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38 lines
576 B
38 lines
576 B
8 years ago
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#include <stdint.h>
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#include <stdlib.h>
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#include <stdio.h>
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#include <LUFA/Common/Common.h>
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#include "clock.h"
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//Counted time
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volatile clock_time_t clock_datetime = 0;
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//Overflow interrupt
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ISR(TIMER1_COMPA_vect, ISR_BLOCK)
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{
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clock_datetime += 1;
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}
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//Initialise the clock
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void clock_init()
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{
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OCR1A = (((F_CPU / 1024) / 100) - 1);
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TCCR1B = ((1 << WGM12) | (1 << CS12) | (1 << CS10));
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TIMSK1 = (1 << OCIE1A);
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}
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//Return time
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clock_time_t clock_time()
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{
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clock_time_t time;
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GlobalInterruptDisable();
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time = clock_datetime;
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GlobalInterruptEnable();
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return time;
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}
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