UART_read return UART_ERROR when another task perform uSD operations

Hi Mauro,

I'll need more information to help you solve this:

What mode(blocking or callback) did you configure the UART driver to use?

Also it'll help me if I could see what you're doing in your code: i.e how you configure the UART, logging and so on.

Thanks,

Moses

Void comunicationFxn(UArg arg0, UArg arg1)
{
CommRestart:{}

    UART_Handle uart;
    UART_Params uartParams;

    //create UART
    UART_Params_init(&uartParams);
    uartParams.writeDataMode  = UART_DATA_BINARY;
    uartParams.readDataMode   = UART_DATA_BINARY;
    uartParams.readReturnMode = UART_RETURN_FULL;
    uartParams.readEcho       = UART_ECHO_OFF;
    uartParams.readTimeout    = 10;//ms ?
    uartParams.baudRate       = 57600;
    uart = UART_open(0, &uartParams);

    while(TRUE)
    {
    	//receive
    	Int pck_len=UART_read(uart, (Char*)req_buf, sizeof(req_buf));

    	//if error RESTART
    	if(pck_len==UART_ERROR)
    	{
    		diagnosticPrintfBuffer("RX ERROR", NULL);
    		UART_close(uart);
    		goto CommRestart;//non esiste qualcosa del tipo "Task_rewind" o "Task_restart" ?
    	}

    	//create buffers
    	BUFFER request = {req_buf,sizeof(req_buf),pck_len,0};
	    BUFFER answer = {answ_buf,sizeof(answ_buf),0,0};

	    //diagnostic
	    diagnosticPrintfBuffer("RX", IN &request);

    	//decode
    	modbus_decode(0x13, IN &request, OUT &answer);

    	//diagnostic
    	diagnosticPrintfBuffer("RX", IN &answer);

    	//answer
		Int w_len=UART_write(uart, (Char*)answer.buffer, answer.w_ptr);

    	//if error RESTART
    	if(w_len==UART_ERROR)
    	{
    		diagnosticPrintfBuffer("TX ERROR", NULL);
    		UART_close(uart);
    		goto CommRestart;//non esiste qualcosa del tipo "Task_rewind" o "Task_restart" ?
    	}
    }
}

Sorry for the delay. 

Are you still having issues with this?

Moses

Hi Moses. I have same problem with UART (UART_read return UART_ERROR, SPI work in another Task). Can you help me?