Serial port...Low Voltage Idle...Possible?

Projects General Guidance
1

Hey Team, :stuck_out_tongue:

I have a device (v1 radar) that is using timeslice serial on a single wire.

E.g. Each device waits for its time to Tx ...all other times it should listen.

I was going to use serial port with a few transistors to do this, except that the serial ports idle state is 5V when not transmitting (this is the case for Rx and Tx pins)

The V1 device needs to see 0V on the wire during idle state (no devices Tx'ing), as > than 1.2V puts the device into legacy mode.

I'm really not sure how to proceed?

Is it possible to make the idle state low or do I need to write my own protocol via pulse in etc??

Thanks in advance. :confused:

2

Maybe you should just write your own program and not use the USART. The code in yet another software serial may be a suitable starting point.

...R

3

Thanks, I should be able to work on it using that code as a springboard.

Cheers