Can't get RA0 to read inputs?!?

[skimask]

define OSC 20       'Set PBP Osc clock to 20Mhz   <----- use DEFINE not define
CMCON0 = 0     'Turn off comparators, force set to 0 (off)

Download and double-check your 16F684 datasheet (DS41202F, Section 8.2, Figure 8-5, Page 58, block in lower right corner).

Common problem, trips me up about every other month on one project or another...

[mister_e]

define OSC 20 'Set PBP Osc clock to 20Mhz <----- use DEFINE not define

DEFINE is not case sensitive, but the text to it's right edge yes.

[kevj]

Piece of @#$#@!!!


Well that was easy enough. Stupid pic.

I was about 3 cuss words away from going out for cigarettes. I've been spinning my wheels on this problem since early yesterday morning. It seems having a note about this somehwere in the oh...... PORTA section would have been helpful. "Confure them as inputs this way, disable the ananlog ANSEL, yep, and oh by the way.... the comparators are installed to be in your way by default, make sure you set that register also". Blah!!


Okay, thanks guys - and thanks so much for the quick response. I really was at my witts end here. I was starting to wonder if I had a bad batch of PIC's or something, or if I'd managed to zap them somehow.

It's all good.


BTW for anyone else reading this:

CMCON0 = %00000111 'Turn off comparators (CMCON0.0:2 = 111)

is the solution

[skimask]

Piece of @#$#@!!!
Well that was easy enough. Stupid pic.
I was about 3 cuss words away from going out for cigarettes.

If it was me, I'd go out for a smoke break anyways...whether the problem was fixed or not...and keep cussin', regardless...

CMCON0 = %00000111 'Turn off comparators (CMCON0.0:2 = 111)

Keep your eyes on that and the ANSEL as you move thru the various chips. They change a bit here and there.