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pwm audio

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This commit is contained in:
Jack Humbert 2016-01-11 16:53:33 -05:00
parent 11ce694557
commit 29de37d5c0
13 changed files with 600 additions and 190 deletions
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18
tmk_core/common/avr/timer.c
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@ -29,24 +29,24 @@ volatile uint32_t timer_count = 0;
void timer_init(void)
{
// Timer0 CTC mode
TCCR0A = 0x02;
TCCR1A = 0x02;
#if TIMER_PRESCALER == 1
TCCR0B = 0x01;
TCCR1B = 0x01;
#elif TIMER_PRESCALER == 8
TCCR0B = 0x02;
TCCR1B = 0x02;
#elif TIMER_PRESCALER == 64
TCCR0B = 0x03;
TCCR1B = 0x03;
#elif TIMER_PRESCALER == 256
TCCR0B = 0x04;
TCCR1B = 0x04;
#elif TIMER_PRESCALER == 1024
TCCR0B = 0x05;
TCCR1B = 0x05;
#else
# error "Timer prescaler value is NOT vaild."
#endif
OCR0A = TIMER_RAW_TOP;
TIMSK0 = (1<<OCIE0A);
OCR1A = TIMER_RAW_TOP;
TIMSK1 = (1<<OCIE1A);
}
inline
@ -111,7 +111,7 @@ uint32_t timer_elapsed32(uint32_t last)
}
// excecuted once per 1ms.(excess for just timer count?)
ISR(TIMER0_COMPA_vect)
ISR(TIMER1_COMPA_vect)
{
timer_count++;
}