Enabling Comparator / Disabling Comparator PIC 16f1829 Problem

Here is a break down of what is going on.

Using both comparators, one input is C12IN1 (portc.1) and the other is C12IN2 (portc.2).

I am not having an issue with the comparators functions. They are fine but the issue I am having is that I need to read COUT and if it equals 0, I need to ouput on the comparator input pin. I know some of you may say "why?". Lets just say I am playing middle man with a signal.

I thought this would be simple enough and wrote 2 sub-routines. One disables the comparator and sets the port up so I can output and the other re-enables the comparator for the next read. This does not seem to work at all. The program locks up and as far as I can tell, it happens after the comparator is disabled or when it is re-enabled.

Below are my sub-routines for disabling and enabling the comparators and configuring the ports. The comparator enable routine is literally a copy and paste of the configuration at startup that I know works. Again, every part of the program is fine until I have to disable and re-enable comparators then it locks up.

I use PICBasic PRO

DISCOMP:
'------------------
'DISABLE COMPARATOR
DACCON0 = %00000000
DACCON1 = %00000000
CM1CON0 = %00000000
PIR2 = %00000000
CM1CON1 = %00000000
CM2CON0 = %00000000
PIR2 = %00000000
CM2CON1 = %00000000
''''''PORTC SETUP''''''''
ANSELC = %00000000
WPUC = %11111001
INLVLC = %00000000
LATC = %00000000
TRISC = %11111111
'------------------
RETURN

ENCOMP:
'------------------
''''''PORTC SETUP''''''''
ANSELC = %00000110
WPUC = %11111001
INLVLC = %00000000
LATC = %00000000
TRISC = %11111111
'------------------
'ENABLE COMPARATOR
DACCON0 = %00000000
DACCON1 = %00010000
CM1CON0 = %10010110
PIR2 = %00000000
CM1CON1 = %00010001
CM2CON0 = %10010110
PIR2 = %00000000
CM2CON1 = %00010010

RETURN

You need to change your TRISC =00000 during "DISCOMP:" for output?

Quote:

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Originally Posted by mark_s

You need to change your TRISC =00000 during "DISCOMP:" for output?

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While I am setting the tris bit for portc.1 and portc.2 to an input, after it runs that subroutine it flips it to an output therefore no reason to set the tris bit at the time I disable the comparator.