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#include <avr/io.h>
#include <avr/interrupt.h>
#include <util/delay.h>
#include "rfm.h"
#include "serial.h"
#define LED_PIN PC1
#define LOCK_BTN PD6
#define UNLOCK_BTN PD7
#define ADDR 0xAA
#define LOCK 0xB5
#define UNLOCK 0xAE
static inline void lock(void)
{
uint8_t data[1];
data[0] = LOCK;
serial_write_line("sending lock command...");
rfm_sendto(ADDR, data, 1);
serial_write_line("lock command sent");
PORTB |= (1 << LED_PIN);
_delay_ms(500);
PORTB &= ~(1 << LED_PIN);
}
static inline void unlock(void)
{
uint8_t data[1];
data[0] = UNLOCK;
serial_write_line("sending unlock command...");
rfm_sendto(ADDR, data, 1);
serial_write_line("unlock command sent");
PORTB |= (1 << LED_PIN);
_delay_ms(500);
PORTB &= ~(1 << LED_PIN);
}
static inline int is_btn_pressed(unsigned char btn)
{
if (!((PIND >> btn) & 0x01)) {
_delay_us(2000);
return !((PIND >> btn) & 0x01);
}
return 0;
}
static inline void pcint2_init(void)
{
PCICR |= (1 << PCIE2);
PCMSK2 |= ((1 << PCINT22) | (1 << PCINT23));
}
int main(void)
{
DDRD &= ~((1 << LOCK_BTN) | (1 << UNLOCK_BTN));
PORTD |= (1 << LOCK_BTN) | (1 << UNLOCK_BTN);
DDRB |= (1 << LED_PIN);
serial_init();
_delay_ms(3000);
serial_write_line("intializing RF module...");
rfm_init();
serial_write_line("intialized RF module");
pcint2_init();
sei();
for (;;)
;
return 0;
}
ISR(PCINT2_vect)
{
if (is_btn_pressed(LOCK_BTN))
lock();
if (is_btn_pressed(UNLOCK_BTN))
unlock();
}
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