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/*
* File : drv_rtc.c
* This file is part of RT-Thread RTOS
* COPYRIGHT (C) 2015, RT-Thread Development Team
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Change Logs:
* Date Author Notes
* 2017-10-25 ZYH first implementation
*/
#include "drv_rtc.h"
#include <board.h>
#include <rtdevice.h>
#include <string.h>
#include <time.h>
RTC_HandleTypeDef hrtc;
/* RTC init function */
void MX_RTC_Init(void)
{
RTC_TimeTypeDef sTime;
RTC_DateTypeDef sDate;
/**Initialize RTC Only
*/
hrtc.Instance = RTC;
hrtc.Init.HourFormat = RTC_HOURFORMAT_24;
hrtc.Init.AsynchPrediv = 127;
hrtc.Init.SynchPrediv = 255;
hrtc.Init.OutPut = RTC_OUTPUT_DISABLE;
hrtc.Init.OutPutPolarity = RTC_OUTPUT_POLARITY_HIGH;
hrtc.Init.OutPutType = RTC_OUTPUT_TYPE_OPENDRAIN;
RT_ASSERT(HAL_RTC_Init(&hrtc) == HAL_OK);
/**Initialize RTC and set the Time and Date
*/
if (HAL_RTCEx_BKUPRead(&hrtc, RTC_BKP_DR0) != 0x32F2)
{
sTime.Hours = 22;
sTime.Minutes = 28;
sTime.Seconds = 0;
sTime.DayLightSaving = RTC_DAYLIGHTSAVING_NONE;
sTime.StoreOperation = RTC_STOREOPERATION_RESET;
RT_ASSERT(HAL_RTC_SetTime(&hrtc, &sTime, RTC_FORMAT_BIN) == HAL_OK);
sDate.WeekDay = RTC_WEEKDAY_THURSDAY;
sDate.Month = RTC_MONTH_OCTOBER;
sDate.Date = 26;
sDate.Year = 17;
RT_ASSERT(HAL_RTC_SetDate(&hrtc, &sDate, RTC_FORMAT_BIN) == HAL_OK);
}
HAL_RTCEx_BKUPWrite(&hrtc, RTC_BKP_DR0, 0x32F2);
}
void HAL_RTC_MspInit(RTC_HandleTypeDef *rtcHandle)
{
if (rtcHandle->Instance == RTC)
{
/* USER CODE BEGIN RTC_MspInit 0 */
/* USER CODE END RTC_MspInit 0 */
/* RTC clock enable */
__HAL_RCC_RTC_ENABLE();
/* USER CODE BEGIN RTC_MspInit 1 */
/* USER CODE END RTC_MspInit 1 */
}
}
void HAL_RTC_MspDeInit(RTC_HandleTypeDef *rtcHandle)
{
if (rtcHandle->Instance == RTC)
{
/* USER CODE BEGIN RTC_MspDeInit 0 */
/* USER CODE END RTC_MspDeInit 0 */
/* Peripheral clock disable */
__HAL_RCC_RTC_DISABLE();
/* USER CODE BEGIN RTC_MspDeInit 1 */
/* USER CODE END RTC_MspDeInit 1 */
}
}
static rt_err_t stm32_rtc_control(struct rt_device *dev,
int cmd,
void *args)
{
struct tm *tm_now;
struct tm now;
RTC_TimeTypeDef sTime;
RTC_DateTypeDef sDate;
rt_enter_critical();
/* converts calendar time time into local time. */
tm_now = localtime((const time_t *) args);
/* copy the statically located variable */
memcpy(&now, tm_now, sizeof(struct tm));
/* unlock scheduler. */
rt_exit_critical();
switch (cmd)
{
case RT_DEVICE_CTRL_RTC_GET_TIME:
HAL_RTC_GetTime(&hrtc, &sTime, RTC_FORMAT_BIN);
HAL_RTC_GetDate(&hrtc, &sDate, RTC_FORMAT_BIN);
now.tm_hour = sTime.Hours;
now.tm_min = sTime.Minutes;
now.tm_sec = sTime.Seconds;
now.tm_year = sDate.Year + 100;
now.tm_mon = sDate.Month - 1;
now.tm_mday = sDate.Date;
*((time_t *)args) = mktime(&now);
break;
case RT_DEVICE_CTRL_RTC_SET_TIME:
sTime.Hours = now.tm_hour;
sTime.Minutes = now.tm_min;
sTime.Seconds = now.tm_sec;
sDate.Year = now.tm_year - 100;
sDate.Month = now.tm_mon + 1;
sDate.Date = now.tm_mday;
HAL_RTC_SetTime(&hrtc, &sTime, RTC_FORMAT_BIN);
HAL_RTC_SetDate(&hrtc, &sDate, RTC_FORMAT_BIN);
break;
}
return RT_EOK;
}
static rt_err_t stm32_rtc_init(struct rt_device *dev)
{
return RT_EOK;
}
static rt_err_t stm32_rtc_open(struct rt_device *dev, rt_uint16_t oflag)
{
return RT_EOK;
}
static rt_err_t stm32_rtc_close(struct rt_device *dev)
{
return RT_EOK;
}
static rt_size_t stm32_rtc_read(struct rt_device *dev,
rt_off_t pos,
void *buffer,
rt_size_t size)
{
stm32_rtc_control(dev,RT_DEVICE_CTRL_RTC_GET_TIME,buffer);
return size;
}
static rt_size_t stm32_rtc_write(struct rt_device *dev,
rt_off_t pos,
const void *buffer,
rt_size_t size)
{
stm32_rtc_control(dev,RT_DEVICE_CTRL_RTC_SET_TIME,(void *)buffer);
return size;
}
struct rt_device rtc_device;
int rt_hw_rtc_init(void)
{
MX_RTC_Init();
rtc_device.type = RT_Device_Class_RTC;
rtc_device.rx_indicate = RT_NULL;
rtc_device.tx_complete = RT_NULL;
rtc_device.init = stm32_rtc_init;
rtc_device.open = stm32_rtc_open;
rtc_device.close = stm32_rtc_close;
rtc_device.read = stm32_rtc_read;
rtc_device.write = stm32_rtc_write;
rtc_device.control = stm32_rtc_control;
rtc_device.user_data = RT_NULL;
/* register a character device */
return rt_device_register(&rtc_device, "rtc", RT_DEVICE_FLAG_DEACTIVATE);
}
INIT_BOARD_EXPORT(rt_hw_rtc_init);
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