razzor/twiboot
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fix mega8 interrupt vector switch

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This commit is contained in:
Olaf Rempel 2010-10-17 18:23:41 +02:00
parent a857b3906e
commit b16b660495
1 changed files with 11 additions and 5 deletions
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16
main.c
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@ -405,14 +405,17 @@ int main(void)
PORTB = LED_GN;
/* move interrupt-vectors to bootloader */
MCUCR = (1<<IVCE);
MCUCR = (1<<IVSEL);
/* timer0: running with F_CPU/1024, OVF interrupt */
#if defined (__AVR_ATmega8__)
GICR = (1<<IVCE);
GICR = (1<<IVSEL);
TCCR0 = (1<<CS02) | (1<<CS00);
TIMSK = (1<<TOIE0);
#elif defined (__AVR_ATmega88__) || defined (__AVR_ATmega168__)
MCUCR = (1<<IVCE);
MCUCR = (1<<IVSEL);
TCCR0B = (1<<CS02) | (1<<CS00);
TIMSK0 = (1<<TOIE0);
#endif
@ -429,17 +432,20 @@ int main(void)
TWCR = 0x00;
/* disable timer0 */
/* move interrupt vectors back to application */
#if defined (__AVR_ATmega8__)
TCCR0 = 0x00;
TIMSK = 0x00;
GICR = (1<<IVCE);
GICR = (0<<IVSEL);
#elif defined (__AVR_ATmega88__) || defined (__AVR_ATmega168__)
TIMSK0 = 0x00;
TCCR0B = 0x00;
#endif
/* move interrupt vectors back to application */
MCUCR = (1<<IVCE);
MCUCR = (0<<IVSEL);
#endif
PORTB = 0x00;