移植freemodbus到RTT出assert_failed问题[已解决]

void USART_ClearITPendingBit(USART_TypeDef* USARTx, uint16_t USART_IT)
{
  uint16_t bitpos = 0x00, itmask = 0x00;
  /* Check the parameters */
  assert_param(IS_USART_ALL_PERIPH(USARTx));
  assert_param(IS_USART_CLEAR_IT(USART_IT));
  /* The CTS interrupt is not available for UART4 and UART5 */
  if (USART_IT == USART_IT_CTS)
  {
    assert_param(IS_USART_123_PERIPH(USARTx));
  }   
  
  bitpos = USART_IT >> 0x08;
  itmask = ((uint16_t)0x01 << (uint16_t)bitpos);
  USARTx->SR = (uint16_t)~itmask;
}

void USART1_IRQHandler(void)
{
  /* enter interrupt */
  rt_interrupt_enter();
  
  if(USART_GetITStatus(USART1, USART_IT_RXNE) == SET)
  {
    prvvUARTRxISR();
    
    USART_ClearITPendingBit(USART1, USART_IT_RXNE);
  }
  
  if(USART_GetITStatus(USART1, USART_IT_TXE) == SET)
  {
    prvvUARTTxReadyISR();
    USART_ClearITPendingBit(USART1, USART_IT_TXE);
  }
  
  /* leave interrupt */
  rt_interrupt_leave();
}

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