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/*
* Copyright (c) 2006-2021, RT-Thread Development Team
*
* SPDX-License-Identifier: Apache-2.0
*
* Change Logs:
* Date Author Notes
* 2021-04-13 armink the first version
* 2022-05-17 Meco Man improve and beautify
*/
#include <sys/time.h>
#include <rtdevice.h>
static struct rt_device rtc_dev;
#ifdef BSP_USING_ALARM
static struct rt_rtc_wkalarm wkalarm;
static struct rt_timer alarm_time;
static void alarm_timeout(void *param)
{
rt_alarm_update(param, 1);
}
static void soft_rtc_alarm_update(struct rt_rtc_wkalarm *palarm)
{
rt_tick_t next_tick;
if (palarm->enable)
{
next_tick = RT_TICK_PER_SECOND;
rt_timer_control(&alarm_time, RT_TIMER_CTRL_SET_TIME, &next_tick);
rt_timer_start(&alarm_time);
}
else
{
rt_timer_stop(&alarm_time);
}
}
#endif /* BSP_USING_ALARM */
static void get_rtc_timeval(struct timeval *tv)
{
#ifdef _WIN32
struct tm newtime = { 0 };
SYSTEMTIME sys_time;
GetSystemTime(&sys_time); /* get RTC from Windows */
newtime.tm_year = sys_time.wYear - 1900;
newtime.tm_mon = sys_time.wMonth - 1;
newtime.tm_mday = sys_time.wDay;
newtime.tm_hour = sys_time.wHour;
newtime.tm_min = sys_time.wMinute;
newtime.tm_sec = sys_time.wSecond;
tv->tv_sec = timegm(&newtime);
tv->tv_usec = sys_time.wMilliseconds * 1000UL;
#else
tv->tv_sec = 0;
tv->tv_usec = 0;
#endif
}
static rt_err_t pc_rtc_control(rt_device_t dev, int cmd, void *args)
{
RT_ASSERT(dev != RT_NULL);
switch (cmd)
{
case RT_DEVICE_CTRL_RTC_GET_TIME:
{
struct timeval tv;
get_rtc_timeval(&tv);
*(time_t*) args = tv.tv_sec;
break;
}
case RT_DEVICE_CTRL_RTC_GET_TIMEVAL:
{
get_rtc_timeval((struct timeval *) args);
break;
}
#ifdef BSP_USING_ALARM
case RT_DEVICE_CTRL_RTC_SET_TIME:
{
soft_rtc_alarm_update(&wkalarm);
break;
}
case RT_DEVICE_CTRL_RTC_GET_ALARM:
{
*((struct rt_rtc_wkalarm *)args) = wkalarm;
break;
}
case RT_DEVICE_CTRL_RTC_SET_ALARM:
{
wkalarm = *((struct rt_rtc_wkalarm *)args);
soft_rtc_alarm_update(&wkalarm);
break;
}
#endif /* BSP_USING_ALARM */
default:
return -RT_ERROR;
}
return RT_EOK;
}
#ifdef RT_USING_DEVICE_OPS
const static struct rt_device_ops pc_rtc_ops =
{
RT_NULL,
RT_NULL,
RT_NULL,
RT_NULL,
RT_NULL,
pc_rtc_control
};
#endif
int rt_pc_rtc_init(void)
{
/* make sure only one 'rtc' device */
RT_ASSERT(!rt_device_find("rtc"));
#ifdef BSP_USING_ALARM
rt_timer_init(&alarm_time,
"alarm",
alarm_timeout,
&rtc_dev,
0,
RT_TIMER_FLAG_SOFT_TIMER | RT_TIMER_FLAG_ONE_SHOT);
#endif
rtc_dev.type = RT_Device_Class_RTC;
/* register rtc device */
#ifdef RT_USING_DEVICE_OPS
rtc_dev.ops = &pc_rtc_ops;
#else
rtc_dev.init = RT_NULL;
rtc_dev.open = RT_NULL;
rtc_dev.close = RT_NULL;
rtc_dev.read = RT_NULL;
rtc_dev.write = RT_NULL;
rtc_dev.control = pc_rtc_control;
#endif
rtc_dev.user_data = RT_NULL; /* no private */
rt_device_register(&rtc_dev, "rtc", RT_DEVICE_FLAG_RDWR);
return 0;
}
INIT_BOARD_EXPORT(rt_pc_rtc_init);
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