Newb Question...

For starters: MPLab 8.10, ICD2, PIC12F629, PBP 2.50a
Initializations

Include "modedefs.bas"

trisio =%110000

red var gpio.0 'red
blue var gpio.1 'blue
buzzer var gpio.2 'buzzer
Contact var gpio.4 'Input1
Contact1 var gpio.5 'Input2
i var byte 'general counter
k var byte 'general counter


My initializations stay the same for all below.



main:
red=0
blue=1
pause 500

blue=0
red=1
pause 500

goto main


This code alternates a red and blue LED as expected. Good.







main:
red=0
blue=1
pause 500

red=1
blue=0
pause 500

goto main

This code... blue light comes on... blue light goes off(red doesnt come on). Not good. Shouldnt they alternate???



main:
blue=1
red=0
pause 500

red=1
blue=0
pause 500

goto main

This code... nothing happens. ??? Shouldnt they alternate


main:
blue=1
red=1
pause 500

goto main

This program results in only red. I think it should result in both?





The above programs and results were done in my 12f629. This is my first time with such a weak PIC, but its job is super simple and its the cheapest and smallest PIC we stock here. I put the same code into my 18F2520 and 4520s and they act as I would expect they act. Could someone explain to me why it appears to be only taking the last variable I use, be it red or blue and using that one. Am I expecting something wrong? If so why are my expectations correct for the 2520 series?






So I've been programming with PBP for quite a while now, about 6 months. I think i've done some pretty complex and advanced programs in PBP and now I feel kind of bad with this ultra-noob question.

PBP was my first experience with MCUs(I had programmed my fair share of things, but all in C, or basic on a PC), consequently I was not... enamoured so to speak with PBP. This semester I took a class on MCU's and programmed the entire class in assembly, and did my class final project in C.(We used freescale... eww.) Consequently... I'm back to PBP and PICs and I have a much higher impression of how truly useful and easy it is but this just baffles me. Its so simple... am I missing something obvious?

What happens if you were to put a Pause 1 between the Red and Blue?

main:
red=0
pause 1
blue=1
pause 500

red=1
pause 1
blue=0
pause 500

goto main

I copy and pasted your suggestion and it flashed Blue On, Blue off(red off), Blue On, Blue Off(red off)... and so forth.

OK Melanie... always look at the Datasheet... turn the Comparator OFF... Put this in before your loop...

CMCON=7

Well that was it... Now I'm off to find where I missed it in the datasheet... RTFM failure.:mad:

Ninja:

Unprecedented failure... the giant gray box that says NOTE:

Sometimes I feel like a numbnuts.

Thanks Melanie!