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/*
* Copyright (c) 2006-2023, RT-Thread Development Team
*
* SPDX-License-Identifier: Apache-2.0
*
* Change Logs:
* Date Author Notes
* 2018-03-15 Liuguang the first version.
* 2019-07-19 Magicoe The first version for LPC55S6x
*/
#include <rtthread.h>
#include <rtdevice.h>
#include <sys/time.h>
#include "drv_rtc.h"
#include "fsl_common.h"
#include "fsl_rtc.h"
#ifdef RT_USING_RTC
static rt_err_t lpc_get_timestamp(time_t *timestamp)
{
struct tm tm_new = {0};
rtc_datetime_t rtcDate;
/* Get date time */
RTC_GetDatetime(RTC, &rtcDate);
tm_new.tm_sec = rtcDate.second;
tm_new.tm_min = rtcDate.minute;
tm_new.tm_hour = rtcDate.hour;
tm_new.tm_mday = rtcDate.day;
tm_new.tm_mon = rtcDate.month - 1;
tm_new.tm_year = rtcDate.year - 1900;
timegm(&tm_new);
*timestamp = timegm(&tm_new);
return RT_EOK;
}
static int lpc_set_timestamp(time_t timestamp)
{
struct tm now;
rtc_datetime_t rtcDate;
gmtime_r(×tamp, &now);
rtcDate.second = now.tm_sec ;
rtcDate.minute = now.tm_min ;
rtcDate.hour = now.tm_hour;
rtcDate.day = now.tm_mday;
rtcDate.month = now.tm_mon + 1;
rtcDate.year = now.tm_year + 1900;
/* RTC time counter has to be stopped before setting the date & time in the TSR register */
RTC_StopTimer(RTC);
/* Set RTC time to default */
RTC_SetDatetime(RTC, &rtcDate);
/* Start the RTC time counter */
RTC_StartTimer(RTC);
return RT_EOK;
}
static rt_err_t lpc_rtc_init(rt_device_t dev)
{
/* Init RTC */
RTC_Init(RTC);
/* Start the RTC time counter */
RTC_StartTimer(RTC);
return RT_EOK;
}
static rt_err_t lpc_rtc_open(rt_device_t dev, rt_uint16_t oflag)
{
return RT_EOK;
}
static rt_err_t lpc_rtc_close(rt_device_t dev)
{
return RT_EOK;
}
static rt_ssize_t lpc_rtc_read(rt_device_t dev, rt_off_t pos, void* buffer, rt_size_t size)
{
return 0;
}
static rt_ssize_t lpc_rtc_write(rt_device_t dev, rt_off_t pos, const void* buffer, rt_size_t size)
{
return 0;
}
static rt_err_t lpc_rtc_control(rt_device_t dev, int cmd, void *args)
{
RT_ASSERT(dev != RT_NULL);
switch(cmd)
{
case RT_DEVICE_CTRL_RTC_GET_TIME:
{
lpc_get_timestamp(args);
}
break;
case RT_DEVICE_CTRL_RTC_SET_TIME:
{
lpc_set_timestamp(*(time_t *)args);
}
break;
default:
return RT_EINVAL;
}
return RT_EOK;
}
static struct rt_device device =
{
.type = RT_Device_Class_RTC,
.init = lpc_rtc_init,
.open = lpc_rtc_open,
.close = lpc_rtc_close,
.read = lpc_rtc_read,
.write = lpc_rtc_write,
.control = lpc_rtc_control,
};
int rt_hw_rtc_init(void)
{
rt_err_t ret = RT_EOK;
ret = rt_device_register(&device, "rtc", RT_DEVICE_FLAG_RDWR);
if(ret != RT_EOK)
{
return ret;
}
rt_device_open(&device, RT_DEVICE_OFLAG_RDWR);
return RT_EOK;
}
INIT_DEVICE_EXPORT(rt_hw_rtc_init);
#endif /*RT_USING_RTC */
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