On Wed, May 28, 2003 at 12:26:34AM -0600, stesquib@MINES.EDU wrote:
> Hello, The following ADC code for a 12F675 constantly returns zero (puts 0 in
> ADRESH).

You mayyy need to initialize CMCON=7, but that may just be a bug in
MPASM not implementing option overrides.

But mainly:

>  movlw  0x00C                   ;left justified, channel 3 (gpio 4)
>  movwf  ADCON0                  ;Vref = Vdd

I didn't decode 0xC fully, but it's 12, which is even, and ADON is
bit 1, so you haven't turned on the A/D module.

--
Ben Jackson
<ben@ben.com>
http://www.ben.com/

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