Acá está el código que te comentaba del PICOS18:
#include "define.h"
/**********************************************************************
* Function you want to call when an IT occurs.
**********************************************************************/
extern void AddOneTick(void);
/*extern void MyOwnISR(void); */
void InterruptVectorL(void);
void InterruptVectorH(void);
/**********************************************************************
* General interrupt vector. Do not modify.
**********************************************************************/
#pragma code IT_vector_low=0x18
void Interrupt_low_vec(void)
{
_asm goto InterruptVectorL _endasm
}
#pragma code
#pragma code IT_vector_high=0x08
void Interrupt_high_vec(void)
{
_asm goto InterruptVectorH _endasm
}
#pragma code
/**********************************************************************
* General ISR router. Complete the function core with the if or switch
* case you need to jump to the function dedicated to the occuring IT.
* .tmpdata and MATH_DATA are saved automaticaly with C18 v3.
**********************************************************************/
#pragma code _INTERRUPT_VECTORL = 0x003000
#pragma interruptlow InterruptVectorL
void InterruptVectorL(void)
{
EnterISR();
if (INTCONbits.TMR0IF == 1)
AddOneTick();
/*Here is the next interrupts you want to manage */
/*if (INTCONbits.RBIF == 1) */
/* MyOwnISR(); */
LeaveISR();
}
#pragma code
/* BE CARREFULL : ONLY BSR, WREG AND STATUS REGISTERS ARE SAVED */
/* DO NOT CALL ANY FUNCTION AND USE PLEASE VERY SIMPLE CODE LIKE */
/* VARIABLE OR FLAG SETTINGS. CHECK THE ASM CODE PRODUCED BY C18 */
/* IN THE LST FILE. */
#pragma code _INTERRUPT_VECTORH = 0x003300
#pragma interrupt InterruptVectorH nosave=FSR0, TBLPTRL, TBLPTRH, TBLPTRU, TABLAT, PCLATH, PCLATU, PROD, section(".tmpdata"), section("MATH_DATA")
void InterruptVectorH(void)
{
if (INTCONbits.INT0IF == 1)
INTCONbits.INT0IF = 0;
}
#pragma code
extern void _startup (void);
#pragma code _RESET_INTERRUPT_VECTOR = 0x003400
void _reset (void)
{
_asm goto _startup _endasm
}
#pragma code
/* End of file : int.c */
Saludos.
Martín
