【经验分享】STM32F2系列外设设置规则

STMCU小助手 · 2021-12-04T09:03:25+00:00

外设设置规则： + z1 ]8 G# }* E4 o" f% ]8 T$ _7 s在配置之前必须添加外设的.c文件，以及相应包含的.h。.h文件在stm32f2xx_conf.h中添加。. g: @% O& V Q. J" d, q. J$ a 4 G) ^( k! ~$ P$ i0 Q9 X% \$ z 1、时钟设置：包括引脚时钟和外设时钟：; u% v6 v, {, C ; V) y' [0 Y- e4 Q2 ?6 w RCC_XXXPeriphClockCmd(); ) R# u% V! j* e) ?0 Z# a$ \ w# Z/ j: I" i: a, a$ [ S 2、引脚连接：即把引脚和外设功能进行连接；% k0 a# R% f+ C; H7 B 0 @& {% t: d+ W GPIO_PinAFConfig(); + p" p ^7 Q% R! I$ V) @+ h4 d 2 ?5 E4 e; s3 c' y5 J& v! X如下功能需要引脚与外设连接。) k$ S+ K2 ~; j. F 4 o' G9 ?* } n" v# e6 b3 k * @arg GPIO_AF_RTC_50Hz$ X- Z: m. Q; `- v% q & o- |; e8 D& ^* n: d" V0 O" p * @arg GPIO_AF_MCO* A# s; h' D9 c" @& ^. b ; K+ i1 f* H, {, k9 U. Q' j * @arg GPIO_AF_TAMPER ' J# I. w. @0 v& G/ W0 @, r % z; W- y9 F# e8 p8 s ]3 T * @arg GPIO_AF_SWJ/ I* ~0 s4 _' q/ y! b4 A 9 I* M: b! T1 v* o4 F * @arg GPIO_AF_TRACE0 c3 {) z/ Z9 D( f9 Q 3 u2 \- y% m" J" H * @arg GPIO_AF_TIM15 A' K0 W4 p+ a/ i3 H 1 x% m! ^# ?& V * @arg GPIO_AF_TIM26 ], U8 A9 m% K ) V/ @- j+ V, z * @arg GPIO_AF_TIM3 / n& W7 d! a# E) L* |! {1 V+ q8 w+ s8 w' T" X( V * @arg GPIO_AF_TIM4 2 H2 e4 l G; `7 K; t* a: M5 l$ D9 k W * @arg GPIO_AF_TIM5+ _" | e/ W9 q 9 {+ I! S( v3 k# ] * @arg GPIO_AF_TIM8 8 ?! Z" Q) M2 d& ^$ [9 u1 T0 N+ M3 O$ P; A/ b6 v; y2 B2 I * @arg GPIO_AF_TIM9 6 [2 ?6 p. @9 s, V9 { 2 h8 y: x h* J+ l * @arg GPIO_AF_TIM10 7 { e2 R+ q9 n. t/ P6 t" a f7 W: g * @arg GPIO_AF_TIM11 ( R& e, Y$ [& d9 ?( q8 L 8 r! P0 A( o) g! S" t- v) M0 j * @arg GPIO_AF_I2C1: K8 e2 s; w7 Y2 D# c7 e0 w * ]+ V( i5 a% U2 C * @arg GPIO_AF_I2C2 . z$ g) v* Z1 P# N* y! ~$ x7 \, m3 i' b+ x6 V, r1 Z2 ?" E" | * @arg GPIO_AF_I2C33 C$ Z9 X. M$ d5 W& {$ t + q8 T' c* M7 o * @arg GPIO_AF_SPI1 ) \# v6 H. q. z) L" h( n: F/ Q8 F* a" i2 m6 K% } * @arg GPIO_AF_SPI28 G6 S0 r6 F; }7 o- r 4 d( D$ L0 I" H, Z. j * @arg GPIO_AF_SPI30 y% \1 \8 Q- z+ n . L" V1 f' _, c2 G * @arg GPIO_AF_USART1 1 |$ V. d# `) Y" i7 P $ t/ T* X: b: { * @arg GPIO_AF_USART2 7 e3 t/ |' S) `9 f. [* t 6 r3 r% k* ^; h5 W$ O( d8 k. Q/ Y * @arg GPIO_AF_USART3/ C9 Z5 g. n3 s# z 5 X5 |3 s8 D* P: W0 h * @arg GPIO_AF_UART4 5 N# y. Y+ P- d* m. E& |$ O8 n% T8 N$ ?- S" E * @arg GPIO_AF_UART51 Z/ C* F# N/ I4 \* t " S& M' u9 c' r( G6 y& o" Y V- T * @arg GPIO_AF_USART6 6 \4 Z3 u/ B- K1 X3 p7 P5 a$ B + |. h, h) |2 ^$ ~ * @arg GPIO_AF_CAN12 K( q$ D0 t5 `* z1 m3 @ ! V+ n) Q- i k6 v4 W1 v2 Q0 I * @arg GPIO_AF_CAN2 t3 N5 i5 V: y. ~% d& [5 |9 u& ^; Y3 t0 s; o: w" j* j2 W3 \ * @arg GPIO_AF_TIM12+ O( F6 z$ w5 G- @# ^. g & F) u( p6 x& y5 z; `. f * @arg GPIO_AF_TIM130 s0 @: `; N2 e: W+ U, v3 s6 r# y % \! U% C+ O/ L* D: { * @arg GPIO_AF_TIM14 K, Y! n3 x6 G! \9 \9 r6 X - ~; d7 Y: y L- ^- c# q' D0 o( r * @arg GPIO_AF_OTG1_FS8 s( ?3 j9 F/ H* u2 r/ n8 | % E* W g: g" s, Y8 l: z * @arg GPIO_AF_OTG2_HS& T$ @+ z2 y- j: f 7 V% x' v% S* n% u9 I& m * @arg GPIO_AF_ETH( h8 D+ j# T: s9 U4 t - Y) S' P& {1 k3 H- A6 d * @arg GPIO_AF_FSMC 3 B& i) b, ~( J0 e' |2 B' L) l/ m* x6 G- U( o A3 \& M: H% y% p# W * @arg GPIO_AF_OTG2_FS2 M4 L" S3 E9 X4 U- \& B0 V & Z0 ^; V5 T; _9 z1 H; J( ] * @arg GPIO_AF_SDIO 6 s* [ P& v" u3 g) v4 N" ~3 u `3 Q& _4 u* N2 \( ^+ H * @arg GPIO_AF_DCMI : ~# C0 R" r% o+ h) q1 P8 u* m" d7 `) E. t * @arg GPIO_AF_EVENTOUT K" E" |- y0 |& }* P4 h/ U) U5 a. W+ C9 d. _! `( S7 w 3、初始化GPIO配置： / O. T7 P& D8 I1 @( @5 v% \$ l1 Z0 j2 X9 k1 |$ [! U' U GPIO_Init(); 1 H b7 W4 ]7 t+ ]3 L$ o2 M6 ?8 v( w: R- x" ~6 A F 4、外设初始化：6 G/ s6 c- M, |# L4 m/ t. T- K1 |8 P; C % S$ Y4 R# {" L2 U5 g0 }. V. ` 如UART初始化如下：9 _" O( {2 `+ w7 a. m5 q# A) n , e1 ]0 a7 D% E2 T. { O: K9 MUSART_InitStructure.USART_BaudRate = 115200;1 z4 |. S, @% g* n- M 8 I- `7 O8 w0 T' P. u4 z1 x& r; A' U* BUSART_InitStructure.USART_WordLength = USART_WordLength_8b;! @' t; Y' m7 N9 |: S' z" g 2 h) E$ L. Q+ a8 tUSART_InitStructure.USART_StopBits = USART_StopBits_1; 1 r) _, S5 ~" v+ J! }% D5 y: q- a8 [8 w1 h+ H% `6 R' k9 y USART_InitStructure.USART_Parity = USART_Parity_No;5 Z$ T1 m! T7 Q* Y$ {" g% a $ J0 R$ E! V- b9 v/ d USART_InitStructure.USART_HardwareFlowControl = USART_HardwareFlowControl_None;& Q/ W: [/ K& O# l ' [; N" g2 w7 r# ~ G: F USART_InitStructure.USART_Mode = USART_Mode_Rx | USART_Mode_Tx;8 |' r4 [, A0 n9 K$ D/ s0 Y' F' Q : L1 |& i7 l* Z a. t! ]- a, W% y) C, B USART_Init(USARTx, &USART_InitStructure)；复制代码, q% j2 \4 |( \' D/ G \, S 6 ?- H( K/ m2 R& z5 W% Y ADC初始化如下：（多路模式）' R% S; O" W" ^3 [6 B+ U ! Q5 j. w, }/ N // DMA1_Stream0 channel0 configuration **************************************/$ B- J3 }6 o1 u % d0 ]: {+ r8 Q" V+ y DMA_DeInit(DMA2_Stream0);1 o$ I3 W) } l0 G7 o ) u+ d0 {( q. h% K DMA_InitStructure.DMA_Channel = DMA_Channel_0; 0 {+ Q) q! }* u( E3 I8 }1 X' |- l2 L/ ]/ m Y6 y DMA_InitStructure.DMA_PeripheralBaseAddr = (uint32_t)ADC1_DR_ADDRESS; //定义外设基址 2 H3 U. H9 C9 ?0 l, B% y" o# a 5 V( Z. `. U1 A# d DMA_InitStructure.DMA_Memory0BaseAddr = (uint32_t)&ADCConvertedValue; //定义寄存器基址& Q5 o3 y# [: L 1 s; i( f; ?) R3 } DMA_InitStructure.DMA_DIR = DMA_DIR_PeripheralToMemory; //定义DMA传输模式从外设到内存 ; J- s! T& N1 w" F0 \+ {. T8 U& b& u) e* p. d* A* L DMA_InitStructure.DMA_BufferSize = 4; //定义buffer大小，根据通道数来定 ) ]2 f) X2 j% t8 v- f/ h+ l* k3 n5 X% Q9 E0 ~8 z+ g DMA_InitStructure.DMA_PeripheralInc = DMA_PeripheralInc_Disable; //外设地址寄存器不变$ e" I! D: _" M5 F' z ! o) v' {: D3 h/ c1 F DMA_InitStructure.DMA_MemoryInc = DMA_MemoryInc_Enable; //DMA寄存器随之增加（单通道不增加）1 B2 c+ d& E0 B/ B1 h2 J$ ^. k 7 { {% a& O' B0 O% P% Y8 a' I DMA_InitStructure.DMA_PeripheralDataSize = DMA_PeripheralDataSize_HalfWord; //DMA外设数据大小，16位半字' s' s# A* g5 s8 {1 H) V4 K ^- M2 A0 Q+ `2 L DMA_InitStructure.DMA_MemoryDataSize = DMA_MemoryDataSize_HalfWord; //DMA存储器数据大小，16位半字0 {$ S" a5 @0 v' u( a # N- r: n1 a( @ DMA_InitStructure.DMA_Mode = DMA_Mode_Circular; //模式为循环模式6 E% y/ \* E5 W) S ( O- d [9 P7 T2 B& y# [ DMA_InitStructure.DMA_Priority = DMA_Priority_High; //DMA优先级高 : E! L! _/ Y; E. R+ Q$ i) u" b$ c' i; ?6 B; w( o1 L# u) g T DMA_InitStructure.DMA_DirectMode = DMA_DirectMode_Disable; //直接传输模式无效 DMA_InitStructure.DMA_FifoThreshold = DMA_FifoThreshold_HalfFull; / E K+ t/ X; R# ?1 \7 F8 x ) Z6 o* {. E" s DMA_InitStructure.DMA_MemoryBurst = DMA_MemoryBurst_Single;& O5 s2 g2 N( k+ a + |" H5 m, O4 t8 n DMA_InitStructure.DMA_PeripheralBurst = DMA_PeripheralBurst_Single;0 o t# D Y9 G5 O* _3 R0 o, G2 c & l, r0 v* @; L+ f5 _$ | DMA_Init(DMA2_Stream0, &DMA_InitStructure);复制代码//************ DMA2_Stream0 enable ************/" }" n/ [: [5 X P& B8 ~4 Q+ I( Z ; ^9 o4 ^9 K, b Z/ H4 l0 ^0 M DMA_Cmd(DMA2_Stream0, ENABLE); //使能DMA流0复制代码//***************** ADCs DeInit ***************/ ) T* f4 L; O m7 K3 c % ^" e4 l9 N# _) H5 j" y" O ADC_DeInit(); //ADC重初始化复制代码//************* ADC Common Init ****************/ , f% X1 G0 G7 z2 x% s( _: y5 O9 C2 i% v7 b1 T9 ` ADC_CommonInitStructure.ADC_Mode = ADC_Mode_Independent; //ADC独立模式 ' N: M# Z4 V" W3 r# E! P4 o( a! M. l ADC_CommonInitStructure.ADC_Prescaler = ADC_Prescaler_Div2; //ADC采样周期2分频 D0 X \# ]1 j9 |3 W 7 n' f+ W U4 B. Y$ G* x! ? ADC_CommonInitStructure.ADC_DMAAccessMode = ADC_DMAAccessMode_Disabled;2 i+ r, P2 p5 R8 B2 L" g1 `: h4 r K( G. z; y" C' {: D- W6 F: b" D ADC_CommonInitStructure.ADC_TwoSamplingDelay = ADC_TwoSamplingDelay_5Cycles; //采样周期6 `6 x% {/ y, P! \$ { 9 i7 \. N% w2 K ADC_CommonInit(&ADC_CommonInitStructure); //基本初始化复制代码//*************** ADC1 Init ********************/6 l6 q, \+ \7 ?' A. _! d ' Y$ R0 p& `; V. U0 Y4 |. w, N, I8 U ADC_InitStructure.ADC_Resolution = ADC_Resolution_12b; //ADC采样精度# S) v$ A4 t0 j& y $ F; h* i5 c8 w& G9 b ADC_InitStructure.ADC_ScanConvMode = ENABLE; //采用扫描模式，因为多路 ( e5 A5 M& C0 r1 V' ?7 m' ?8 {5 ^7 F0 @; p7 U* ~0 n* B8 ?: @ ADC_InitStructure.ADC_ContinuousConvMode = ENABLE; //连续扫描模式1 @- }- n/ j3 g' I - S# K; v9 g) ]! w4 S y$ [ ADC_InitStructure.ADC_ExternalTrigConvPolarity = ADC_ExternalTrigConvPolarity_None;//无外部触发 , \& E; n, c; C" ?/ C4 H$ L$ ^/ u% d' d' D ADC_InitStructure.ADC_DataAlign = ADC_DataAlign_Right; //数据右对齐 k1 P7 S8 O" U0 R- \% ]: {' p3 i1 Z( N2 \( o1 G ADC_InitStructure.ADC_NbrOfChannel = 4; //采样通道数# M2 K3 ` c; W: O 9 w; U) _# A* _ G9 o ADC_Init(ADC1, &ADC_InitStructure);复制代码//************ ADC1 regular channel12 configuration ************/ ' {% d: _! c% _: {7 c" q+ U* Y( J1 w$ B6 x6 k ADC_RegularChannelConfig(ADC1, ADC_Channel_4, 1, ADC_SampleTime_3Cycles);5 c/ q( N( a0 [. P : n1 T) @3 w4 W' S% k/ m ADC_RegularChannelConfig(ADC1, ADC_Channel_5, 2, ADC_SampleTime_3Cycles);! E8 k# E. i8 h5 e : n6 V/ _( ? D; q ADC_RegularChannelConfig(ADC1, ADC_Channel_6, 3, ADC_SampleTime_3Cycles); " D! _9 d' I( ]3 o6 `8 f, g2 D # ^ x7 H. g. _ ADC_RegularChannelConfig(ADC1, ADC_Channel_7, 4, ADC_SampleTime_3Cycles);复制代码//********* Enable DMA request after last transfer (Multi-ADC mode) *********/ @& O1 D6 n" j3 c5 F6 ` 9 H: U' N/ a) l9 I4 H% n9 A ADC_DMARequestAfterLastTransferCmd(ADC1, ENABLE);复制代码//*********** Enable ADC1 DMA ****************/ & T* A6 }# I C) @" }8 Z4 M! t ( b T" c1 q, v& v ADC_DMACmd(ADC1, ENABLE); 6 [# `" p) }, O3 D复制代码//*************** Enable ADC1 ***************/, X, l. K' i5 g( u I' F . a# D( c/ ^5 G ADC_Cmd(ADC1, ENABLE);复制代码 ! r1 k2 K/ T% X" O s" R |4 {//******* Start ADC1 Software Conversion *****/ - B: H/ V2 R- Y3 a* p5 \0 y' ~* Q! I0 K; ? ADC_SoftwareStartConv(ADC1); //软启动开始采样复制代码 i9 j6 U; |0 ]9 h2 r1 h ! `0 h8 n' P8 i$ K$ U 5、中端配置：1 P9 R3 R9 s5 M- o + {+ |0 x( b5 t. X7 c, O 以下为串口中断配置： " y/ W# m6 X ^3 H% o) q ! w1 V& ~3 k" F9 ]7 _& C0 Lvoid NVIC_Configuration(void) 6 f3 l2 B; S" f; C% f8 J( b 1 w! P T6 C1 i4 Q7 N{ $ o6 Q. x/ e# R- V& w1 a+ W- ?" f: u- C + J( I% x' k4 J! ]4 q NVIC_InitTypeDef NVIC_InitStructure;- t6 d# F' w) Z ( J, e9 P! @. z X: Z5 u/ J9 l* `4 ? ) I! H6 d& Y" G$ z8 V3 v0 [) M! W1 Y# o1 `2 U /* Configure the NVIC Preemption Priority Bits */ 3 m7 L3 q }+ X9 y, L# @( P8 ^. x! U' j# K /* Configure one bit for preemption priority */ N: i% b% M0 F. g! q ( }5 ~3 V, L O+ U% c /* 优先级组说明了抢占优先级所用的位数，和子优先级所用的位数在这里是1， 7 */ + @6 O* }. q8 s7 }$ }% z+ |7 Z" E ' c' I) D! l) a NVIC_PriorityGroupConfig(NVIC_PriorityGroup_0); 8 x- O, v, l1 y9 E+ B$ m% n# c 4 g" {4 T) X E3 s! _ * X0 Y+ @/ t( \' R * {& E3 {+ W, q4 e /* Enable the USART1 Interrupt */5 \) Q) K, m+ V! o" m4 { % }3 Q" T4 G3 C: w/ m+ q% ? NVIC_InitStructure.NVIC_IRQChannel = UART5_IRQn; //设置串口5中断 # P8 Y+ Z) a( P+ K3 y! v$ ~6 N : z, m) q8 {! H5 c% P NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0; //抢占优先级 03 B2 y) L' g7 O 1 K5 `- F1 e- W" t8 f6 F- K6 c) M, X NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0; //子优先级为0 ! f1 J+ S* R0 O' ?! r$ V9 a% H J, [# w8 j# d8 E ~ NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE; //使能) o5 M& S; K* d3 F' C; q 4 \/ f. ]4 l0 d& T1 s. b' h) K8 R NVIC_Init(&NVIC_InitStructure);# _3 o& l3 }/ j0 k % b: r5 R6 p: y' L! ]; W} ) S' c# p4 d& c/ d: \% ?, l; a. A" }! O4 G USART_ITConfig(USART1, USART_IT_RXNE, ENABLE); //使能接收中断8 [& ~, r; D1 @" G- Z1 j! X # B% J5 v1 e D% \USART_ITConfig(USART1, USART_IT_TXE, ENABLE); //使能发送缓冲空中断5 ~4 _9 S }0 e; t) R ( T0 p, C1 [; PUSART_ITConfig(USART1, USART_IT_TC, ENABLE); //使能发送完成中断 + J" O' A T# e1 F复制代码: A& P) Y% K% ^* N( O% @ 6、使能外设功能： % f M6 i2 Z+ I" q" q: [2 E& v% X4 l: ]- [/ J# N: { 串口使能：! _# a" l2 O) u8 k: Z: I* T 2 T( k& h/ Z" B* K& W7 V8 a+ e# T5 @ USART_Cmd(USARTx, ENABLE);0 z2 j/ P/ o6 `1 G5 g- I& T 4 V+ i: Q& r8 T7 TADC使能： . n; ^- `1 P4 Z# F! s; B- h9 y5 M" i4 X% F0 D ADC_Cmd(ADC1, ENABLE);' c5 H! X" [4 `' @) @6 x 复制代码 7 O n0 Q) D9 Y* L! X8 e6 t) B) O* a+ d

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STMCU小助手发布时间：2021-12-4 17:03

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文章封面:
文章简介:	在配置之前必须添加外设的.c文件，以及相应包含的.h。.h文件在stm32f2xx_conf.h中添加。

外设设置规则：
在配置之前必须添加外设的.c文件，以及相应包含的.h。.h文件在stm32f2xx_conf.h中添加。

1、  时钟设置：包括引脚时钟和外设时钟：

RCC_XXXPeriphClockCmd();

2、  引脚连接：即把引脚和外设功能进行连接；

GPIO_PinAFConfig();

如下功能需要引脚与外设连接。

  *    @arg GPIO_AF_RTC_50Hz

  *    @arg GPIO_AF_MCO

  *    @arg GPIO_AF_TAMPER

  *    @arg GPIO_AF_SWJ

  *    @arg GPIO_AF_TRACE

  *    @arg GPIO_AF_TIM1

  *    @arg GPIO_AF_TIM2

  *    @arg GPIO_AF_TIM3

  *    @arg GPIO_AF_TIM4

  *    @arg GPIO_AF_TIM5

  *    @arg GPIO_AF_TIM8

  *    @arg GPIO_AF_TIM9

  *    @arg GPIO_AF_TIM10

  *    @arg GPIO_AF_TIM11

  *    @arg GPIO_AF_I2C1

  *    @arg GPIO_AF_I2C2

  *    @arg GPIO_AF_I2C3

  *    @arg GPIO_AF_SPI1

  *    @arg GPIO_AF_SPI2

  *    @arg GPIO_AF_SPI3

  *    @arg GPIO_AF_USART1

  *    @arg GPIO_AF_USART2

  *    @arg GPIO_AF_USART3

  *    @arg GPIO_AF_UART4

  *    @arg GPIO_AF_UART5

  *    @arg GPIO_AF_USART6

  *    @arg GPIO_AF_CAN1

  *    @arg GPIO_AF_CAN2

  *    @arg GPIO_AF_TIM12

  *    @arg GPIO_AF_TIM13

  *    @arg GPIO_AF_TIM14

  *    @arg GPIO_AF_OTG1_FS

  *    @arg GPIO_AF_OTG2_HS

  *    @arg GPIO_AF_ETH

  *    @arg GPIO_AF_FSMC

  *    @arg GPIO_AF_OTG2_FS

  *    @arg GPIO_AF_SDIO

  *    @arg GPIO_AF_DCMI

  *    @arg GPIO_AF_EVENTOUT

3、  初始化GPIO配置：

GPIO_Init();

4、  外设初始化：

如UART初始化如下：

USART_InitStructure.USART_BaudRate = 115200;1 z4 |. S, @% g* n- M
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USART_InitStructure.USART_WordLength = USART_WordLength_8b;! @' t; Y' m7 N9 |: S' z" g
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USART_InitStructure.USART_StopBits = USART_StopBits_1;
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USART_InitStructure.USART_Parity = USART_Parity_No;5 Z$ T1 m! T7 Q* Y$ {" g% a
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USART_InitStructure.USART_HardwareFlowControl = USART_HardwareFlowControl_None;& Q/ W: [/ K& O# l
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USART_InitStructure.USART_Mode = USART_Mode_Rx | USART_Mode_Tx;8 |' r4 [, A0 n9 K$ D/ s0 Y' F' Q
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USART_Init(USARTx, &USART_InitStructure)；

复制代码

ADC初始化如下：（多路模式）

// DMA1_Stream0 channel0 configuration **************************************/$ B- J3 }6 o1 u
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DMA_DeInit(DMA2_Stream0);1 o$ I3 W) } l0 G7 o
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DMA_InitStructure.DMA_Channel = DMA_Channel_0;
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DMA_InitStructure.DMA_PeripheralBaseAddr = (uint32_t)ADC1_DR_ADDRESS; //定义外设基址
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DMA_InitStructure.DMA_Memory0BaseAddr = (uint32_t)&ADCConvertedValue; //定义寄存器基址& Q5 o3 y# [: L
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DMA_InitStructure.DMA_DIR = DMA_DIR_PeripheralToMemory; //定义DMA传输模式从外设到内存
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DMA_InitStructure.DMA_BufferSize = 4; //定义buffer大小，根据通道数来定
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DMA_InitStructure.DMA_PeripheralInc = DMA_PeripheralInc_Disable; //外设地址寄存器不变$ e" I! D: _" M5 F' z
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DMA_InitStructure.DMA_MemoryInc = DMA_MemoryInc_Enable; //DMA寄存器随之增加（单通道不增加）1 B2 c+ d& E0 B/ B1 h2 J$ ^. k
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DMA_InitStructure.DMA_PeripheralDataSize = DMA_PeripheralDataSize_HalfWord; //DMA外设数据大小，16位半字' s' s# A* g5 s8 {1 H) V4 K
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DMA_InitStructure.DMA_MemoryDataSize = DMA_MemoryDataSize_HalfWord; //DMA存储器数据大小，16位半字0 {$ S" a5 @0 v' u( a
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DMA_InitStructure.DMA_Mode = DMA_Mode_Circular; //模式为循环模式6 E% y/ \* E5 W) S
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DMA_InitStructure.DMA_Priority = DMA_Priority_High; //DMA优先级高
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DMA_InitStructure.DMA_DirectMode = DMA_DirectMode_Disable; //直接传输模式无效 DMA_InitStructure.DMA_FifoThreshold = DMA_FifoThreshold_HalfFull;
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DMA_InitStructure.DMA_MemoryBurst = DMA_MemoryBurst_Single;& O5 s2 g2 N( k+ a
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DMA_InitStructure.DMA_PeripheralBurst = DMA_PeripheralBurst_Single;0 o t# D Y9 G5 O* _3 R0 o, G2 c
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DMA_Init(DMA2_Stream0, &DMA_InitStructure);

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//************ DMA2_Stream0 enable ************/" }" n/ [: [5 X P& B8 ~4 Q+ I( Z
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DMA_Cmd(DMA2_Stream0, ENABLE); //使能DMA流0

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//***************** ADCs DeInit ***************/
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ADC_DeInit(); //ADC重初始化

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//************* ADC Common Init ****************/
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ADC_CommonInitStructure.ADC_Mode = ADC_Mode_Independent; //ADC独立模式
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ADC_CommonInitStructure.ADC_Prescaler = ADC_Prescaler_Div2; //ADC采样周期2分频 D0 X \# ]1 j9 |3 W
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ADC_CommonInitStructure.ADC_DMAAccessMode = ADC_DMAAccessMode_Disabled;2 i+ r, P2 p5 R8 B2 L" g1 `: h4 r
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ADC_CommonInitStructure.ADC_TwoSamplingDelay = ADC_TwoSamplingDelay_5Cycles; //采样周期6 `6 x% {/ y, P! \$ {
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ADC_CommonInit(&ADC_CommonInitStructure); //基本初始化

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//*************** ADC1 Init ********************/6 l6 q, \+ \7 ?' A. _! d
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ADC_InitStructure.ADC_Resolution = ADC_Resolution_12b; //ADC采样精度# S) v$ A4 t0 j& y
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ADC_InitStructure.ADC_ScanConvMode = ENABLE; //采用扫描模式，因为多路
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ADC_InitStructure.ADC_ContinuousConvMode = ENABLE; //连续扫描模式1 @- }- n/ j3 g' I
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ADC_InitStructure.ADC_ExternalTrigConvPolarity = ADC_ExternalTrigConvPolarity_None;//无外部触发
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ADC_InitStructure.ADC_DataAlign = ADC_DataAlign_Right; //数据右对齐
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ADC_InitStructure.ADC_NbrOfChannel = 4; //采样通道数# M2 K3 ` c; W: O
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ADC_Init(ADC1, &ADC_InitStructure);

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//************ ADC1 regular channel12 configuration ************/
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ADC_RegularChannelConfig(ADC1, ADC_Channel_4, 1, ADC_SampleTime_3Cycles);5 c/ q( N( a0 [. P
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ADC_RegularChannelConfig(ADC1, ADC_Channel_5, 2, ADC_SampleTime_3Cycles);! E8 k# E. i8 h5 e
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ADC_RegularChannelConfig(ADC1, ADC_Channel_6, 3, ADC_SampleTime_3Cycles);
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ADC_RegularChannelConfig(ADC1, ADC_Channel_7, 4, ADC_SampleTime_3Cycles);

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//********* Enable DMA request after last transfer (Multi-ADC mode) *********/ @& O1 D6 n" j3 c5 F6 `
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ADC_DMARequestAfterLastTransferCmd(ADC1, ENABLE);

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//*********** Enable ADC1 DMA ****************/
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ADC_DMACmd(ADC1, ENABLE);
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//*************** Enable ADC1 ***************/, X, l. K' i5 g( u I' F
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ADC_Cmd(ADC1, ENABLE);

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//******* Start ADC1 Software Conversion *****/
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ADC_SoftwareStartConv(ADC1); //软启动开始采样

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5、中端配置：

以下为串口中断配置：

void NVIC_Configuration(void)
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{
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NVIC_InitTypeDef NVIC_InitStructure;- t6 d# F' w) Z
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/* Configure the NVIC Preemption Priority Bits */
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/* Configure one bit for preemption priority */ N: i% b% M0 F. g! q
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/* 优先级组说明了抢占优先级所用的位数，和子优先级所用的位数在这里是1， 7 */
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NVIC_PriorityGroupConfig(NVIC_PriorityGroup_0);
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/* Enable the USART1 Interrupt */5 \) Q) K, m+ V! o" m4 {
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NVIC_InitStructure.NVIC_IRQChannel = UART5_IRQn; //设置串口5中断
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NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0; //抢占优先级 03 B2 y) L' g7 O
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NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0; //子优先级为0
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NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE; //使能) o5 M& S; K* d3 F' C; q
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NVIC_Init(&NVIC_InitStructure);# _3 o& l3 }/ j0 k
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}
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USART_ITConfig(USART1, USART_IT_RXNE, ENABLE); //使能接收中断8 [& ~, r; D1 @" G- Z1 j! X
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USART_ITConfig(USART1, USART_IT_TXE, ENABLE); //使能发送缓冲空中断5 ~4 _9 S }0 e; t) R
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USART_ITConfig(USART1, USART_IT_TC, ENABLE); //使能发送完成中断
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