Отправлено DSN 05 февраля 2004 г. 20:01 В ответ на: Как работать с обработчиками прерываний в MPLAB C18 v 2.20? отправлено vistan 05 февраля 2004 г. 19:46

C:\Program Files\mcc18\example\interrupt - лежит тут.

//=============================================================================
// Software License Agreement
//
// The software supplied herewith by Microchip Technology Incorporated
// (the "Company") for its PICmicro® Microcontroller is intended and
// supplied to you, the Company’s customer, for use solely and
// exclusively on Microchip PICmicro Microcontroller products. The
// software is owned by the Company and/or its supplier, and is
// protected under applicable copyright laws. All rights are reserved.
// Any use in violation of the foregoing restrictions may subject the
// user to criminal sanctions under applicable laws, as well as to
// civil liability for the breach of the terms and conditions of this
// license.
//
// THIS SOFTWARE IS PROVIDED IN AN "AS IS" CONDITION. NO WARRANTIES,
// WHETHER EXPRESS, IMPLIED OR STATUTORY, INCLUDING, BUT NOT LIMITED
// TO, IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
// PARTICULAR PURPOSE APPLY TO THIS SOFTWARE. THE COMPANY SHALL NOT,
// IN ANY CIRCUMSTANCES, BE LIABLE FOR SPECIAL, INCIDENTAL OR
// CONSEQUENTIAL DAMAGES, FOR ANY REASON WHATSOEVER.
//
//=============================================================================
// Filename: MAIN.C
//=============================================================================
// Author: Mike Garbutt
// Company: Microchip Technology Inc.
// Revision: 1.00
// Date: 04/26/2001
//=============================================================================
// Compiled using MPLAB-C18 V1.00.31
// Include Files: P18C452.H V1.14.2.2
//=============================================================================
//
// Example code to generate a TMR0 interrupt and toggle LEDs on pins RB0 and
// RB7. Toggles RB0 in the interrupt routine and sets RB7 to match RB0 in the
// main routine. This demonstrates that code is executing in both routines.
//
//=============================================================================

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

#include

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

void main (void);
void InterruptHandlerHigh (void);

union
{
struct
{
unsigned Timeout:1; //flag to indicate a TMR0 timeout
unsigned None:7;
} Bit;
unsigned char Byte;
} Flags;

//----------------------------------------------------------------------------
// Main routine

void
main ()
{
Flags.Byte = 0;
INTCON = 0x20; //disable global and enable TMR0 interrupt
INTCON2 = 0x84; //TMR0 high priority
RCONbits.IPEN = 1; //enable priority levels
TMR0H = 0; //clear timer
TMR0L = 0; //clear timer
T0CON = 0x82; //set up timer0 - prescaler 1:8
INTCONbits.GIEH = 1; //enable interrupts
TRISB = 0;

while (1)
{
if (Flags.Bit.Timeout == 1)
{ //timeout?
Flags.Bit.Timeout = 0; //clear timeout indicor
LATBbits.LATB7 = LATBbits.LATB0; //copy LED state from RB0 to RB7
}
}
}

//----------------------------------------------------------------------------
// 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 ()
{
if (INTCONbits.TMR0IF)
{ //check for TMR0 overflow
INTCONbits.TMR0IF = 0; //clear interrupt flag
Flags.Bit.Timeout = 1; //indicate timeout
LATBbits.LATB0 = !LATBbits.LATB0; //toggle LED on RB0
}
}

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