1.串口1 USART1初始化 [注意使能接收中断]8 i7 G8 ^6 `; l. E7 D7 f. x! r
- /**2 W& H8 k# O$ q0 \) T$ V/ y! v
- * @brief USART1 Initialization Function
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- G, M6 d7 j6 J8 ?* x3 y - UART_HandleTypeDef huart1;3 @' R- `& ]8 D1 l8 U, b& k0 M0 S& z
- void MX_USART1_UART_Init(void)' q2 h, z: Z' H4 B
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- huart1.Instance = USART1;& \! S/ S' ?: M" P5 x' l# B
- huart1.Init.BaudRate = 115200;9 j+ w3 ?3 ?" c" g
- huart1.Init.WordLength = UART_WORDLENGTH_8B;+ D3 F6 z8 r9 F+ l4 }$ M3 {- e
- huart1.Init.StopBits = UART_STOPBITS_1;
2 q- }& \- O- X% P3 l! _! T - huart1.Init.Parity = UART_PARITY_NONE;& {$ W8 f! F4 R$ F5 H
- huart1.Init.Mode = UART_MODE_TX_RX;
% Q$ Q2 v5 G6 d - huart1.Init.HwFlowCtl = UART_HWCONTROL_NONE;
( W) [6 | m, h, G - huart1.Init.OverSampling = UART_OVERSAMPLING_16;; l: P/ l5 c) |6 \( c7 x- f
- huart1.Init.OneBitSampling = UART_ONE_BIT_SAMPLE_DISABLE;
X5 Z. ?* i5 P/ `% l4 W" m - huart1.AdvancedInit.AdvFeatureInit = UART_ADVFEATURE_NO_INIT;
}9 J$ s2 U$ z% D$ d2 f - if (HAL_UART_Init(&huart1) != HAL_OK)8 h: P' c, P5 o1 ~3 x8 h5 p0 q
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- Error_Handler();6 {1 K- C3 ?* r! W, p
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- //使能接收中断
2 ]* r3 l1 t+ x5 l. @) z3 t0 R - HAL_UART_Receive_IT(&huart1,usart1_RxBuf_temp,1); // Enable the USART1 Interrupt* Q. W+ }0 w6 y, z8 E$ B4 t
- }
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2.串口接收中断! m4 _' U& T# z
- /**- ?) |8 u& z! M1 F5 {' D
- * @brief This function handles USART1 global interrupt / USART1 wake-up interrupt through EXTI line 25.
# S9 k4 D9 A/ ^" b6 U - */
* n: @# o# f+ D& q2 Z9 \9 U - void USART1_IRQHandler(void); W9 s6 b5 O: ^1 F" Z4 Q
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- HAL_UART_IRQHandler(&huart1);
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% J' y6 G7 E/ t( F& E$ t' S7 f+ f- /**
0 E0 _/ N1 @, t" s - * @brief Rx Transfer completed callback- |" b3 z3 R4 N- d' R" g, d( c6 f* ^
- * @param UartHandle: UART handle+ m1 _4 g- ~6 H5 e5 v0 }. r
- * @note This example shows a simple way to report end of IT Rx transfer, and $ f) j4 @/ d8 G1 E# S
- * you can add your own implementation.% G& E. m& N2 Q! n- i" P
- * @retval None
6 j6 |6 H3 M2 T# ?( L - */. `8 b" j3 ^6 R$ C# x/ w# T
- void HAL_UART_RxCpltCallback(UART_HandleTypeDef *UartHandle): y* L6 N! x( ^: P1 p2 L
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- if(UartHandle->Instance == USART1)
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& T, A- S2 ]4 I5 D) O9 c5 M - Netctrlp_Receive(usart1_RxBuf_temp[0]);0 z# k! X& g, G' H! ~2 C
- HAL_UART_Receive_IT(&huart1,usart1_RxBuf_temp,1); // 重新使能串口1接收中断
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# t8 p" g. t6 Q$ a7 I- d$ h4.重定向输入输出,将输出重定向至printf
1 g! x8 R e! p; R- G1 |- uint8_t ch;
2 U$ |+ g# M5 W4 O) a7 n - uint8_t ch_r;
; U$ M* y) N7 B# t( N5 } - //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
/ n* P3 l6 }. K" Z& W - /*fputc*/
5 }( t3 Q8 k! _1 H - int fputc(int c, FILE * f)
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" {% e9 A: [! A6 M5 z - ch=c;/ H. S0 h$ t7 G) a7 X" ?9 g* Q
- // HAL_UART_Transmit_IT(&huart1,&ch,1);//发送串口( p) g8 N+ B3 l8 p
- HAL_UART_Transmit(&huart1,&ch,1,100);//发送串口% m9 }7 x" Y# |2 ~
- return ch;
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- //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
. x. z! v! w, N - /*fgetc*/$ `8 k$ K$ j7 |$ Q
- int fgetc(FILE * F) ! }" K. m1 l$ W6 W% u8 O
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- HAL_UART_Receive_IT(&huart1,&ch_r,1);//接收
& { D4 O- ~9 t v7 h: F# h. B - return ch_r;' V( X9 a( p* {' q9 J3 v
- }
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5.main.c 主函数4 D) {8 ~4 j# i: R _
- int main(void) //SLAVE
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- HAL_Init();) B" ^6 r. e0 G. f9 Y% f, }& G
- /* Configure the system clock */( e% k. |. Y* d( o
- SystemClock_Config();( J1 g2 _4 Y4 x8 H7 M
- MX_USART1_UART_Init();: W& ~$ [4 c1 F7 J
4 T- l- a' L5 l W1 c5 R7 H- while(1){: L& Z1 n( C+ P9 o$ q& x( Y
- DBG_print(DBG_DEBUG, " A.");
1 e, M( E' Q5 a - HAL_Delay(100);
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