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
74
75
76
77
78
79
80
81
82
|
/* Lock front, connected to the fingerprint scanner */
#include <stdint.h>
#include <stdlib.h>
#include <avr/interrupt.h>
#include <avr/wdt.h>
#include <util/delay.h>
#include "nrfm.h"
#include "uart.h"
#include "util.h"
#define BTN_PIN PINB
#define BTN_PCIE PCIE0
#define BTN_PCINTVEC PCINT0_vect
#define LOCK_BTN PB0
#define LOCK_BTN_PCINT PCINT0
#define RX_PIN PD7
#define RX_DDR DDRD
#define RX_PORT PORTD
#define RX_PCIE PCIE2
#define RX_PCINT PCINT23
#define RX_PCMSK PCMSK2
#define RX_PCINTVEC PCINT2_vect
uint8_t syncing = 0;
static volatile uint8_t rxdr = 0;
static volatile uint8_t btn_press = 0;
int main(void)
{
uint8_t n, rc;
uint8_t rxaddr[ADDRLEN] = { 194, 178, 82 };
uint8_t txaddr[ADDRLEN] = { 194, 178, 83 };
char buf[WDLEN + 1], key[WDLEN + 1];
RX_DDR &= ~(1 << RX_PIN);
RX_PORT |= (1 << RX_PIN);
PCICR |= (1 << RX_PCIE);
RX_PCMSK |= (1 << RX_PCINT);
uart_init();
btn_init();
radio_init(rxaddr);
radio_print_config();
sei();
for (;;) {
if (rxdr) {
rxdr = 0;
if (syncing) {
n = radio_recv(buf, WDLEN);
buf[n] = '\0';
xor(KEY, buf, key, WDLEN);
}
}
if (btn_press) {
syncing = 1;
btn_press = 0;
xor(KEY, SYN, buf, WDLEN);
do {
rc = radio_sendto(txaddr, buf, WDLEN);
} while (!rc);
}
}
return 0;
}
ISR(RX_PCINTVEC)
{
rxdr = 1;
}
ISR(BTN_PCINTVEC)
{
btn_press = 1;
}
|
