Stefan,

Check the left/right justification of the result as set by
ADCON1, bit 7.  If you plan to use all 10 bits of the result,
then your result should be right-justified so set this bit.

Your conversion result will be in ADRESH:ADRESL as follows:

000000xx:xxxxxxxx

where '0' are the leading zeros in front of the result and 'x'
represents the conversion result.

But be careful with ADRESL; the low byte of the result.  It is
in Bank1 so you need to change STATUS, RP0 to access it.

Andrew
akieran_at_ureach.com


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---- On    , dimov stefan (stefan_d6@YAHOO.COM) wrote:

> I've tried to measure DC and display the corresponding
> number from the ADC on a LCD .I used pic16F877. For
> initiation of the ADC I used AN546.
>   But when I'm  changing the voltage gradually from 0V
> to 5V the LCD shows only four values respectivly : 0,
> 257, 514, 771.
>   Where is the culprit?
>
>
>
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