Thanks again Henrik,
This works pretty good now. I would still like to get rid of the sound command and replace it with a steady HPWM signal eventually, but this will get me by for now and it doesn't look like the 10F222 even has PWM capability.

Jim

Code:
@  __CONFIG _MCLRE_OFF & _CP_OFF & _WDT_ON & _IOFSCS_8MHZ
 
DEFINE OSC 8 

TRISIO = %00111101
ADCON0   = %01000001	' GPIO 0 = Analog, ADC Enabled

ANA_IN   VAR  GPIO.0    ' GPIO0/ANA0/PDAT
SPK      VAR  GPIO.1    ' GPIO1/ANA1/PCLK
Trigger  VAR  GPIO.2    ' GPIO2/T0CKI
'        VAR  GPIO.4    ' GPIO3/MCLR/VPP 
  
Tone     VAR  byte 
GO_DONE  VAR  ADCON0.1	' Alias to GO/DONE bit for ADC
  
Main: 
   GO_DONE = 1		    ' Start the conversion
   WHILE GO_DONE : WEND	' Wait for it to complete.
   Tone = ADRES
   if Trigger then       
      Sound SPK,[Tone / 4 + 50, 1] 
   endif
Goto Main

End

Quote Originally Posted by HenrikOlsson View Post
I have never used a 10F part before but looking at the datasheet that has got to be the easiest ADC there is to run. No Clock source selection, no left/right justification, no sample time configuration, nothing, three lines of code pretty much.
Code:
GO_DONE VAR ADCON0.1	' Alias to GO/DONE bit for ADC

ADCON0   = %01000001	' GPIO 0 = Analog, Channel 0 connected to ADC, ADC Enabled
GO_DONE = 1		' Start the conversion
WHILE GO_DONE : WEND	' Wait for it to complete.

' Result is now availabe in ADRES.
Of course, not having used one before, may mean I'm missing something but it really looks like there's nothing more to in than that. If you can setup the CCP module manually you can figure out how to operate this ADC :-)

/Henrik.