16F628 PortA pin connections - wierd

[john meiers]

Doesn't the ALL_DIGITAL = TRUE command take care of that? I even tried replacing that with CMCON command, but still no worky. With the PORTA.0 pin tied high through the 10k, I still read practically 0v on the pin with the VMM. Here is the code preface:

Device = 16F628A
XTAL = 4

ALL_DIGITAL = TRUE
PORTB_PULLUPS = On
TRISB = 0

Symbol SW1 = PORTA.0
Symbol LED1 = PORTB.0
Symbol LED2 = PORTB.1

Dim CounterA As Byte

TRISA = $F0
PORTB = 0

Any ideas?

[Melanie]

Any ideas?

Yes, you're on the wrong forum. This one is for compilers that work...

But if your pin is showing 0v... it looks like the pin is switched to OUTPUT and not INPUT. TRIS statements take care of that in the MeLabs compilers... but from your code it doesn't look like you've one of those.

Oh... looking again... your TRISA=$F0 has PortA.0 as an OUTPUT.

[john meiers]

ouch..having a bad day? I'm using the Proton IDE Lite compiler...it works great and its free. But fixing that TRIS statement did the trick, so thank you for your help!