blob: 5ba867fe8f901d4eb742adef577635bab78e675a (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
|
#include <stdint.h>
#include <avr/io.h>
#include <avr/interrupt.h>
#include <util/delay.h>
#include "cmd.h"
#include "serial.h"
#define PWM_MIN 1200
#define PWM_MID 3000
#define PWM_MAX 5000
#define SERVO_PIN PB1
#define LOCK_BTN PD6
#define ULOCK_BTN PD7
static inline void servo_init(void)
{
DDRB |= 1 << SERVO_PIN;
TCCR1A |= (1 << WGM11) | (1 << COM1A1);
TCCR1B |= (1 << WGM12) | (1 << WGM13) | (1 << CS11);
ICR1 = 40000;
DDRD &= ~((1 << LOCK_BTN) | (1 << ULOCK_BTN));
PORTD |= (1 << LOCK_BTN) | (1 << ULOCK_BTN);
}
static inline void pcint2_init(void)
{
PCICR |= (1 << PCIE2);
PCMSK2 |= ((1 << PCINT22) | (1 << PCINT23));
}
static inline uint8_t is_btn_pressed(uint8_t btn)
{
return !((PIND >> btn) & 0x01);
}
int main(void)
{
char *ulock_cmd;
servo_init();
pcint2_init();
serial_init();
sei();
for(;;) {
ulock_cmd = get_encrypted_ulock_cmd();
if (is_ulock_cmd(ulock_cmd))
serial_write_line("unlock door");
else
serial_write_line("do not unlock door");
_delay_ms(1000);
}
return 0;
}
ISR(PCINT2_vect)
{
if (is_btn_pressed(LOCK_BTN))
OCR1A = PWM_MID;
if (is_btn_pressed(ULOCK_BTN))
OCR1A = PWM_MIN;
}
|
