Can't get POT work on P12f675 - Newbie

[Acetronics2]

Come on guys, did I ask such a stupid question that has to be ignored?

Hi,

Yes and No ...

If you had read your Datasheet ...you could have noticed that GP3 is not a pin like the others ...

BUT, in your favour, you are not to know how "POT" works ...

So, just remember POT needs the pin to turn from time to time into an OUTPUT ...

And this is written nowhere in the manual ...

The Proof :

POTT    movwf   RM1             ; Save bit mask
        call    HIGHT           ; Set pin high to charge cap
        movlw   10              ; Charge cap for 10ms
        call    PAUSE
        movf    RM1, W          ; Get bit mask
        iorwf   INDF, F         ; Set pin to input
        bcf     FSR, 7          ; Point to port
        xorwf   INDF, F         ; Flip bit to low
        clrf    R0              ; Zero counter
        clrf    R0 + 1
potloop bsf     FSR, 7          ; Point to TRIS
        movf    RM1, W          ; Get bit mask
        xorwf   INDF, F         ; Set pin to output
        CLRWDT?NOP		; Discharge a little (& clear Watchdog timer)

Alain

Change pin used ... no other solution ( ... RCTime won't work either )