[SOLVED] Library for half-duplex serial? (RX and TX from one pin)

Projects Networking, Protocols, and Devices
1

I am trying to interface with some hardware that requires me to use half-duplex serial. What is the best way for me to implement this?

I am using a Teensy 2.0, if this precludes me from using certain libraries.

EDIT:

I found a good library for this.

It's called SoftwareSerialWithHalfDuplex. Seems to work pretty well.

Alternatively, I'm thinking maybe I could have just tied together the UART RX and TX and set the TX pin to input mode most of the time, but I don't know if I can do that.

2

Can you explain in more detail? You want to send only? Receive only? Hardware or software serial?

3

Both. I want bi-directional half-duplex. I need to be able to read serial data, set the pin to output mode, send serial data, and put the pin back into input mode.

I would prefer a hardware solution, but software serial should be OK as well.

4

I found a good library for this.

It's called SoftwareSerialWithHalfDuplex. Seems to work pretty well.

Alternatively, I'm thinking maybe I could have just tied together the UART RX and TX and set the TX pin to input mode most of the time, but I don't know if I can do that.

Hey there,
I wrote that library...well, mostly just adapted the SoftwareSerial library. Anyways, all it does is what you suggest in your alternative.
Cheers