tty: uart: loopback test

[hariprasad kelam]

Hi Subhashini,




On Tue, 26 Mar 2019 at 17:23, Subhashini Rao Beerisetty <
subhashbeerisetty at gmail.com> wrote:

>   Hi All,
>
>
> I’m looking for an userspace ‘C’ test code to transfer a file on UART
> Tx line and receive the file on UART Rx line to test loopback
> supported serial port.
>

Before sending file on UART . I would suggest you to test sending simple
buffer and ensure you receive it correctly.


>
> Can anybody give example of such application?
>
I am assuming  you have correct hardware ,ensure RS-232 RX-TX lines are
short.If you are not sure follow below link
[image: image.png]

Coming to application which tests loop back,there are plenty tools like
1.minicom
2.cutecom etc.

if you want to specific application try below
https://elinux.org/images/b/b7/Uart-loopback.c
https://medium.com/@amitasinghchauhan/serial-port-debugging-101-loopback-test-4a7e40da9055


>
>
> Thanks
>
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