Recent content by kebo

thanks berkeman. The master slave may be the easiest, but in this case it's not the right solution. I think I'll do some testing and see what I can do. kevin

Are you saying that when the event occurs, the device sends it immediately or are you saying the devices respond to the master's time synch? If the device sends it immediately how do you avoid bus collisions with the potential for 2 devices to have events at the same time (albeit probably...

I had considered putting a RTC in each device, but had not considered the master timestamp approach. Either way I would like to get away from the whole master/slave approach anyway. No matter how I implement it, I am polling a device once every 30 seconds or so looking for an event that occurs...

I am running something like modbus, but without the registers and complexity. In the master (pc) loop through each device and build that comm packet as follows Preamble byte Address byte Function byte required data byte array terminator The master sends the packet and waits for the device at...

Hi all, I am working on a project that currently uses an RS-485 network with up to 32 slave devices (pic18f's with various IO and a max 483 driver) connected back to a master PC. The system is running fine, but it could be better. The only time the master needs data from a device is when a...