Node-RED, GPIO (C++, or Javascript)

[Martin_Fabik]

Does anyone have experience with GPIO use in PLC RADXDA zero hardware?

The standard GPIO nodes for Raspberry pi understandably do not work.

Could someone advise how to modify the node for simple use of IO pins (input, output, PWM output)?

[jurg1505]

To read / write GPIO with Node-red i use mraa

GPIO list
mraa-gpio list

GPIO set

root@radxa-zero:/home/rock# echo 490 >/sys/class/gpio/export
set in or out
root@radxa-zero:/home/rock# echo in >/sys/class/gpio/gpio490/direction