strange A2D 5V scaling result - 16F819

[Darrel Taylor]

While it is incorrect, the results are not strange at all.

The Modulus operator only returns a decimal number if you are dividing by a factor of 10 (10,100,1000).

When you // 1024, the result will be from 0 to 1023.
The numbers at 201, 202 are where the value goes over 1000, but you are displaying the lowest 3 digits.

For 3 decimals, the easiest way to do it is ...

W0 = A2Dvalue * 5000
W0 = DIV32 1023

DEBUG REP $00\8,13,10, "Voltage = ",DEC W0/1000,".",DEC3 W0, "   A2D value = ",DEC A2Dvalue

[Max Power]

Darrel,

Thanks so much for the insight and the code correction. It works as expected. Now, I can see a light at the end of this tunnel. Thats what I get for saying "that should be an easy project, shouldn't take too much time at all"...mental note: never say that.

Thanks again.

[Darrel Taylor]

The end, or the train?
<img Height=160 Width=212 src="http://www.pbpgroup.com/files/Freight-train-light.jpg" />

Cheers,
&nbsp; &nbsp; DT