/* * Copyright (c) 2006-2018, RT-Thread Development Team * * SPDX-License-Identifier: Apache-2.0 * * Change Logs: * Date Author Notes * 2009-01-05 Bernard the first version * 2011-11-26 aozima implementation time. */ #include #include #include __IO uint32_t AsynchPrediv = 0, SynchPrediv = 0; RTC_TimeTypeDef RTC_TimeStructure; RTC_InitTypeDef RTC_InitStructure; RTC_AlarmTypeDef RTC_AlarmStructure; RTC_DateTypeDef RTC_DateStructure; #define MINUTE 60 #define HOUR (60*MINUTE) #define DAY (24*HOUR) #define YEAR (365*DAY) static int month[12] = { 0, DAY*(31), DAY*(31+29), DAY*(31+29+31), DAY*(31+29+31+30), DAY*(31+29+31+30+31), DAY*(31+29+31+30+31+30), DAY*(31+29+31+30+31+30+31), DAY*(31+29+31+30+31+30+31+31), DAY*(31+29+31+30+31+30+31+31+30), DAY*(31+29+31+30+31+30+31+31+30+31), DAY*(31+29+31+30+31+30+31+31+30+31+30) }; static struct rt_device rtc; static time_t rt_mktime(struct tm *tm) { long res; int year; year = tm->tm_year - 70; res = YEAR * year + DAY * ((year + 1) / 4); res += month[tm->tm_mon]; if (tm->tm_mon > 1 && ((year + 2) % 4)) res -= DAY; res += DAY * (tm->tm_mday - 1); res += HOUR * tm->tm_hour; res += MINUTE * tm->tm_min; res += tm->tm_sec; return res; } static rt_err_t rt_rtc_open(rt_device_t dev, rt_uint16_t oflag) { if (dev->rx_indicate != RT_NULL) { /* Open Interrupt */ } return RT_EOK; } static rt_size_t rt_rtc_read(rt_device_t dev, rt_off_t pos, void* buffer, rt_size_t size) { return 0; } static rt_err_t rt_rtc_control(rt_device_t dev, int cmd, void *args) { time_t *time; struct tm ti,*to; RT_ASSERT(dev != RT_NULL); switch (cmd) { case RT_DEVICE_CTRL_RTC_GET_TIME: time = (time_t *)args; /* read device */ //RTC_GetTimeStamp(RTC_Format_BIN, &RTC_TimeStructure, &RTC_DateStructure); RTC_GetTime(RTC_Format_BIN, &RTC_TimeStructure); RTC_GetDate(RTC_Format_BIN, &RTC_DateStructure); ti.tm_sec = RTC_TimeStructure.RTC_Seconds; ti.tm_min = RTC_TimeStructure.RTC_Minutes; ti.tm_hour = RTC_TimeStructure.RTC_Hours; //ti.tm_wday = (RTC_DateStructure.RTC_WeekDay==7)?0:RTC_DateStructure.RTC_WeekDay; ti.tm_mon = RTC_DateStructure.RTC_Month -1; ti.tm_mday = RTC_DateStructure.RTC_Date; ti.tm_year = RTC_DateStructure.RTC_Year + 70; *time = rt_mktime(&ti); //*time = RTC_GetCounter(); break; case RT_DEVICE_CTRL_RTC_SET_TIME: { time = (time_t *)args; /* Enable the PWR clock */ RCC_APB1PeriphClockCmd(RCC_APB1Periph_PWR, ENABLE); /* Allow access to RTC */ PWR_BackupAccessCmd(ENABLE); /* Wait until last write operation on RTC registers has finished */ //RTC_WaitForLastTask(); /* Change the current time */ //RTC_SetCounter(*time); to = gmtime(time); RTC_TimeStructure.RTC_Seconds = to->tm_sec; RTC_TimeStructure.RTC_Minutes = to->tm_min; RTC_TimeStructure.RTC_Hours = to->tm_hour; //RTC_DateStructure.RTC_WeekDay =(ti->tm_wday==0)?7:ti->tm_wday; RTC_DateStructure.RTC_Month = to->tm_mon + 1; RTC_DateStructure.RTC_Date = to->tm_mday; RTC_DateStructure.RTC_Year = to->tm_year - 70; RTC_SetTime(RTC_Format_BIN, &RTC_TimeStructure); RTC_SetDate(RTC_Format_BIN, &RTC_DateStructure); /* Wait until last write operation on RTC registers has finished */ //RTC_WaitForLastTask(); RTC_WriteBackupRegister(RTC_BKP_DR1, 0xA5A5); //BKP_WriteBackupRegister(BKP_DR1, 0xA5A5); } break; } return RT_EOK; } /******************************************************************************* * Function Name : RTC_Configuration * Description : Configures the RTC. * Input : None * Output : None * Return : 0 reday,-1 error. *******************************************************************************/ int RTC_Config(void) { u32 count=0x200000; /* Enable the PWR clock */ RCC_APB1PeriphClockCmd(RCC_APB1Periph_PWR, ENABLE); /* Allow access to RTC */ PWR_BackupAccessCmd(ENABLE); RCC_LSEConfig(RCC_LSE_ON); /* Wait till LSE is ready */ while ( (RCC_GetFlagStatus(RCC_FLAG_LSERDY) == RESET) && (--count) ); if ( count == 0 ) { return -1; } /* Select the RTC Clock Source */ RCC_RTCCLKConfig(RCC_RTCCLKSource_LSE); SynchPrediv = 0xFF; AsynchPrediv = 0x7F; /* Enable the RTC Clock */ RCC_RTCCLKCmd(ENABLE); /* Wait for RTC APB registers synchronisation */ RTC_WaitForSynchro(); /* Enable The TimeStamp */ //RTC_TimeStampCmd(RTC_TimeStampEdge_Falling, ENABLE); return 0; } int RTC_Configuration(void) { if(RTC_Config() < 0 ) return -1; /* Set the Time */ RTC_TimeStructure.RTC_Hours = 0; RTC_TimeStructure.RTC_Minutes = 0; RTC_TimeStructure.RTC_Seconds = 0; /* Set the Date */ RTC_DateStructure.RTC_Month = 1; RTC_DateStructure.RTC_Date = 1; RTC_DateStructure.RTC_Year = 0; RTC_DateStructure.RTC_WeekDay = 4; /* Calendar Configuration */ RTC_InitStructure.RTC_AsynchPrediv = AsynchPrediv; RTC_InitStructure.RTC_SynchPrediv = SynchPrediv; RTC_InitStructure.RTC_HourFormat = RTC_HourFormat_24; RTC_Init(&RTC_InitStructure); /* Set Current Time and Date */ RTC_SetTime(RTC_Format_BCD, &RTC_TimeStructure); RTC_SetDate(RTC_Format_BCD, &RTC_DateStructure); if (RTC_Init(&RTC_InitStructure) == ERROR) return -1; return 0; } void rt_hw_rtc_init(void) { rtc.type = RT_Device_Class_RTC; if (RTC_ReadBackupRegister(RTC_BKP_DR1) != 0xA5A5) { rt_kprintf("rtc is not configured\n"); rt_kprintf("please configure with set_date and set_time\n"); if ( RTC_Configuration() != 0) { rt_kprintf("rtc configure fail...\r\n"); return ; } } else { /* Wait for RTC registers synchronization */ RTC_WaitForSynchro(); } /* register rtc device */ rtc.init = RT_NULL; rtc.open = rt_rtc_open; rtc.close = RT_NULL; rtc.read = rt_rtc_read; rtc.write = RT_NULL; rtc.control = rt_rtc_control; /* no private */ rtc.user_data = RT_NULL; rt_device_register(&rtc, "rtc", RT_DEVICE_FLAG_RDWR); return; }