interrupt not working

[bbgil]

interrupt pic mikroc rbie

hi. i'm practicing mikroC but i cannot make the interrup work. its a very simple program, switch at RB0 as interrupt and count the number of time switch is on and off. put into port A the final count. its compilling but the output seems to be fix at output 9 when i run the PIC in the breadboard. Can someone point out what i'm doing wrong here. here is the code. thanks in advance.
unsigned cnt;
unsigned pc;

void interrupt() {
cnt++;
pc=0x0A;
cnt = cnt-pc;
if (cnt!=0) { PORTA =cnt;}
else { cnt =0;PORTA=cnt;}
INTCON = 0x02 ; }


void main() {

TRISB = 0xFF; // PORTB is input
PORTB = 0xFF; // Initialize PORTB
TRISA=0;
PORTA=0;
INTCON = 0x98; // Enable RB0 interrupt
cnt = 0; // Initialize cnt

while (1) {
PORTA = cnt;
}

}//~!

 

[aupa]

i'm not an expert in PICs but the interruption i think isn't ok.

void interrupt() { 
...

i've studied C51 and i write this:

void int_name() interrupt #{
...
}

the # is the interruption number.

for example:

extern interruption 0 -> #=1

void int_rutine() interrupt 1{
...
}

 

[dilraj.n]

hi,

please remove the line INTCON = 0x02 ; from ur interrupt function and test it

 

[bbgil]

fixed the problem! its the INTCON setting on the interrupt. Should be

unsigned cnt;
unsigned pc;

void interrupt() {
cnt++;

if (cnt > 0x09) { cnt =0;PORTA=cnt;}
else { PORTA =cnt;}
INTCON = 0x10 ; }// set INTE and clear the flag


void main() {

TRISB = 0xFF; // PORTB is input
PORTB = 0xFF; // Initialize PORTB
TRISA=0;
PORTA=0;
INTCON = 0x90; // Enable RB0 interrupt, GIE and RBIE
cnt = 0; // Initialize cnt

while (1) {
PORTA = cnt;
}

}//~!

I failed to set the interrupt the first time. Must set it up and cleari the flag at the same time after the interrupt.

thanx for all the help.