Comparator ( internal connection )

[Testadura]

Hi,

I have need to connect C1- with C2- by software .
( see PIC16781 datasheet page 96 figure 12-5 )
The connection is internal , but in the register I haven't found the appropriate bit control.

I ' am trying to use two comparator with common input (C1- an C2-) while C1+, C2+ are connected to external pin


Any idea?

[PCM programmer]

The 16C781 data sheet has sample code (in ASM) for a window
comparator in Figure 12-3. You can convert that code to CCS C.
Some of the ASM code can be converted to use CCS built-in functions.

But CCS apparently doesn't have any built-in functions for the
comparator in version PCM version 3.212. The easiest way to
fix this problem is by writing directly to the PIC's registers.

For example, here is the code from Figure 12-3 that configures
the comparator registers.