pin 12f683

[Bruce]

Which PIC are you actually using? Your code example above indicates a 12F675, but you asked about the 12F683?

For the 12F675 you need CMCON = 7 to disable comparators.
For the 12F683 you need CMCON0 = 7 to disable comparators.

[jcleaver]

bruce i tried both but the pic12f675 works with one of my programmers beter dont have to keep swaping out the pic so thats what i am trying now
really does not mater after i get it working

[Bruce]

How does it work with this?

@ DEVICE PIC12F675,MCLR_OFF,INTRC_OSC_NOCLKOUT,WDT_OFF,BOD_ON,PWRT_ON
ANSEL = 0         
CMCON = 7  
OPTION_REG = 0    
TRISIO = %00100011
WPU = %00000011

' Example program from manual to blink an LED connected to gpio.4 about once
' a sec
led var gpio.0

loop:
   if  led = 1 then
       low 2
   else
       high 2
   endif

   HIGH gpio.4
   ' Turn on LED connected to gpio.4
   Pause 1000    ' Delay for .5 seconds
   LOW gpio.4
   ' Turn off LED connected to gpio.4
   Pause 500       ' Delay for .5 seconds 
   Goto loop       ' Go back to loop and blink LED forever
   End

[jcleaver]

this functions but not as expected at first pin to v+ caused change
than after short time v- caused change which is what i would expect
dont quiet understand inital operation but this is doing what i want
thanks

[jcleaver]

this program works but still get times when it functions backwards
should be gnd to pin to work but sometimes after downloading program
it will be just the oppisite + volts to pin

any changes that will stop this from accuring

[Bruce]

Are you sure it's not a hardware problem? I ran this on a 12F675, and it works
exactly as expected. No matter how many times I re-program it.

[jcleaver]

bruce:
not 100 % sure but seems strange that sometimes + volts cause the pic the way - volts should than sometimes it works just the right way - volts causes the pic to respond properly is there some sort of start up or setting that could cause this maybe pullup not coming on?