blob: 548c618f937a5deddd1672418182be04b63d282c (
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
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
|
#include <stdint.h>
#include <string.h>
#include <avr/interrupt.h>
#include <avr/wdt.h>
#include <util/delay.h>
#include "nrfm.h"
#include "uart.h"
#include "util.h"
#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
#define LOCK_PIN PC5
#define LOCK_DDR DDRC
#define LOCK_PORT PORTC
#define LOCK_PCIE PCIE1
#define LOCK_PCINT PCINT13
#define LOCK_PCMSK PCMSK1
#define LOCK_PCINTVEC PCINT1_vect
static volatile int rxdr = 0;
static volatile int lock = 0;
static inline void init_rx(void)
{
RX_DDR &= ~(1 << RX_PIN);
RX_PORT |= (1 << RX_PIN);
PCICR |= (1 << RX_PCIE);
RX_PCMSK |= (1 << RX_PCINT);
}
static inline void init_btns(void)
{
LOCK_DDR &= ~(1 << LOCK_PIN);
LOCK_PORT |= (1 << LOCK_PIN);
PCICR |= (1 << LOCK_PCIE);
LOCK_PCMSK |= (1 << LOCK_PCINT);
}
static inline int is_btn_pressed(unsigned char btn)
{
if (!((PINC >> btn) & 0x01)) {
_delay_us(2000);
return !((PINC >> btn) & 0x01);
}
return 0;
}
int main(void)
{
uint8_t n;
char buf[MAXPDLEN + 1];
uint8_t rxaddr[ADDRLEN] = { 194, 178, 82 };
uint8_t txaddr[ADDRLEN] = { 194, 178, 83 };
init_rx();
init_btns();
//wdt_stop();
uart_init();
radio_init(rxaddr);
radio_print_config();
sei();
radio_listen();
for (;;) {
if (rxdr) {
n = radio_recv(buf, MAXPDLEN);
buf[n] = '\0';
rxdr = 0;
if (strncmp(buf, "ACK", 3) == 0) {
uart_write("INFO: ");
uart_write_line(buf);
}
}
if (lock) {
radio_sendto(txaddr, "SYN", 3);
lock = 0;
}
}
return 0;
}
ISR(RX_PCINTVEC)
{
rxdr = 1;
}
ISR(LOCK_PCINTVEC)
{
if (is_btn_pressed(LOCK_PIN))
lock = 1;
}
|
