M5Station-485 I do not manage to use RS485

[Jejmule]

Does anyone manage to have a working modbus communication with the M5station-485
I use to work with the industrialshield modbus library : https://github.com/Industrial-Shields/arduino-Modbus
I do manage to use it with the atomhub-switch using serial2 with RX and TX on 33 and 23.

For this board the RE/DE pin should be controlled but I do not know where to configure it!

Any help is welcome :)

[felmue]

Hello @Jejmule

maybe this example I wrote a while ago could be helpful?

Thanks
Felix