need help setting up comparators in PIC18F87J10

[zilog]

I want Comparator 1 together with the internal voltage reference to input a signal on RF5, compare it with Vref ~0.5V, and output the result on pin RF2.

I have tried with the code below with no success - what am I doing wrong? The problem manifests itself that no matter what input level on RF5, I always get logic high on RF2.

[zilog]

I forgot to mention that Vdd-Vss = 2.5V in my application.

[Kenny]

The configuration that you have setup has no output to a port pin.
C1OUT is a bit in CMCON (see data sheet Fig. 21-1).

BTW the CCS constants defined in 18F87J10.h would make the code easier to read and see this kind of problem.