ADC setup on 12F1822 ??

[swr999]

Thanks ^^^
I am doing the same register setups as you show, except that I'm using AN2 (ANSELA=%0100, TRISA=%01100). In addition I have ADCON0.0=1 (enable ADC). I'll try removing this. I'll work on this and post my results.
Thanks again!

[richard]

ADCON0.0=1 serves no purpose the ADCIN code will do that for you

[HenrikOlsson]

This may be obvious but since you didn't post your code I'll say it anyway.
The variable you're putting the result in is declared as a WORD, right?

/Henrik.

[richard]

looks like "Occam's Razor" may have struck again

[swr999]

... The variable you're putting the result in is declared as a WORD, right? /Henrik.

Yes, it's a WORD. But thanks!

[tekart]

Not sure if you figured this out, but 10bit AD need to be read out as RIGHT justified, and 8 bit reads should be LEFT justified. Here's a config that works for 8-bit:
ADCON0.0 = 1 ' AD ON
ANSELA = %00000001 ' select analog vs digital (1=analog)
ADCON1.7 = 1 ' bit7 = 1 = LEFT justified
define adc_bits 8 ' set ADC as 8 bit

[swr999]

Thank you^^^. Yes, I got it sorted out. I think my initial confusion resulted from some interaction between PBP3 DEFINEs for the ADC module and some direct settings I was also doing on some ADC-related registers. Everythings good now. Thanks again!