In SX Microcontrollers, SX/B Compiler and SX-Key Tool, JonnyMac wrote:

John,

I've attached a copy of our (EFX-TEK) firmware for the RC-4 relay board.  It uses the Parallax AppMod protocol and communicates over single-wire serial.  If you look at the code you can see that it can send and receive requests.

If you SX must be doing something else while serial is coming in or going out then you'll have to use an interrupt and buffer the serial data.  If you need, I can show you how we do that, too.

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