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#include "stdlib.h"
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//#include "switch.h"
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#include <avr/io.h>
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#include <avr/interrupt.h>
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byte switch_mask;
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byte switch_status;
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byte switch_state;
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ISR(PCINT0_vect)
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{
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switch_status = 1;
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switch_state = PINB;
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}
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ISR(PCINT1_vect)
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{
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switch_status = 1;
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switch_state = PINC;
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}
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ISR(PCINT2_vect)
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{
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switch_status = 1;
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switch_state = PIND;
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}
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byte switch_read (byte *sp)
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{
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if (!switch_status)
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return 0;
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switch_status = 0;
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*sp = ~switch_state & switch_mask;
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return 1;
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}
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