HPWM and A to D interaction question 18F252

[sougata]

Hi,

According to you when your CCP pin is floating (there is no load connected) you are experiencing the same problem. This perhaps indicates that your HPWM is not playing anything with the VDD line as this is Vref as well (I assume). A schematic post (with layout if possible) would be appreciated. By that time try playing with the sampling frequency (use the RC clock) and a bit more time for the sampling.

[tcbcats]

I did not find the problem but did get the code working.
I was setting up the A to D with the direct registers and had the setup wrong.
I just changed the code to use the ADCIN command and all is now working.

Something was messed up where I was reading the A to D justified register into a variable word using. .highbyte and. .Lowbyte

Yes this is on a breadboard but the results are now very stable as expected.
Thanks all…
tcbcats