这里的UART中断要怎么使用呢？

只看该作者 · 2015-8-17 17:40

本人初学CYBLE，求大神指导
这里的UART中断要怎么使用呢？
是指外面的MCU串口发给蓝牙芯片的UART中断吗？还是蓝牙天线接收数据后的中断？
函数在BLE_HAL_INT.C源文件里面
/*******************************************************************************
* Function Name: CyBLE_Uart_Interrupt
********************************************************************************
*
* Summary:
*  Handles the Interrupt Service Routine for the UART.
*
* Parameters:
*  None
*
* Return:
*  None
*
*******************************************************************************/
CY_ISR(CyBLE_Uart_Interrupt)
{
uint8  uartTxStatus = CyBLE_INTR_TX_SUCCESS;
uint32 srcInterrupt = 0u;

uint8 length = 0u;
uint8 srcCount = 0u;
uint8 uartRxStatus = CyBLE_INTR_RX_SUCCESS;
uint8 receivedData[BLE_HAL_Uart_FIFO_SIZE] = {0u};

/* Evaluate RX interrupt event */
srcInterrupt = BLE_HAL_Uart_GetRxInterruptSourceMasked();

if(0u != (srcInterrupt & BLE_HAL_Uart_INTR_RX_NOT_EMPTY))
{
      if(0u != (srcInterrupt & BLE_HAL_Uart_INTR_RX_PARITY_ERROR))
      {
         uartRxStatus |= CyBLE_INTR_RX_PARITY_ERROR;
      }
      if(0u != (srcInterrupt & BLE_HAL_Uart_INTR_RX_FRAME_ERROR))
      {
         uartRxStatus |= CyBLE_INTR_RX_FRAME_ERROR;
      }
      if(0u != (srcInterrupt & BLE_HAL_Uart_INTR_RX_OVERFLOW))
      {
         uartRxStatus |= CyBLE_INTR_RX_OVERFLOW;
      }
      if(uartRxStatus == CyBLE_INTR_RX_SUCCESS)
      {
         length = (uint8)BLE_HAL_Uart_SpiUartGetRxBufferSize();
         for(srcCount = 0u; srcCount < length; srcCount++)
         {
            receivedData[srcCount] = (uint8)BLE_HAL_Uart_SpiUartReadRxData();
         }
      }
      else
      {
         BLE_HAL_Uart_SpiUartClearRxBuffer();
      }
      for(uartTxStatus = 0u; uartTxStatus < length; uartTxStatus++)
      {
         CyBLE_pf_handle_uart_rx_data(receivedData[uartTxStatus]);
      }
      BLE_HAL_Uart_ClearRxInterruptSource(srcInterrupt);
}
else
{
      /* No RX interrupt. Do nothing. */
}

/* Evaluate TX interrupt event in sequence */
srcInterrupt = BLE_HAL_Uart_GetTxInterruptSourceMasked();

/* Stack manager TX uart complete */
if(0u != (srcInterrupt & BLE_HAL_Uart_INTR_TX_UART_DONE))
{
      if(0u != (srcInterrupt & BLE_HAL_Uart_INTR_TX_OVERFLOW))
      {
         /*Stack manager TX uart error */
         uartTxStatus |= CyBLE_INTR_TX_OVERFLOW;
      }
      CyBLE_pf_handle_uart_tx_complt();
      BLE_HAL_Uart_ClearTxInterruptSource(srcInterrupt);
}
else
{
      /* No TX interrupt. Do nothing. */
}
}