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sc16is752 i2c as rs485 uart

Posted: Fri May 10, 2019 9:52 pm
by ErikHouet

currently I am using the sc16is752 to add a few extra UART's. This is working great. So, I have an extra ttySC0 and ttySC1.
At the moment they work as rs232. I really want to change to rs485 to allow communication by Modbus RTU.

I know the theory that the RTS-flag must be set to switch between transmitting and receiving, but I don't know how to activate it in the overlay (or somewhere else).

Can someone help me activating the rs485 RTS feature?

Thanks in advance.