RTOS/TM4C1294NCPDT: Task Issues

My task0 code:

void UARTPort_Params_Setting(void)
{
    /* Create a UART with data processing off. */
    UART_Params_init(&uartParams);
    uartParams.writeDataMode = UART_DATA_BINARY;
    uartParams.readDataMode = UART_DATA_BINARY;
    uartParams.readTimeout = 10;
    uartParams.readReturnMode = UART_RETURN_FULL;
    uartParams.readEcho = UART_ECHO_OFF;
    uartParams.baudRate = 9600;
    uart = UART_open(Board_UART0, &uartParams);
}

void UART_echoFxn(UArg arg0, UArg arg1)
{
    char arg; // the command argument
    unsigned int count; // the count of UART RX reading data
    unsigned char input[256] = {0};
    const char echoPrompt[] = "\fConnecting MCU is success.\r\n";

    /* Create a UART with data processing off. */
    UARTPort_Params_Setting();

    UART_write(uart, echoPrompt, sizeof(echoPrompt));

    /* Loop forever echoing */
    while (1)
    {
        UART_control(uart, UART_CMD_ISAVAILABLE, &arg); // read RX buffer, true if data is available, else false
	if(arg != 0)
	{
            count = UART_read(uart, input, 256);
	    UART_Command(uart, input, count);
	}
    }
}

My task1 code:

void System_taskFxn(UArg arg0, UArg arg1)
{
    while(1)
    {
	Mapping_Update();
    }
}

When the priorities are the same, the UART can use and i can also set some value by I2C etc.

Hello,

I take your advise, and i add Task_sleep(1) in the UART_echoFxn function with the different priority. The system looks fine, it's work.

How i use semaphores, l can not understand how it works. Do the TI has some examples?

thanks

BR,

Louis 

Dear Ralph,

Thanks.

BR,

Louis