ext. Interrupt mit C18 Compiler

//------HEADER-----------------

#include <stdio.h>

#include <stdlib.h>

#include <p18cxxx.h>

#include <delays.h>

//------CPU SETTINGS-------------

#pragma config MCLRE = OFF  //RE3 input pin enabled; MCLR disabled

#pragma config XINST = OFF

//#pragma config FOSC = INTIO1  //Internal oscillator block, CLKOUT function on RA6, port function on RA7

#pragma config FOSC = INTIO2    //Internal oscillator block, port function on RA6 and RA7

#pragma config INTOSCSEL = LOW  //LF-INTOSC in Low-power mode during Sleep

#pragma config RETEN = OFF      //Ultra low-power regulator is Disabled (Controlled by REGSLP bit)

#pragma config WDTEN = OFF       //WDT is controlled by SWDTEN bit of the WDTCON register

#pragma config WDTPS = 2048  //Watchdog Timer Postscale Select bits 4ms*2048

#pragma config FCMEN = OFF  //Fail-Safe Clock Monitor disabled

#pragma config IESO =  OFF  //Oscillator Switchover mode disabled

#pragma config PWRTEN = ON   //enable Power-up Timer

#pragma config BOREN = OFF  //Brown-out Reset disabled in hardware and software

#pragma config SOSCSEL = DIG    //Digital (SCLKI) mode; I/O port functionality of RC0 and RC1 is enabled

//-----FORWARD------------------------------------------------------------------------------

void main (void);

void InterruptHandlerHigh (void);  //Interrupt

//-------main-------------------------------------------------------------------------------

void main(void)

{

//init pins

  TRISA=0x00;

  TRISB=0xff;

  TRISC=0x00;

  PORTA=0xff;

  PORTC=0xff;

  INTCONbits.GIE=0;      //disable all interrupts

//init Debug Messages

  OSCCON=0b01100000;  //8MHz

  OSCTUNEbits.PLLEN=0;  //x4 off

//  OSCCON=0b00110000;  //1MHz

//  OSCTUNEbits.PLLEN=0;  //x4 off

//activate all interrupts

  INTCON3bits.INT1IE=1;    //Enables the INT1 external interrupt

//  INTCON3bits.INT2IE=1;    //Enables the INT2 external interrupt

  INTCONbits.GIE=1;

  while(1) //endless loop

  {

            PORTC=0xff;

            Delay10KTCYx(1000);

            PORTC=0x00;

            Delay10KTCYx(1000);

  }//end while

}//end main

//===========================================================================================

//-------------------------------------------------------------------------------------------

// High priority interrupt vector

#pragma code InterruptVectorHigh = 0x08

void InterruptVectorHigh (void)

{

  _asm

    goto InterruptHandlerHigh           //jump to interrupt routine

  _endasm

}

//-------------------------------------------------------------------------------------------

// High priority interrupt routine

#pragma code

#pragma interrupt InterruptHandlerHigh

void InterruptHandlerHigh ()

{

/*

    //extern interrtupt INT2

    if (INTCON3bits.INT2IF)

    {//check for INT2

        INTCON3bits.INT2IF = 0;         //clear ext interrupt flag

    }

*/

    //extern interrtupt INT1

    if (INTCON3bits.INT1IF)

    {//check for INT1

        INTCON3bits.INT1IF = 0;         //clear ext interrupt flag

        PORTA=0x00;

        Delay10KTCYx(100);

        PORTA=0xFF;

    }

}