PIC communication 1 master to 3 slave by RS232

akekachai · Joined: 03 Feb 2013 Posts: 1

Hi, everybody

I will create a new project using PIC and CCS compiler.
This project is consist of 1 master and 3 slave that will communicate through RS232.

As I know, The general concept is that the master will send address to the slave. If the address is match which one, the slave will send data to master.

Please help me.
How to use command to contact the slave and then send data to master ?

How to do format and protocol ?

Thank you

Mike Walne · Joined: 19 Feb 2004 Posts: 1785 Location: Boston Spa UK

Do you mean RS485?

Mike

temtronic · Posted: Sun Feb 03, 2013 12:30 pm

Technically it is possible to use RS-232 for multiPIC communications though RS-485 is the generaly accepted 'standard'

Also, providing they are reasonably close(1-2 feet,maybe a metre), CCS supplies examples of PIC2PIC on a single wire (NOT One wire !).

Any of these 3 methods works fine...it's up to the designer/programmer
to choose based on his criteria(speed,distance,traffic collisions,etc.).

hth
jay