1*10465441SEvalZero /*
2*10465441SEvalZero * Copyright (c) 2006-2018, RT-Thread Development Team
3*10465441SEvalZero *
4*10465441SEvalZero * SPDX-License-Identifier: Apache-2.0
5*10465441SEvalZero *
6*10465441SEvalZero * Change Logs:
7*10465441SEvalZero * Date Author Notes
8*10465441SEvalZero * 2018-01-30 armink the first version
9*10465441SEvalZero */
10*10465441SEvalZero
11*10465441SEvalZero #include <time.h>
12*10465441SEvalZero #include <string.h>
13*10465441SEvalZero #include <rtthread.h>
14*10465441SEvalZero
15*10465441SEvalZero #include <drivers/rtc.h>
16*10465441SEvalZero
17*10465441SEvalZero #ifdef RT_USING_SOFT_RTC
18*10465441SEvalZero
19*10465441SEvalZero /* 2018-01-30 14:44:50 = RTC_TIME_INIT(2018, 1, 30, 14, 44, 50) */
20*10465441SEvalZero #define RTC_TIME_INIT(year, month, day, hour, minute, second) \
21*10465441SEvalZero {.tm_year = year - 1900, .tm_mon = month - 1, .tm_mday = day, .tm_hour = hour, .tm_min = minute, .tm_sec = second}
22*10465441SEvalZero
23*10465441SEvalZero #ifndef SOFT_RTC_TIME_DEFAULT
24*10465441SEvalZero #define SOFT_RTC_TIME_DEFAULT RTC_TIME_INIT(2018, 1, 1, 0, 0 ,0)
25*10465441SEvalZero #endif
26*10465441SEvalZero
27*10465441SEvalZero static struct rt_device soft_rtc_dev;
28*10465441SEvalZero static rt_tick_t init_tick;
29*10465441SEvalZero static time_t init_time;
30*10465441SEvalZero
soft_rtc_control(rt_device_t dev,int cmd,void * args)31*10465441SEvalZero static rt_err_t soft_rtc_control(rt_device_t dev, int cmd, void *args)
32*10465441SEvalZero {
33*10465441SEvalZero time_t *time;
34*10465441SEvalZero struct tm time_temp;
35*10465441SEvalZero
36*10465441SEvalZero RT_ASSERT(dev != RT_NULL);
37*10465441SEvalZero memset(&time_temp, 0, sizeof(struct tm));
38*10465441SEvalZero
39*10465441SEvalZero switch (cmd)
40*10465441SEvalZero {
41*10465441SEvalZero case RT_DEVICE_CTRL_RTC_GET_TIME:
42*10465441SEvalZero time = (time_t *) args;
43*10465441SEvalZero *time = init_time + (rt_tick_get() - init_tick) / RT_TICK_PER_SECOND;
44*10465441SEvalZero break;
45*10465441SEvalZero
46*10465441SEvalZero case RT_DEVICE_CTRL_RTC_SET_TIME:
47*10465441SEvalZero {
48*10465441SEvalZero time = (time_t *) args;
49*10465441SEvalZero init_time = *time - (rt_tick_get() - init_tick) / RT_TICK_PER_SECOND;
50*10465441SEvalZero break;
51*10465441SEvalZero }
52*10465441SEvalZero }
53*10465441SEvalZero
54*10465441SEvalZero return RT_EOK;
55*10465441SEvalZero }
56*10465441SEvalZero
57*10465441SEvalZero #ifdef RT_USING_DEVICE_OPS
58*10465441SEvalZero const static struct rt_device_ops soft_rtc_ops =
59*10465441SEvalZero {
60*10465441SEvalZero RT_NULL,
61*10465441SEvalZero RT_NULL,
62*10465441SEvalZero RT_NULL,
63*10465441SEvalZero RT_NULL,
64*10465441SEvalZero RT_NULL,
65*10465441SEvalZero soft_rtc_control
66*10465441SEvalZero };
67*10465441SEvalZero #endif
68*10465441SEvalZero
rt_soft_rtc_init(void)69*10465441SEvalZero int rt_soft_rtc_init(void)
70*10465441SEvalZero {
71*10465441SEvalZero static rt_bool_t init_ok = RT_FALSE;
72*10465441SEvalZero struct tm time_new = SOFT_RTC_TIME_DEFAULT;
73*10465441SEvalZero
74*10465441SEvalZero if (init_ok)
75*10465441SEvalZero {
76*10465441SEvalZero return 0;
77*10465441SEvalZero }
78*10465441SEvalZero /* make sure only one 'rtc' device */
79*10465441SEvalZero RT_ASSERT(!rt_device_find("rtc"));
80*10465441SEvalZero
81*10465441SEvalZero init_tick = rt_tick_get();
82*10465441SEvalZero init_time = mktime(&time_new);
83*10465441SEvalZero
84*10465441SEvalZero soft_rtc_dev.type = RT_Device_Class_RTC;
85*10465441SEvalZero
86*10465441SEvalZero /* register rtc device */
87*10465441SEvalZero #ifdef RT_USING_DEVICE_OPS
88*10465441SEvalZero soft_rtc_dev.ops = &soft_rtc_ops;
89*10465441SEvalZero #else
90*10465441SEvalZero soft_rtc_dev.init = RT_NULL;
91*10465441SEvalZero soft_rtc_dev.open = RT_NULL;
92*10465441SEvalZero soft_rtc_dev.close = RT_NULL;
93*10465441SEvalZero soft_rtc_dev.read = RT_NULL;
94*10465441SEvalZero soft_rtc_dev.write = RT_NULL;
95*10465441SEvalZero soft_rtc_dev.control = soft_rtc_control;
96*10465441SEvalZero #endif
97*10465441SEvalZero
98*10465441SEvalZero /* no private */
99*10465441SEvalZero soft_rtc_dev.user_data = RT_NULL;
100*10465441SEvalZero
101*10465441SEvalZero rt_device_register(&soft_rtc_dev, "rtc", RT_DEVICE_FLAG_RDWR);
102*10465441SEvalZero
103*10465441SEvalZero init_ok = RT_TRUE;
104*10465441SEvalZero
105*10465441SEvalZero return 0;
106*10465441SEvalZero }
107*10465441SEvalZero INIT_DEVICE_EXPORT(rt_soft_rtc_init);
108*10465441SEvalZero
109*10465441SEvalZero #endif /* RT_USING_SOFT_RTC */
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