本帖最后由 lilijin1995 于 2022-3-10 16:52 编辑
chv32v103C8T6的USART1配置接收中断后,测试没有进入接收中断程序;
- /********************************** (C) COPYRIGHT *******************************
- * File Name : main.c
- * Author : WCH
- * Version : V1.0.0
- * Date : 2020/04/30
- * Description : Main program body.
- *******************************************************************************/
- /*
- *@Note
- USART中断例程:
- Master:USART2_Tx(PA2)、USART2_Rx(PA3)。
- Slave:USART3_Tx(PB10)、USART3_Rx(PB11)。
-
- 本例程演示 UART2 和 USART3 使用查询发送,中断接收。
- 注:
- 硬件连线:PA2 —— PB11
- PA3 —— PB10
- */
- #include "debug.h"
- /* Global define */
- #define TxSize1 (size(TxBuffer1))
- #define TxSize2 (size(TxBuffer2))
- #define size(a) (sizeof(a) / sizeof(*(a)))
- /* Global typedef */
- typedef enum { FAILED = 0, PASSED = !FAILED} TestStatus;
- /* Global Variable */
- u8 TxBuffer1[] = "*Buffer1 Send from USART2 to USART3 using Interrupt!"; /* Send by UART2 */
- u8 TxBuffer2[] = "#Buffer2 Send from USART3 to USART2 using Interrupt!"; /* Send by UART3 */
- u8 RxBuffer1[TxSize1]={0}; /* USART2 Using */
- u8 RxBuffer2[TxSize2]={0}; /* USART3 Using */
- u8 TxCnt1 = 0, RxCnt1 = 0;
- u8 TxCnt2 = 0, RxCnt2 = 0;
- u8 Rxfinish1=0,Rxfinish2=0;
- TestStatus TransferStatus1 = FAILED;
- TestStatus TransferStatus2 = FAILED;
- void USART1_IRQHandler(void) __attribute__((interrupt("WCH-Interrupt-fast")));
- void USART3_IRQHandler(void) __attribute__((interrupt("WCH-Interrupt-fast")));
- /*******************************************************************************
- * Function Name : Buffercmp
- * Description : Compares two buffers
- * Input : Buf1,Buf2:buffers to be compared
- * BufferLength: buffer's length
- * Return : PASSED: Buf1 identical to Buf2
- * FAILED: Buf1 differs from Buf2
- *******************************************************************************/
- TestStatus Buffercmp(uint8_t* Buf1, uint8_t* Buf2, uint16_t BufLength)
- {
- while(BufLength--)
- {
- if(*Buf1 != *Buf2)
- {
- return FAILED;
- }
- Buf1++;
- Buf2++;
- }
- return PASSED;
- }
- /*******************************************************************************
- * Function Name : USARTx_CFG
- * Description : Initializes the USART2 & USART3 peripheral.
- * Input : None
- * Return : None
- *******************************************************************************/
- void USARTx_CFG(void)
- {
- GPIO_InitTypeDef GPIO_InitStructure;
- USART_InitTypeDef USART_InitStructure;
- NVIC_InitTypeDef NVIC_InitStructure;
- RCC_APB1PeriphClockCmd(RCC_APB1Periph_USART2|RCC_APB1Periph_USART3, ENABLE);
- RCC_APB2PeriphClockCmd(RCC_APB2Periph_USART1|RCC_APB2Periph_GPIOA |RCC_APB2Periph_GPIOB , ENABLE);
- GPIO_InitStructure.GPIO_Pin = GPIO_Pin_9;
- GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
- GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;
- GPIO_Init(GPIOA, &GPIO_InitStructure);
- GPIO_InitStructure.GPIO_Pin = GPIO_Pin_10;
- GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING;
- GPIO_Init(GPIOA, &GPIO_InitStructure);
- /* USART3 TX-->B.10 RX-->B.11 */
- GPIO_InitStructure.GPIO_Pin = GPIO_Pin_10;
- GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
- GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;
- GPIO_Init(GPIOB, &GPIO_InitStructure);
- GPIO_InitStructure.GPIO_Pin = GPIO_Pin_11;
- GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING;
- GPIO_Init(GPIOB, &GPIO_InitStructure);
- USART_InitStructure.USART_BaudRate = 115200;
- USART_InitStructure.USART_WordLength = USART_WordLength_8b;
- USART_InitStructure.USART_StopBits = USART_StopBits_1;
- USART_InitStructure.USART_Parity = USART_Parity_No;
- USART_InitStructure.USART_HardwareFlowControl = USART_HardwareFlowControl_None;
- USART_InitStructure.USART_Mode = USART_Mode_Tx | USART_Mode_Rx;
- USART_Init(USART1, &USART_InitStructure);
- USART_ITConfig(USART1, USART_IT_RXNE, ENABLE);
- USART_Init(USART3, &USART_InitStructure);
- USART_ITConfig(USART3, USART_IT_RXNE, ENABLE);
- NVIC_InitStructure.NVIC_IRQChannel = USART1_IRQn;
- NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority=1;
- NVIC_InitStructure.NVIC_IRQChannelSubPriority = 1;
- NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
- NVIC_Init(&NVIC_InitStructure);
- NVIC_InitStructure.NVIC_IRQChannel = USART3_IRQn;
- NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority=2;
- NVIC_InitStructure.NVIC_IRQChannelSubPriority = 2;
- NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
- NVIC_Init(&NVIC_InitStructure);
- USART_Cmd(USART1, ENABLE);
- USART_Cmd(USART3, ENABLE);
- }
- /*******************************************************************************
- * Function Name : main
- * Description : Main program.
- * Input : None
- * Return : None
- *******************************************************************************/
- int main(void)
- {
- NVIC_PriorityGroupConfig(NVIC_PriorityGroup_2);
- Delay_Init();
- USART_Printf_Init(115200);
- printf("SystemClk:%d\r\n",SystemCoreClock);
- printf("USART Interrupt TEST\r\n");
- USARTx_CFG(); /* USART2 & USART3 INIT */
- while(1)
- {
- }
- }
- /*******************************************************************************
- * Function Name : USART2_IRQHandler
- * Description : This function handles USART2 global interrupt request.
- * Input : None
- * Return : None
- *******************************************************************************/
- void USART1_IRQHandler(void)
- {
- if(USART_GetITStatus(USART1, USART_IT_RXNE) != RESET)
- {
- // RxBuffer1[RxCnt1++] = USART_ReceiveData(USART1);
- printf("R");
- // if(RxCnt1 == TxSize2)
- // {
- // USART_ITConfig(USART2, USART_IT_RXNE, DISABLE);
- // Rxfinish1=1;
- // }
- }
- }
- /*******************************************************************************
- * Function Name : USART3_IRQHandler
- * Description : This function handles USART3 global interrupt request.
- * Input : None
- * Return : None
- *******************************************************************************/
- void USART3_IRQHandler(void)
- {
- if(USART_GetITStatus(USART3, USART_IT_RXNE) != RESET)
- {
- RxBuffer2[RxCnt2++] = USART_ReceiveData(USART3);
- if(RxCnt2 == TxSize1)
- {
- USART_ITConfig(USART3, USART_IT_RXNE, DISABLE);
- Rxfinish2=1;
- }
- }
- }
另外debug中配置usart2打印log,我们main函数中声明了中断;
void USART1_IRQHandler(void) __attribute__((interrupt("WCH-Interrupt-fast")));
但通过测试,始终无法进入USART1_IRQHandler的接收中断;补充一下,是通过串口调试工具的TX发到USART1的RX的,然后通过USART2的TX打印log
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