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Code Issues Releases Activity

fixed attachInterrupt() on Leonardo

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had to define a separate block for the 32U4 since it looks like a Mega-series board based on a simple register trick.  Only two useable HW interrupts though, compared to the Megas' 8, and numbering differs.
This commit is contained in:
Zach Eveland 2011-12-19 15:40:12 -05:00
parent fd28193336
commit d874bc9832
1 changed files with 34 additions and 4 deletions
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38
hardware/arduino/cores/arduino/WInterrupts.c Executable file → Normal file
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@ -47,7 +47,19 @@ void attachInterrupt(uint8_t interruptNum, void (*userFunc)(void), int mode) {
// Enable the interrupt.
switch (interruptNum) {
#if defined(EICRA) && defined(EICRB) && defined(EIMSK)
#if defined(__AVR_ATmega32U4__)
// I hate doing this, but the register assignment differs between the 1280/2560
// and the 32U4. Since avrlib defines registers PCMSK1 and PCMSK2 that aren't
// even present on the 32U4 this is the only way to distinguish between them.
case 0:
EICRA = (EICRA & ~((1<<ISC00) | (1<<ISC01))) | (mode << ISC00);
EIMSK |= (1<<INT0);
break;
case 1:
EICRA = (EICRA & ~((1<<ISC10) | (1<<ISC11))) | (mode << ISC10);
EIMSK |= (1<<INT1);
break;
#elif defined(EICRA) && defined(EICRB) && defined(EIMSK)
case 2:
EICRA = (EICRA & ~((1 << ISC00) | (1 << ISC01))) | (mode << ISC00);
EIMSK |= (1 << INT0);
@ -80,7 +92,7 @@ void attachInterrupt(uint8_t interruptNum, void (*userFunc)(void), int mode) {
EICRB = (EICRB & ~((1 << ISC70) | (1 << ISC71))) | (mode << ISC70);
EIMSK |= (1 << INT7);
break;
#else
#else
case 0:
#if defined(EICRA) && defined(ISC00) && defined(EIMSK)
EICRA = (EICRA & ~((1 << ISC00) | (1 << ISC01))) | (mode << ISC00);
@ -136,7 +148,14 @@ void detachInterrupt(uint8_t interruptNum) {
// 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)
#if defined(__AVR_ATmega32U4__)
case 0:
EIMSK &= ~(1<<INT0);
break;
case 1:
EIMSK &= ~(1<<INT1);
break;
#elif defined(EICRA) && defined(EICRB) && defined(EIMSK)
case 2:
EIMSK &= ~(1 << INT0);
break;
@ -198,7 +217,18 @@ void attachInterruptTwi(void (*userFunc)(void) ) {
}
*/
#if defined(EICRA) && defined(EICRB)
#if defined(__AVR_ATmega32U4__)
SIGNAL(INT0_vect) {
if(intFunc[EXTERNAL_INT_0])
intFunc[EXTERNAL_INT_0]();
}
SIGNAL(INT1_vect) {
if(intFunc[EXTERNAL_INT_1])
intFunc[EXTERNAL_INT_1]();
}
#elif defined(EICRA) && defined(EICRB)
SIGNAL(INT0_vect) {
if(intFunc[EXTERNAL_INT_2])