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/*
* Copyright (c) 2006-2018, RT-Thread Development Team
*
* SPDX-License-Identifier: Apache-2.0
*
* Change Logs:
* Date Author Notes
* 2018-12-04 balanceTWK first version
* 2020-10-14 Dozingfiretruck Porting for stm32wbxx
*/
#include "board.h"
#ifdef BSP_USING_ONCHIP_RTC
#ifndef RTC_BKP_DR1
#define RTC_BKP_DR1 RT_NULL
#endif
//#define DRV_DEBUG
#define LOG_TAG "drv.rtc"
#include <drv_log.h>
#define BKUP_REG_DATA 0xA5A5
static struct rt_device rtc;
static RTC_HandleTypeDef RTC_Handler;
RT_WEAK uint32_t HAL_RTCEx_BKUPRead(RTC_HandleTypeDef *hrtc, uint32_t BackupRegister)
{
return (~BKUP_REG_DATA);
}
RT_WEAK void HAL_RTCEx_BKUPWrite(RTC_HandleTypeDef *hrtc, uint32_t BackupRegister, uint32_t Data)
{
return;
}
static time_t get_rtc_timestamp(void)
{
RTC_TimeTypeDef RTC_TimeStruct = {0};
RTC_DateTypeDef RTC_DateStruct = {0};
struct tm tm_new = {0};
HAL_RTC_GetTime(&RTC_Handler, &RTC_TimeStruct, RTC_FORMAT_BIN);
HAL_RTC_GetDate(&RTC_Handler, &RTC_DateStruct, RTC_FORMAT_BIN);
tm_new.tm_sec = RTC_TimeStruct.Seconds;
tm_new.tm_min = RTC_TimeStruct.Minutes;
tm_new.tm_hour = RTC_TimeStruct.Hours;
tm_new.tm_mday = RTC_DateStruct.Date;
tm_new.tm_mon = RTC_DateStruct.Month - 1;
tm_new.tm_year = RTC_DateStruct.Year + 100;
LOG_D("get rtc time.");
return mktime(&tm_new);
}
static rt_err_t set_rtc_time_stamp(time_t time_stamp)
{
RTC_TimeTypeDef RTC_TimeStruct = {0};
RTC_DateTypeDef RTC_DateStruct = {0};
struct tm *p_tm;
p_tm = localtime(&time_stamp);
if (p_tm->tm_year < 100)
{
return -RT_ERROR;
}
RTC_TimeStruct.Seconds = p_tm->tm_sec ;
RTC_TimeStruct.Minutes = p_tm->tm_min ;
RTC_TimeStruct.Hours = p_tm->tm_hour;
RTC_DateStruct.Date = p_tm->tm_mday;
RTC_DateStruct.Month = p_tm->tm_mon + 1 ;
RTC_DateStruct.Year = p_tm->tm_year - 100;
RTC_DateStruct.WeekDay = p_tm->tm_wday + 1;
if (HAL_RTC_SetTime(&RTC_Handler, &RTC_TimeStruct, RTC_FORMAT_BIN) != HAL_OK)
{
return -RT_ERROR;
}
if (HAL_RTC_SetDate(&RTC_Handler, &RTC_DateStruct, RTC_FORMAT_BIN) != HAL_OK)
{
return -RT_ERROR;
}
LOG_D("set rtc time.");
HAL_RTCEx_BKUPWrite(&RTC_Handler, RTC_BKP_DR1, BKUP_REG_DATA);
#ifdef SOC_SERIES_STM32F1
/* F1 series does't save year/month/date datas. so keep those datas to bkp reg */
HAL_RTCEx_BKUPWrite(&RTC_Handler, RTC_BKP_DR2, RTC_DateStruct.Year);
HAL_RTCEx_BKUPWrite(&RTC_Handler, RTC_BKP_DR3, RTC_DateStruct.Month);
HAL_RTCEx_BKUPWrite(&RTC_Handler, RTC_BKP_DR4, RTC_DateStruct.Date);
HAL_RTCEx_BKUPWrite(&RTC_Handler, RTC_BKP_DR5, RTC_DateStruct.WeekDay);
#endif
return RT_EOK;
}
static void rt_rtc_init(void)
{
#if !defined(SOC_SERIES_STM32H7) && !defined(SOC_SERIES_STM32WB)
__HAL_RCC_PWR_CLK_ENABLE();
#endif
RCC_OscInitTypeDef RCC_OscInitStruct = {0};
#ifdef BSP_RTC_USING_LSI
#ifdef SOC_SERIES_STM32WB
RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_LSI1;
RCC_OscInitStruct.PLL.PLLState = RCC_PLL_NONE;
RCC_OscInitStruct.LSEState = RCC_LSE_OFF;
RCC_OscInitStruct.LSIState = RCC_LSI_ON;
#else
RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_LSI;
RCC_OscInitStruct.PLL.PLLState = RCC_PLL_NONE;
RCC_OscInitStruct.LSEState = RCC_LSE_OFF;
RCC_OscInitStruct.LSIState = RCC_LSI_ON;
#endif
#else
RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_LSE;
RCC_OscInitStruct.PLL.PLLState = RCC_PLL_NONE;
RCC_OscInitStruct.LSEState = RCC_LSE_ON;
RCC_OscInitStruct.LSIState = RCC_LSI_OFF;
#endif
HAL_RCC_OscConfig(&RCC_OscInitStruct);
}
#ifdef SOC_SERIES_STM32F1
/* update RTC_BKP_DRx*/
static void rt_rtc_f1_bkp_update(void)
{
RTC_DateTypeDef RTC_DateStruct = {0};
HAL_PWR_EnableBkUpAccess();
__HAL_RCC_BKP_CLK_ENABLE();
RTC_DateStruct.Year = HAL_RTCEx_BKUPRead(&RTC_Handler, RTC_BKP_DR2);
RTC_DateStruct.Month = HAL_RTCEx_BKUPRead(&RTC_Handler, RTC_BKP_DR3);
RTC_DateStruct.Date = HAL_RTCEx_BKUPRead(&RTC_Handler, RTC_BKP_DR4);
RTC_DateStruct.WeekDay = HAL_RTCEx_BKUPRead(&RTC_Handler, RTC_BKP_DR5);
if (HAL_RTC_SetDate(&RTC_Handler, &RTC_DateStruct, RTC_FORMAT_BIN) != HAL_OK)
{
Error_Handler();
}
HAL_RTC_GetDate(&RTC_Handler, &RTC_DateStruct, RTC_FORMAT_BIN);
if (HAL_RTCEx_BKUPRead(&RTC_Handler, RTC_BKP_DR4) != RTC_DateStruct.Date)
{
HAL_RTCEx_BKUPWrite(&RTC_Handler, RTC_BKP_DR1, BKUP_REG_DATA);
HAL_RTCEx_BKUPWrite(&RTC_Handler, RTC_BKP_DR2, RTC_DateStruct.Year);
HAL_RTCEx_BKUPWrite(&RTC_Handler, RTC_BKP_DR3, RTC_DateStruct.Month);
HAL_RTCEx_BKUPWrite(&RTC_Handler, RTC_BKP_DR4, RTC_DateStruct.Date);
HAL_RTCEx_BKUPWrite(&RTC_Handler, RTC_BKP_DR5, RTC_DateStruct.WeekDay);
}
}
#endif
static rt_err_t rt_rtc_config(struct rt_device *dev)
{
RCC_PeriphCLKInitTypeDef PeriphClkInitStruct = {0};
HAL_PWR_EnableBkUpAccess();
PeriphClkInitStruct.PeriphClockSelection = RCC_PERIPHCLK_RTC;
#ifdef BSP_RTC_USING_LSI
PeriphClkInitStruct.RTCClockSelection = RCC_RTCCLKSOURCE_LSI;
#else
PeriphClkInitStruct.RTCClockSelection = RCC_RTCCLKSOURCE_LSE;
#endif
HAL_RCCEx_PeriphCLKConfig(&PeriphClkInitStruct);
/* Enable RTC Clock */
__HAL_RCC_RTC_ENABLE();
RTC_Handler.Instance = RTC;
if (HAL_RTCEx_BKUPRead(&RTC_Handler, RTC_BKP_DR1) != BKUP_REG_DATA)
{
LOG_I("RTC hasn't been configured, please use <date> command to config.");
#if defined(SOC_SERIES_STM32F1)
RTC_Handler.Init.OutPut = RTC_OUTPUTSOURCE_NONE;
RTC_Handler.Init.AsynchPrediv = RTC_AUTO_1_SECOND;
#elif defined(SOC_SERIES_STM32F0)
/* set the frequency division */
#ifdef BSP_RTC_USING_LSI
RTC_Handler.Init.AsynchPrediv = 0XA0;
RTC_Handler.Init.SynchPrediv = 0xFA;
#else
RTC_Handler.Init.AsynchPrediv = 0X7F;
RTC_Handler.Init.SynchPrediv = 0x0130;
#endif /* BSP_RTC_USING_LSI */
RTC_Handler.Init.HourFormat = RTC_HOURFORMAT_24;
RTC_Handler.Init.OutPut = RTC_OUTPUT_DISABLE;
RTC_Handler.Init.OutPutPolarity = RTC_OUTPUT_POLARITY_HIGH;
RTC_Handler.Init.OutPutType = RTC_OUTPUT_TYPE_OPENDRAIN;
#elif defined(SOC_SERIES_STM32F2) || defined(SOC_SERIES_STM32F4) || defined(SOC_SERIES_STM32F7) || defined(SOC_SERIES_STM32L4) || defined(SOC_SERIES_STM32H7) || defined (SOC_SERIES_STM32WB)
/* set the frequency division */
#ifdef BSP_RTC_USING_LSI
RTC_Handler.Init.AsynchPrediv = 0X7D;
#else
RTC_Handler.Init.AsynchPrediv = 0X7F;
#endif /* BSP_RTC_USING_LSI */
RTC_Handler.Init.SynchPrediv = 0XFF;
RTC_Handler.Init.HourFormat = RTC_HOURFORMAT_24;
RTC_Handler.Init.OutPut = RTC_OUTPUT_DISABLE;
RTC_Handler.Init.OutPutPolarity = RTC_OUTPUT_POLARITY_HIGH;
RTC_Handler.Init.OutPutType = RTC_OUTPUT_TYPE_OPENDRAIN;
#endif
if (HAL_RTC_Init(&RTC_Handler) != HAL_OK)
{
return -RT_ERROR;
}
}
#ifdef SOC_SERIES_STM32F1
else
{
/* F1 series need update by bkp reg datas */
rt_rtc_f1_bkp_update();
}
#endif
return RT_EOK;
}
static rt_err_t rt_rtc_control(rt_device_t dev, int cmd, void *args)
{
rt_err_t result = RT_EOK;
RT_ASSERT(dev != RT_NULL);
switch (cmd)
{
case RT_DEVICE_CTRL_RTC_GET_TIME:
*(rt_uint32_t *)args = get_rtc_timestamp();
LOG_D("RTC: get rtc_time %x\n", *(rt_uint32_t *)args);
break;
case RT_DEVICE_CTRL_RTC_SET_TIME:
if (set_rtc_time_stamp(*(rt_uint32_t *)args))
{
result = -RT_ERROR;
}
LOG_D("RTC: set rtc_time %x\n", *(rt_uint32_t *)args);
break;
}
return result;
}
#ifdef RT_USING_DEVICE_OPS
const static struct rt_device_ops rtc_ops =
{
RT_NULL,
RT_NULL,
RT_NULL,
RT_NULL,
RT_NULL,
rt_rtc_control
};
#endif
static rt_err_t rt_hw_rtc_register(rt_device_t device, const char *name, rt_uint32_t flag)
{
RT_ASSERT(device != RT_NULL);
rt_rtc_init();
if (rt_rtc_config(device) != RT_EOK)
{
return -RT_ERROR;
}
#ifdef RT_USING_DEVICE_OPS
device->ops = &rtc_ops;
#else
device->init = RT_NULL;
device->open = RT_NULL;
device->close = RT_NULL;
device->read = RT_NULL;
device->write = RT_NULL;
device->control = rt_rtc_control;
#endif
device->type = RT_Device_Class_RTC;
device->rx_indicate = RT_NULL;
device->tx_complete = RT_NULL;
device->user_data = RT_NULL;
/* register a character device */
return rt_device_register(device, name, flag);
}
int rt_hw_rtc_init(void)
{
rt_err_t result;
result = rt_hw_rtc_register(&rtc, "rtc", RT_DEVICE_FLAG_RDWR);
if (result != RT_EOK)
{
LOG_E("rtc register err code: %d", result);
return result;
}
LOG_D("rtc init success");
return RT_EOK;
}
INIT_DEVICE_EXPORT(rt_hw_rtc_init);
#endif /* BSP_USING_ONCHIP_RTC */
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