stm32f051为什么发送完成中断一直执行，而接收寄存器非空中断不能执行

只看该作者 · 2016-8-29 09:48

void USART1_IRQHandler(void)
{

if (USART_GetITStatus(USART1, USART_IT_RXNE) != RESET)
{
      USART_ClearITPendingBit(USART1, USART_IT_RXNE);
      pxMBFrameCBByteReceived(  );
      LAMP_ON;
}
/* Send the received data to the PC Host*/
if(USART_GetITStatus(USART1, USART_IT_TXE) != RESET)
{
      USART_ClearITPendingBit(USART1, USART_IT_TXE);
      pxMBFrameCBTransmitterEmpty();
// LAMP_ON;
}
#ifdef RTS_ENABLE
if(USART_GetITStatus(USART1, USART_IT_TC) != RESET)
{
      USART_ClearITPendingBit(USART1, USART_IT_TC);
USART_ClearFlag(USART1, USART_FLAG_TC);
      RTS_READ;
   //  LAMP_ON;
}
#endif
}