248 lines
6.4 KiB
C
248 lines
6.4 KiB
C
/*
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* Copyright (c) 2006-2021, 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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* 2020-05-19 shelton first version
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*/
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#include "board.h"
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#include <rtthread.h>
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#include <sys/time.h>
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#ifdef BSP_USING_RTC
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#ifndef BKP_DR1
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#define 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 time_t get_rtc_timestamp(void)
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{
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#ifdef SOC_SERIES_AT32F415
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struct tm tm_new;
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ERTC_TimeType ERTC_TimeStruct;
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ERTC_DateType ERTC_DateStruct;
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ERTC_GetTimeValue(ERTC_Format_BIN, &ERTC_TimeStruct);
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ERTC_GetDateValue(ERTC_Format_BIN, &ERTC_DateStruct);
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tm_new.tm_sec = ERTC_TimeStruct.ERTC_Seconds;
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tm_new.tm_min = ERTC_TimeStruct.ERTC_Minutes;
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tm_new.tm_hour = ERTC_TimeStruct.ERTC_Hours;
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tm_new.tm_mday = ERTC_DateStruct.ERTC_Date;
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tm_new.tm_mon = ERTC_DateStruct.ERTC_Month - 1;
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tm_new.tm_year = ERTC_DateStruct.ERTC_Year + 100;
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LOG_D("get rtc time.");
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return timegm(&tm_new);
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#else
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return RTC_GetCounter();
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#endif
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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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#ifdef SOC_SERIES_AT32F415
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ERTC_TimeType ERTC_TimeStructure;
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ERTC_DateType ERTC_DateStructure;
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struct tm *p_tm;
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p_tm = gmtime(&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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ERTC_TimeStructure.ERTC_Seconds = p_tm->tm_sec ;
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ERTC_TimeStructure.ERTC_Minutes = p_tm->tm_min ;
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ERTC_TimeStructure.ERTC_Hours = p_tm->tm_hour;
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ERTC_DateStructure.ERTC_Date = p_tm->tm_mday;
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ERTC_DateStructure.ERTC_Month = p_tm->tm_mon + 1 ;
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ERTC_DateStructure.ERTC_Year = p_tm->tm_year - 100;
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ERTC_DateStructure.ERTC_WeekDay = p_tm->tm_wday + 1;
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if (ERTC_SetTimeValue(ERTC_Format_BIN, &ERTC_TimeStructure) != SUCCESS)
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{
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return -RT_ERROR;
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}
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if (ERTC_SetDateValue(ERTC_Format_BIN, &ERTC_DateStructure) != SUCCESS)
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{
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return -RT_ERROR;
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}
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#else
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/* Set the RTC counter value */
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RTC_SetCounter(time_stamp);
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/* Wait until last write operation on RTC registers has finished */
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RTC_WaitForLastTask();
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#endif /* SOC_SERIES_AT32F415 */
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LOG_D("set rtc time.");
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#ifdef SOC_SERIES_AT32F415
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ERTC_WriteBackupRegister(ERTC_BKP_DT0, BKUP_REG_DATA);
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#else
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BKP_WriteBackupReg(BKP_DT1, BKUP_REG_DATA);
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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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#if defined (SOC_SERIES_AT32F415)
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RCC_APB1PeriphClockCmd(RCC_APB1PERIPH_PWR, ENABLE);
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#else
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RCC_APB1PeriphClockCmd(RCC_APB1PERIPH_PWR | RCC_APB1PERIPH_BKP, ENABLE);
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#endif
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#ifdef BSP_RTC_USING_LSI
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RCC_LSICmd(ENABLE);
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while(RCC_GetFlagStatus(RCC_FLAG_LSISTBL) == RESET);
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#else
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PWR_BackupAccessCtrl(ENABLE);
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RCC_LSEConfig(RCC_LSE_ENABLE);
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while(RCC_GetFlagStatus(RCC_FLAG_LSESTBL) == RESET);
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#endif /* BSP_RTC_USING_LSI */
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}
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static rt_err_t rt_rtc_config(struct rt_device *dev)
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{
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#if defined (SOC_SERIES_AT32F415)
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ERTC_InitType ERTC_InitStructure;
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#endif
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/* Allow access to BKP Domain */
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PWR_BackupAccessCtrl(ENABLE);
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#ifdef SOC_SERIES_AT32F415
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#ifdef BSP_RTC_USING_LSI
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RCC_ERTCCLKConfig(RCC_ERTCCLKSelection_LSI);
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RCC_ERTCCLKCmd(ENABLE);
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#else
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RCC_ERTCCLKConfig(RCC_ERTCCLKSelection_LSE);
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RCC_ERTCCLKCmd(ENABLE);
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#endif /* BSP_RTC_USING_LSI */
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/* Wait for ERTC APB registers synchronisation */
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ERTC_WaitForSynchro();
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#else
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#ifdef BSP_RTC_USING_LSI
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RCC_RTCCLKConfig(RCC_RTCCLKSelection_LSI);
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RCC_RTCCLKCmd(ENABLE);
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#else
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RCC_RTCCLKConfig(RCC_RTCCLKSelection_LSE);
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RCC_RTCCLKCmd(ENABLE);
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#endif /* BSP_RTC_USING_LSI */
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/* Wait for RTC registers synchronization */
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RTC_WaitForSynchro();
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/* Wait until last write operation on RTC registers has finished */
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RTC_WaitForLastTask();
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#endif /* SOC_SERIES_AT32F415 */
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#ifdef SOC_SERIES_AT32F415
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if (ERTC_ReadBackupRegister(BKP_DT1)!= BKUP_REG_DATA)
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#else
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if (BKP_ReadBackupReg(BKP_DT1) != BKUP_REG_DATA)
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#endif
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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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#ifdef SOC_SERIES_AT32F415
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/* Configure the ERTC data register and ERTC prescaler */
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ERTC_InitStructure.ERTC_AsynchPrediv = 0x7F;
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ERTC_InitStructure.ERTC_SynchPrediv = 0xFF;
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ERTC_InitStructure.ERTC_HourFormat = ERTC_HourFormat_24;
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ERTC_Init(&ERTC_InitStructure);
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#else
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/* Set RTC prescaler: set RTC period to 1sec */
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RTC_SetDIV(32767);
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/* Wait until last write operation on RTC registers has finished */
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RTC_WaitForLastTask();
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#endif
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}
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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_RTC */
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