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Banish some more magic numbers (#6662)

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This commit is contained in:
fauxpark 2019-09-08 01:12:46 +10:00 • committed by Drashna Jaelre
parent c21281c593
commit 91bd2117df
2 changed files with 13 additions and 19 deletions
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21
tmk_core/common/avr/timer.c
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@ -32,33 +32,32 @@ volatile uint32_t timer_count;
*/
void timer_init(void) {
#if TIMER_PRESCALER == 1
uint8_t prescaler = 0x01;
uint8_t prescaler = _BV(CS00);
#elif TIMER_PRESCALER == 8
uint8_t prescaler = 0x02;
uint8_t prescaler = _BV(CS01);
#elif TIMER_PRESCALER == 64
uint8_t prescaler = 0x03;
uint8_t prescaler = _BV(CS00) | _BV(CS01);
#elif TIMER_PRESCALER == 256
uint8_t prescaler = 0x04;
uint8_t prescaler = _BV(CS02);
#elif TIMER_PRESCALER == 1024
uint8_t prescaler = 0x05;
uint8_t prescaler = _BV(CS00) | _BV(CS02);
#else
# error "Timer prescaler value is NOT vaild."
# error "Timer prescaler value is not valid"
#endif
#ifndef __AVR_ATmega32A__
// Timer0 CTC mode
TCCR0A = 0x02;
TCCR0A = _BV(WGM01);
TCCR0B = prescaler;
OCR0A = TIMER_RAW_TOP;
TIMSK0 = (1 << OCIE0A);
TIMSK0 = _BV(OCIE0A);
#else
// Timer0 CTC mode
TCCR0 = (1 << WGM01) | prescaler;
TCCR0 = _BV(WGM01) | prescaler;
OCR0 = TIMER_RAW_TOP;
TIMSK = (1 << OCIE0);
TIMSK = _BV(OCIE0);
#endif
}