[SOLVED] Need help PIC18F4550 comparator simulation in proteus

[john blue]

I have the following codes. But, proteus doesnt seems to work. Anyone can help? Thanks in advance.

#include <htc.h>


void main(){


 	CMCON = 0x01;   //Outputs' Mode

  	TRISA0 = 1;    // Configure as input pin for negative input of Comparator 1
    TRISA3 = 1;    // Configure as input pin for positive input of Comparator 1
	TRISA4 = 0;    // Output

	TRISA1 = 1;

while(1){


    
	
}

	
	
	}

 

[ckshivaram]

what output do you expect from this program????????

 

[bigdogguru]

Hi John,

Can you upload your zipped Proteus design?

 

[john blue]

The output stays at low all the time, not sure why. Here, is the files.

View attachment comparator test.rar

 

[john blue]

It seems that the comparator didnt compare the inputs

 

[bigdogguru]

Got it.

I'll load your Proteus design and see what I can figure out.

I'm finishing up some coding for a client's project and should be finished in a few hours. I'll troubleshoot your Proteus project as soon as I finish.

BigDog

---------- Post added at 02:22 ---------- Previous post was at 02:19 ----------

By the way, these intermittent forum anomalies are starting to drive me crazy. It took me three attempts to post my last message.

 

[john blue]

Tried on hardware and it works.

 

[bigdogguru]

I still have not been able to achieve expect result in Proteus. I'm starting to believe it is a bug.