Tuesday, April 22, 2008

Pouch

Ok got the pouch finished today, which somehow took hours. Sewing is really hard. Also soldered the circuit and went to hook up everything but ran into a slight snag. Ok so theres two serial ports on the gumstix, one for the LCD and one for RFID reader. Reader only works on second one for some reason so i had to use the first for the LCD but it turns out when the gumstix boots up it outputs its startup messages on the first port, which looks like crazy code on the screen, so i tried getting them both to work off the second port but no luck. I decided then to just have two different batteries one for reader and gumstix, powering gumstix will just be for demos and stuff if i dont want it plugged in all the time, then second battery powers the screen. Turning on the screen seperatly avoids the crazy output when the gumstix boots. Ok thats fine for now however there seems to be something funny going on with the code now. RFID stuff works but not all messages are being sent to the screen. I cant see whats wrong at all. I'll give my brain a break from it and take another look tomorrow. Will make a short survey like thing before i go to bed about the cues evaluation and get some people to do it tomorrow.

1 comment:

Lorcan Coyle said...

Good news on the pouch (any sign of a photo?). Screen problem sounds a bit weird but your solution makes sense to me. Weird about the RFID reads. Is there enough delays between the reads to allow the screen to display what it's doing?