RTC.rar_STM32F051x_The Family_arm embedded os

#include "stm32f0xx.h" #include "hardware.h" #define BKP_VALUE 0x55AA #define BKP_ADDRESS 0x0004 #define RTC_CLOCK_SOURCE_LSE /* LSE used as RTC source clock */ volatile uint32_t AsynchPrediv = 0, SynchPrediv = 0; unsigned char RTC_String[20] = "2012-09-28 12:00:00"; unsigned char RTC_STime[10]; unsigned char RTC_SDate[10]; RTC_TimeTypeDef RTC_Time; RTC_DateTypeDef RTC_Date; void RTC_Config(void) { /* Enable the PWR clock */ RCC_APB1PeriphClockCmd(RCC_APB1Periph_PWR, ENABLE); /* Allow access to RTC */ PWR_BackupAccessCmd(ENABLE); #if defined (RTC_CLOCK_SOURCE_LSI) /* LSI used as RTC source clock*/ /* The RTC Clock may varies due to LSI frequency dispersion. */ /* Enable the LSI OSC */ RCC_LSICmd(ENABLE); /* Wait till LSI is ready */ while(RCC_GetFlagStatus(RCC_FLAG_LSIRDY) == RESET) { } /* Select the RTC Clock Source */ RCC_RTCCLKConfig(RCC_RTCCLKSource_LSI); SynchPrediv = 0x18F; AsynchPrediv = 0x63; #elif defined (RTC_CLOCK_SOURCE_LSE) /* LSE used as RTC source clock */ /* Enable the LSE OSC */ RCC_LSEConfig(RCC_LSE_ON); /* Wait till LSE is ready */ while(RCC_GetFlagStatus(RCC_FLAG_LSERDY) == RESET) { } /* Select the RTC Clock Source */ RCC_RTCCLKConfig(RCC_RTCCLKSource_LSE); SynchPrediv = 0xFF; AsynchPrediv = 0x7F; #else #error Please select the RTC Clock source inside the main.c file #endif /* RTC_CLOCK_SOURCE_LSI */ /* Enable the RTC Clock */ RCC_RTCCLKCmd(ENABLE); /* Wait for RTC APB registers synchronisation */ RTC_WaitForSynchro(); } void RTC_TimeRegulate(void) { RTC_Date.RTC_Year = 12; RTC_Date.RTC_Month = 10; RTC_Date.RTC_Date = 5; RTC_Date.RTC_WeekDay = 5; RTC_SetDate(RTC_Format_BIN, &RTC_Date); RTC_Time.RTC_Hours = 12; RTC_Time.RTC_Minutes = 0; RTC_Time.RTC_Seconds = 0; /* Configure the RTC time register */ if(RTC_SetTime(RTC_Format_BIN, &RTC_Time) == ERROR) { LCD_WR_String("RTC Set Time failed. !!"); } else { LCD_WR_String("RTC Set Time success. !!"); /* Indicator for the RTC configuration */ RTC_WriteBackupRegister(RTC_BKP_DR0, BKP_VALUE); RTC_WriteBackupRegister(RTC_BKP_DR1, BKP_ADDRESS); } } void RTC_Configuration(void) { RTC_InitTypeDef RTC_InitStructure; if (RTC_ReadBackupRegister(RTC_BKP_DR0) != BKP_VALUE) { /* RTC configuration */ RTC_Config(); /* Configure the RTC data register and RTC prescaler */ RTC_InitStructure.RTC_AsynchPrediv = AsynchPrediv; RTC_InitStructure.RTC_SynchPrediv = SynchPrediv; RTC_InitStructure.RTC_HourFormat = RTC_HourFormat_24; /* Check on RTC init */ if (RTC_Init(&RTC_InitStructure) == ERROR) { LCD_WR_String("RTC Prescaler Config failed."); } /* Configure the time register */ RTC_TimeRegulate(); } else { /* Check if the Power On Reset flag is set */ if (RCC_GetFlagStatus(RCC_FLAG_PORRST) != RESET) { LCD_WR_String("Power On Reset occurred...."); } /* Check if the Pin Reset flag is set */ else if (RCC_GetFlagStatus(RCC_FLAG_PINRST) != RESET) { LCD_WR_String("External Reset occurred...."); } LCD_WR_String("No need to configure RTC...."); /* Enable the PWR clock */ RCC_APB1PeriphClockCmd(RCC_APB1Periph_PWR, ENABLE); /* Allow access to RTC */ PWR_BackupAccessCmd(ENABLE); /* Wait for RTC APB registers synchronisation */ RTC_WaitForSynchro(); /* Clear the RTC Alarm Flag */ RTC_ClearFlag(RTC_FLAG_ALRAF); /* Clear the EXTI Line 17 Pending bit (Connected internally to RTC Alarm) */ EXTI_ClearITPendingBit(EXTI_Line17); /* Display the RTC Time and Alarm */ RTC_GetTime(RTC_Format_BIN, &RTC_Time); RTC_GetDate(RTC_Format_BIN, &RTC_Date); } USART1_Address = RTC_ReadBackupRegister(RTC_BKP_DR1); RTC_Update(); } void RTC_Update(void) { unsigned int tmpreg; unsigned int i; tmpreg = (uint32_t)(RTC->DR & 0x00FFFF3F); RTC_String[ 0] = '2'; RTC_String[ 1] = '0'; RTC_String[ 2] = '0' + (unsigned char)((tmpreg & RTC_DR_YT) >> 20); RTC_String[ 3] = '0' + (unsigned char)((tmpreg & RTC_DR_YU) >> 16); RTC_String[ 5] = '0' + (unsigned char)((tmpreg & RTC_DR_MT) >> 12); RTC_String[ 6] = '0' + (unsigned char)((tmpreg & RTC_DR_MU) >> 8); RTC_String[ 8] = '0' + (unsigned char)((tmpreg & RTC_DR_DT) >> 4); RTC_String[ 9] = '0' + (unsigned char)((tmpreg & RTC_DR_DU) >> 0); tmpreg = (uint32_t)(RTC->TR & 0x007F7F7F); RTC_String[11] = '0' + (unsigned char)((tmpreg & RTC_TR_HT) >> 20); RTC_String[12] = '0' + (unsigned char)((tmpreg & RTC_TR_HU) >> 16); RTC_String[14] = '0' + (unsigned char)((tmpreg & RTC_TR_MNT) >> 12); RTC_String[15] = '0' + (unsigned char)((tmpreg & RTC_TR_MNU) >> 8); RTC_String[17] = '0' + (unsigned char)((tmpreg & RTC_TR_ST) >> 4); RTC_String[18] = '0' + (unsigned char)((tmpreg & RTC_TR_SU) >> 0); for (i = 0; i < 8; i++) RTC_STime[i] = RTC_String[11 + i]; for (i = 0; i < 8; i++) RTC_SDate[i] = RTC_String[ 2 + i]; } unsigned char RTC_GetWeek(unsigned short year, unsigned char month, unsigned char day) { unsigned char const table_week[12] = {0, 3, 3, 6, 1, 4, 6, 2, 5, 0, 3, 5}; unsigned char yearH, yearL; unsigned short temp; yearH = year / 100; yearL = year % 100; // 如果为21世纪,年份数加100 if (yearH > 19) yearL += 100; // 所过闰年数只算1900年之后的 temp = yearL + yearL / 4; temp = temp % 7; temp = temp + day + table_week[month - 1]; if (yearL % 4 == 0 && month < 3) temp--; return(temp % 7); } void RTC_SaveDate(unsigned char *pStr) { RTC_DateTypeDef RTC_Setup; if (pStr[2] == '-' && pStr[5] == '-' && pStr[0] >= '0' && pStr[0] <= '9' && pStr[1] >= '0' && pStr[1] <= '9' && pStr[3] >= '0' && pStr[3] <= '9' && pStr[4] >= '0' && pStr[1] <= '9' && pStr[6] >= '0' && pStr[6] <= '9' && pStr[7] >= '0' && pStr[1] <= '9') { RTC_Setup.RTC_Year = (pStr[0] - '0') * 10 + (pStr[1] - '0'); RTC_Setup.RTC_Month = (pStr[3] - '0') * 10 + (pStr[4] - '0'); RTC_Setup.RTC_Date = (pStr[6] - '0') * 10 + (pStr[7] - '0'); RTC_Setup.RTC_WeekDay = RTC_GetWeek(RTC_Setup.RTC_Year + 2000, RTC_Setup.RTC_Month, RTC_Setup.RTC_Date); RTC_SetDate(RTC_Format_BIN, &RTC_Setup); } } void RTC_SaveTime(unsigned char *pStr) { RTC_TimeTypeDef RTC_Setup; if (pStr[2] == ':' && pStr[5] == ':' && pStr[0] >= '0' && pStr[0] <= '9' && pStr[1] >= '0' && pStr[1] <= '9' && pStr[3] >= '0' && pStr[3] <= '9' && pStr[4] >= '0' && pStr[1] <= '9' && pStr[6] >= '0' && pStr[6] <= '9' && pStr[7] >= '0' && pStr[1] <= '9') { RTC_Setup.RTC_Hours = (pStr[0] - '0') * 10 + (pStr[1] - '0'); RTC_Setup.RTC_Minutes = (pStr[3] - '0') * 10 + (pStr[4] - '0'); RTC_Setup.RTC_Seconds = (pStr[6] - '0') * 10 + (pStr[7] - '0'); RTC_Setup.RTC_H12 = 0x00; RTC_SetTime(RTC_Format_BIN, &RTC_Setup); } }