HAL_StatusTypeDef HAL_UART_UnRegisterCallback()

in CMake-armcc/Drivers/STM32L4xx_HAL_Driver/Src/stm32l4xx_hal_uart.c [867:969]

• 79 lines of code
• 18 McCabe index (conditional complexity)

HAL_StatusTypeDef HAL_UART_UnRegisterCallback(UART_HandleTypeDef *huart, HAL_UART_CallbackIDTypeDef CallbackID)
{
  HAL_StatusTypeDef status = HAL_OK;

  __HAL_LOCK(huart);

  if (HAL_UART_STATE_READY == huart->gState)
  {
    switch (CallbackID)
    {
      case HAL_UART_TX_HALFCOMPLETE_CB_ID :
        huart->TxHalfCpltCallback = HAL_UART_TxHalfCpltCallback;               /* Legacy weak  TxHalfCpltCallback    */
        break;

      case HAL_UART_TX_COMPLETE_CB_ID :
        huart->TxCpltCallback = HAL_UART_TxCpltCallback;                       /* Legacy weak TxCpltCallback         */
        break;

      case HAL_UART_RX_HALFCOMPLETE_CB_ID :
        huart->RxHalfCpltCallback = HAL_UART_RxHalfCpltCallback;               /* Legacy weak RxHalfCpltCallback     */
        break;

      case HAL_UART_RX_COMPLETE_CB_ID :
        huart->RxCpltCallback = HAL_UART_RxCpltCallback;                       /* Legacy weak RxCpltCallback         */
        break;

      case HAL_UART_ERROR_CB_ID :
        huart->ErrorCallback = HAL_UART_ErrorCallback;                         /* Legacy weak ErrorCallback          */
        break;

      case HAL_UART_ABORT_COMPLETE_CB_ID :
        huart->AbortCpltCallback = HAL_UART_AbortCpltCallback;                 /* Legacy weak AbortCpltCallback      */
        break;

      case HAL_UART_ABORT_TRANSMIT_COMPLETE_CB_ID :
        huart->AbortTransmitCpltCallback = HAL_UART_AbortTransmitCpltCallback; /* Legacy weak
                                                                                  AbortTransmitCpltCallback          */
        break;

      case HAL_UART_ABORT_RECEIVE_COMPLETE_CB_ID :
        huart->AbortReceiveCpltCallback = HAL_UART_AbortReceiveCpltCallback;   /* Legacy weak
                                                                                  AbortReceiveCpltCallback           */
        break;

      case HAL_UART_WAKEUP_CB_ID :
        huart->WakeupCallback = HAL_UARTEx_WakeupCallback;                     /* Legacy weak WakeupCallback         */
        break;

#if defined(USART_CR1_FIFOEN)
      case HAL_UART_RX_FIFO_FULL_CB_ID :
        huart->RxFifoFullCallback = HAL_UARTEx_RxFifoFullCallback;             /* Legacy weak RxFifoFullCallback     */
        break;

      case HAL_UART_TX_FIFO_EMPTY_CB_ID :
        huart->TxFifoEmptyCallback = HAL_UARTEx_TxFifoEmptyCallback;           /* Legacy weak TxFifoEmptyCallback    */
        break;

#endif /* USART_CR1_FIFOEN */
      case HAL_UART_MSPINIT_CB_ID :
        huart->MspInitCallback = HAL_UART_MspInit;                             /* Legacy weak MspInitCallback        */
        break;

      case HAL_UART_MSPDEINIT_CB_ID :
        huart->MspDeInitCallback = HAL_UART_MspDeInit;                         /* Legacy weak MspDeInitCallback      */
        break;

      default :
        huart->ErrorCode |= HAL_UART_ERROR_INVALID_CALLBACK;

        status =  HAL_ERROR;
        break;
    }
  }
  else if (HAL_UART_STATE_RESET == huart->gState)
  {
    switch (CallbackID)
    {
      case HAL_UART_MSPINIT_CB_ID :
        huart->MspInitCallback = HAL_UART_MspInit;
        break;

      case HAL_UART_MSPDEINIT_CB_ID :
        huart->MspDeInitCallback = HAL_UART_MspDeInit;
        break;

      default :
        huart->ErrorCode |= HAL_UART_ERROR_INVALID_CALLBACK;

        status =  HAL_ERROR;
        break;
    }
  }
  else
  {
    huart->ErrorCode |= HAL_UART_ERROR_INVALID_CALLBACK;

    status =  HAL_ERROR;
  }

  __HAL_UNLOCK(huart);

  return status;
}