I wrote a external interrupt code for PIC18LF47k40 on MPLAB X IDE to toggle a LED when rising edge will be occurred. It is not working, but the same type code for PIC18F452 is working fine, only I modified the Register. Can you please help me why my below code for PIC18LF47K0 is not working?

below my code:

#define _XTAL_FREQ 16000000
#include <xc.h>
#include <pic18lf47k40.h>
#include <stdio.h>

void main(void)
{
     TRISDbits.TRISD6=0;             //RD pin as output declaration
     PORTDbits.RD6=1;               

     TRISBbits.TRISB2=1;        /* Make INT2 pin as an input pin*/
     ANSELBbits.ANSELB2 = 0;        //making digital input
     INTCONbits.GIE=1;            /* Enable Global Interrupt*/ 
     INTCONbits.INT2EDG=1;      /* Set Interrupt on rising Edge*/
     PIE0bits.INT2IE=0;        /* Enable INT2 external interrupt*/
     PIE0bits. IOCIE=1;          //enable interrout on change
     PIR0bits.INT2IF=0;           // Clear the interrupt flag
   
while(1)
{
}

}


void __interrupt() isr(void)
{        
        PORTDbits.RD6^=0;    //making togle RD6 pin   
        PIR0bits.INT2IF=0;  // Clear the interrupt fla         
}

Please help me to solve this. Thanks

Mod edit: code tags - JohnInTX

 

I would eliminate this line

PIE0bits. IOCIE=1; //enable interrout on change

It's not needed for INT0, INT1, and INT2... if you do need it for something else then you will need to add checking in your interrupt routine to make sure you are working with the right interrupt.

Also when setting outputs always use LATx instead of PORTx.

Instead of:

PORTDbits.RD6^=0; //making togle RD6 pin

do

LATDbits.RD6^=0; //making togle RD6 pin

I don't have any links on hand, but there are possible issues with the way the PIC works with the PORTx registers internally.

EDIT:

Also

PIE0bits.INT2IE=0; /* Enable INT2 external interrupt*/

needs to be

PIE0bits.INT2IE=1; /* Enable INT2 external interrupt*/

 

You do want INT2 to trigger, right? You might have swapped enable bits.

 

I would eliminate this line

PIE0bits. IOCIE=1; //enable interrout on change

It's not needed for INT0, INT1, and INT2... if you do need it for something else then you will need to add checking in your interrupt routine to make sure you are working with the right interrupt.

Also when setting outputs always use LATx instead of PORTx.

Instead of:

PORTDbits.RD6^=0; //making togle RD6 pin

do

LATDbits.RD6^=0; //making togle RD6 pin

I don't have any links on hand, but there are possible issues with the way the PIC works with the PORTx registers internally.

EDIT:

Also

PIE0bits.INT2IE=0; /* Enable INT2 external interrupt*/

needs to be

PIE0bits.INT2IE=1; /* Enable INT2 external interrupt*/

thanks for your suggestion. now the code is working. actually it was my mistake. i didn't notice that.