re: PIC Network and Collision Detect

   Antonio, I don't know what your design requirements are but I would
take a hard look at a Master/Slave protocol. Implementing
collision-detection in software can be very difficult as well as consume
a lot of CPU time.

   - Tom

> From: Antonio Almeida <deec352@TOM.FE.UP.PT>
> To: PICLIST@MITVMA.MIT.EDU
> Subject: collision detection
> Date: Tuesday, 8 April 1997 23:25
>
> Hello,
>         I am building a PIC network and i pretend to use RS485 chips. I
> will use the built in UART to drive them but i need a way to detect
> collisions and network idle state, what i think i should do it's when i
> send a byte from the UART, or pretend to send it, i monitor the line with
> another pin (neither TX or RX) looking for diferent bits. Something link
> this: