Smart communication between two pic.

[davidbue]

Hello everybody.

I'm pretty solid at PIC basics and have alot of routine in programming a single unit.

In my upcomming project I need to do something that I haven't tried before and I'd therefore like to ask you guys what's the smart way to do it.

I have a scenario that looks like this:

I have a serial connection from my computer to a pic18f4525. I need receive an 8bit integer from the serial connection and pass that integer on to another pic18f4525.

If I'm a bit unclear, the scenario is like this:

[PC] --8bit int, serial connection--> [PIC1] --8bit int--> [PIC2]

I'd like the hardware setup to use as few wires as possible from PIC1 to PIC2. I'd prefer a solution that allows bidirectional communication.

So. What's the smart way to do this?

Thank you for your help
David

[arunb]

Try RS 485 based interface.. you can address both PICs individually from the PC..

thanks
aa