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/*
* Copyright (c) 2006-2018, Synwit Technology Co.,Ltd.
*
* SPDX-License-Identifier: Apache-2.0
*
* Change Logs:
* Date Author Notes
* 2018-12-10 Zohar_Lee first version
*/
#include <rthw.h>
#include <rtthread.h>
#include <rtdevice.h>
#include <board.h>
#include <string.h>
#include <time.h>
/**
* This function will get the weed day from a date.
*
* @param year the year of time
* @param month the month of time
* @param date the date of time
*
* @return the week day 0 ~ 6 : sun ~ sat
*
* @note No
*/
static uint32_t calcWeekDay(uint32_t year, uint32_t month, uint32_t date)
{
uint32_t i, cnt = 0;
const uint32_t daysOfMonth[13] = {0, 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31};
for (i = 1; i < month; i++)
cnt += daysOfMonth[i];
cnt += date;
if ((year % 4 == 0) && ((year % 100 != 0) || (year % 400 == 0)) &&
(month >= 3))
cnt += 1;
cnt += (year - 1901) * 365;
for (i = 1901; i < year; i++)
{
if ((i % 4 == 0) && ((i % 100 != 0) || (i % 400 == 0)))
cnt += 1;
}
return (cnt + 1) % 7;
}
static void RTC_SetDateTime(RTC_TypeDef *RTCx, RTC_DateTime *dateTime)
{
RTC_Stop(RTCx);
while (RTCx->CFGABLE == 0);
RTCx->MINSEC = (dateTime->Second << RTC_MINSEC_SEC_Pos) |
(dateTime->Minute << RTC_MINSEC_MIN_Pos);
RTCx->DATHUR = (dateTime->Hour << RTC_DATHUR_HOUR_Pos) |
((dateTime->Date - 1) << RTC_DATHUR_DATE_Pos);
RTCx->MONDAY = (calcWeekDay(dateTime->Year, dateTime->Month, dateTime->Date)
<< RTC_MONDAY_DAY_Pos) |
((dateTime->Month - 1) << RTC_MONDAY_MON_Pos);
RTCx->YEAR = dateTime->Year - 1901;
RTCx->LOAD = 1 << RTC_LOAD_TIME_Pos;
RTC_Start(RTC);
}
static rt_err_t swm320_rtc_control(rt_device_t dev, int cmd, void *args)
{
rt_err_t result = RT_EOK;
struct tm time_temp;
struct tm *pNow;
RTC_DateTime dateTime;
switch (cmd)
{
case RT_DEVICE_CTRL_RTC_GET_TIME:
RTC_GetDateTime(RTC, &dateTime);
time_temp.tm_sec = dateTime.Second;
time_temp.tm_min = dateTime.Minute;
time_temp.tm_hour = dateTime.Hour;
time_temp.tm_mday = dateTime.Date;
time_temp.tm_mon = dateTime.Month - 1;
time_temp.tm_year = dateTime.Year - 1900;
*((time_t *)args) = mktime(&time_temp);
break;
case RT_DEVICE_CTRL_RTC_SET_TIME:
rt_enter_critical();
/* converts calendar time time into local time. */
pNow = localtime((const time_t *)args);
/* copy the statically located variable */
memcpy(&time_temp, pNow, sizeof(struct tm));
/* unlock scheduler. */
rt_exit_critical();
dateTime.Hour = time_temp.tm_hour;
dateTime.Minute = time_temp.tm_min;
dateTime.Second = time_temp.tm_sec;
dateTime.Year = time_temp.tm_year + 1900;
dateTime.Month = time_temp.tm_mon + 1;
dateTime.Date = time_temp.tm_mday;
RTC_SetDateTime(RTC, &dateTime);
break;
case RT_DEVICE_CTRL_RTC_GET_ALARM:
break;
case RT_DEVICE_CTRL_RTC_SET_ALARM:
break;
default:
break;
}
return result;
}
#ifdef RT_USING_DEVICE_OPS
const static struct rt_device_ops swm320_rtc_ops =
{
RT_NULL,
RT_NULL,
RT_NULL,
RT_NULL,
RT_NULL,
swm320_rtc_control
};
#endif
int rt_hw_rtc_init(void)
{
rt_err_t ret = RT_EOK;
static struct rt_device rtc_dev;
RTC_InitStructure RTC_initStruct;
RTC_initStruct.Year = 2018;
RTC_initStruct.Month = 1;
RTC_initStruct.Date = 1;
RTC_initStruct.Hour = 12;
RTC_initStruct.Minute = 0;
RTC_initStruct.Second = 0;
RTC_initStruct.SecondIEn = 0;
RTC_initStruct.MinuteIEn = 0;
RTC_Init(RTC, &RTC_initStruct);
RTC_Start(RTC);
rtc_dev.type = RT_Device_Class_RTC;
rtc_dev.rx_indicate = RT_NULL;
rtc_dev.tx_complete = RT_NULL;
#ifdef RT_USING_DEVICE_OPS
rtc_dev.ops = &swm320_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 = swm320_rtc_control;
#endif
rtc_dev.user_data = RTC;
ret = rt_device_register(&rtc_dev, "rtc", RT_DEVICE_FLAG_RDWR);
return ret;
}
INIT_DEVICE_EXPORT(rt_hw_rtc_init);
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