1、RCC相关:
6 @5 b/ ~* n5 v$ a0 H5 d4 H! b1 v0 \! \0 i2 H; F7 x
APB2启动时钟项:
2 ]+ {. [* c, ]: o0 g( r' q0 o- RCC_APB2Periph_AFIO, RCC_APB2Periph_GPIOA, RCC_APB2Periph_GPIOB,
/ |0 o3 ]! e- i: S! H& B3 @; @6 P - & W- Q0 c! e2 ? V
- RCC_APB2Periph_GPIOC, RCC_APB2Periph_GPIOD, RCC_APB2Periph_GPIOE,
1 ~* r7 g' c& M" ^: d X
; x, P$ }! g5 [! E- RCC_APB2Periph_GPIOF, RCC_APB2Periph_GPIOG, RCC_APB2Periph_ADC1,. v( J! a1 C2 M0 I" E
- ) U/ y8 Q1 l- J6 W( x) a
- RCC_APB2Periph_ADC2, RCC_APB2Periph_TIM1, RCC_APB2Periph_SPI1,
) O j! _% N& j6 [* h0 m
4 Q4 Z7 }* f8 P: `- RCC_APB2Periph_TIM8, RCC_APB2Periph_USART1, RCC_APB2Periph_ADC3,
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- RCC_APB2Periph_ALL
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2 R1 n1 T9 J c! Z1 |- X- AAPB2启动函数:
j3 x) V( B2 w: F+ T! L) [- RCC_APB2PeriphClockCmd(XX,ENABLE);
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8 {7 q& ~! ^ A* D* |
9 D" v+ S+ F8 H' i b% v6 E# oAPB1启动时钟项:. L/ m( X; w) R# p
- RCC_APB1Periph_TIM2, RCC_APB1Periph_TIM3, RCC_APB1Periph_TIM4,
8 m# W* Q2 v1 R( I
( Q9 l7 A! D( k, l. q g/ p6 S) c2 W- RCC_APB1Periph_TIM5, RCC_APB1Periph_TIM6, RCC_APB1Periph_TIM7,
2 C$ S5 n' k9 q; Z# V - ' M6 [6 k/ _5 v+ d7 b2 m
- RCC_APB1Periph_WWDG, RCC_APB1Periph_SPI2, RCC_APB1Periph_SPI3,
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. o, T* i! j2 m, P- RCC_APB1Periph_USART2, RCC_APB1Periph_USART3, RCC_APB1Periph_USART4,
+ V# N2 A, `8 m. f2 e$ ~
9 Y; ^0 O; C5 M7 [: g( h3 l* `- RCC_APB1Periph_USART5, RCC_APB1Periph_I2C1, RCC_APB1Periph_I2C2,6 V! Z+ U2 A" d) E6 n6 D! C
- 7 ~5 K' U, ~* s4 \3 N
- RCC_APB1Periph_USB, RCC_APB1Periph_CAN1, RCC_APB1Periph_BKP,* \0 X: j! A3 f$ ~0 x- Y2 y& [
- 9 L7 c9 q1 J$ Z" B/ W
- RCC_APB1Periph_PWR, RCC_APB1Periph_DAC, RCC_APB1Periph_ALL
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4 z" t9 J+ @" v1 w& eAPB1启动函数:
9 G G7 E) Z( G- RCC_APB2PeriphClockCmd(XX,ENABLE);
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AHB启动时钟项: b2 P b. X+ V4 ~/ O
- RCC_AHBPeriph_DMA1% o {. e4 q o% k4 U# e, n
- L5 _# {! s! G
- RCC_AHBPeriph_DMA2+ c3 h0 S" \& [0 S
- $ U2 m, r6 _( t0 }- o$ ~; w2 x
- RCC_AHBPeriph_SRAM
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- RCC_AHBPeriph_FLITF
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8 W2 ~+ y q$ N- RCC_AHBPeriph_CRC
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- RCC_AHBPeriph_FSMC7 L, R4 j7 \ g4 c5 K: W; x& L
9 T$ c# O2 Z8 E* u2 ]( _( b f- RCC_AHBPeriph_SDIO
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AHB启动函数:
9 N0 C& x# o7 y# @, N- RCC_AHBPeriphClockCmd (XX,ENABLE);
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2、GPIO相关:4 T D) H' c3 \
GPIO模式:" i' J7 {2 S/ Z! Z
- GPIO_Mode_AIN:模拟输入 GPIO_Mode_IN_FLOATING:浮空输入( G; p; V8 x# a
- 6 X" K b: { q" P, u" r6 s1 y
- GPIO_Mode_IPD:下拉输入 GPIO_Mode_IPU:上拉输入& y* A0 m! p) W9 z8 j* u
- " t9 C4 Z& o/ ]/ M
- GPIO_Mode_Out_OD:开漏输出 GPIO_Mode_Out_PP:推挽输出6 Y1 u1 y" F ~7 G
6 u Q: M( l, S- GPIO_Mode_AF_OD:复用开漏输出 GPIO_Mode_AF_PP:复用推挽输出" A: h1 H0 `% q# U* d8 ~9 n
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GPIO速度:
: Q; D$ s {& x. k2 t. p- Z7 v$ j5 }8 A1 d
- GPIO_Speed_2MHz$ U( [8 v) l. K" d! F
- N1 N; x/ J7 r: S/ @' g; N' x- GPIO_Speed_10MHz* }+ L6 S' f0 y" T* d; p
: L( t) H' Y7 }1 o- GPIO_Speed_50MHz
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) X8 t$ E' L3 l% @GPIO引脚声明:0 \) [ t0 T7 i
- <span style="background-color: rgb(255, 255, 255);">G</span>PIO_InitStructure.GPIO_Pin = GPIO_Pin_x; x:1~15或者all
) N! c0 N$ ~" u, `% ?
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! _# n/ k; S) @' nGPIO初始化函数:
5 D3 ]0 B6 s- N2 b' [( g0 U% H2 I- GPIO_Init(GPIOx, &GPIO_InitStructure); x:A~G
复制代码 注:需要定义GPIO结构体变量,GPIO_InitTypeDef GPIO_InitStructure;
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. x4 E' \: H6 C3、ADC相关
$ {. N) V; l' w& h6 ?6 X最好需要重新初始化:ADC_DeInit(ADCx);" r( e0 @3 L0 \* d$ |
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ADC工作模式选择:) G8 F! L1 ]- H0 S* B. h
- ADC_Mode_Independent:独立工作 ; ?. D* r D) ~/ O. C. o; F( y1 B
- * Y& Y; d( m5 ^% R+ m
- ADC_Mode_RegInjecSimult:混合同步+注入同步
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7 a6 v- ~6 R* G+ |& {1 w+ @- ADC_Mode_RegSimult_AlterTrig:混合同步+交替触发
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2 J: K& \4 G! ~# l4 I" F. r5 o- ADC_Mode_InjecSimult_FastInterl:混合同步+快速交替. l. K2 m! e: o4 ]
- ' a- `* t4 Q+ G
- ADC_Mode_InjecSimult_SlowInterl:混合同步+慢速交替6 T5 _6 J2 D8 X" x) i0 K2 [6 t8 c* j1 d
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- ADC_Mode_InjecSimult:注入同步
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- ADC_Mode_RegSimult:规则同步
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- ADC_Mode_FastInterl:快速交替 6 J2 d6 z# b8 D; `" \
: J! |0 H8 l* `, }- ADC_Mode_SlowInterl:慢速交替
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" d! {8 t/ W/ V& i i- ADC_Mode_AlterTrig:交替触发
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: z3 K- j3 l! x* j2 J- 通过ADC_InitStructure.ADC_Mode = XX进行赋值
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3 s k: _9 `# k/ ?6 KADC扫描使能:
: f7 {" Q2 G4 K8 {+ T% R& ~9 D- ADC_InitStructure.ADC_ScanConvMode = ENABLE;
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ADC连续 /单次模式选择:
6 f3 W/ n: `* h' z- ADC_InitStructure.ADC_ContinuousConvMode = ENABLE;
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ADC转换控制方式:
: T9 T. Q! h+ [2 b- ADC_InitStructure.ADC_ExternalTrigConv = ADC_ExternalTrigConv_None;//有软件控制转换
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ADC数据对齐方式;- ADC_DataAlign_Right:右对齐 / ADC_DataAlign_Right:左对齐9 H8 U T' r/ P4 n* O" O: {
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- ADC_InitStructure.ADC_DataAlign =XX
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' Y/ O6 y) Z8 h) K# ? x6 kADC转换通道数: - ADC_InitStructure.ADC_NbrOfChannel = X // X=1~16
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! ?( l& @& ^' K0 EADC初始化函数: - ADC_Init(ADCx, &ADC_InitStructure);
复制代码 注:在开始要定义结构体变量 ADC_InitTypeDef ADC_InitStructure
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是否使能ADCx DMA : - ADC_DMACmd(ADCx, ENABLE);
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使能ADCx:
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* E& \: T3 @2 V3 W! H" M: i( Z初始化ADC1校准寄存器:0 `; Z7 Z6 ?2 Y1 Y) e X. w
- ADC_ResetCalibration(ADCx);
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6 n E: X8 W2 x3 a% e% A. u+ t8 w检测ADC1校准寄存器初始化是否完成:# p- s* }2 m! i" b# {) Z/ i* u9 Y
- while(ADC_GetResetCalibrationStatus(ADCx));
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开始校准ADC1: - ADC_StartCalibration(ADCx);
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检测是否完成校准:7 ]' n7 B1 n! J8 ]* Z. j( b7 w) |8 J
- while(ADC_GetCalibrationStatus(ADCx));
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& |3 ]9 C' \- qADC1转换软件启动: - ADC_SoftwareStartConvCmd(ADCx, ENABLE);
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- n, G/ Z6 g& u" Y# Z4、DMA相关:
4 f) L8 a% u/ O复位通道:
2 f0 o, }) O3 d! w- DMA_DeInit(DMAy_Channelx);//复位DMAy通道x,y=1时,x=1~7;y=2时,x=1~5
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定义外设基地址,全局变量:1 o% s1 n. S' c/ ^2 w3 A
- DMA_InitStructure.DMA_PeripheralBaseAddr = ADC1_DR_Address;//地址自己定义
复制代码 如:#define ADC1_DR_Address ((u32)0x4001244C)% Y; B+ ~. _7 v/ `& w
0 z% b8 N# Y* A# c" l/ p! ~定义DMA存储器地址,全局变量u327 D- N$ U% K) o8 ?4 E
- DMA_InitStructure.DMA_MemoryBaseAddr = (u32)&ADC_ConvertedValue; //定义DMA通道存储器地址
复制代码 如:volatile unsigned short int ADC_ConvertedValue[8];5 A- Z/ y7 ]3 O, |
9 d" y& S0 o) [+ o7 k+ i
DMA外设方向:
Z3 b1 t% X' Y( I$ l- DMA_InitStructure.DMA_DIR = XX;
复制代码 DMA_DIR_PeripheralSRC:外设为数据传输的来源,DMA_DIR_PeripheralDST:外设为数据传输的目的地2 s- ^5 }. [( k) I- V
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DMA传输数量寄存器值,即缓存大小,单位由MemoryDataSize或PeripheralDataSize决定:
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DMA_InitStructure.DMA_BufferSize = x;- ]' ] u$ K2 C9 R4 P- [# t, h
4 q, c! x$ @8 O; v' g+ M//定义DMA缓冲区大小x,如8通道ADC,则x就为8' y- i% P. p' v/ R9 s8 J" l
% J! E: O+ N! E/ {
DMA外设地址寄存器变不变:
4 R( A) j) E$ r+ ` g- DMA_InitStructure.DMA_PeripheralInc = x;
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, F7 `3 V5 N& u5 xDMA_PeripheralInc_Disable:外设地址寄存器不变 DMA_PeripheralInc_Enable:外设地址寄存器递增
' {3 j4 ~0 ?; Q5 L: a
5 P4 t- j/ P7 f( I+ TDMA内存地址寄存器变不变:9 H5 P* Y6 R9 b& i
- DMA_InitStructure.DMA_MemoryInc = X;
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' n) G9 T6 {2 m) zDMA_MemoryInc_Disable:内存地址寄存器不变 DMA_MemoryInc_Enable:内存地址寄存器递增) N! Q% k( K7 W6 E% d
1 [( P" Z- g* [! `, H+ q, M7 ^! N外设数据宽度:
1 }: j* Q1 u1 Q9 {2 \; T, ?- DMA_InitStructure.DMA_PeripheralDataSize = X;
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8 P" L- q! E# V, g! @$ r d8 BDMA_PeripheralDataSize_Byte 数据宽度为8位
4 c! M) z4 g; d! v. l" c( R" z9 I
3 F9 M( ?* n* z9 b# |DMA_PeripheralDataSize_HalfWord 数据宽度为16位9 u% k8 l) } w( ?: y
) Q( l: E& r' d- S% h/ a: d5 hDMA_PeripheralDataSize_Word 数据宽度为32位
4 f7 H1 w$ B+ r* T' H6 J# e, r( Q5 H- [) r; }
( N* s- T9 N" B- Y! [存储器数据宽度:( C* P" h0 g9 {0 u; q, T2 X
- DMA_InitStructure.DMA_MemoryDataSize = X;
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4 N+ s1 R9 A* K+ U1 i( JDMA_MemoryDataSize_Byte 数据宽度为8位! d6 w- k" k) }8 ^6 |5 n
; @. J1 [0 A: m4 G. LDMA_MemoryDataSize_HalfWord 数据宽度为16位2 W3 u. S2 X3 i; \& }. b2 ~
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DMA_MemoryDataSize_Word 数据宽度为32位
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模式选择:
7 Q7 Z. @ k4 i) D. {, v" A$ X- DMA_InitStructure.DMA_Mode =x;
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DMA_Mode_Circular: 循环模式
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DMA_Mode_Normal:正常模式) ]' m; w2 o/ G* O
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通道软件优先级设置:, k" A C4 u9 e% U1 r
- DMA_InitStructure.DMA_Priority =x;
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DMA_Priority_VeryHigh 最高优先级% q9 z8 H/ z6 @5 O
- ^" t8 l& ]: {- _! M1 k) pDMA_Priority_High 高优先级
+ I5 r) D. w' B
5 H( g" e) A# vDMA_Priority_Medium 中优先级0 y8 b+ G, d* o/ b" s
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DMA_Priority_Low 低优先级
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DMA内存到内存的传输使能: - DMA_InitStructure.DMA_M2M = x
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DMA_M2M_Enable:使能
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F: n% W2 H% D# ADMA_M2M_Disable:未使能
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* [4 H+ w4 p4 T4 |2 w9 LDMA初始化函数:
) P5 U6 ~) x. z: E5 c- DMA_Init(DMAy_Channelx , &DMA_InitStructure);
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$ T- _9 k7 t) T6 C. A( d" o' N; o3 DDMA通道使能函数:, G* C4 O$ j4 t& h$ P
- DMA_Cmd(DMAy_Channelx , ENABLE); //使能DMA通道1
复制代码 注:在开始要定义结构体变量 DMA_InitTypeDef DMA_InitStructure4 i6 i, g1 t5 G2 |* `& g
& U; O: w9 h; l- L- @! x
& Y+ M; x$ J9 M5、NVIC相关:! H" i7 f8 I7 R" J$ c) \3 ?
优先级组设定:
% ^! U% e" Q) @7 E- NVIC_PriorityGroupConfig(NVIC_PriorityGroup_x);, t* Q9 S: u: u, E' v! ~
. a2 z$ T" A1 x) E6 j0 g- NVIC_PriorityGroup_0: 0 bits for pre-emption priority& Q) _! C3 {& h7 ~
1 ^) b2 g) R1 j5 d1 n+ y- E3 N0 [/ z- 4 bits for subpriority% w3 [2 ?% Q# W
* h% A8 d. P' Y$ G1 w$ a- NVIC_PriorityGroup_1: 1 bits for pre-emption priority
: \+ s$ N7 L9 V - / ~- u! D6 I L% G# Z" M* e/ Q. i
- 3 bits for subpriority, v5 |, d' B8 Q
( U6 p3 I" w- S( o5 A. i% f$ V6 R& ^- NVIC_PriorityGroup_2: 2 bits for pre-emption priority
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- 2 bits for subpriority
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, N! A- }6 S6 J- NVIC_PriorityGroup_3: 3 bits for pre-emption priority( d+ K8 c( U4 E# j$ G8 H; v. ?
; J* O. p! Y4 |% R6 ?2 \: z- U- 1 bits for subpriority, g3 k4 }) k$ E0 V6 w# d$ ]
5 S% b0 e+ v( y; _" k- NVIC_PriorityGroup_4: 4 bits for pre-emption priority" L* u% T9 s8 Y1 q
$ i3 Q ?0 ?1 y' c& f- 0 bits for subpriority
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设置中断:
$ W5 f0 o7 X2 E. ?1 Y/ v! t D5 T) B ?( W0 O1 o# c9 u2 e9 B
- NVIC_InitStructure.NVIC_IRQChannel =x;
' H: I n1 O( X1 g y8 x - " O! [9 w+ H9 B% J( t3 Q
- ADC1_2_IRQn = 18, /*!< ADC1 and ADC2 global Interrupt*/5 S! C2 a' }+ Y# L
- 1 A- _% u# T. b
- USB_HP_CAN1_TX_IRQn = 19, /*!< USB Device High Priority or CAN1 TX Interrupts */
% N+ a( j9 x. `* @2 q
7 @- |; N2 f. x% S6 m A% ~- USB_LP_CAN1_RX0_IRQn = 20, /*!< USB Device Low Priority or CAN1 RX0 Interrupts */' W$ c( P7 f. S) o* Z6 H% n; [
5 U3 Q! }" y" @4 |, y- CAN1_RX1_IRQn = 21, /*!< CAN1 RX1 Interrupt*/. n" ^( H( n- N1 }& v$ G
: s9 i" h W: M' g5 A- CAN1_SCE_IRQn = 22, /*!<CAN1 SCE Interrupt*/: j6 a( t% t' y# f5 {& }4 k, Q# i
- 9 }4 r2 L$ m& n% D
- EXTI9_5_IRQn = 23, /*!< External Line[9:5] Interrupts*/
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" U* j$ Q6 S+ F( n- TIM1_BRK_IRQn = 24, /*!< TIM1 Break Interrupt*/
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- TIM1_UP_IRQn = 25, /*!< TIM1 Update Interrupt*/
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- TIM1_TRG_COM_IRQn = 26, /*!< TIM1 Trigger and Commutation Interrupt*/( }* ]* o) }4 ]$ w, Z
- & S0 \- K( ^2 V
- TIM1_CC_IRQn = 27, /*!< TIM1 Capture Compare Interrupt*/$ t! F1 D# P6 H( u! P' F0 F4 ^; B, G
- 2 u+ S+ N( K6 j2 {) i9 y' @8 |; R
- TIM2_IRQn = 28, /*!< TIM2 global Interrupt */, w$ ^% W0 n' V- L: J, [# a
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- TIM3_IRQn = 29, /*!< TIM3 global Interrupt */
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9 f) k+ p6 W% w5 J+ Y3 q; z. |- TIM4_IRQn = 30, /*!< TIM4 global Interrupt*/
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- I2C1_EV_IRQn = 31, /*!< I2C1 Event Interrupt*/
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- I2C1_ER_IRQn = 32, /*!< I2C1 Error Interrupt*/
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" Q: a7 N- W" m- c6 U- I2C2_EV_IRQn = 33, /*!< I2C2 Event Interrupt */
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7 _( o. c) z4 ?6 w7 `- I2C2_ER_IRQn = 34, /*!< I2C2 Error Interrupt */
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: U' a- @) r# G1 ~2 R0 ]- SPI1_IRQn = 35, /*!< SPI1 global Interrupt*/. e. A5 g0 t* v) z* _; Q& Z
* O+ l- e+ W: s: q0 Q! R4 v- SPI2_IRQn = 36, /*!< SPI2 global Interrupt*/, ?' D1 X, p; }. }% l8 A3 X
- J: b S) }2 E& x3 L- USART1_IRQn = 37, /*!< USART1 global Interrupt*/
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* x& t( Y! `* Y: m+ j- USART2_IRQn = 38, /*!< USART2 global Interrupt*/+ s1 w# p: L2 X) a
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- USART3_IRQn = 39, /*!< USART3 global Interrupt*/( S4 u4 x' z: L, L6 P+ u$ [7 U9 O, W( K9 h
- ! q7 @2 I" ~. F) m
- EXTI15_10_IRQn = 40, /*!< External Line[15:10] Interrupts*/
% m( y6 v+ G$ `
, A# ^' D( q9 b2 i! O9 ]( w- RTCAlarm_IRQn = 41, /*!< RTC Alarm through EXTI Line Interrupt*/+ B, G+ Y1 G4 a" R$ O, G, w9 P
, V X' C3 s o1 @- USBWakeUp_IRQn = 42, /*!< USB Device WakeUp from suspend through EXTI Line Interrupt */
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- TIM8_BRK_IRQn = 43, /*!< TIM8 Break Interrupt */. w% P9 f9 Y6 w
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- TIM8_UP_IRQn = 44, /*!< TIM8 Update Interrupt\*/
c! ?( |$ p8 p* g3 w4 w- j I/ _
2 [( N: {5 r* x$ B! Z5 P7 Q3 a- TIM8_TRG_COM_IRQn = 45, /*!< TIM8 Trigger and Commutation Interrupt
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: L; O& f$ ]) w" z- TIM8_CC_IRQn = 46, /*!< TIM8 Capture Compare Interrupt*/' v' y$ x. l0 e0 ~2 `6 J" A
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- ADC3_IRQn = 47, /*!< ADC3 global Interrupt*/
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# G& E: h6 r& J' h, g. m! V- FSMC_IRQn = 48, /*!< FSMC global Interrupt */
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- SDIO_IRQn = 49, /*!< SDIO global Interrupt\*/( k1 H4 J3 f& B. W+ Y7 u" I
8 N# h/ d7 D$ ]9 U6 e+ h0 u3 q2 }& S- TIM5_IRQn = 50, /*!< TIM5 global Interrupt*/
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- SPI3_IRQn = 51, /*!< SPI3 global Interrupt*/
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6 |- o; H+ y( J6 o5 F4 P4 E- UART4_IRQn = 52, /*!< UART4 global Interrupt */$ @9 J& m0 k& h8 g$ \4 Z" N
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- UART5_IRQn = 53, /*!< UART5 global Interrupt */2 _, b* a4 R# O/ x
5 a G! k7 }: r- E; N7 M) f- TIM6_IRQn = 54, /*!< TIM6 global Interrupt */
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- TIM7_IRQn = 55, /*!< TIM7 global Interrupt */" _ k* o8 c3 T% F, z0 e
/ s3 I' k5 ?6 {8 \, ~- DMA2_Channel1_IRQn = 56, /*!< DMA2 Channel 1 global Interrupt*/6 M" V/ {( Q% ]6 @8 B
5 |2 v/ d8 z- ~! g* [" |8 C- DMA2_Channel2_IRQn = 57, /*!< DMA2 Channel 2 global Interrupt */
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- DMA2_Channel3_IRQn = 58, /*!< DMA2 Channel 3 global Interrupt*/
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- DMA2_Channel4_5_IRQn = 59, /*!< DMA2 Channel 4 and Channel 5 global Interrupt*/
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设置抢占优先级:
) H+ |" B" h+ M% S2 `1 g# f# _- NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority =X; //抢占优先级 X
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设置子优先级为:$ a+ o6 T' C' D
- NVIC_InitStructure.NVIC_IRQChannelSubPriority =X; //抢占优先级 X
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- NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE; //使能
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NVIC初始化函数:
1 Z* g3 H- z2 X/ Q t- NVIC_Init(&NVIC_InitStructure);
复制代码 注:在开始时需要定义结构体变量NVIC_InitTypeDef NVIC _InitStructure;
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6、USART相关:
+ F- g$ `1 ]# L7 u1 y! |% m r' c$ \& ZUSART波特率选择:3 q6 G" \! Z) G! W/ |4 k
- USART_InitStructure.USART_BaudRate =XX; //波特率为XX bps
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数据位位数选择:1 M7 e. T% C2 A2 I
- USART_InitStructure.USART_WordLength = USART_WordLength_Xb;
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Q" }. l6 u5 h- n停止位位数选择:
/ M @0 a! }+ f% ?- USART_InitStructure.USART_StopBits = USART_StopBits_1; //停止位1位, U: P. Z, d1 L% N0 D
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- #define USART_StopBits_1 ((uint16_t)0x0000). V( }6 U) W, z5 a7 e
. Q( h( p5 U0 W. I- #define USART_StopBits_0_5 ((uint16_t)0x1000)& j4 @" K% b4 z6 g
5 a- `7 _4 k+ c' L- #define USART_StopBits_2 ((uint16_t)0x2000)
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6 l) |+ D6 D7 p w8 } o4 r- #define USART_StopBits_1_5 ((uint16_t)0x3000)
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2 c' f- Z0 g% p J0 T有无校验位选择:
; V3 v( r3 o4 g! z- USART_InitStructure.USART_Parity = USART_Parity_No; //无校验位3 f" y; C, Y7 W! }
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- #define USART_Parity_No ((uint16_t)0x0000)1 b+ E [8 D; v1 X
: N e3 ?! {; @+ X: N- #define USART_Parity_Even ((uint16_t)0x0400)
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- #define USART_Parity_Odd ((uint16_t)0x0600)
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7 `, V0 H& _6 I) P$ p有无硬件流控选择:
/ J8 |% _% M7 n& i7 R- USART_InitStructure.USART_HardwareFlowControl = USART_HardwareFlowControl_None;9 C2 p& g' S. u" W n8 B4 J. S
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- //无硬件流控/ `- H2 i, o: c; _
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- #define USART_HardwareFlowControl_None ((uint16_t)0x0000)- v3 z" _# m5 |, h
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- #define USART_HardwareFlowControl_RTS ((uint16_t)0x0100)
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- #define USART_HardwareFlowControl_CTS ((uint16_t)0x0200)# R) S8 t( n0 J( x) I
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- #define USART_HardwareFlowControl_RTS_CTS ((uint16_t)0x0300)
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模式选择:3 S1 Y# P# u; I' _; O
0 o' q2 N6 k5 R) D7 {3 r. K- USART_InitStructure.USART_Mode = USART_Mode_Rx | USART_Mode_Tx; //收发模式 @" E4 j2 Y3 Z7 ~7 Y- m8 g0 b
" A& s6 L$ Y: h; n- #define USART_Mode_Rx ((uint16_t)0x0004)
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}2 E/ s$ s* p) v4 ` O! t; V- #define USART_Mode_Tx ((uint16_t)0x0008)
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配置串口参数函数:
8 u t& q' ]! }0 b5 H9 w# Q- USART_Init(USARTx, &USART_InitStructure);
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- USARTx 可选:USART1, USART2, USART3, UART4 or UART5
复制代码 注:在开始时需要定义结构体变量USART_InitTypeDef USART_InitStruct;3 L( g. H, D- k$ w7 x- [0 f
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- USART_ITConfig(USARTx, USART_IT_RXNE, ENABLE);
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使能发送缓冲空中断:$ D6 E% j l1 j3 f" P; H
- USART_ITConfig(USARTx, USART_IT_TXE, ENABLE);
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使能发送完成中断:
0 K# B) r5 U; ^( i5 W1 a- USART_ITConfig(USARTx, USART_IT_TC, ENABLE)
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- USART_Cmd(USARTx, ENABLE);
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