1.串口1 USART1初始化 [注意使能接收中断]
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- * @brief USART1 Initialization Function
& h: v/ p- E8 @% u - * @param None
' [0 H4 h P( K - * @retval None
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- UART_HandleTypeDef huart1;9 W/ U, j5 U1 @& c* _' l g
- void MX_USART1_UART_Init(void)1 q% D4 m; g5 r
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- huart1.Instance = USART1;
m. K1 n- d8 o4 [; K* h: O0 J - huart1.Init.BaudRate = 115200;. w1 a# l5 d" S: o* n* V" s, N, \
- huart1.Init.WordLength = UART_WORDLENGTH_8B;
/ p+ V) y% o% e+ H - huart1.Init.StopBits = UART_STOPBITS_1;
' ]1 \/ m4 {) Q) p; z: V, M& w - huart1.Init.Parity = UART_PARITY_NONE;3 k0 B# k% E# L4 Z4 I
- huart1.Init.Mode = UART_MODE_TX_RX;
, p) E0 E+ _2 M& j. x - huart1.Init.HwFlowCtl = UART_HWCONTROL_NONE;6 n# q9 E: B! o, i+ M
- huart1.Init.OverSampling = UART_OVERSAMPLING_16;
& k4 W( b; U0 m- c - huart1.Init.OneBitSampling = UART_ONE_BIT_SAMPLE_DISABLE;; p \6 |* S! H8 x
- huart1.AdvancedInit.AdvFeatureInit = UART_ADVFEATURE_NO_INIT;
2 L1 N( }: I3 p" o7 X3 b - if (HAL_UART_Init(&huart1) != HAL_OK)! I3 L* B& O _5 w6 c# G
- {
, ?' u) ]5 s Y. s - Error_Handler();7 {0 ?) F' K% ^, j5 B( q0 O
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- //使能接收中断' T/ \0 E. ^4 x c6 Y+ K
- HAL_UART_Receive_IT(&huart1,usart1_RxBuf_temp,1); // Enable the USART1 Interrupt
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4 {* @6 c0 V2 a6 A5 d! `$ S. J2.串口接收中断2 B; J' y7 {# t! d6 z( w
- /**
1 {' G, |$ d L, H - * @brief This function handles USART1 global interrupt / USART1 wake-up interrupt through EXTI line 25.. P: i7 R2 x9 L& d
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- void USART1_IRQHandler(void)* l/ o; u7 E9 H5 c
- {
- H* @8 j; B A& g - HAL_UART_IRQHandler(&huart1);
% N' D/ C U3 V" Q- V - }
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* ~9 {5 v3 |& L$ L( U3.串口接收中断完成回调函数
* ~+ @6 u6 i4 i8 y K" m- /**
$ y5 J; G E; ^; m. P- K - * @brief Rx Transfer completed callback
% M8 Q2 F) ?! E. o- B - * @param UartHandle: UART handle8 P8 A ~/ r0 r! A5 O
- * @note This example shows a simple way to report end of IT Rx transfer, and
* ^) Q |# ?. J2 Q - * you can add your own implementation.
& l- Z+ C( M+ b# ]9 [% p7 d; j - * @retval None/ H) c$ e+ q( j; `$ b3 t
- */
: C- [2 C6 j s9 l - void HAL_UART_RxCpltCallback(UART_HandleTypeDef *UartHandle)
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- if(UartHandle->Instance == USART1)0 _5 t- H2 l+ v
- {
7 X% M \ c) w* O - Netctrlp_Receive(usart1_RxBuf_temp[0]);+ D/ t/ V% s8 \& U; Y% s
- HAL_UART_Receive_IT(&huart1,usart1_RxBuf_temp,1); // 重新使能串口1接收中断7 u- O1 K4 X$ e5 q2 P' c: v7 t' t3 C
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- }
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/ ?0 n2 {* q, w& m R3 W% H$ Y4.重定向输入输出,将输出重定向至printf
; b0 N: l6 ?9 [, E% U% H7 u( p5 y- uint8_t ch;
8 }: i7 Q6 l8 f# o1 N8 r - uint8_t ch_r;4 f! K( @% Z+ Q9 v% \
- //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% Z' C& L, r6 v
- /*fputc*/
3 \, c: [6 K* h A - int fputc(int c, FILE * f)
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- ch=c;
. l- z- B' [" h/ F& q- q+ ^ - // HAL_UART_Transmit_IT(&huart1,&ch,1);//发送串口 `9 P# S0 v6 }! t
- HAL_UART_Transmit(&huart1,&ch,1,100);//发送串口& L7 j0 K0 Y1 O9 w6 |- O8 i: _3 |7 V
- return ch;4 A+ ?8 E" z$ ]( M- v. u
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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; i( X3 [1 P6 X0 A: }8 Y, c - /*fgetc*/4 B( H* z- q' G* d3 v! x6 N1 \
- int fgetc(FILE * F)
9 M; c2 W1 L6 Z% s9 w - {
/ w9 P+ _" y: @/ L - HAL_UART_Receive_IT(&huart1,&ch_r,1);//接收. ~$ z; O3 K+ P% ]; u5 n
- return ch_r;
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5.main.c 主函数7 X: c- ^! \9 @5 j2 q; f
- int main(void) //SLAVE
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- HAL_Init();
* U$ `, D( s" B& g# o- s. f; K - /* Configure the system clock */5 Q0 Y" F/ k* x5 {
- SystemClock_Config();
; _/ x3 k# ?) H9 N, V- y2 x - MX_USART1_UART_Init();& S9 D6 o" _+ {# h9 V
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- while(1){
; e3 g/ y9 c) `4 P9 Y$ ` - DBG_print(DBG_DEBUG, " A.");
/ `" h- { h" |. {, P - HAL_Delay(100);! ?3 a4 I( C! Z
- }
. [+ [5 ?# H, n - }
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