Which PINs on the Rock5B PCB should go to the TTL cable?
That is, the Rock5B’s firmware will initialize one particular TTL/UART interface right, please explain which PIN:s go there.
TTL cable has four connectors: One green, one white, one black and one red.
I see UART mentioned at the GPIO documentation https://wiki.radxa.com/Rock5/hardware/5b/gpio , though UART1 only has two matches there.
Ah right found the answer on the Wiki:
https://wiki.radxa.com/Rock5/dev/serial-console - the photo shows green white and black are connected to upper left PINs and red is not.
Specifically per the numbering at https://wiki.radxa.com/Rock5/hardware/5b/gpio , it’s GPIO PINs 6 (to the black), 8 (to the white) and 10 (to the green).