You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
250 lines
6.6 KiB
250 lines
6.6 KiB
/* -*- mode: jde; c-basic-offset: 2; indent-tabs-mode: nil -*- */
|
|
|
|
/*
|
|
Part of the Wiring project - http://wiring.uniandes.edu.co
|
|
|
|
Copyright (c) 2004-05 Hernando Barragan
|
|
|
|
This library is free software; you can redistribute it and/or
|
|
modify it under the terms of the GNU Lesser General Public
|
|
License as published by the Free Software Foundation; either
|
|
version 2.1 of the License, or (at your option) any later version.
|
|
|
|
This library is distributed in the hope that it will be useful,
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
Lesser General Public License for more details.
|
|
|
|
You should have received a copy of the GNU Lesser General
|
|
Public License along with this library; if not, write to the
|
|
Free Software Foundation, Inc., 59 Temple Place, Suite 330,
|
|
Boston, MA 02111-1307 USA
|
|
|
|
Modified 24 November 2006 by David A. Mellis
|
|
Modified 1 August 2010 by Mark Sproul
|
|
*/
|
|
|
|
#include <inttypes.h>
|
|
#include <avr/io.h>
|
|
#include <avr/interrupt.h>
|
|
#include <avr/pgmspace.h>
|
|
#include <stdio.h>
|
|
|
|
#include "WConstants.h"
|
|
#include "wiring_private.h"
|
|
|
|
volatile static voidFuncPtr intFunc[EXTERNAL_NUM_INTERRUPTS];
|
|
// volatile static voidFuncPtr twiIntFunc;
|
|
|
|
void attachInterrupt(uint8_t interruptNum, void (*userFunc)(void), int mode) {
|
|
if(interruptNum < EXTERNAL_NUM_INTERRUPTS) {
|
|
intFunc[interruptNum] = userFunc;
|
|
|
|
// Configure the interrupt mode (trigger on low input, any change, rising
|
|
// edge, or falling edge). The mode constants were chosen to correspond
|
|
// to the configuration bits in the hardware register, so we simply shift
|
|
// the mode into place.
|
|
|
|
// Enable the interrupt.
|
|
|
|
switch (interruptNum) {
|
|
#if defined(EICRA) && defined(EICRB) && defined(EIMSK)
|
|
case 2:
|
|
EICRA = (EICRA & ~((1 << ISC00) | (1 << ISC01))) | (mode << ISC00);
|
|
EIMSK |= (1 << INT0);
|
|
break;
|
|
case 3:
|
|
EICRA = (EICRA & ~((1 << ISC10) | (1 << ISC11))) | (mode << ISC10);
|
|
EIMSK |= (1 << INT1);
|
|
break;
|
|
case 4:
|
|
EICRA = (EICRA & ~((1 << ISC20) | (1 << ISC21))) | (mode << ISC20);
|
|
EIMSK |= (1 << INT2);
|
|
break;
|
|
case 5:
|
|
EICRA = (EICRA & ~((1 << ISC30) | (1 << ISC31))) | (mode << ISC30);
|
|
EIMSK |= (1 << INT3);
|
|
break;
|
|
case 0:
|
|
EICRB = (EICRB & ~((1 << ISC40) | (1 << ISC41))) | (mode << ISC40);
|
|
EIMSK |= (1 << INT4);
|
|
break;
|
|
case 1:
|
|
EICRB = (EICRB & ~((1 << ISC50) | (1 << ISC51))) | (mode << ISC50);
|
|
EIMSK |= (1 << INT5);
|
|
break;
|
|
case 6:
|
|
EICRB = (EICRB & ~((1 << ISC60) | (1 << ISC61))) | (mode << ISC60);
|
|
EIMSK |= (1 << INT6);
|
|
break;
|
|
case 7:
|
|
EICRB = (EICRB & ~((1 << ISC70) | (1 << ISC71))) | (mode << ISC70);
|
|
EIMSK |= (1 << INT7);
|
|
break;
|
|
#else
|
|
case 0:
|
|
#if defined(EICRA) && defined(ISC00) && defined(EIMSK)
|
|
EICRA = (EICRA & ~((1 << ISC00) | (1 << ISC01))) | (mode << ISC00);
|
|
EIMSK |= (1 << INT0);
|
|
#elif defined(MCUCR) && defined(ISC00) && defined(GICR)
|
|
MCUCR = (MCUCR & ~((1 << ISC00) | (1 << ISC01))) | (mode << ISC00);
|
|
GICR |= (1 << INT0);
|
|
#elif defined(MCUCR) && defined(ISC00) && defined(GIMSK)
|
|
MCUCR = (MCUCR & ~((1 << ISC00) | (1 << ISC01))) | (mode << ISC00);
|
|
GIMSK |= (1 << INT0);
|
|
#else
|
|
#error attachInterrupt not finished for this CPU (case 0)
|
|
#endif
|
|
break;
|
|
|
|
case 1:
|
|
#if defined(EICRA) && defined(ISC10) && defined(ISC11) && defined(EIMSK)
|
|
EICRA = (EICRA & ~((1 << ISC10) | (1 << ISC11))) | (mode << ISC10);
|
|
EIMSK |= (1 << INT1);
|
|
#elif defined(MCUCR) && defined(ISC10) && defined(ISC11) && defined(GICR)
|
|
MCUCR = (MCUCR & ~((1 << ISC10) | (1 << ISC11))) | (mode << ISC10);
|
|
GICR |= (1 << INT1);
|
|
#elif defined(MCUCR) && defined(ISC10) && defined(GIMSK) && defined(GIMSK)
|
|
MCUCR = (MCUCR & ~((1 << ISC10) | (1 << ISC11))) | (mode << ISC10);
|
|
GIMSK |= (1 << INT1);
|
|
#else
|
|
#warning attachInterrupt may need some more work for this cpu (case 1)
|
|
#endif
|
|
break;
|
|
#endif
|
|
}
|
|
}
|
|
}
|
|
|
|
void detachInterrupt(uint8_t interruptNum) {
|
|
if(interruptNum < EXTERNAL_NUM_INTERRUPTS) {
|
|
// Disable the interrupt. (We can't assume that interruptNum is equal
|
|
// to the number of the EIMSK bit to clear, as this isn't true on the
|
|
// ATmega8. There, INT0 is 6 and INT1 is 7.)
|
|
switch (interruptNum) {
|
|
#if defined(EICRA) && defined(EICRB) && defined(EIMSK)
|
|
case 2:
|
|
EIMSK &= ~(1 << INT0);
|
|
break;
|
|
case 3:
|
|
EIMSK &= ~(1 << INT1);
|
|
break;
|
|
case 4:
|
|
EIMSK &= ~(1 << INT2);
|
|
break;
|
|
case 5:
|
|
EIMSK &= ~(1 << INT3);
|
|
break;
|
|
case 0:
|
|
EIMSK &= ~(1 << INT4);
|
|
break;
|
|
case 1:
|
|
EIMSK &= ~(1 << INT5);
|
|
break;
|
|
case 6:
|
|
EIMSK &= ~(1 << INT6);
|
|
break;
|
|
case 7:
|
|
EIMSK &= ~(1 << INT7);
|
|
break;
|
|
#else
|
|
case 0:
|
|
#if defined(EIMSK) && defined(INT0)
|
|
EIMSK &= ~(1 << INT0);
|
|
#elif defined(GICR) && defined(ISC00)
|
|
GICR &= ~(1 << INT0); // atmega32
|
|
#elif defined(GIMSK) && defined(INT0)
|
|
GIMSK &= ~(1 << INT0);
|
|
#else
|
|
#error detachInterrupt not finished for this cpu
|
|
#endif
|
|
break;
|
|
|
|
case 1:
|
|
#if defined(EIMSK) && defined(INT1)
|
|
EIMSK &= ~(1 << INT1);
|
|
#elif defined(GICR) && defined(INT1)
|
|
GICR &= ~(1 << INT1); // atmega32
|
|
#elif defined(GIMSK) && defined(INT1)
|
|
GIMSK &= ~(1 << INT1);
|
|
#else
|
|
#warning detachInterrupt may need some more work for this cpu (case 1)
|
|
#endif
|
|
break;
|
|
#endif
|
|
}
|
|
|
|
intFunc[interruptNum] = 0;
|
|
}
|
|
}
|
|
|
|
/*
|
|
void attachInterruptTwi(void (*userFunc)(void) ) {
|
|
twiIntFunc = userFunc;
|
|
}
|
|
*/
|
|
|
|
#if defined(EICRA) && defined(EICRB)
|
|
|
|
SIGNAL(INT0_vect) {
|
|
if(intFunc[EXTERNAL_INT_2])
|
|
intFunc[EXTERNAL_INT_2]();
|
|
}
|
|
|
|
SIGNAL(INT1_vect) {
|
|
if(intFunc[EXTERNAL_INT_3])
|
|
intFunc[EXTERNAL_INT_3]();
|
|
}
|
|
|
|
SIGNAL(INT2_vect) {
|
|
if(intFunc[EXTERNAL_INT_4])
|
|
intFunc[EXTERNAL_INT_4]();
|
|
}
|
|
|
|
SIGNAL(INT3_vect) {
|
|
if(intFunc[EXTERNAL_INT_5])
|
|
intFunc[EXTERNAL_INT_5]();
|
|
}
|
|
|
|
SIGNAL(INT4_vect) {
|
|
if(intFunc[EXTERNAL_INT_0])
|
|
intFunc[EXTERNAL_INT_0]();
|
|
}
|
|
|
|
SIGNAL(INT5_vect) {
|
|
if(intFunc[EXTERNAL_INT_1])
|
|
intFunc[EXTERNAL_INT_1]();
|
|
}
|
|
|
|
SIGNAL(INT6_vect) {
|
|
if(intFunc[EXTERNAL_INT_6])
|
|
intFunc[EXTERNAL_INT_6]();
|
|
}
|
|
|
|
SIGNAL(INT7_vect) {
|
|
if(intFunc[EXTERNAL_INT_7])
|
|
intFunc[EXTERNAL_INT_7]();
|
|
}
|
|
|
|
#else
|
|
|
|
SIGNAL(INT0_vect) {
|
|
if(intFunc[EXTERNAL_INT_0])
|
|
intFunc[EXTERNAL_INT_0]();
|
|
}
|
|
|
|
SIGNAL(INT1_vect) {
|
|
if(intFunc[EXTERNAL_INT_1])
|
|
intFunc[EXTERNAL_INT_1]();
|
|
}
|
|
|
|
#endif
|
|
|
|
/*
|
|
SIGNAL(SIG_2WIRE_SERIAL) {
|
|
if(twiIntFunc)
|
|
twiIntFunc();
|
|
}
|
|
*/
|
|
|