291 lines
7.1 KiB
C
291 lines
7.1 KiB
C
/*
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* Copyright (c) 2006-2023, RT-Thread Development Team
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*
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* SPDX-License-Identifier: Apache-2.0
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*
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* Change Logs:
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* Date Author Notes
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* 2018-01-30 armink the first version
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*/
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#include <sys/time.h>
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#include <string.h>
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#include <rtthread.h>
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#include <rtdevice.h>
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#ifdef RT_USING_KTIME
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#include <ktime.h>
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#endif
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#ifdef RT_USING_SOFT_RTC
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/* 2018-01-30 14:44:50 = RTC_TIME_INIT(2018, 1, 30, 14, 44, 50) */
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#define RTC_TIME_INIT(year, month, day, hour, minute, second) \
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{.tm_year = year - 1900, .tm_mon = month - 1, .tm_mday = day, .tm_hour = hour, .tm_min = minute, .tm_sec = second}
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#ifndef SOFT_RTC_TIME_DEFAULT
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#define SOFT_RTC_TIME_DEFAULT RTC_TIME_INIT(2018, 1, 1, 0, 0 ,0)
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#endif
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#ifndef RTC_AUTO_SYNC_FIRST_DELAY
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#define RTC_AUTO_SYNC_FIRST_DELAY 25
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#endif
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#ifndef RTC_AUTO_SYNC_PERIOD
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#define RTC_AUTO_SYNC_PERIOD 3600
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#endif
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static struct rt_work rtc_sync_work;
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static rt_device_t source_device = RT_NULL;
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static struct rt_device soft_rtc_dev;
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static rt_tick_t init_tick;
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static time_t init_time;
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#ifdef RT_USING_KTIME
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static struct timeval init_tv = {0};
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static struct timespec init_ts = {0};
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#endif
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#ifdef RT_USING_ALARM
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static struct rt_rtc_wkalarm wkalarm;
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static struct rt_timer alarm_time;
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static void alarm_timeout(void *param)
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{
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rt_alarm_update(param, 1);
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}
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static void soft_rtc_alarm_update(struct rt_rtc_wkalarm *palarm)
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{
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rt_tick_t next_tick;
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if (palarm->enable)
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{
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next_tick = RT_TICK_PER_SECOND;
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rt_timer_control(&alarm_time, RT_TIMER_CTRL_SET_TIME, &next_tick);
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rt_timer_start(&alarm_time);
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}
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else
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{
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rt_timer_stop(&alarm_time);
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}
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}
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#endif
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static void set_rtc_time(time_t t)
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{
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init_time = t - (rt_tick_get() - init_tick) / RT_TICK_PER_SECOND;
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#ifdef RT_USING_ALARM
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soft_rtc_alarm_update(&wkalarm);
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#endif
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}
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static void _source_device_control(int cmd, void *args)
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{
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if (source_device == RT_NULL)
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return;
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if (rt_device_open(source_device, 0) == RT_EOK)
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{
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rt_device_control(source_device, cmd, args);
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rt_device_close(source_device);
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}
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}
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static rt_err_t soft_rtc_control(rt_device_t dev, int cmd, void *args)
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{
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time_t *t;
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#ifdef RT_USING_KTIME
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struct timeval *tv;
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struct timespec *ts;
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struct timeval _tv;
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struct timespec _ts;
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#endif
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struct tm time_temp;
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RT_ASSERT(dev != RT_NULL);
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rt_memset(&time_temp, 0, sizeof(struct tm));
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switch (cmd)
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{
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case RT_DEVICE_CTRL_RTC_GET_TIME:
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t = (time_t *) args;
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*t = init_time + (rt_tick_get() - init_tick) / RT_TICK_PER_SECOND;
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break;
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case RT_DEVICE_CTRL_RTC_SET_TIME:
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{
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t = (time_t *) args;
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set_rtc_time(*t);
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_source_device_control(RT_DEVICE_CTRL_RTC_SET_TIME, t);
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break;
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}
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#ifdef RT_USING_ALARM
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case RT_DEVICE_CTRL_RTC_GET_ALARM:
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*((struct rt_rtc_wkalarm *)args) = wkalarm;
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break;
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case RT_DEVICE_CTRL_RTC_SET_ALARM:
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wkalarm = *((struct rt_rtc_wkalarm *)args);
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soft_rtc_alarm_update(&wkalarm);
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break;
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#endif
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#ifdef RT_USING_KTIME
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case RT_DEVICE_CTRL_RTC_GET_TIMEVAL:
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tv = (struct timeval *)args;
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rt_ktime_boottime_get_us(&_tv);
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tv->tv_sec = init_time + _tv.tv_sec;
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tv->tv_usec = init_tv.tv_usec + _tv.tv_usec;
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break;
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case RT_DEVICE_CTRL_RTC_SET_TIMEVAL:
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tv = (struct timeval *)args;
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rt_ktime_boottime_get_us(&_tv);
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set_rtc_time(tv->tv_sec);
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init_tv.tv_usec = tv->tv_usec - _tv.tv_usec;
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_source_device_control(RT_DEVICE_CTRL_RTC_SET_TIME, &(tv->tv_sec));
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break;
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case RT_DEVICE_CTRL_RTC_GET_TIMESPEC:
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ts = (struct timespec *)args;
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rt_ktime_boottime_get_ns(&_ts);
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ts->tv_sec = init_time + _ts.tv_sec;
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ts->tv_nsec = init_ts.tv_nsec + _ts.tv_nsec;
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break;
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case RT_DEVICE_CTRL_RTC_SET_TIMESPEC:
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ts = (struct timespec *)args;
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rt_ktime_boottime_get_ns(&_ts);
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set_rtc_time(ts->tv_sec);
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init_ts.tv_nsec = ts->tv_nsec - _ts.tv_nsec;
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_source_device_control(RT_DEVICE_CTRL_RTC_SET_TIME, &(ts->tv_sec));
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break;
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case RT_DEVICE_CTRL_RTC_GET_TIMERES:
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ts = (struct timespec *)args;
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ts->tv_sec = 0;
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ts->tv_nsec = (rt_ktime_cputimer_getres() / RT_KTIME_RESMUL);
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break;
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#endif
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default:
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return -RT_EINVAL;
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}
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return RT_EOK;
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}
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#ifdef RT_USING_DEVICE_OPS
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const static struct rt_device_ops soft_rtc_ops =
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{
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RT_NULL,
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RT_NULL,
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RT_NULL,
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RT_NULL,
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RT_NULL,
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soft_rtc_control
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};
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#endif
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static int rt_soft_rtc_init(void)
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{
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static rt_bool_t init_ok = RT_FALSE;
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struct tm time_new = SOFT_RTC_TIME_DEFAULT;
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if (init_ok)
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{
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return 0;
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}
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/* make sure only one 'rtc' device */
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RT_ASSERT(!rt_device_find("rtc"));
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#ifdef RT_USING_ALARM
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rt_timer_init(&alarm_time,
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"alarm",
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alarm_timeout,
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&soft_rtc_dev,
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0,
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RT_TIMER_FLAG_SOFT_TIMER|RT_TIMER_FLAG_ONE_SHOT);
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#endif
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init_tick = rt_tick_get();
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init_time = timegm(&time_new);
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soft_rtc_dev.type = RT_Device_Class_RTC;
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/* register rtc device */
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#ifdef RT_USING_DEVICE_OPS
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soft_rtc_dev.ops = &soft_rtc_ops;
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#else
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soft_rtc_dev.init = RT_NULL;
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soft_rtc_dev.open = RT_NULL;
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soft_rtc_dev.close = RT_NULL;
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soft_rtc_dev.read = RT_NULL;
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soft_rtc_dev.write = RT_NULL;
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soft_rtc_dev.control = soft_rtc_control;
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#endif
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/* no private */
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soft_rtc_dev.user_data = RT_NULL;
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rt_device_register(&soft_rtc_dev, "rtc", RT_DEVICE_FLAG_RDWR);
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init_ok = RT_TRUE;
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return 0;
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}
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INIT_DEVICE_EXPORT(rt_soft_rtc_init);
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#ifdef RT_USING_SYSTEM_WORKQUEUE
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rt_err_t rt_soft_rtc_sync()
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{
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time_t time = 0;
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if (source_device == RT_NULL)
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{
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rt_kprintf("error: rtc source not found, please set it!!!\n");
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return RT_ENOSYS;
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}
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_source_device_control(RT_DEVICE_CTRL_RTC_GET_TIME, &time);
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set_rtc_time(time);
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return RT_EOK;
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}
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static void rtc_sync_work_func(struct rt_work *work, void *work_data)
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{
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rt_soft_rtc_sync();
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rt_work_submit(work, rt_tick_from_millisecond(RTC_AUTO_SYNC_PERIOD * 1000));
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}
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rt_err_t rt_soft_rtc_set_source(const char *name)
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{
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RT_ASSERT(name != RT_NULL);
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RT_ASSERT(rt_device_find(name)); // make sure source is exist
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source_device = rt_device_find(name);
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rt_work_init(&rtc_sync_work, rtc_sync_work_func, RT_NULL);
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rt_work_submit(&rtc_sync_work, rt_tick_from_millisecond(RTC_AUTO_SYNC_FIRST_DELAY * 1000));
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return RT_EOK;
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}
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#ifdef FINSH_USING_MSH
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#include <finsh.h>
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static void cmd_rtc_sync(int argc, char **argv)
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{
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struct timeval tv = {0};
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struct timezone tz = {0};
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time_t now = (time_t)0;
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rt_soft_rtc_sync();
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gettimeofday(&tv, &tz);
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now = tv.tv_sec;
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/* output current time */
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rt_kprintf("local time: %.*s", 25, ctime(&now));
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rt_kprintf("timestamps: %ld\n", (long)tv.tv_sec);
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}
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MSH_CMD_EXPORT_ALIAS(cmd_rtc_sync, rtc_sync, Update time by real rtc);
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#endif
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#endif /* RT_USING_SYSTEM_WORKQUEUE */
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#endif /* RT_USING_SOFT_RTC */
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