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Diffstat (limited to 'tmk_core/common/avr/timer.c')
-rw-r--r--tmk_core/common/avr/timer.c33
1 files changed, 24 insertions, 9 deletions
diff --git a/tmk_core/common/avr/timer.c b/tmk_core/common/avr/timer.c
index 84af44488..369015200 100644
--- a/tmk_core/common/avr/timer.c
+++ b/tmk_core/common/avr/timer.c
@@ -29,25 +29,35 @@ volatile uint32_t timer_count;
void timer_init(void)
{
- // Timer0 CTC mode
- TCCR0A = 0x02;
-
#if TIMER_PRESCALER == 1
- TCCR0B = 0x01;
+ uint8_t prescaler = 0x01;
#elif TIMER_PRESCALER == 8
- TCCR0B = 0x02;
+ uint8_t prescaler = 0x02;
#elif TIMER_PRESCALER == 64
- TCCR0B = 0x03;
+ uint8_t prescaler = 0x03;
#elif TIMER_PRESCALER == 256
- TCCR0B = 0x04;
+ uint8_t prescaler = 0x04;
#elif TIMER_PRESCALER == 1024
- TCCR0B = 0x05;
+ uint8_t prescaler = 0x05;
#else
# error "Timer prescaler value is NOT vaild."
#endif
+#ifndef __AVR_ATmega32A__
+ // Timer0 CTC mode
+ TCCR0A = 0x02;
+
+ TCCR0B = prescaler;
+
OCR0A = TIMER_RAW_TOP;
TIMSK0 = (1<<OCIE0A);
+#else
+ // Timer0 CTC mode
+ TCCR0 = (1 << WGM01) | prescaler;
+
+ OCR0 = TIMER_RAW_TOP;
+ TIMSK = (1 << OCIE0);
+#endif
}
inline
@@ -107,7 +117,12 @@ uint32_t timer_elapsed32(uint32_t last)
}
// excecuted once per 1ms.(excess for just timer count?)
-ISR(TIMER0_COMPA_vect)
+#ifndef __AVR_ATmega32A__
+#define TIMER_INTERRUPT_VECTOR TIMER0_COMPA_vect
+#else
+#define TIMER_INTERRUPT_VECTOR TIMER0_COMP_vect
+#endif
+ISR(TIMER_INTERRUPT_VECTOR, ISR_NOBLOCK)
{
timer_count++;
}