CC3220SF-LAUNCHXL: UARTECHODMA EXAMPLE ERROR

Nour mohamed

Hello,

I want to use the uartechdma example from the CC3220 SDK, I have run the example and opened the Tera Term app. However, I get "Echoing characters:" on the terminal. I don't know what that means.

Do I need to change any hardware jumpers or anything?

How do I know if the example is working properly or not? Where am I supposed to see the result (Echoed character)?

Thank you,

over 6 years ago

0 Michael Reymond over 6 years ago

TI__Mastermind 40965 points

Hi Nour,

The example is working as expected. What this example demonstrates is how to use the CC3220 to perform a UART loopback, in effect taking each character you type in your terminal and sending it back for display. Without this loopback, there would be nothing displayed in your UART terminal when you type in characters.

To give you a better understanding of the demo, you can simply modify the main loop in mainThread() like so:

    /* Loop forever echoing */
    while (1) {
        UART_read(uart, &input, 1);
        UART_write(uart, &input, 1);
        UART_write(uart, &input, 1);
    }

Now, when you type in a character, you get two copies of it on your terminal.

Regards,
Michael

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CC3220SF-LAUNCHXL: UARTECHODMA EXAMPLE ERROR