1.1.9.4.5 DRV_USART_ErrorGet Function

DRV_USART_ERROR DRV_USART_ErrorGet( const DRV_USART_BUFFER_HANDLE bufferHandle )

Gets the USART hardware errors associated with the transfer request.

This function returns the errors associated with the given bufferHandle. The call to this function also clears all the associated error flags. This function can be used for non-DMA buffer transfers only. It cannot be used when the USART driver is configured to use DMA.

DRV_USART_Open must have been called to obtain a valid opened device handle.

Errors occurred as listed by DRV_USART_ERROR. This function reports multiple USART errors if occurred.

// 'bufferHandle', returned from the DRV_USART_ReadBufferAdd

if (DRV_USART_ErrorGet(bufferHandle) & DRV_USART_ERROR_OVERRUN)
{
    //Errors are cleared by the driver, take respective action
    //for the overrun error case.
}

USART errors are normally associated with the receiver. Once the DRV_USART_ErrorGet API is called by the application, the errors are cleared (set to DRV_USART_ERROR_NONE) by the driver.

The errors remain valid only until the buffer object associated with the bufferHandle is not assigned to another transfer request; in which case the API returns the error status as DRV_USART_ERROR_NONE.

Hence, application may want to call this routine from the callback routine itself, in case where an error is reported by the driver in the callback. This function is expected to work in non-DMA mode only.