I believe you should wait for a while before you start the conversion.
Put a delay in between ADC ON and GO, and see if that helps.

Tamas


On Mon, Feb 8, 2010 at 2:57 PM, alan smith <micro_eng2@yahoo.com> wrote:
> Since its a little difficult to run the debugger on a 10F, just having th=
e programming pins available (I prefer not buying the 10F adapter deal) I'm=
 trying to use a 10F as a programmable one-shot.
>
> I have code running now that toggles an LED so I know the timer portion i=
s working fine. I connect up a pot to GP0, measure the voltage on the pin t=
o make sure its adjusting, etc...so external stimulus is there.
>
> Should be pretty straight forward...Ive done analog capture many a time i=
n 16F and 18F
>
> setup the control and port
>
> =A0 =A0 =A0 =A0movlw =A0 b'01000001'
> =A0 =A0 =A0 =A0 =A0 =A0 =A0; =A0 ||||||||_ ADC on
> =A0 =A0 =A0 =A0 =A0 =A0 =A0; =A0 |||||||__ ADC go/done
> =A0 =A0 =A0 =A0 =A0 =A0 =A0; =A0 ||||||___ analog channel select
> =A0 =A0 =A0 =A0 =A0 =A0 =A0; =A0 |||||____ analog channel select
> =A0 =A0 =A0 =A0 =A0 =A0 =A0; =A0 ||||_____ x
> =A0 =A0 =A0 =A0 =A0 =A0 =A0; =A0 |||______ x
> =A0 =A0 =A0 =A0 =A0 =A0 =A0; =A0 ||_______ Analog 0 on GP0 (1=3Danalog)
> =A0 =A0 =A0 =A0 =A0 =A0 =A0; =A0 |________ Analog 1 on GP1
> =A0 =A0 =A0 =A0movwf =A0 adcon0
>
> =A0 =A0 =A0 =A0movlw =A0 b'11111011' =A0 =A0 ; set gp2 as an output
> =A0 =A0 =A0 =A0tris =A0 =A0gpio
>
>
> READ_ANALOG
> =A0 =A0 =A0 =A0bsf =A0 =A0 adcon0,GO =A0 =A0 =A0 ; start a/d conversion
> wait4done
> =A0 =A0 =A0 =A0btfsc =A0 adcon0,GO =A0 =A0 =A0 ; test if done
> =A0 =A0 =A0 =A0goto =A0 =A0wait4done =A0 =A0 =A0 =A0 =A0 =A0 =A0 ;
> =A0 =A0 =A0 =A0movf =A0 =A0adres,w =A0 =A0 =A0 =A0 ; yes, load result
> =A0 =A0 =A0 =A0movwf =A0 scaleValue =A0 =A0 =A0 =A0 =A0 =A0 =A0; and save=
 as value
> =A0 =A0 =A0 =A0retlw =A0 0
>
>
> I have in the main body of the code where I use scaleValue to load for my=
 timer..ie...0-255 seconds.
>
> Anyone done analog capture with the 10F and can see anything wrong here? =
=A0Timer isn't loading with a short value..I have .5V sitting on the pin so=
 that should be about 16 using a 3.3V supply. =A0Doens't appear to be doing=
 this.
>
>
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