I only have a small amount of experience with RS232 (hence the request for help). I have added color coding to how I think the requests break down:
Initialization string (FE 2 0).
a command (F0 0 61 0 0).
a VALUE for volume
a checksum.
a termination (F7).
a command (F0 0 61 0 4).
a VALUE for volume.
a checksum.
a termination (F7).
I can't figure out the relationship between the VALUE and actual volume. I also can't figure out how to compute the checksum. In the program volume goes between +12 and -100, so for me to figure it out I think I will need more values. I COULD BE COMPLETE WRONG ABOUT EVERYTHING....
Last edited by shaun5 on March 16, 2010 12:11.