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Original question:

TMDSCNCD263: Getting Overrun error for rx when Cdd Uart is configured in polling method

TMDSCNCD263: CDD_UART : Uart DMA related function are compiled even DMA Mode is disabled

Palanikumar Raveendran
Prodigy 75 points
Part Number: TMDSCNCD263

Hii,

Currently I'm using MCAL_AM263x_08.06.02 version package in my project. 

I configured Uart1 in polling mode ,  DMA mode is disabled in EB.  So, I haven't included Uart DMA files in make file. 

I'm getting error that Uart_Cdd_dmaDisableChannel is undefined.   

Even If DMA is disabled , DMA related uart functions takes place in compiling.   

what could be the root cause for this issue ?

 

Thanks.

  • 0
    TI__Genius 15435 points

    Hi Palani,

    Thanks for reporting this. I'm evaluating this on my side and will come back by EOD. 

    Thanks 

  • 0 in reply to Kowshik Gudimetla
    TI__Genius 15435 points

    Hi Palani,

    This seems to be a bug that was fixed recently. Please replace the `Cdd_Uart_Cancel` API in the Cdd_uart.c with the below code. This should fix the issue you're seeing.

    FUNC(boolean, CDD_UART_CODE) Cdd_Uart_Cancel(uint8 ChannelID, CddUartDataDirectionType TransferType)
{
    boolean cancelStatus = FALSE;
    #if (STD_ON == CDD_UART_DEV_ERROR_DETECT)
    if (CDD_UART_UNINIT == CddUart_DriverStatus)
    {
        CddUart_ReportDetError(CDD_UART_CANCEL_SERVICE_ID, CDD_UART_E_UNINIT);
    }
    else if (ChannelID >= CDD_UART_NUM_CHANNELS)
    {
        CddUart_ReportDetError(CDD_UART_CANCEL_SERVICE_ID, CDD_UART_E_INVALID_CHANNEL);
    }
    else if (TransferType==UART_READ_TRANSFER_TYPE && CddUart_ChannelObjects[ChannelID].readTrans == NULL_PTR)
    {
        CddUart_ReportDetError(CDD_UART_CANCEL_SERVICE_ID, CDD_UART_E_PARAM_POINTER);
    }
    else if (TransferType==UART_WRITE_TRANSFER_TYPE && CddUart_ChannelObjects[ChannelID].writeTrans == NULL_PTR)
    {
        CddUart_ReportDetError(CDD_UART_CANCEL_SERVICE_ID, CDD_UART_E_PARAM_POINTER);
    }
    else if (CddUart_ChannelObjects[ChannelID].hUartInit->transferMode!=CDD_UART_MODE_DMA && CddUart_ChannelObjects[ChannelID].hUartInit->transferMode!=CDD_UART_MODE_INTERRUPT)
    {
        CddUart_ReportDetError(CDD_UART_CANCEL_SERVICE_ID, CDD_UART_E_PARAM_VALUE);
    }
    else
    #endif
    {
        if (TransferType==UART_WRITE_TRANSFER_TYPE) 
        {
            if (CddUart_ChannelObjects[ChannelID].hUartInit->transferMode == CDD_UART_MODE_DMA)
            {
                #if (CDD_UART_DMA_ENABLE == STD_ON)
                if (Uart_Cdd_writeCancelDma(&CddUart_ChannelObjects[ChannelID], CddUart_ChannelObjects[ChannelID].writeTrans) == MCAL_SystemP_SUCCESS)
                {
                    cancelStatus = TRUE;
                }
                else
                {
                    cancelStatus = FALSE;
                }
                #endif
            }
            else
            {
                if (Uart_Cdd_writeCancel(&CddUart_ChannelObjects[ChannelID], CddUart_ChannelObjects[ChannelID].writeTrans) == MCAL_SystemP_SUCCESS)
                {
                    cancelStatus = TRUE;
                }
                else
                {
                    cancelStatus = FALSE;
                }
            }
        }
        else
        {
            if (CddUart_ChannelObjects[ChannelID].hUartInit->transferMode == CDD_UART_MODE_DMA)
            {
                #if (CDD_UART_DMA_ENABLE == STD_ON)
                if (Uart_Cdd_readCancelDma(&CddUart_ChannelObjects[ChannelID], CddUart_ChannelObjects[ChannelID].readTrans) == MCAL_SystemP_SUCCESS)
                {
                    cancelStatus = TRUE;
                }
                else
                {
                    cancelStatus = FALSE;
                }
                #endif
            }
            else
            {
                if (Uart_Cdd_readCancel(&CddUart_ChannelObjects[ChannelID], CddUart_ChannelObjects[ChannelID].readTrans) == MCAL_SystemP_SUCCESS)
                {
                    cancelStatus = TRUE;
                }
                else
                {
                    cancelStatus = FALSE;
                }
            }
        }
    }
    return cancelStatus;
}
#endif /* (STD_ON == CDD_UART_CANCEL_API) */

    Thanks,

    G Kowshik

  • 0 in reply to Kowshik Gudimetla
    Prodigy 75 points

    Hii Kowshik,

    I verified the code which shared for Cdd_uart_Cancel API .  I just replaced with it .  It's working fine .  

    Thanks for the response.

    Shall we expect that these changes will be adopted in next release of MCAL package ?

  • +1 in reply to Palanikumar Raveendran
    TI__Genius 15435 points

    yes Sure. This should be available in next release, closing the thread.

    Thanks