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Can't get interrupt to work

Paul Radke

Hi, I am sorry if there is already a thread open with this problem, I just couldn't find it.

I have a problem which should be easy to solve for you guys. I am trying to get a simple interrupt service routine to run, when i press the INT0 button on a MCB2300 Board (LPC2368). I didn't chance the startup.s code at all. When I press the button, nothing happens. Please help me.

#include <LPC23xx.h>

int main(void) {

PINSEL10 = 0;
FIO2DIR  = 0x000000FF;
FIO2MASK = 0x00000000;
FIO2CLR = 0xFF;
FIO2SET =  0x55;

VICIntSelect = 0x00008000;
VICIntEnable = 0x00008000;


while(1){

}
return 0;
}


int i;

void __irq FIQ_Handler (void)  {
        FIO2DIR  = 0x000000FF;
        FIO2MASK = 0x00000000;
        //Here goes the interrupt
        for ( i = 0; i <10000; i++) {
                FIO2CLR = 0xFF;
                FIO2SET =       0xAA;
        }
        FIO2CLR = 0xFF;
        VICVectAddr = 0x00000000;
}

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