serial mis-communication between stamps

raulduke1011

I have two bs2sx stamps which I am using for my robot. The first checks several senses and the second serves as the brain and pulls the sensors stamp for results. This was working up to a few days ago. I have no idea what I changed or what may be failing hardware wise but I can't get it back to normal. The sensors controller should only return the values 1 - 4 but I am getting results going all the way up to 98. This is driving me crazy and so any information would be a major help. Attached are the files.

allanlane5

Looks good, as far as a quick look-over can reveal.

Things that cause this -- low batteries, bad ground wire, loose connection to a pin.

raulduke1011

Thanks, that confirms my suspicion that it was the power supply. I recently had to improvise my power supply connections using a soldering iron.

kenwtn

Maybe I am missing something, but I thought when you sent numbers using SEROUT and receiving using SERIN you need to terminate with character and use DEC formatter.

Example

SLAVE:
SERIN ComLine\FC, Baud, 200, TryAgain, [noparse][[/noparse]DEC2 Command, x]
MASTER
SEROUT ComLine\FC, Baud, 200, TryAgain, [noparse][[/noparse]DEC2 Command, " "]

Post Edited (kenwtn) : 6/5/2008 10:52:28 PM GMT