1.串口1 USART1初始化 [注意使能接收中断]" m4 t- c. B* G- f* |/ }
- /**
1 Z, a3 B1 n( A; W6 s - * @brief USART1 Initialization Function
6 a( v. n- S% C, \ - * @param None% ~8 J/ q$ a# w
- * @retval None+ J' B( M o' V
- */
; s6 v3 J; A; k- s - UART_HandleTypeDef huart1;9 D4 J0 y9 @+ M) {9 \
- void MX_USART1_UART_Init(void)
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+ P* {" ?6 A- C2 z+ k# H$ l - huart1.Instance = USART1;
. B7 c7 l' J c$ M* ~6 a - huart1.Init.BaudRate = 115200;
7 i+ F" O) c" D" a+ J - huart1.Init.WordLength = UART_WORDLENGTH_8B;0 X* P6 v% t4 r8 @+ b; P& U& v! `+ i: S
- huart1.Init.StopBits = UART_STOPBITS_1;- ?$ [2 h1 t5 r
- huart1.Init.Parity = UART_PARITY_NONE;
2 m# E3 X& u1 h0 |) [" l' V - huart1.Init.Mode = UART_MODE_TX_RX;
( P7 S4 T$ M: y5 ~3 n4 o- Z5 n - huart1.Init.HwFlowCtl = UART_HWCONTROL_NONE;
' O2 M, `' ]8 E0 l# ` - huart1.Init.OverSampling = UART_OVERSAMPLING_16;
) w/ ^0 t. R* G# O4 z# T$ o5 P" ] - huart1.Init.OneBitSampling = UART_ONE_BIT_SAMPLE_DISABLE;
+ ?. E- I2 j5 c - huart1.AdvancedInit.AdvFeatureInit = UART_ADVFEATURE_NO_INIT;, q: p! y: S1 _, V+ z! z
- if (HAL_UART_Init(&huart1) != HAL_OK)$ g& U0 k; F1 o2 w# Z! J8 y
- {
1 I. j5 e p" g - Error_Handler();: q: [5 I5 Y, E2 o8 M& K1 l
- }
8 A2 X! w1 K8 b6 E" U* a9 Q& _# a - //使能接收中断
8 `: Z+ ?" |$ A# p6 v ~ - HAL_UART_Receive_IT(&huart1,usart1_RxBuf_temp,1); // Enable the USART1 Interrupt$ G$ i j7 h4 z8 n0 T. s9 Y
- }
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2.串口接收中断; L) i/ n1 r2 s, V
- /**
! Z2 {: ^" N/ y8 x3 [6 n - * @brief This function handles USART1 global interrupt / USART1 wake-up interrupt through EXTI line 25.
- C1 ^' Z' ?. h' ?5 ? - */1 L; y! g% | A% x1 T
- void USART1_IRQHandler(void)
( L6 i+ C2 q' ]4 [- x/ Y9 @( w - {% g: T) P O+ I5 e, e- w5 }) |
- HAL_UART_IRQHandler(&huart1);
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/ A7 N) O6 I. r: }3.串口接收中断完成回调函数
2 m) P: M, M1 X- /**
/ W% H: S3 w. t M2 `7 R+ q# w7 _ - * @brief Rx Transfer completed callback6 M4 ~. n V7 C$ Z+ N
- * @param UartHandle: UART handle2 y: T) C+ B2 O
- * @note This example shows a simple way to report end of IT Rx transfer, and
3 d3 f' @6 d" X: ^! S7 [( G - * you can add your own implementation.
, ?5 g3 n! b/ x9 t- h - * @retval None
3 J3 Y: z3 @/ ?, C# W- w! Y - */
% g- o. b3 y7 G2 C' T1 S3 |- X - void HAL_UART_RxCpltCallback(UART_HandleTypeDef *UartHandle)" L6 ~* ^3 P, Z# Z1 d/ w* _( ~# y
- {
( G d* H6 W) P: O u. X - if(UartHandle->Instance == USART1)1 }1 M! m5 s3 f c: V9 @
- {
# T. a' S0 k! Z; U6 X. r- D - Netctrlp_Receive(usart1_RxBuf_temp[0]);
, |% X& Z, n9 i3 u5 @6 y" I - HAL_UART_Receive_IT(&huart1,usart1_RxBuf_temp,1); // 重新使能串口1接收中断* \0 k# [" R0 V; w v0 T9 H
- }
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4.重定向输入输出,将输出重定向至printf H4 a! Y" i1 k4 w+ Y
- uint8_t ch;
) ]4 d- {% q8 [ - uint8_t ch_r;0 ^* B/ O4 }, w! v! j9 o
- //重写这个函数,重定向printf函数到串口,意思就是说printf直接输出到串口,其默认输出到控制台的
! w$ N6 }( E$ k+ V2 n3 f - /*fputc*/
. Y. e) ? r; O( @0 n - int fputc(int c, FILE * f)/ ^2 R) J0 S: M$ \* a8 F& W
- {8 d; e8 Z r5 F' ~& Z
- ch=c;
& N; r& z! a, A* e( U5 \" B6 Q - // HAL_UART_Transmit_IT(&huart1,&ch,1);//发送串口
( x% A4 C9 L- w6 F( { - HAL_UART_Transmit(&huart1,&ch,1,100);//发送串口" W A, C6 z) ^ |6 z& d U
- return ch;/ R* c0 j* o( H; L" [) W H, Y
- }
3 X) W0 p2 O( e7 z: E" y
; c1 p# t; R1 m# s- i5 k" ]- //重定向scanf函数到串口 意思就是说接受串口发过来的数据,其默认是接受控制台的数据# a* ]9 F6 E! f$ m: @
- /*fgetc*/
, s: u; R, k- j$ V7 V) |) z - int fgetc(FILE * F) * \) C$ ^8 Q9 k4 M9 G' E
- {# M! [. F2 ~8 m( n6 f5 G
- HAL_UART_Receive_IT(&huart1,&ch_r,1);//接收
- R2 c) h9 c) j% _$ G$ n - return ch_r;
+ Z2 x6 A7 \1 g7 y' @4 ]3 ^' y - }
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5.main.c 主函数( `; y8 d0 N* ?1 N! a
- int main(void) //SLAVE
6 }3 M5 f% T7 C$ j/ F" q - {
9 r$ F+ F* U/ ~5 g* q' ? - HAL_Init();: q5 _1 W# ~6 K( B* g
- /* Configure the system clock */
7 I/ c( B$ P' c8 ^: b5 r - SystemClock_Config();
. h. q6 a4 I- F3 d3 n7 P - MX_USART1_UART_Init();" s0 [* Z2 a/ |# O1 q1 r( M
V- S! N3 @5 l2 X5 [- o- while(1){
2 a: s" J! {4 |" `0 b$ ~1 {5 q - DBG_print(DBG_DEBUG, " A.");
' d$ I9 L; C/ l7 k6 B" h - HAL_Delay(100);
: z( ]# u7 b! p* ^4 }, N+ _3 [ - }
* a3 [# u# j% l; B - }
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+ [1 u! U2 }# X7 o |