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What's the easiest way to communicate through one wire (and ground)?
I need to send two bytes between boards.
I only have one wire to do it. Is it possible to put a transistor between the RX and TX to cut RX off when TX is sending?
Nothing! you can just read the Rx buffer as a dummy and lob it. ( no different to the loopback test ) If you do it with software it wont matter either.
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