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