIM_IRQ_PreemptionPriority;
    ) {7 \! ^) Q3 ?2 a( y8 t
  99.   NVIC_InitStructure.NVIC_IRQChannelSubPriority        = BUZZ_TIM_IRQ_SubPriority;
    % F8 j$ S2 L- N4 j( D
  100.   NVIC_InitStructure.NVIC_IRQChannelCmd                = ENABLE;
    - w  r  `$ v( @3 s* \
  101.   NVIC_Init(&NVIC_InitStructure);
    9 [9 O! K1 U- x1 B! t
  102. }
    7 I: S% _0 Y" o# ]0 m

  103. 6 M: m% Y! P" _
  104. /**) [5 D  ~* w) J3 Z; Y
  105.   * @brief  Buzz initializes.8 S, p! `4 D0 e6 o" N  }
  106.   * @param  None.: a8 [; g4 k1 ?: y) c6 ?: ~
  107.   * @return None.
    + ?7 _* x3 H  w
  108.   */; E6 R! z$ r8 e% P/ A6 K9 O$ T
  109. static void BUZZ_Init(void)6 Y9 h) ]2 Q7 \
  110. {% i3 d% x" H$ W$ a: o/ z1 J
  111.   static bool init_flag = false;
    $ ^7 [2 J# ^/ g; n
  112.   
    0 N9 [+ m2 P8 ^* G7 O6 u
  113.   if(init_flag == false)2 s8 J: R# ~5 c! {% m. e/ m. g1 d+ U
  114.   {1 K2 H" E' t: y
  115.     init_flag = true;* A9 ~. ^4 z3 F7 }. [
  116.     1 b, k- C) M" j- l: P
  117.     BUZZ_PwmInit();/ |7 R( x/ c! |8 |5 e+ w
  118.     BUZZ_NvicInit();
    " i6 x9 w9 B2 K9 }: d* y' l$ p  d
  119.   }0 W2 x% a$ s3 f0 `* y8 ?
  120. }
    3 Y# Q( u$ d* c& i8 O2 z

  121. ( n; s2 ~5 X( \
  122. /**1 B5 J( c- ~% U1 S
  123.   * @brief  Set buzz status.: e: \: X5 f' x4 J+ G: I
  124.   * @param  [in] status: Buzz status.
    ( U4 {  d5 `/ U; V
  125.   * @return None.. t* @9 V) E' J- z1 {
  126.   */0 p! d; a8 ?3 [; I) H3 `) O% a2 b
  127. void BUZZ_SetStatus(BUZZ_Status status)2 q. a1 D* N+ @9 y, X
  128. {1 K8 i! ]; k! L! f* l9 R* [, C! a
  129.   if(status != buzzStatus)
    8 z* G* |) d1 x$ ^, |
  130.   {
    $ I: N0 k1 e* Z  [, R$ ^8 a) m1 m
  131.     buzzStatus = status;' d( L& O+ F; R% `! E
  132.     buzzCount  = 0;, C" D: A$ d* i% A" e
  133.     BUZZ_Init();7 c$ j$ w% m4 |4 v8 T
  134.   }" ]' E! G; C6 Q& ^0 |
  135. }
    * Y; M2 G: f/ }

  136. 4 N$ p# {3 `' F5 d5 [( {+ T- [
  137. /**' s* e- ]  g  B5 o" C
  138.   * @brief  Get buzz status.
    4 ]' q5 o1 D3 N3 [
  139.   * @param  None.0 ?9 w$ }$ U0 L7 J
  140.   * @return Buzz status.
    * u8 D2 \! j' ?6 p
  141.   */
    / q. p$ g/ q4 l
  142. BUZZ_Status BUZZ_GetStatus(void), ~; R4 ]9 }5 U, z, J" }! [
  143. {
    6 W6 z! u- @! P9 U) J5 S$ D, @/ _
  144.   return buzzStatus;2 W" G0 [1 ?7 Q& B* X  o% l2 ~
  145. }8 p' C4 N3 ^2 u9 _

  146. 4 V& N6 C' H0 ^. W+ E! \& ]
  147. /**
      M8 d; _* W5 P# Y
  148.   * @brief  This function handles TIM Handler.- x: G! J/ i2 Z/ o/ p
  149.   * @param  None.
    8 Q. W$ I3 f' G
  150.   * @return None.
    + P/ L6 K2 a: e
  151.   */
    ; G2 o) t3 m: X; u/ ~: v( E
  152. void BUZZ_TIM_IRQHandler(void)$ S( w) E- h! A9 d$ [& y
  153. {2 s) m( J# y/ c: D
  154.   if(TIM_GetITStatus(BUZZ_TIM, TIM_IT_Update) != RESET)1 m8 @. ~; F1 L
  155.   {
    : |/ _, t7 q2 x4 [
  156.     TIM_ClearITPendingBit(BUZZ_TIM, TIM_IT_Update);) ~( W( b- `4 ~. |$ r! ^* i% F
  157.     " N7 c1 z/ {$ c7 ]  h& U3 S6 j
  158.     if(buzzStatus == BUZZ_Off): W1 c& {  ?9 V. |- F! {+ {( z3 r5 h
  159.     {6 O/ O0 M+ e; M! z2 x
  160.       buzzCount = 0;$ [& y! Y; v+ h$ w* X
  161.       BUZZ_TIM_SetCompare(BUZZ_TIM, 0);
    , S3 t* \+ B5 `
  162.     }4 u/ I3 P3 _6 S% w
  163.     else if(buzzStatus == BUZZ_Ring)9 r: O+ |( {$ A3 ~3 `# W3 B
  164.     {2 x6 G  E: c8 p
  165.       buzzCount = 0;. m  B  ?0 }( I7 U, t; l
  166.       BUZZ_TIM_SetCompare(BUZZ_TIM, (BUZZ_TIM_Period + 1) / 2);# t- r" Y9 r- V8 m3 _- q9 d
  167.     }
    * X5 v  H3 B2 @
  168.     else if(buzzStatus == BUZZ_Drip)
    + T; e( h/ w, I# R) k/ H, z' Z$ z" S
  169.     {# U7 T6 r; B5 K/ M# o1 W; {6 Q
  170.       if(buzzCount > 1999)' {. Q( s* D0 m. J
  171.       {
    4 R# [: B: @$ P" W" i/ Y9 `( Y
  172.         if(buzzCount > 3999)  H6 ^8 q& G% K9 k
  173.         {
    * @/ h+ l" t, q. f+ [  u; w& v
  174.           buzzCount  = 0;
    ' z" x; N. x; q+ q
  175.           buzzStatus = BUZZ_Off;, _8 r+ F2 y2 ~
  176.           BUZZ_TIM_SetCompare(BUZZ_TIM, 0);; E8 t; P$ T4 j& J: [6 v0 Q+ o$ M* F
  177.         }3 h% ^. r4 r6 A9 x, ~+ w
  178.         else
    6 I9 L5 o: W6 U- i% e4 n
  179.         {
    : |) H: O8 |% l$ ?1 U1 r. m5 R
  180.           buzzCount++;2 h# x4 v7 u1 R% y$ l) r; W- O' [
  181.           BUZZ_TIM_SetCompare(BUZZ_TIM, 0);
    % ~* {/ J3 N5 h7 z/ J7 y0 u. H7 S
  182.         }' M! h9 E4 @" ]
  183.       }* U7 f* l# O  O: Q
  184.       else
    $ ~* Y* \! i: K$ K5 t+ p- Q9 i
  185.       {$ C: i; E0 r9 {. B; ]8 H
  186.         buzzCount++;. r1 H6 M- x/ G4 B8 N9 g+ n
  187.         BUZZ_TIM_SetCompare(BUZZ_TIM, (BUZZ_TIM_Period + 1) / 2);
    8 Q+ t) s/ x8 K5 D2 @5 z# w! [
  188.       }
    0 [+ O; T5 j* u6 h& j
  189.     }- s; d, i8 I) w  M1 M3 x6 Y- J
  190.     else if(buzzStatus == BUZZ_Warning)! K4 i# z1 a- ^
  191.     {
    * O$ r: A5 M: A# v& _3 b
  192.       if(buzzCount > 1999)2 {8 p7 J5 r0 s; c" j6 r
  193.       {" T$ \% I/ ~' L0 v" d. m+ O
  194.         if(buzzCount > 3999): j8 G2 ?% L1 |* z* g
  195.         {( J8 h( x8 Q# A: g9 \
  196.           buzzCount = 0;
    ' Z; w' C+ U2 b
  197.           BUZZ_TIM_SetCompare(BUZZ_TIM, (BUZZ_TIM_Period + 1) / 2);
    ) |$ S8 p' V$ P; e5 k# n
  198.         }
    ( Y: {, U' q6 b! ]  \' [
  199.         else8 z  l& t; ?, D/ N" y
  200.         {; }1 P1 a8 ?/ @( W  [4 G9 Z
  201.           buzzCount++;, H9 X  t9 W, D3 G# T
  202.           BUZZ_TIM_SetCompare(BUZZ_TIM, 0);
    ; d" W4 t. N" X6 J8 _+ D% w! p
  203.         }( ~8 j+ D5 S4 b- b7 [* s! H
  204.       }0 x. |2 b+ t9 M/ f0 Z4 `; X
  205.       else1 G8 t; ^; {5 e$ Z
  206.       {* h/ ?6 l' d! D# ]3 \
  207.         buzzCount++;
    # ~+ k' w+ L) O; ]# m
  208.         BUZZ_TIM_SetCompare(BUZZ_TIM, (BUZZ_TIM_Period + 1) / 2);
    3 e6 D& v# n- ^  w
  209.       }1 h; v: p9 ]0 E# S
  210.     }
    / g: O  r& U- @' I2 [  w/ H
  211.     else
    ( ~+ g8 ]8 q( R7 _3 H3 p
  212.     {) D% x! E- q! h- `0 ~
  213.       if(buzzCount > 999)6 y- o8 s8 [: f+ E# o5 l
  214.       {( S  H( D5 h& a& ~/ c' M4 W' u
  215.         if(buzzCount > 1999)3 K. r$ X. Z- ]% i; w
  216.         {
    ) k# j* N8 U$ m! ~+ f, l
  217.           buzzCount = 0;
      \: N) w, M  F0 p6 }
  218.           BUZZ_TIM_SetCompare(BUZZ_TIM, (BUZZ_TIM_Period + 1) / 2);
    ! v  [2 G' I' Q) O: A1 H* `& Z/ H
  219.         }# G1 E9 @. c* D8 m' x* Z
  220.         else
    6 A0 u& A! o2 N
  221.         {8 P( `8 \- ?2 j! D6 k" j
  222.           buzzCount++;5 y' d* g7 L+ B' C: g) H
  223.           BUZZ_TIM_SetCompare(BUZZ_TIM, 0);
    5 [! {/ k, B- X; T
  224.         }
    % b9 [) h7 e1 |, E! @% s
  225.       }
    7 x8 w: u2 [2 w* k7 J6 }2 _" m5 I
  226.       else
    8 Q5 ^0 g+ ]* c4 k4 p& q! ^) z
  227.       {
    : x. ?1 c3 N" g/ f
  228.         buzzCount++;
    7 f/ S& b7 W! ]* I' F
  229.         BUZZ_TIM_SetCompare(BUZZ_TIM, (BUZZ_TIM_Period + 1) / 2);
    " s5 x; \5 J2 [9 x0 V; m+ N6 _
  230.       }$ Q0 Y' p/ W7 j( A* `: Z5 J  Y
  231.     }
    5 [7 |, F- |& L, C+ P! `
  232.   }$ [3 ^% D0 s) z2 `# N4 {# H
  233. }
    % x2 L# K5 i) W0 _/ q% w" t6 `
复制代码
$ T* C/ I/ Y" L% D+ S
      main.c文件
+ m. j  C1 @5 Q7 Y. s* K
  1. /**
    ! a+ ?9 ]# q  Y  C
  2.   ******************************************************************************
    , @5 R9 h2 U8 {" q# t$ h
  3.   * @file    main.c
    ! w5 O# n' t4 y- L: _) h" X
  4.   * @author  XinLi  u; H2 z- `# c, h- V/ M0 B7 j& s% E
  5.   * @version v1.0
    + P  N; H1 ?, x% a& m$ e% C( R
  6.   * @date    24-October-2017% `/ q& t' c9 l* @* [1 W
  7.   * @brief   Main program body.; u2 V- K% Z+ B- ?; o5 Z  x
  8.   ******************************************************************************
    9 ^+ x  y2 a: j3 R4 P
  9.   * @attention0 m: y% i) J/ d# |4 O( _! c0 _
  10.   *' z" k' F8 c; p4 a: l% F
  11.   * <h2><center>Copyright © 2017 XinLi</center></h2>
    ( [$ n+ K1 |+ z+ C3 R3 m$ P& a
  12.   *
    # u& o$ o3 f; F) S3 [5 m. P
  13.   * This program is free software: you can redistribute it and/or modify
    # V/ {( W' N0 n
  14.   * it under the terms of the GNU General Public License as published by
    + _& \8 p/ I7 V6 t- i8 z0 ^
  15.   * the Free Software Foundation, either version 3 of the License, or
    / G1 x6 V, Z1 ^% ?
  16.   * (at your option) any later version.
    # j* A% w. q2 T
  17.   *
    1 [: k( H% b) k; @) {4 ~
  18.   * This program is distributed in the hope that it will be useful,
    : j. s) `4 Q& F( S( |& R
  19.   * but WITHOUT ANY WARRANTY; without even the implied warranty of
    ) Z  Z+ `* X4 t0 N
  20.   * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    : Z1 @" _. ]" U) ?0 ?2 z
  21.   * GNU General Public License for more details.
    ( Z  ~/ Z8 U: O+ ?4 L
  22.   *
    : ~" B* h% W/ m, ?) }' d$ S! D
  23.   * You should have received a copy of the GNU General Public License
    5 _& a6 T! w; ?+ _$ [
  24.   * along with this program.  If not, see <http://www.gnu.org/licenses/>.
    3 f! l: P5 L! ]5 {6 e* _, G9 a
  25.   *
      g: G" a/ ^5 l2 w% M& K/ u9 c
  26.   ******************************************************************************
    1 A% u( A3 ?" y6 U
  27.   */
    4 U: O1 g8 ?$ ^1 Q
  28. ' K1 R  y9 l3 Q. g
  29. /* Header includes -----------------------------------------------------------*/
    * m2 ?) M% Y7 M1 L$ J" s: I: t! J
  30. #include "main.h"! F4 t; s1 k& F5 s) L! J
  31. #include "Delay.h", A7 d5 I& [3 V( A5 b4 B. s* ~
  32. #include "BUZZ.h"6 E) a2 x8 y8 R) h+ x  r! P

  33. ! e9 B% K6 x) q# T. v/ {3 i
  34. /* Macro definitions ---------------------------------------------------------*/4 Y) B; ^6 r! z, v: U- S
  35. /* Type definitions ----------------------------------------------------------*/
    7 i& x/ |! I7 e' j
  36. /* Variable declarations -----------------------------------------------------*/3 q, k2 y' j" g& r
  37. /* Variable definitions ------------------------------------------------------*/
    & m+ s& F' @8 [; Y' T
  38. /* Function declarations -----------------------------------------------------*/
    0 x  `  f' B# y: y
  39. /* Function definitions ------------------------------------------------------*/% X) V2 @- h. I

  40. 3 q" M' Z9 `7 i8 I+ L& c6 B
  41. /**5 |' D( s+ J9 Z8 o0 A
  42.   * @brief  Main program.
    ; {+ r. K* B$ @
  43.   * @param  None.. ^- c1 C% u% M7 V' k8 ?6 i
  44.   * @return None.: `9 y2 F2 i' M
  45.   */
    7 x4 K  C; U1 a, h' W9 ~. Z( @
  46. int main(void)
    ! l* ^( D6 T, r
  47. {
    0 }4 y8 y/ {  S2 ^
  48.   for(;;)+ c3 D5 _' q+ l2 [& Q8 l
  49.   {7 N* v( O- r2 T3 d7 q% d
  50.     Delay_s(5);! D2 @7 P$ @7 o
  51.     BUZZ_SetStatus(BUZZ_Drip);
    : [8 p3 B1 U5 y0 y4 G
  52.     Delay_s(5);
    6 h8 d5 M9 F4 k( M' k+ t" ~) K  Z
  53.     BUZZ_SetStatus(BUZZ_Ring);! d% ~4 Y1 D! o# M. K% w
  54.     Delay_s(5);% R1 r% n% g  o) x5 Z
  55.     BUZZ_SetStatus(BUZZ_Warning);
    % A/ P. N" ^# i- O/ o. {- Z- W! Y
  56.     Delay_s(5);
    2 s9 W, P+ `- U* c* K
  57.     BUZZ_SetStatus(BUZZ_Danger);
      L; ~% N6 X4 |) ?, f. Y, w& D
  58.     Delay_s(5);* r& F& o6 M2 Y3 t
  59.     BUZZ_SetStatus(BUZZ_Off);
    6 k( Q" M* g1 L% i8 y! Y5 [* F7 _4 l
  60.   }
    . R9 m* h$ @' x% n5 c
  61. }  G0 q7 N5 y$ F3 J* F7 W
复制代码

3 G0 G" U# u* R" t! R$ c( O2 n3，注意. c. {& h, d$ _: C. R, N% r

' G' k7 t. Z. \5 b% ~       修改接口需要注意，蜂鸣器的驱动方式和使用的TIM。对应修改PWM输出电平和TIM时钟配置函数。$ ~+ N* e- _; \) x9 H9 @6 d
9 I9 Y  |. F) [, F
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XinLiYF 回答时间：2018-3-10 11:02:35
刚刚通过审核，自己顶一下
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意法半导体微控制器和微处理器拥有广泛的产品线，包含低成本的8位单片机和基于ARM® Cortex®-M0、M0+、M3、M4、M33、M7及A7内核并具备丰富外设选择的32位微控制器及微处理器。关注该话题即可发布文章！

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