--- Gordon Varney <gordonv@IAMNEE.COM> wrote:
> What am I doing wrong??????? I would appreciate any
> help.
>
> Note: this code works on a PIC12C671.

<snip>

> void ADtest(void) {   //read the input voltage
>      do {
>      restart_wdt();
>           //          value = read_adc();    //read
> the ADC
>     #asm asis
>           bsf    0x1F,0x0
>           nop
>           bsf    0x1F,0x1
>           nop
>     ag:
>           btfsc  0x1F,0x1          //I do not see
> the compiler turning
> this bit on or off
>           goto   ag                    //using the
> read_adc() command,
> so I wrote it in ASM.
>           movf   adresh,W      //I get a small
> variation in the output
> but no ADC to speak of.
>           movwf  value
>           bcf    0x1F,0x0
>      #endasm

<snip>

Gordon,
the 12C671 is an 8-bit ADC, the 12F675 is 10-bit.  You
need to select if you want the value left-justified or
right-justified in ADRESH and ADRESL (look at the ADFM
bit in ADCON0).  If you have it right-justified, then
ADRESH only has the top 2 msb's, and you won't get
much response!

hope this helps,
Eric

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