RS232 - GPIO - activate

#1

Hi,

the ROCK Pi 5 have “many” RS232 connection Options on the GPIO … i need some of them
What is the right way to change the GPIO from INPUT / OUTPUT to RS232 ?

Thanks a lot,
René

#2

First, you need to check which pins you want to use for RS232(uart), check the pinout here:

https://wiki.radxa.com/Rock5/hardware/5b/gpio

Let’s say you want to use UART3-M1 as Then you can use rsetup to enable “Enable UART3-M1”.

#3

wich rsetup ?

just use armbian and enable it through there , armbian-config and enable it

it is just enabling a extra dtsi file nothing fancy with setup crap etc

#4

I had visited the armbian-config tool … but i don’t understand what’s todo to activate the RS232 on the GPIO