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/*
* Copyright (c) 2006-2024 RT-Thread Development Team
*
* SPDX-License-Identifier: Apache-2.0
*
* Change Logs:
* Date Author Notes
* 2022-07-25 Rbb666 first version
* 2024-11-06 kurisaw add alarm function
*/
#include <rtthread.h>
#include <rtdevice.h>
#include <sys/time.h>
#include "drv_common.h"
#ifdef BSP_USING_RTC
/*#define DRV_DEBUG*/
#define LOG_TAG "drv.rtc"
#include <drv_log.h>
cyhal_rtc_t rtc_obj;
struct rtc_device_object
{
rt_rtc_dev_t rtc_dev;
#ifdef RT_USING_ALARM
struct rt_rtc_wkalarm wkalarm;
#endif
};
static struct rtc_device_object ifx32_rtc_dev;
static int get_day_of_week(int day, int month, int year)
{
int ret;
int k = 0;
int j = 0;
if (month < CY_RTC_MARCH)
{
month += CY_RTC_MONTHS_PER_YEAR;
year--;
}
k = (year % 100);
j = (year / 100);
ret = (day + (13 * (month + 1) / 5) + k + (k / 4) + (j / 4) + (5 * j)) % 7;
ret = ((ret + 6) % 7);
return ret;
}
static rt_err_t set_rtc_time_stamp(time_t time_stamp)
{
struct tm tm = {0};
struct tm new_time = {0};
gmtime_r(&time_stamp, &tm);
if (tm.tm_year < 100)
{
return -RT_ERROR;
}
new_time.tm_sec = tm.tm_sec ;
new_time.tm_min = tm.tm_min ;
new_time.tm_hour = tm.tm_hour;
new_time.tm_mday = tm.tm_mday;
new_time.tm_mon = tm.tm_mon;
new_time.tm_year = tm.tm_year;
new_time.tm_wday = get_day_of_week(tm.tm_mday, tm.tm_mon, tm.tm_year);
if (cyhal_rtc_write(&rtc_obj, &new_time) != RT_EOK)
{
return -RT_ERROR;
}
LOG_D("set rtc time.");
return RT_EOK;
}
static rt_err_t ifx_rtc_get_timeval(struct timeval *tv)
{
struct tm tm_new = {0};
struct tm date_time = {0};
cyhal_rtc_read(&rtc_obj, &date_time);
tm_new.tm_sec = date_time.tm_sec;
tm_new.tm_min = date_time.tm_min;
tm_new.tm_hour = date_time.tm_hour;
tm_new.tm_mday = date_time.tm_mday;
tm_new.tm_mon = date_time.tm_mon;
tm_new.tm_year = date_time.tm_year;
tv->tv_sec = timegm(&tm_new);
return RT_EOK;
}
#ifdef RT_USING_ALARM
void rtc_alarm_callback(void *callback_arg, cyhal_rtc_event_t event);
#endif
static rt_err_t _rtc_init(void)
{
#ifdef BSP_RTC_USING_LSE
Cy_RTC_SelectClockSource(CY_RTC_CLK_SELECT_WCO);
#else
Cy_RTC_SelectClockSource(CY_RTC_CLK_SELECT_ILO);
#endif /* BSP_RTC_USING_LSE */
if (cyhal_rtc_init(&rtc_obj) != RT_EOK)
{
LOG_E("rtc init failed.");
return -RT_ERROR;
}
#ifdef RT_USING_ALARM
cyhal_rtc_register_callback(&rtc_obj, rtc_alarm_callback, NULL);
cyhal_rtc_enable_event(&rtc_obj, CYHAL_RTC_ALARM, 3u, true);
#endif
return RT_EOK;
}
static rt_err_t _rtc_get_secs(time_t *sec)
{
struct timeval tv;
ifx_rtc_get_timeval(&tv);
*(time_t *) sec = tv.tv_sec;
LOG_D("RTC: get rtc_time %d", *sec);
return RT_EOK;
}
static rt_err_t _rtc_set_secs(time_t *sec)
{
rt_err_t result = RT_EOK;
if (set_rtc_time_stamp(*sec))
{
result = -RT_ERROR;
}
LOG_D("RTC: set rtc_time %d", *sec);
return result;
}
#if defined(RT_USING_ALARM)
static rt_err_t _rtc_get_alarm(struct rt_rtc_wkalarm *alarm)
{
#ifdef RT_USING_ALARM
*alarm = ifx32_rtc_dev.wkalarm;
LOG_D("GET_ALARM %d:%d:%d",ifx32_rtc_dev.wkalarm.tm_hour,
ifx32_rtc_dev.wkalarm.tm_min,ifx32_rtc_dev.wkalarm.tm_sec);
return RT_EOK;
#else
return -RT_ERROR;
#endif
}
static rt_err_t _rtc_set_alarm(struct rt_rtc_wkalarm *alarm)
{
#ifdef RT_USING_ALARM
LOG_D("RT_DEVICE_CTRL_RTC_SET_ALARM");
if (alarm != RT_NULL)
{
ifx32_rtc_dev.wkalarm.enable = alarm->enable;
ifx32_rtc_dev.wkalarm.tm_hour = alarm->tm_hour;
ifx32_rtc_dev.wkalarm.tm_min = alarm->tm_min;
ifx32_rtc_dev.wkalarm.tm_sec = alarm->tm_sec;
cyhal_rtc_set_alarm_by_seconds(&rtc_obj, 1);
}
else
{
LOG_E("RT_DEVICE_CTRL_RTC_SET_ALARM error!!");
return -RT_ERROR;
}
LOG_D("SET_ALARM %d:%d:%d",alarm->tm_hour,
alarm->tm_min, alarm->tm_sec);
return RT_EOK;
#else
return -RT_ERROR;
#endif
}
#ifdef RT_USING_ALARM
void rtc_alarm_callback(void *callback_arg, cyhal_rtc_event_t event)
{
RT_UNUSED(callback_arg);
RT_UNUSED(event);
rt_interrupt_enter();
rt_alarm_update(0, 0);
rt_interrupt_leave();
}
#endif
static const struct rt_rtc_ops _rtc_ops =
{
_rtc_init,
_rtc_get_secs,
_rtc_set_secs,
_rtc_get_alarm,
_rtc_set_alarm,
ifx_rtc_get_timeval,
RT_NULL,
};
/**
* @brief RTC initialization function.
*
* @return RT_EOK indicates successful initialization, other value indicates failed;
*/
static int rt_hw_rtc_init(void)
{
rt_err_t result = RT_EOK;
ifx32_rtc_dev.rtc_dev.ops = &_rtc_ops;
if (rt_hw_rtc_register(&(ifx32_rtc_dev.rtc_dev), "rtc", RT_DEVICE_FLAG_RDWR, RT_NULL) != RT_EOK)
{
LOG_E("rtc init failed");
result = -RT_ERROR;
}
else
{
LOG_D("rtc init success");
}
return result;
}
INIT_DEVICE_EXPORT(rt_hw_rtc_init);
#endif
#endif
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