32 lines
520 B
C
32 lines
520 B
C
#include "button.h"
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#include "main.h"
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#include "led.h"
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#include <avr/interrupt.h>
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void button_init()
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{
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led_init();
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// enable pullup on button pin
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BUTTON_DDR &= ~(1<<BUTTON_PIN);
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BUTTON_PORT |= (1<<BUTTON_PIN);
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// activate pin change interrupt
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// PCINT9
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PCMSK1 |= (1<<PCINT9);
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GIMSK |= (1<<PCIE1); // enable PCINT1
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}
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button_state_t button_is_pressed()
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{
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return (BUTTON_REG&(1<<BUTTON_PIN)) > 0;
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}
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ISR(PCINT1_vect) {
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if(!(BUTTON_REG&(1<<BUTTON_PIN))) {
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app.button = !app.button;
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led_toggle();
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}
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}
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