1.串口1 USART1初始化 [注意使能接收中断]
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- * @brief USART1 Initialization Function
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- */
5 W+ |1 o5 J- Z3 G - UART_HandleTypeDef huart1;% F6 p H& G% {* f" X& w' c2 H3 ^. W
- void MX_USART1_UART_Init(void)3 N/ ]7 M' G' K
- {- A6 w0 Z0 _: @5 J
- huart1.Instance = USART1;4 B/ i9 w5 w7 @: e' T- N
- huart1.Init.BaudRate = 115200;: e0 x. k! y% |1 t! \
- huart1.Init.WordLength = UART_WORDLENGTH_8B;, ?' w4 I9 d; M8 V% j! _
- huart1.Init.StopBits = UART_STOPBITS_1;( P8 Z; j1 E; f/ S! r& M7 ?6 o. ?/ g( ]
- huart1.Init.Parity = UART_PARITY_NONE;9 G; B7 t! R( c' j o9 c: Z( K
- huart1.Init.Mode = UART_MODE_TX_RX;; X) d( p2 W( l G% G
- huart1.Init.HwFlowCtl = UART_HWCONTROL_NONE;0 j# c0 X) `- r2 I& Q
- huart1.Init.OverSampling = UART_OVERSAMPLING_16;
0 i6 ]" F7 \* o2 w% b, o) @ - huart1.Init.OneBitSampling = UART_ONE_BIT_SAMPLE_DISABLE;
+ ~. `5 }$ r1 s' _ - huart1.AdvancedInit.AdvFeatureInit = UART_ADVFEATURE_NO_INIT;& R' X6 d9 @9 R' o) t; J
- if (HAL_UART_Init(&huart1) != HAL_OK)5 B- n6 p% l1 e, U# d% L- T
- {
! V- Y( |! S$ f# E* h - Error_Handler();
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- //使能接收中断
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- }
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9 q7 {8 K& b8 f; \. V2.串口接收中断1 g! K4 Q- k- J( }7 `0 b: ~
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- * @brief This function handles USART1 global interrupt / USART1 wake-up interrupt through EXTI line 25.& v/ v$ a$ T3 _. L0 P6 {
- */
# v7 ?9 Z1 j% S1 C - void USART1_IRQHandler(void)
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- HAL_UART_IRQHandler(&huart1);- G# { h3 c: w, o$ i2 k% \3 o7 c
- }
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: C; Z4 t) |" t; B+ R, g) ?3.串口接收中断完成回调函数
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- * @brief Rx Transfer completed callback' `! N+ U# ]5 u4 y
- * @param UartHandle: UART handle: g8 t5 h- _1 e+ K/ f
- * @note This example shows a simple way to report end of IT Rx transfer, and . W! [4 g1 L, O% ?
- * you can add your own implementation.# e8 P0 f# Z, v* K2 i
- * @retval None
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- void HAL_UART_RxCpltCallback(UART_HandleTypeDef *UartHandle)9 _- y1 w7 G7 i. v/ p% y
- {- |! Q) ^1 ~7 w7 M3 ^' g8 a) t, e
- if(UartHandle->Instance == USART1)
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- Netctrlp_Receive(usart1_RxBuf_temp[0]);1 m) f& a3 r6 x8 c
- HAL_UART_Receive_IT(&huart1,usart1_RxBuf_temp,1); // 重新使能串口1接收中断/ V, S3 c0 Q( M6 F
- }
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4.重定向输入输出,将输出重定向至printf* }; K; T( Z9 ?) J4 r
- uint8_t ch;8 ~, Q( S! t: [, t0 S- S8 h% \
- uint8_t ch_r;
. Q% Y- Z& v# {6 G6 e; L" M6 P - //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
: o- B6 S+ s( A; h' p - /*fputc*/% O% P3 b; X+ ^+ i
- int fputc(int c, FILE * f)* U7 P+ t+ a, U$ `7 L
- {
1 U& a3 v0 `* o3 E$ G2 s6 P6 F' O - ch=c;
3 k1 C5 _2 A8 Y* h- ^! g - // HAL_UART_Transmit_IT(&huart1,&ch,1);//发送串口
2 G& r; E7 J$ P! ? n2 ?6 O8 b) K) N - HAL_UART_Transmit(&huart1,&ch,1,100);//发送串口
+ h! Q# c0 h) f3 e/ B3 i - return ch;9 B# D: E6 @9 y4 {" E( c8 G
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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
; q, |, [2 O7 |- d2 K5 M& M - /*fgetc*/' ~ F% o* o- H! }( W
- int fgetc(FILE * F)
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, w- P4 D! |2 c - HAL_UART_Receive_IT(&huart1,&ch_r,1);//接收, O& A- Q" b. W# W# n' G% x
- return ch_r;
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5.main.c 主函数
7 u5 v0 H( {! S- int main(void) //SLAVE+ R% ?! T$ ~; L
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- HAL_Init();
1 p7 l/ M0 @7 A+ { - /* Configure the system clock */ k; f, c% k; ]- i2 c' ?: a4 x
- SystemClock_Config();9 O2 m& ~" G3 P% y" ~' @
- MX_USART1_UART_Init();# ?$ b( g1 g8 J' _ @
( G% R# F5 C9 r. O2 D- while(1){/ d" A9 Z1 S' f9 |6 T
- DBG_print(DBG_DEBUG, " A.");
- _1 ~3 v7 L1 Y7 b+ ^ - HAL_Delay(100);' I: B5 a: C! [* G# {' t
- }
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