How use serial port0 on Omega 2 plus

[Abdullah Seba]

Hi
I'm trying to use my ttys0 serial port but its not working. All I get when trying to send is random characters and it wont revive anything using the cat command.
I followed this guide https://www.hackster.io/sidwarkd/free-up-the-serial-port-on-the-onion-omega-7b3849 to free it from the boot messages but the same happens.
The second port works fine.
Any idea how I can fix this?
Thanks in advance.

[Jeff Seese]

Before you turned off the Kernel Echo did you get boot messages on ttyS0?

What happens if you do this from your Omega

echo "test" >> /dev/ttyS0

Do you have any kind of logic analyzer or like this https://www.saleae.com/ that you can put on the Omega RX/TX lines?