1.串口1 USART1初始化 [注意使能接收中断]- }' g9 s% x/ S
- /**) e/ b# \2 `$ r1 B4 q3 {
- * @brief USART1 Initialization Function U0 l, P" j+ C* |
- * @param None
8 Z1 i$ e; n& U2 Q. |, ` - * @retval None
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- UART_HandleTypeDef huart1;
4 x" c8 f( V/ _9 o9 E a/ e3 I+ F - void MX_USART1_UART_Init(void)2 a7 C, v/ I" ^8 ]
- {
" @$ b5 T P) i1 [' S - huart1.Instance = USART1;
4 N! p- F0 T# X/ V - huart1.Init.BaudRate = 115200;3 K, l7 J. ]# P* X
- huart1.Init.WordLength = UART_WORDLENGTH_8B;
, s% p( G$ N5 j) o+ O$ t! V4 } - huart1.Init.StopBits = UART_STOPBITS_1;% R5 V" \3 S% g! b2 _
- huart1.Init.Parity = UART_PARITY_NONE;
% F" r. E8 \$ [5 S! R4 j' @ - huart1.Init.Mode = UART_MODE_TX_RX; L4 }. P1 y) O1 S
- huart1.Init.HwFlowCtl = UART_HWCONTROL_NONE;
' m/ Y g* h% x' h - huart1.Init.OverSampling = UART_OVERSAMPLING_16;
v; N( w+ a7 w2 l - huart1.Init.OneBitSampling = UART_ONE_BIT_SAMPLE_DISABLE;3 v K$ T$ C# m2 G6 o
- huart1.AdvancedInit.AdvFeatureInit = UART_ADVFEATURE_NO_INIT;
( @3 o" o3 o' G3 l - if (HAL_UART_Init(&huart1) != HAL_OK)) K! V# g; a Z, [
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- Error_Handler();/ [/ v% G5 o- c# }4 H
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- //使能接收中断" f" E/ p% ?' h' U0 Z; ]
- HAL_UART_Receive_IT(&huart1,usart1_RxBuf_temp,1); // Enable the USART1 Interrupt
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2.串口接收中断
8 f% ~! G# _& w; c2 |3 r7 ]- /** {/ }: c2 @1 o
- * @brief This function handles USART1 global interrupt / USART1 wake-up interrupt through EXTI line 25.
1 }/ l. e; C4 | E+ q4 D - */
) A3 \( ]( Q/ n4 B, b8 [ - void USART1_IRQHandler(void)
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6 S3 E+ p' B8 @/ G' H - HAL_UART_IRQHandler(&huart1);8 o. l8 E% C- X1 Z
- }
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* B4 N1 X! F8 F" T3.串口接收中断完成回调函数! J' t- C5 V) p# E. [$ f& C+ {6 A
- /**
% w' @; a2 i ]/ S1 j9 w- X - * @brief Rx Transfer completed callback
8 R- y6 l; E) G' ^3 M7 g" w - * @param UartHandle: UART handle# [* _& n. k4 p- v( J
- * @note This example shows a simple way to report end of IT Rx transfer, and
1 j0 ^" d6 _- S$ H+ Y - * you can add your own implementation.
7 _7 m$ a. p: M* \% } - * @retval None6 E3 J$ d' w: v& F, ~6 \
- */
5 f" z( K, @( L6 K6 l- M - void HAL_UART_RxCpltCallback(UART_HandleTypeDef *UartHandle): e( c" T2 J4 v! C. k
- {
3 e8 [% `: s' U: S% g. T/ h8 ]! r - if(UartHandle->Instance == USART1)
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- Netctrlp_Receive(usart1_RxBuf_temp[0]);
6 U. b. r0 E Q. {" |5 A0 T+ U - HAL_UART_Receive_IT(&huart1,usart1_RxBuf_temp,1); // 重新使能串口1接收中断. N0 b8 ]& y( G& H, x. e9 o$ [ I: ]; S
- }
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+ O7 Z6 Q" M5 c+ b4.重定向输入输出,将输出重定向至printf
- v7 Y+ d9 R+ \) j- uint8_t ch;- ^0 Z4 ?# d+ S1 l& u/ z3 c
- uint8_t ch_r;7 d1 q4 l; H# I" J2 z
- //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, B) k! X! l k5 g' X$ f5 w
- /*fputc*/5 e: m' ~& | O5 y- t' y
- int fputc(int c, FILE * f)
+ M* l/ U- W9 j - {
' B2 U+ \# U, } - ch=c;- u. ]' o( V9 z9 Q
- // HAL_UART_Transmit_IT(&huart1,&ch,1);//发送串口* q+ \& |1 V! R1 n) }" \; d k, i
- HAL_UART_Transmit(&huart1,&ch,1,100);//发送串口5 ^' o+ [6 y; m# u& X0 w: [
- return ch;" C \3 |* K6 ?! _3 a/ Q( z
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?8 V8 N2 U1 B- d/ |+ v# @" c" h- //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5 o, {( x, h9 V2 w& t
- /*fgetc*/
4 X+ f" Y0 x* ?. H3 | [/ T2 Y$ F - int fgetc(FILE * F) - H+ a" ]! K5 _9 F% }5 ~. K' F
- {
8 d2 q' R% O2 d2 g5 Q$ v+ ^5 z - HAL_UART_Receive_IT(&huart1,&ch_r,1);//接收
7 v, w8 ]! h3 M" H - return ch_r;! Q$ o3 f2 j& W
- }
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: C) C+ p/ l* [5.main.c 主函数
3 w6 d' ]7 J) G% R* ]0 U- int main(void) //SLAVE, S/ ?- ?' W- T8 J
- {" [% k. `# o6 T- K2 p$ D
- HAL_Init();
+ [: Q1 o' v8 U+ h$ q. ] - /* Configure the system clock */7 W" g9 F7 U+ \, ]$ Y m
- SystemClock_Config();
5 L' m/ q% C6 u5 X y - MX_USART1_UART_Init();
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- while(1){
. [1 f; ^6 c2 D" G) |2 D- F$ j" T - DBG_print(DBG_DEBUG, " A.");: h8 E: A4 a2 d7 L/ q
- HAL_Delay(100);2 {. ]; F0 |# S0 y8 O7 W
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- }
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