Quote: Originally Posted by pippolippi
I'd suggest to consider an extra line to connect the remote output of the hu to cts, so that the pc can check that the hu is on or off and start communication accordingly. (a pull down resistor should be enough if you don't want to get fancy).
Can we have a reliable communication without the CTS input and use it for another purpose ?
We could also send this remote to the ACC of the PC power supply (M1 ATX in my case) so that PC hibernates when HU stops and resumes when HU starts :-)
Note : if RTS/CTS aren't mandatory for handshaking, can I use the RTS output for another purpose too ?