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
|
#include <avr/io.h>
#include <avr/interrupt.h>
#include "rtc.h"
#include "bits.h"
volatile char rtc_ok = 0;
volatile int year;
volatile int month;
volatile int mday;
volatile int hour;
volatile int min;
volatile int sec;
DWORD get_fattime(void)
{
if (!rtc_ok) return 0;
return ((DWORD)(year - 1980) << 25)
| ((DWORD)month << 21)
| ((DWORD)mday << 16)
| ((DWORD)hour << 11)
| ((DWORD)min << 5)
| ((DWORD)sec >> 1);
}
void set_time(int s_year, int s_month, int s_mday, int s_hour, int s_min, int s_sec)
{
year = s_year;
month = s_month;
mday = s_mday;
hour = s_hour;
min = s_min;
sec = s_sec;
rtc_ok = 1;
}
void time_init()
{
OCR2 = 0; // Запускаем часы
set_bit(ASSR, AS0);
set_bit2(TCCR0, CS22, CS20); // x128, каждую секунду
set_bit(TIMSK, TOIE0);
}
int days(int month, int year)
{
switch (month)
{
case 1:
case 3:
case 5:
case 7:
case 8:
case 10:
case 12:
return 31;
case 4:
case 6:
case 9:
case 11:
return 30;
case 2:
return (year % 4 == 0) ? 29 : 28;
}
return 0;
}
ISR(TIMER0_OVF_vect)
{
sec++;
if (sec > 59)
{
min++;
sec = 0;
}
if (min > 59)
{
hour++;
min = 0;
}
if (hour > 23)
{
mday++;
hour = 0;
}
if (mday > days(month, year))
{
month++;
mday = 1;
}
if (month > 12)
{
year++;
month = 1;
}
}
|
