Hello all,

I have a problem connecting two PICs (16F877A) on two boards. I use a
communication protocol and until yesterday it worked fine. I connected a
MAX232 circuit to one board and after that, the boards won't connect
without this circuit plugged.
One board is the master and the other is the slave. The slave has to
request for a permission to transmit, but the signal never gets to the
master. I think that the problem is with the TX line which cannot be
pulled LOW by the slave. Each slave has a diode connected on the TX line
to allow more slaves on the line.
I have the feeling that I might have missed some details, but I hope
someone will understand my problem and answer it. Should I give more
detail, please ask !
Thank you very much !

Lucian Copat

--
http://www.piclist.com hint: To leave the PICList
mailto:piclist-unsubscribe-request@mitvma.mit.edu