[SOLVED] How to disable comparator using pic16f877 ?

[Mzz Amin]

i'm programming using mikroc c.
i'm still an amateur in the filed of c programming. I wanna copy that i found in mikro c library and i'm missing a trick whcich is how to disable the comparator because i'm working on pic16f877

 

[TiagoRibeiro]

According to the datasheet on page 136 the comparator register is CMCON, which works on 8 different ways.
Comparators Off (POR Default Value)
CM2: CM0 = 111
To disable the comparison, just put in your start routine code:
CMCON = 111;
For more information check the datasheet.
https://ww1.microchip.com/downloads/en/DeviceDoc/39582C.pdf
Hope this helps.
Regards, Tiago Ribeiro

 

[betwixt]

Correction: those are the bit values, CM2 = 1, CM1 = 1, CM0 = 1. If you want to turn the comparators off write 0x07 to CMCON like this:
CMCON = 0x07;

or, if the other bits in CMCON are used elsewhere in the program and shouldn't be changed, use CMCON |= 0x07; instead.

Brian.

 

[Mzz Amin]

I would thank you, both of you, for your help but i'm working on pic16f877 and not pic 16f877A.
I've made more research and i found that there is nothing to be done to enable or disable comparater in pic16f877 because there is not such a thing, if i've understood really well what i've read and i've copied the code normally working on another pic and i've deleted the "disable comparator " instruction " and it worked well. thank you again

My best regards
Amin