RS485 transmit enable

[Kenzi]

We're running a multi-drop single duplex RS485 bus, so it's important to stop driving the bus as soon as a transmit is complete so the next device can transmit without two drivers driving the bus at once.  Is there a way to set up hardware control of the RS485 bus driver enable pin?

[icanhazscreenid]

I'm sure there is a more elegant way of handling this situation but I typically configure the "driver" pins as inputs in this case. Set them up as inputs, change them to outputs before transmitting, then set them back to inputs when transmission is complete.

[awneil]

See also the duplicate thread:

https://devzone.nordicsemi.com/f/nordic-q-a/46911/rs485-transmit-enable