f407原子的例程，改成usart6，发送正常，接收进不了中断，求助！

thesky · 发表于 2021-3-25 16:00:55

本帖最后由 thesky 于 2021-3-25 16:10 编辑

确定使能了串口接收，以下是代码：
#if EN_USART6_RX //
u8  USART6_RX_BUF[USART6_REC_LEN]; //
u16 USART6_RX_STA;                      //

void uart6_init(u32 bound){

      GPIO_InitTypeDef GPIO_InitStructure;
      USART_InitTypeDef USART_InitStructure;
      NVIC_InitTypeDef NVIC_InitStructure;
      RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_GPIOC,ENABLE);
      RCC_APB2PeriphClockCmd(RCC_APB2Periph_USART6,ENABLE);//

      USART_DeInit(USART6);//

      GPIO_PinAFConfig(GPIOC,GPIO_PinSource6,GPIO_AF_USART6); //GPIOC6 USART6-TX
      GPIO_PinAFConfig(GPIOC,GPIO_PinSource7,GPIO_AF_USART6); //GPIOC7 USART6-RX

      //USART3
      GPIO_InitStructure.GPIO_Pin = GPIO_Pin_6 | GPIO_Pin_7; //GPIOC6  GPIOC7
      GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF;//
      GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;       //
      GPIO_InitStructure.GPIO_OType = GPIO_OType_PP; //
      GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_UP; //
      GPIO_Init(GPIOC,&GPIO_InitStructure); //

      USART_InitStructure.USART_BaudRate = bound;//
      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(USART6, &USART_InitStructure);

#if EN_USART6_RX
      //Usart6 NVIC ÅäÖÃ
      NVIC_InitStructure.NVIC_IRQChannel = USART3_IRQn;//
      NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority=3;//
      NVIC_InitStructure.NVIC_IRQChannelSubPriority =1;             //
      NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;                      //
      NVIC_Init(&NVIC_InitStructure);       //

      USART_ITConfig(USART6, USART_IT_RXNE, ENABLE);
#endif
      USART_Cmd(USART6, ENABLE);  //

      //USART_ClearFlag(USART6, USART_FLAG_TC);
}

void USART6_IRQHandler(void)                      //
{
      u8 Res;
      if (USART_GetITStatus(USART6, USART_IT_RXNE) != RESET)//
{
      Res = USART_ReceiveData(USART6);//(USART6->DR);       //
            //queue_push_436(Res);
            testBuff[testCount]=Res;
            testCount++;
            if(testCount>7){
                     testCount=2;
                     uart6_sendbytes(testBuff,7);
            }
}

}
#endif