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
106
107
108
109
|
/*
* Copyright (c) 2006-2021, RT-Thread Development Team
*
* SPDX-License-Identifier: Apache-2.0
*
* Change Logs:
* Date Author Notes
* 2018-01-30 armink the first version
*/
#include <time.h>
#include <string.h>
#include <rtthread.h>
#include <drivers/rtc.h>
#ifdef RT_USING_SOFT_RTC
/* 2018-01-30 14:44:50 = RTC_TIME_INIT(2018, 1, 30, 14, 44, 50) */
#define RTC_TIME_INIT(year, month, day, hour, minute, second) \
{.tm_year = year - 1900, .tm_mon = month - 1, .tm_mday = day, .tm_hour = hour, .tm_min = minute, .tm_sec = second}
#ifndef SOFT_RTC_TIME_DEFAULT
#define SOFT_RTC_TIME_DEFAULT RTC_TIME_INIT(2018, 1, 1, 0, 0 ,0)
#endif
static struct rt_device soft_rtc_dev;
static rt_tick_t init_tick;
static time_t init_time;
static rt_err_t soft_rtc_control(rt_device_t dev, int cmd, void *args)
{
time_t *time;
struct tm time_temp;
RT_ASSERT(dev != RT_NULL);
memset(&time_temp, 0, sizeof(struct tm));
switch (cmd)
{
case RT_DEVICE_CTRL_RTC_GET_TIME:
time = (time_t *) args;
*time = init_time + (rt_tick_get() - init_tick) / RT_TICK_PER_SECOND;
break;
case RT_DEVICE_CTRL_RTC_SET_TIME:
{
time = (time_t *) args;
init_time = *time - (rt_tick_get() - init_tick) / RT_TICK_PER_SECOND;
break;
}
}
return RT_EOK;
}
#ifdef RT_USING_DEVICE_OPS
const static struct rt_device_ops soft_rtc_ops =
{
RT_NULL,
RT_NULL,
RT_NULL,
RT_NULL,
RT_NULL,
soft_rtc_control
};
#endif
int rt_soft_rtc_init(void)
{
static rt_bool_t init_ok = RT_FALSE;
struct tm time_new = SOFT_RTC_TIME_DEFAULT;
if (init_ok)
{
return 0;
}
/* make sure only one 'rtc' device */
RT_ASSERT(!rt_device_find("rtc"));
init_tick = rt_tick_get();
init_time = mktime(&time_new);
soft_rtc_dev.type = RT_Device_Class_RTC;
/* register rtc device */
#ifdef RT_USING_DEVICE_OPS
soft_rtc_dev.ops = &soft_rtc_ops;
#else
soft_rtc_dev.init = RT_NULL;
soft_rtc_dev.open = RT_NULL;
soft_rtc_dev.close = RT_NULL;
soft_rtc_dev.read = RT_NULL;
soft_rtc_dev.write = RT_NULL;
soft_rtc_dev.control = soft_rtc_control;
#endif
/* no private */
soft_rtc_dev.user_data = RT_NULL;
rt_device_register(&soft_rtc_dev, "rtc", RT_DEVICE_FLAG_RDWR);
init_ok = RT_TRUE;
return 0;
}
INIT_DEVICE_EXPORT(rt_soft_rtc_init);
#endif /* RT_USING_SOFT_RTC */
|
