Quote Originally Posted by Darrel Taylor
When programming the F630 on the Pickit, did you check the "Device Power" checkbox?

Without it, the PIC in the "Evaluation Socket", and the MCP3221 won't get power.
Yep, the reason I know the reading is not being made is because the LED's are not changing (toggling)

Quote Originally Posted by Darrel Taylor
Other than that, I think it's down to checking all the basic troubleshooting items, such as.

Check continuity, from F630 pins 9 and 10 to the MCP3221 pins 4 and 5.

Is there power getting to all the chips involved.

Does Pin1 match up on the connectors between the 2 boards

As you can tell, I'm focusing on the hardware, because the program looks fine.<br><br>
OK ... I'll do a hardware check on the i2c lines + the power lines from the PicKit - from what you are saying it does not look like software!

Thanks,

Rod