tomasjinn 发表于 2017-3-24 16:40:38

stm32 ucosIII中使用USART1，USART2，USART3三个串口中断有问题

最近研究uCOSIII，但是今天在同时用三个串口得时候发现配置好之后三个串口发数据没有问题，USART1接收中断正常，USART2和3不能进入中断，调试跟了一下接收到数据后USART1直接到中断服务函数里，USART2和3都不能进到中断服务函数里，下面附上配置USART1-3得配置代码，各位帮忙看下GPIO_InitTypeDef GPIO_InitStructure;
        USART_InitTypeDef USART_InitStructure;
        NVIC_InitTypeDef NVIC_InitStructure;
       
        RCC_APB2PeriphClockCmd(RCC_APB2Periph_USART1|RCC_APB2Periph_GPIOA|RCC_APB2Periph_GPIOB,ENABLE);       
        RCC_APB1PeriphClockCmd(RCC_APB1Periph_USART2|RCC_APB1Periph_USART3,ENABLE);
        USART_DeInit(USART1);//¸´Î»´®¿Ú123
        USART_DeInit(USART2);
        USART_DeInit(USART3);
       
                GPIO_InitStructure.GPIO_Pin = GPIO_Pin_9 | GPIO_Pin_2;
    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_Pin_3;
    GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING;
    GPIO_Init(GPIOA, &GPIO_InitStructure);
       
                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);

   //Usart1 NVIC ÅäÖÃ

NVIC_InitStructure.NVIC_IRQChannel = USART1_IRQn;
        NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority=3 ;//ÇÀÕ¼ÓÅÏȼ¶3
        NVIC_InitStructure.NVIC_IRQChannelSubPriority = 3;                //×ÓÓÅÏȼ¶3
        NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;                        //IRQͨµÀʹÄÜ
        NVIC_Init(&NVIC_InitStructure);        //¸ù¾ÝÖ¸¶¨µÄ²ÎÊý³õʼ»¯VIC¼Ä´æÆ÷
       
       //USART ³õʼ»¯ÉèÖÃ
        USART_InitStructure.USART_BaudRate = USART1BaudRate;
        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_Rx | USART_Mode_Tx;       
       
       USART_Init(USART1, &USART_InitStructure);
   USART_ITConfig(USART1, USART_IT_RXNE, ENABLE);
   USART_Cmd(USART1, ENABLE);   
       
       
        NVIC_InitStructure.NVIC_IRQChannel = USART2_IRQn;
        NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority=3 ;
        NVIC_InitStructure.NVIC_IRQChannelSubPriority = 1;       
        NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;               
        NVIC_Init(&NVIC_InitStructure);       
       
        USART_InitStructure.USART_BaudRate = USART2BaudRate;
        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_Rx | USART_Mode_Tx;
       
                USART_Init(USART2, &USART_InitStructure);
    USART_ITConfig(USART2, USART_IT_RXNE, ENABLE);
    USART_Cmd(USART2, ENABLE);
       
       
        NVIC_InitStructure.NVIC_IRQChannel = USART3_IRQn;
        NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority= 3;
        NVIC_InitStructure.NVIC_IRQChannelSubPriority = 2;       
        NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;               
        NVIC_Init(&NVIC_InitStructure);               
       
        USART_InitStructure.USART_BaudRate = USART3BaudRate;
        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_Rx | USART_Mode_Tx;

                USART_Init(USART3, &USART_InitStructure);
    USART_ITConfig(USART3, USART_IT_RXNE, ENABLE);
    USART_Cmd(USART3, ENABLE);

Dylan疾风闪电 发表于 2017-3-24 16:40:39

本帖最后由 Dylan疾风闪电 于 2017-3-27 16:21 编辑

1、中断优先级配置是否正确
      //Interrupts      --官方库函数的变种
      NVIC_GroupSet(NVIC_PriorityGroup_0, EXTI3_IRQn,                            1);
      NVIC_GroupSet(NVIC_PriorityGroup_0, PVD_IRQn,                           2);
      NVIC_GroupSet(NVIC_PriorityGroup_0, DMA1_Channel4_IRQn, 3);
      NVIC_GroupSet(NVIC_PriorityGroup_0, USART1_IRQn,                                 4);
      NVIC_GroupSet(NVIC_PriorityGroup_0, USART3_IRQn,                                 5);
      NVIC_GroupSet(NVIC_PriorityGroup_0, TIM6_IRQn,                6);
      NVIC_GroupSet(NVIC_PriorityGroup_0, DMA1_Channel1_IRQn, 7);
      NVIC_GroupSet(NVIC_PriorityGroup_0, DMA1_Channel2_IRQn, 8);
      NVIC_GroupSet(NVIC_PriorityGroup_0, DMA1_Channel3_IRQn, 9);
      NVIC_GroupSet(NVIC_PriorityGroup_0, DMA1_Channel5_IRQn, 10);
      NVIC_GroupSet(NVIC_PriorityGroup_0, DMA1_Channel7_IRQn, 11);

2、中断中的临界区、还有一些API函数的使用是否正确void USART1_IRQHandler(void)
{
OSIntEnter();

        uint32_t itValue = USART1->CR1;
        uint32_t srValue = USART1->SR;

        /* After IT_FLAG is set, if the queue is full, then accept-post one by one, otherwise save to queue.*/
        if (((srValue & USART_SR_RXNE) != RESET) && ((itValue & USART_CR1_RXNEIE) != RESET))
        {
                char rx_data = (char)USART1->DR;
                USART3->DR = rx_data;
               
                LED_Toggle();
               
                if (rx_data == ':')
                {
                        RingBuffer_FlushToEmpty(&rb_UsartRx);
                }

                RingBuffer_Puts(&rb_UsartRx, &rx_data, 1);
                       
                OSSemPost(sem_usart_rx);
        }
       
        /* After IT_FLAG is set, if the queue is empty, then clr the IT_FLAG, otherwise send the data.*/
        /*
        if ((( (srValue & USART_SR_TC)!= RESET) && ((itValue & USART_CR1_TCIE) != RESET))
       || (( (srValue & USART_SR_TXE) != RESET) && ((itValue & USART_CR1_TXEIE) != RESET)) )
        {
                char tx_data;
               
                if (RingBuffer_Gets(&rb_UsartTx, &tx_data, 1) != -1)
                {
                        USART1->DR = tx_data;
                }
                else
                {
                        OSSemPost(sem_usart_tx);
                        USART_ITConfig(USART1, USART_IT_TXE | USART_IT_TC, ENABLE);
                }
        }*/
        else
        {
                USART1->SR = ~(srValue & 0x00121B5F);
        }
       
OSIntExit();
}

void USART3_IRQHandler(void)
{
OSIntEnter();

      uint32_t itValue = USART3->CR1;
      uint32_t srValue = USART3->SR;

      /* After IT_FLAG is set, if the queue is full, then accept-post one by one, otherwise save to queue.*/
      if (((srValue & USART_SR_RXNE) != RESET) && ((itValue & USART_CR1_RXNEIE) != RESET))
      {
                char rx_data = (char)USART3->DR;
               
                USART1->DR = USART3->DR;
      }
      
      /* After IT_FLAG is set, if the queue is empty, then clr the IT_FLAG, otherwise send the data.*/
      if ((( (srValue & USART_SR_TC)!= RESET) && ((itValue & USART_CR1_TCIE) != RESET))
         || (( (srValue & USART_SR_TXE) != RESET) && ((itValue & USART_CR1_TXEIE) != RESET)) )
      {
                char tx_data;
                USART3->DR = tx_data;
                USART_ITConfig(USART3, USART_IT_TXE | USART_IT_TC, ENABLE);
      }
      else
      {
                USART3->SR = ~(srValue & 0x00121B5F);
      }
      
OSIntExit();
}

yklstudent-1794 发表于 2017-3-24 17:12:22

上工程

ahwen-288575 发表于 2017-3-25 23:49:19

启动文件里面有没有添加相对应的中断函数名

楠木灯芯 发表于 2018-8-22 10:03:08

请问楼主问题怎么解决的啊？
页: [1]
查看完整版本: stm32 ucosIII中使用USART1，USART2，USART3三个串口中断有问题