/*

  * 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