/*

 * Project Frontplatte

 *

 * interrupt.c  -  handle interrupts

 *

 * This file is released under the GNU General Public License. Refer

 * to the COPYING file distributed with this package.

 *

 * (c) 2007 Carsten Presser cpresser AT fsing.uni-sb.de

 */

#include <p18cxxx.h>

#include "interrupt.h"

#include "rc5.h"

#include "myi2c.h"

#include "user.h"

#include "io_cfg.h"

#include "delay.h"

/** V A R I A B L E S **********************************************/

unsigned char c;

/** I N T E R R U P T  V E C T O R S *****************************************/

#pragma code high_vector=0x0808 //(0x0808)

void interrupt_at_high_vector(void)

{

    _asm goto high_isr _endasm

}

#pragma code

#pragma code low_vector=0x0818 //(0x0818)

void interrupt_at_low_vector(void)

{

    _asm goto low_isr _endasm

}

#pragma code

/** C O D E ******************************************************************/

#pragma interrupt high_isr

void high_isr(void)

{

/* Timer0 */

	if (INTCONbits.TMR0IF)

	{

		INTCONbits.TMR0IF 	= 0;	// clear flag

		rc5_scrap();

	}

/* Infrared Interrupt */

	if (INTCON3bits.INT2IF)

	{

		rc5_decode();

		INTCON3bits.INT2IF	= 0;						// clear flag

		INTCON2bits.INTEDG2 = !INTCON2bits.INTEDG2;		// toogle edge detect...

	}

}

#pragma interruptlow low_isr

void low_isr(void)

{

/* I2C Interrupt Line */

	INTCONbits.GIEL		= 0;

	if (INTCONbits.RBIF) 			// i2c_int

	{

		PORTB			= PORTB;	// end mismatch condition... (see page 114)

		INTCONbits.RBIF	= 0;		// then clear the flag!

		if (PIN_I2C_INT == 0) 			// ignore falling edge

		{

			gg_ioflags |= FLAG_I2C;

		}

	} // end of i2c-int

	if (PIR2bits.TMR3IF)

	{

		PIR2bits.TMR3IF = 0;

		c++;

		if (c > 0x08)

		{

			c = 0x00;

			gg_ioflags |= FLAG_COUNTER;

		}

	}

	INTCONbits.GIEL		= 1;

}

#pragma code