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35 lines
607 B
35 lines
607 B
/**
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* Time base
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*/
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#include "time_base.h"
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#include "global_state.h"
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#include <stdint.h>
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#include <stdbool.h>
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#include <avr/interrupt.h>
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volatile uint16_t timestamp_100ms = 0;
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volatile uint16_t subsec_counter = 0;
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// 100ms counter
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ISR(TIMER1_COMPA_vect)
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{
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timestamp_100ms++;
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req_update_display = true;
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subsec_counter++;
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if (subsec_counter == 10) {
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subsec_counter = 0;
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second_callback_irq();
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}
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}
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void init_timebase()
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{
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// CTC & presc=256
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TCCR1B = (1 << WGM12) | (1 << CS12);
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TIMSK1 = (1 << OCIE1A); // Enable CTC interrupt
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OCR1A = 6250; // 100ms
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}
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