blob: f39e49335a14d12daeb8fdc5e88d90741e94c3af (
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
|
#ifndef DATETIME_H_
#define DATETIME_H_
#include "util.h"
#include <stdint.h>
/* RTC representation of date and time. */
struct rtc_time {
/* The second. 0-59 */
uint8_t second;
/* The minute. 0-59 */
uint8_t minute;
/* The hour. 0-23 */
uint8_t hour;
/* The day. 0-30 */
uint8_t day;
/* The month. 0-11 */
uint8_t month;
/* The year. 0-99 */
uint8_t year;
/* The day of the week. 0-6 */
uint8_t day_of_week;
};
/* Type representing the time of the day, in 2-second resolution.
* This is a count of double-seconds since midnight.
*/
typedef uint16_t time_of_day_t;
/* Representation of a time range in a day.
* It features a start time and an end time.
*/
struct time_of_day_range {
/* The start time of the range. */
time_of_day_t from;
/* The end time of the range. */
time_of_day_t to;
};
/* Timestamp type with second granularity.
* For easy convertability from struct rtc_time, this type
* stores most of the rtc_time fields in a packed format
* instead of using a count of seconds since some point in time (epoch).
*
* The bit-allocation of the 32-bit timestamp_t type is:
*
* Bit 0 - 5: Seconds
* Value range: 0-59
* Bit 6 - 11: Minutes
* Value range: 0-59
* Bit 12 - 16: Hours
* Value range: 0-23
* Bit 17 - 21: Days
* Value range: 0-30
* Bit 22 - 25: Months
* Value range: 0-11
* Bit 26 - 31: Years
* Value range: 0-63 (= 2000-2063)
*/
typedef uint32_t timestamp_t;
void rtc_time_to_bcd(struct rtc_time *bcd_time,
const struct rtc_time *time);
void rtc_time_from_bcd(struct rtc_time *time,
const struct rtc_time *bcd_time);
time_of_day_t rtc_get_time_of_day(const struct rtc_time *time);
/* Return 1, if time_a is after time_b.
* Return 0 otherwise.
*/
static inline bool time_of_day_after(time_of_day_t time_a,
time_of_day_t time_b)
{
return time_a > time_b;
}
/* Return 1, if time_a is before time_b.
* Return 0 otherwise.
*/
static inline bool time_of_day_before(time_of_day_t time_a,
time_of_day_t time_b)
{
return time_a < time_b;
}
timestamp_t rtc_get_timestamp(const struct rtc_time *time);
#endif /* DATETIME_H_ */
|
