最近为了学习HAL库和熟悉STM32CUBEIDE软件,用手上STM32F407板子做了小工程,里面包含有串口1,串口2的使用,定时器中断,EXTI,DAC输出,ADC的DMA读取和用SPI驱动的TFT彩屏显示。
4 C! n% H& T+ D C2 d% @2 y先放一张工程做好的图吧
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程序很简单,用CUBEMX初始化后,只需要自己写回调函数和主函数的部分,先看一下外设的CUBEMX初始化;2 V, U; i; @8 j1 l" L- q( t- q
(1)USART1和USART2: \ t9 z! J+ m
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两个串口的初始化是一样的这是设置的NVIC中断不同,后面放出工程的NVIC配置。8 f: N% f" V* U# ?/ C5 j
(2)TIM35 b" C8 ~! M. v" [) n
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定时器的配置要多一点,但只用定时器则比较简单
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! f' Y6 p* _# x; ?: ]ADC的DMA读取设置1 ^% o9 P8 @) M
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(4)DAC15 i0 w5 P" y) P3 H3 c* G3 T
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(5)SPI26 t8 Z9 A& j& f- I# ~/ `5 r* X8 X" K% ^5 f
4 y, A; l# W5 T(6)EXTI9 B8 h) f) y! q' z) i9 M
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(7)NVIC
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(8)GPIO
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所有的外设初始化配置完成了;
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' B$ S1 b. N( o下面看一下中断相应的回调函数,在HAL库中,写中断处理函数和标准库不同,我个人认为现在只需要在回调函数里写内容就行了,我们看一下HAL库里面的IRQ函数,比如HAL_GPIO_EXTI_IRQHandler(uint16_t GPIO_Pin)- void HAL_GPIO_EXTI_IRQHandler(uint16_t GPIO_Pin)8 J2 t) M/ X6 D% i" `
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- /* EXTI line interrupt detected */6 A# A: ? O! a: W3 F6 \8 w% S
- if(__HAL_GPIO_EXTI_GET_IT(GPIO_Pin) != RESET)
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- __HAL_GPIO_EXTI_CLEAR_IT(GPIO_Pin);
& _0 @0 Q+ U; o8 L' z+ E7 ^- B# t0 K - HAL_GPIO_EXTI_Callback(GPIO_Pin);; P! M- n. s/ h7 K1 K
- }
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- /**
! |7 }* W0 g, ?, A/ i7 ]9 G - * @brief EXTI line detection callbacks.
2 [5 j) f! `+ u6 D1 j9 o! G# Q4 K - * @param GPIO_Pin Specifies the pins connected EXTI line1 s) Y9 h1 H; _& ?; @) V
- * @retval None( {$ Z; l; N4 u
- */( @1 S) Z- V! C4 j
- __weak void HAL_GPIO_EXTI_Callback(uint16_t GPIO_Pin)* }7 l2 A, T" Y Z( H
- {
$ ~: i0 |* W2 q2 w - /* Prevent unused argument(s) compilation warning */2 g) [6 A% u+ q2 {, c- @
- UNUSED(GPIO_Pin);9 j( H" R$ C* o2 b3 B
- /* NOTE: This function Should not be modified, when the callback is needed,# t' {8 T2 L X+ K5 ^3 {
- the HAL_GPIO_EXTI_Callback could be implemented in the user file" R' _1 R) ?* ^6 b2 e( j2 q& o; {
- */
3 F0 _ e% ^( m7 `8 L/ n3 A! w - }
复制代码 HAL_GPIO_EXTI_IRQHandler(uint16_t GPIO_Pin)里面会调用 HAL_GPIO_EXTI_Callback(uint16_t GPIO_Pin)函数,而 HAL_GPIO_EXTI_Callback(uint16_t GPIO_Pin)是需要自己编写。
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" L' I0 g0 I* i x! { T(1)串口$ |7 Y) ~, G3 `3 b* v6 V, R
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- uint8_t RX_buff[RX_len];
2 h8 {% F, r! ~% X2 F, f1 W - uint8_t RX_temp=0;5 E3 E2 O, Q9 G% \9 n) t
- uint8_t RX_i=0;
* i p8 f$ v" [$ J2 _" U$ | _ - uint8_t RX2_temp=0;4 _! _2 F) c0 ]1 e& T
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- void HAL_UART_RxCpltCallback(UART_HandleTypeDef *huart)& L x+ |9 Z+ a
- {
6 B, v1 P1 q0 ] - // uint8_t buff[10];- I- G: G0 a( d/ {) E0 S) k
- if(huart->Instance==USART1)
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- //HAL_UART_Transmit(&huart1, &RX_temp, 1, 1);
2 X9 B6 t! W4 ~/ k8 L - if(RX_i>=RX_len)
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4 Y2 F. ^ @! G& c6 E; l2 D- e: ^ - RX_i=0;
, u0 R0 q) `' `4 U - HAL_UART_Transmit(&huart1, send_buff, sizeof(send_buff), 1);
+ v* ]. E! z3 G0 N, f - memset(RX_buff,0,sizeof(RX_buff));
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- {
6 U1 y1 I. ]) s - RX_buff[RX_i++]=RX_temp;. V; v6 d) d3 c$ e( O
- if((RX_buff[RX_i-1]=='\n')||(RX_buff[RX_i-2]=='\r'))" ]3 _! i" y; o6 @- `
- {
: f: K. \# K& o" m - HAL_UART_Transmit(&huart1, RX_buff, strlen(RX_buff), 10);//Timeout 不能太小,也不能太长
0 I& c0 E9 e8 ^! B+ X: \7 j9 i" Y - memset(RX_buff,0,sizeof(RX_buff));
! }9 P- `$ a/ [9 m7 _3 Y - RX_i=0;$ B- x+ m% R5 m4 n8 L
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- HAL_UART_Receive_IT(&huart1, &RX_temp, 1);. E5 H3 b) D* S1 t% A% W
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: X' z( p5 x5 k' r- D2 w& N1 F, \- C# X- if(huart->Instance==USART2)& C( J+ J% ]& K( _
- {
# W3 y1 w4 i) X# a - HAL_UART_Transmit(&huart2, &RX2_temp, 1, 10);
7 b$ ~8 m4 o- @4 ` - HAL_UART_Receive_IT(&huart2, &RX2_temp, 1);
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- }
复制代码 (2)TIM3定时器中断" e( H+ y1 Z* R( j) b" w
- void HAL_TIM_PeriodElapsedCallback(TIM_HandleTypeDef *htim)
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' N8 f. \7 \% K: c - if(htim->Instance=htim3.Instance)/ M8 p+ K. v4 w. h- J7 W
- {
; J$ E) `1 l. D9 E6 |8 ?# S - HAL_GPIO_TogglePin(LED1_GPIO_Port, LED1_Pin);
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复制代码 (3)EXTI中断: m. Q# F$ r7 O7 D8 { l
- void HAL_GPIO_EXTI_Callback(uint16_t GPIO_Pin)
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2 Z9 y4 ?* c# ?( R5 ?/ q' _1 c - HAL_Delay(100);4 V' J$ J Y( g
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- switch(GPIO_Pin)7 H7 L3 a4 J8 T
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- case WK_UP_Pin:
' v7 Z* P* ]. Q" ^9 W0 Z - if(HAL_GPIO_ReadPin(WK_UP_GPIO_Port,WK_UP_Pin) == 1): C5 w& j' e$ s, Y# j2 ?+ C' z0 t2 a
- {
7 I5 b0 l0 j# @ - HAL_GPIO_TogglePin(LED0_GPIO_Port, LED0_Pin);2 K; c O) k. x: o7 F
- DAC_Value=3299;8 a+ `7 x2 j+ u" l/ n0 b. e( G
- }
9 \+ U4 \ B9 ~& Q - break;
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5 _7 r3 k' H' H0 p8 i- case GPIO_PIN_2:
; | n( _* U& V7 i# ? - if(HAL_GPIO_ReadPin(GPIOE,GPIO_PIN_2) == 0)2 {) }- r( X% l# H5 G
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- HAL_GPIO_TogglePin(LED0_GPIO_Port, LED0_Pin);4 Y& X0 l Z& g: q/ U( w
- if(DAC_Value<3200) DAC_Value+=100;
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- }
3 R4 b7 @- D' G9 N: h& g - break;+ K% y0 B0 R1 W
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- case GPIO_PIN_3:
, J0 P0 v0 q- Y( N$ a( i! ^ - if(HAL_GPIO_ReadPin(GPIOE,GPIO_PIN_3) == 0)
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& D0 X, H' i& s) c# W/ }3 u0 I5 } - HAL_GPIO_TogglePin(LED0_GPIO_Port, LED0_Pin);! R1 G- x. L$ ^0 |+ Z d* f; t: p8 \
- if(DAC_Value>=100) DAC_Value-=100;! d9 b" s, j" _' J5 t
- }
6 p( B4 h4 {, P0 P9 O - break;
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- case GPIO_PIN_4:
( ?. h$ {& m5 ]1 g% |9 } - if(HAL_GPIO_ReadPin(GPIOE,GPIO_PIN_4) == 0)
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# C9 G( A7 G- Z - HAL_GPIO_TogglePin(LED0_GPIO_Port, LED0_Pin);
, b4 W& ~5 K2 I$ P - DAC_Value=0;/ U- B. Q& d. \& a: F
- }
8 P3 j, R; ~" } q& z - break;; }$ ^! {3 f3 w! h
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- }
复制代码 再看一下用SPI往LCD里面写数据的程序6 [% Z+ u# m7 h6 c
- uint8_t SPI_WriteByte(uint8_t Byte)7 A6 W" L8 Z0 [ O( N
- {
) s4 @) y. X/ |* L; Y% r - HAL_SPI_Transmit(&hspi2, &Byte, sizeof(Byte), 10);3 ^% j& _) b5 C. V' [2 m2 K, X
- }
复制代码 下面看一下主函数
& v! H; E2 w7 ?) q$ i. m, P- int main(void)
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- /* USER CODE BEGIN 1 */' s, \( S; B+ T) u" V( P; `
- uint8_t buff[50];1 ?, p* f k2 s* f5 e, s+ O T% h& y
) B3 h/ F8 z# b3 V, n1 }8 P# A5 F- /* USER CODE END 1 */) o/ T& _/ i0 B. o4 N" O
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3 G- E/ d: v4 A4 K- /* MCU Configuration--------------------------------------------------------*/
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- /* Reset of all peripherals, Initializes the Flash interface and the Systick. */
8 h' G; W) F3 w6 @6 d - HAL_Init();
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- /* USER CODE BEGIN Init */) x7 {! f; X* S" H6 ]
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- /* USER CODE END Init */, y) f4 ~) S/ d( I) v
' o" v5 F L0 c8 X: t: x- /* Configure the system clock */
/ g7 Q% n' q9 z& \+ H0 ]( N - SystemClock_Config();+ ~; r$ ] p- T6 l
1 `% ~1 ` x7 D- G! d5 H- /* USER CODE BEGIN SysInit */
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- /* USER CODE END SysInit */
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, Y3 G& t# |' T( O$ E7 Z- /* Initialize all configured peripherals */6 E4 I0 Q4 I6 U/ e
- MX_GPIO_Init();
9 U+ B0 _* a |" h, l( P) e% Z3 z& A+ i; X - MX_DMA_Init();0 K$ P- h& u6 Y; e: q' K
- MX_USART1_UART_Init();4 v+ H$ f. f1 {
- MX_TIM3_Init();" U9 y, E2 }2 h6 k4 G% a
- MX_ADC1_Init();
* h. U! V1 ?. c7 f) D - MX_DAC_Init();6 z# ~9 z9 @2 E8 |* Q
- MX_SPI2_Init();5 T/ I! \2 B. H1 t1 [* J
- MX_USART2_UART_Init();
6 d& o8 p$ {' W/ H W# m& ~8 b+ } - /* USER CODE BEGIN 2 */6 o$ q- ?) m: c* H
: {( O! f* x9 D* h* e- LCD_Init();
, d6 @8 j9 x1 h2 F$ I! @; |0 R - POINT_COLOR=RED;) D- l0 ^+ M' t9 p: [2 P- F0 _1 f
- LCD_ShowString(10, 50, 16, "Welcome come to My world",0);
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- //LCD_BL_SET;
( {1 F0 [, Q) ]: \5 k( u0 p - memset(RX_buff,0,RX_len);: w, c+ O- Q7 a' f
- HAL_UART_Receive_IT(&huart1, &RX_temp, 1);
9 S% A* U% [6 W9 j+ m; g - HAL_UART_Receive_IT(&huart2, &RX2_temp, 1);9 }% W9 ?& w9 z% z
. y5 H2 R8 H" e8 y! {1 r- HAL_TIM_Base_Start_IT(&htim3);
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- R4 v- G- y" c% q* m1 c- HAL_DAC_Start(&hdac, DAC_CHANNEL_1);. k! x& l" C- o# o
- HAL_ADC_Start_DMA(&hadc1, ADC_val, ADC_length);( R9 k4 {2 g; r( d( p
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- //HAL_DAC_SetValue(&hdac, DAC_CHANNEL_1, DAC_ALIGN_12B_R, 0x100);
5 h- A6 H, E- B( T* ? - DAC1_Set_Vol(DAC_Value);
: B9 @0 [7 O7 ^# C( m) E) _ - /* USER CODE END 2 */, v: k% p/ k5 e/ H
- ; |( f1 P4 l4 ^! x) e
- /* Infinite loop */
& s F4 ?( H! }8 ~- b) _5 R) t1 J - /* USER CODE BEGIN WHILE */: @4 d1 j7 p0 }0 ~/ a+ u; a: K
- while (1)+ B! l: I% _8 ^: c& \- m
- {
" Z) L7 h% x, T! r - /* USER CODE END WHILE */
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6 j+ ^+ A' O8 A- Y' b" v' ?) R- /* USER CODE BEGIN 3 */5 O( s6 R' e' `
- HAL_Delay(500);
' o( K* d. e f - DAC1_Set_Vol(DAC_Value);
7 I0 U4 ?% S+ }1 a) f" a5 A* t- Y/ [ - sprintf(buff,"S:ADC: %1.2f DAC:%4d\r\n",Get_ADC(),DAC_Value);
& c+ ?# y: c5 P3 I. _ M - LCD_ShowString(10, 70, 16, buff, 0);
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/ Q* G% ~3 V+ e; F8 J. F6 o- sprintf(buff,"S:DACG:%5d\r\n",HAL_DAC_GetValue(&hdac,DAC_CHANNEL_1));
% C4 ?2 |0 ` K% [% [ - LCD_ShowString(10, 90, 16, buff, 0);
% I$ b' b, w; F( c: p - HAL_UART_Transmit(&huart1, buff, strlen(buff), 10);
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- /* USER CODE END 3 */4 o# S+ m- \3 D1 t# z) N0 b
- }
复制代码 在STM32CUBEIDE中,想要调用sprintf()和printf()程序的话要在软件里设置一下
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- R# G0 g+ W) C" A& o# B! n(PS:软件里面也要选Debug模式,Release模式好像编译不了这两个函数) G3 D/ v9 }- v0 }# p
工程:Pro5.zip8 P5 n, n2 h1 Q
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