mirror of
https://github.com/binary-kitchen/doorlockd
synced 2024-12-22 18:34:25 +01:00
144 lines
2.5 KiB
C
144 lines
2.5 KiB
C
/* 2015, Ralf Ramsauer
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* ralf@binary-kitchen.de
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*/
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#include <avr/io.h>
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#include <avr/interrupt.h>
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#include <util/delay.h>
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#include <avr/sleep.h>
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#include <string.h>
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#define GREEN_ON (PORTB &= ~(1<<PB1))
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#define GREEN_OFF (PORTB |= (1<<PB1))
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#define RED_ON (PORTB &= ~(1<<PB0))
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#define RED_OFF (PORTB |= (1<<PB0))
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#define DOORLIGHT_ON (PORTD |= (1<<PD6))
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#define DOORLIGHT_OFF (PORTD &= ~(1<<PD6))
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#define OPEN_BOLZEN (PORTD &= ~(1<<PD4))
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#define CLOSE_BOLZEN (PORTD |= (1<<PD4))
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#define OPEN_SCHNAPPER (PORTD |= (1<<PD5))
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#define CLOSE_SCHNAPPER (PORTD &= ~(1<<PD5))
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#define IS_RESCUE (!(PIND & (1<<PD3)))
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#define IS_SWITCH (!(PIND & (1<<PD2)))
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static uint8_t open = 0;
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static uint8_t klacker = 0;
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void open_door()
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{
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RED_OFF;
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GREEN_ON;
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OPEN_BOLZEN;
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DOORLIGHT_ON;
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}
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void close_door()
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{
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RED_ON;
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GREEN_OFF;
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DOORLIGHT_OFF;
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CLOSE_SCHNAPPER;
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CLOSE_BOLZEN;
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}
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void schnapper(unsigned int i)
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{
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OPEN_SCHNAPPER;
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while (i--) {
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_delay_ms(1000);
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}
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CLOSE_SCHNAPPER;
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_delay_ms(100);
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}
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ISR(USI_OVERFLOW_vect)
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{
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// Clear interrupt flag
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USISR |= (1<<USIOIF);
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// Reset counter
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TCNT1 = 0;
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open = 1;
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uint8_t in = USIDR;
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// Depending on the clock, a klacker either can be 10101010 or 01010101
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if (in == 0x55 || in == 0xAA)
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{
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klacker = 1;
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}
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}
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ISR(TIMER1_OVF_vect)
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{
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open = 0;
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}
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int main(void) {
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// disable all interrupts
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cli();
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// PD4-6 as Output
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DDRD = (1<<PD5)|(1<<PD4)|(1<<PD6);
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// PD2,3 Pullup
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PORTD |= (1<<PD2)|(1<<PD3);
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// PB0-1 as Output
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DDRB = (1<<PB0)|(1<<PB1);
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// PB5,7 Pullup
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PORTB |= (1<<PB7)|(1<<PB5);
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// first action: close door
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close_door();
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// Configure USI
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USICR = (1<<USICS1) | (1<<USIOIE) | (1<<USIWM0);
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// Configure Timer
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TIMSK |= (1<<TOIE1);
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TIFR |= (1<<TOV1);
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TCNT1 = 0;
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TCCR1A = 0;
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TCCR1B = (1<<CS01)|(1<<CS00);
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// wait a bit to settle down
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_delay_ms(1000);
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// enable interrupts
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sei();
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for(;;) {
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if (open == 0) {
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close_door();
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} else if (open == 1) {
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open_door();
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if (klacker == 1)
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{
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schnapper(3);
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klacker = 0;
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}
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}
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if (IS_RESCUE) {
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cli();
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open_door();
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schnapper(3);
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sei();
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} else if (IS_SWITCH && open == 0) {
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_delay_ms(300);
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if(IS_SWITCH && open == 0) {
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cli();
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open_door();
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schnapper(5);
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sei();
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}
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}
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_delay_ms(50);
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}
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return 0;
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}
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