37 lines
834 B
C
37 lines
834 B
C
/*
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* Copyright 2017 Oleg Borodin <onborodin@gmail.com>
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*/
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#include <stdint.h>
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#include <stdbool.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <avr/pgmspace.h>
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#include <avr/interrupt.h>
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#include <avr/io.h>
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#include <util/delay.h>
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#include <tool.h>
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#include <timer.h>
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void timer_init(void) {
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/* Disable comparators */
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REG_SETDOWN_BIT(TCCR0A, COM0A1);
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REG_SETDOWN_BIT(TCCR0A, COM0A0);
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REG_SETDOWN_BIT(TCCR0A, COM0B1);
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REG_SETDOWN_BIT(TCCR0A, COM0B0);
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/* Set normal mode */
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REG_SETDOWN_BIT(TCCR0A, WGM01);
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REG_SETDOWN_BIT(TCCR0A, WGM00);
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/* Set clock to 1/64 */
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REG_SETDOWN_BIT(TCCR0B, CS02);
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REG_SETUP_BIT(TCCR0B, CS01);
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REG_SETUP_BIT(TCCR0B, CS00);
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/* Enable timer interrupt */
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REG_SETUP_BIT(TIMSK0, TOIE0);
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REG_SETUP(TCNT0, TIMER_INITVAL);
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}
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