01-24-2010, 10:45 PM
Hi, I am building a small board that will serve as a middle man between a alarm controller and a PC. When the alarm is activated it will send serial data to the middle board which will perform tasks and then pass the serial message on to the PC. The communication must be bi-directional. If the PC sends a serial message to the middle board, it receives it performs some task and then passes the serial message on to the alarm board. Luckily there will never be a time when both the alarm controller or PC need to communicate simultaneously. So, the middle board stamp must be wired to ser comm with the alarm and also to ser comm with the PC. Has anyone ever tried this? I was planning on setting p0 for ser comm with the alarm and p1 with the pc. Any questions comments appreciated.