A2D issues on PIC16F876A

[earltyso]

they are all WORD length

[Bruce]

The RXM RSSI only outputs ~16mV/dB, so a big noise factor should really make this reading swing all over the page.

Shouldn't this be I=H*2 to show battery voltage?

[Darrel Taylor]

    ADCIN PORTA.0, sig1
    ADCIN PORTA.1, VALUE1

Should be ...

    ADCIN 0, sig1
    ADCIN 1, VALUE1

[earltyso]

Bruce,
to answer your question, yep the code should read

 I=H*2

However, the voltage level looked like half the amount (3~4.4VDC) floating all over the place instead of a consistent (~8.9VDC) or so. I included I=H*4 for better resolution.

DT,
I will try making the changes to channels,
thanks,
~still stumped.

[Bruce]

Darrels' note on using the correct arguments with ADCIN should cure it. Using the port bit
reference doesn't set it to the correct channel, so that's the major issue.

[earltyso]

Thanks
DT & Bruce,
You were right about the channel numbers, Don't know were I got the idea to use "porta.?" instead of the # itself. Anyway all is well now. thanks again!