25 lines
797 B
C
25 lines
797 B
C
#include <avr/io.h>
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#include "button.h"
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void button_init() {
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// PB2, PB3, PB4, PB5, PB6, PC0, PC1, PC4: input, no pullup (button0..7)
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PORTB &= ~(_BV(PB2) | _BV(PB3) | _BV(PB4) | _BV(PB5) | _BV(PB6));
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DDRB &= ~(_BV(PB2) | _BV(PB3) | _BV(PB4) | _BV(PB5) | _BV(PB6));
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PORTC &= ~(_BV(PC0) | _BV(PC1) | _BV(PC4));
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DDRC &= ~(_BV(PC0) | _BV(PC1) | _BV(PC4));
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}
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uint8_t button_get() {
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uint8_t pinb = PINB;
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uint8_t pinc = PINC;
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uint8_t buttons = 0;
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if (pinb & _BV(PB2)) buttons |= _BV(0);
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if (pinb & _BV(PB3)) buttons |= _BV(1);
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if (pinb & _BV(PB4)) buttons |= _BV(2);
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if (pinb & _BV(PB5)) buttons |= _BV(3);
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if (pinb & _BV(PB6)) buttons |= _BV(4);
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if (pinc & _BV(PC0)) buttons |= _BV(5);
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if (pinc & _BV(PC1)) buttons |= _BV(6);
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if (pinc & _BV(PC4)) buttons |= _BV(7);
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return buttons;
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}
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