- #include "debug.h"
- /* Global define */
- /* Global Variable */
- typedef struct
- {
- vu8 hour;
- vu8 min;
- vu8 sec;
- vu16 w_year;
- vu8 w_month;
- vu8 w_date;
- vu8 week;
- } _calendar_obj;
- _calendar_obj calendar;
- u8 const table_week[12] = {0, 3, 3, 6, 1, 4, 6, 2, 5, 0, 3, 5};
- const u8 mon_table[12] = {31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31};
- /* Exported_Functions */
- u8 RTC_Init(void);
- u8 Is_Leap_Year(u16 year);
- u8 RTC_Alarm_Set(u16 syear, u8 smon, u8 sday, u8 hour, u8 min, u8 sec);
- u8 RTC_Get(void);
- u8 RTC_Get_Week(u16 year, u8 month, u8 day);
- u8 RTC_Set(u16 syear, u8 smon, u8 sday, u8 hour, u8 min, u8 sec);
- /*********************************************************************
- * @fn RTC_NVIC_Config
- *
- * [url=home.php?mod=space&uid=247401]@brief[/url] Initializes RTC Int.
- *
- * [url=home.php?mod=space&uid=266161]@return[/url] none
- */
- static void RTC_NVIC_Config(void)
- {
- NVIC_InitTypeDef NVIC_InitStructure = {0};
- NVIC_InitStructure.NVIC_IRQChannel = RTC_IRQn;
- NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0;
- NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0;
- NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
- NVIC_Init(&NVIC_InitStructure);
- }
- /*********************************************************************
- * @fn RTC_Init
- *
- * @brief Initializes RTC collection.
- *
- * @return 1 - Init Fail
- * 0 - Init Success
- */
- u8 RTC_Init(void)
- {
- u8 temp = 0;
- RCC_APB1PeriphClockCmd(RCC_APB1Periph_PWR | RCC_APB1Periph_BKP, ENABLE);
- PWR_BackupAccessCmd(ENABLE);
- RTC_ClearITPendingBit(RTC_IT_ALR);
- RTC_ClearITPendingBit(RTC_IT_SEC);
- /* Is it the first configuration */
- BKP_DeInit();
- RCC_LSEConfig(RCC_LSE_ON);
- while(RCC_GetFlagStatus(RCC_FLAG_LSERDY) == RESET && temp < 250)
- {
- temp++;
- Delay_Ms(20);
- }
- if(temp >= 250)
- return 1;
- RCC_RTCCLKConfig(RCC_RTCCLKSource_LSE);
- RCC_RTCCLKCmd(ENABLE);
- RTC_WaitForLastTask();
- RTC_WaitForSynchro();
- // RTC_ITConfig(RTC_IT_ALR, ENABLE);
- RTC_ITConfig(RTC_IT_SEC, ENABLE);
- RTC_WaitForLastTask();
- RTC_EnterConfigMode();
- RTC_SetPrescaler(32767);
- RTC_WaitForLastTask();
- RTC_Set(2019, 10, 8, 13, 58, 55); /* Setup Time */
- RTC_ExitConfigMode();
- BKP_WriteBackupRegister(BKP_DR1, 0XA1A1);
- RTC_NVIC_Config();
- RTC_Get();
- return 0;
- }
- /*********************************************************************
- * @fn Is_Leap_Year
- *
- * @brief Judging whether it is a leap year.
- *
- * @param year
- *
- * @return 1 - Yes
- * 0 - No
- */
- u8 Is_Leap_Year(u16 year)
- {
- if(year % 4 == 0)
- {
- if(year % 100 == 0)
- {
- if(year % 400 == 0)
- return 1;
- else
- return 0;
- }
- else
- return 1;
- }
- else
- return 0;
- }
- /*********************************************************************
- * @fn RTC_Set
- *
- * @brief Set Time.
- *
- * @param Struct of _calendar_obj
- *
- * @return 1 - error
- * 0 - success
- */
- u8 RTC_Set(u16 syear, u8 smon, u8 sday, u8 hour, u8 min, u8 sec)
- {
- u16 t;
- u32 seccount = 0;
- if(syear < 1970 || syear > 2099)
- return 1;
- for(t = 1970; t < syear; t++)
- {
- if(Is_Leap_Year(t))
- seccount += 31622400;
- else
- seccount += 31536000;
- }
- smon -= 1;
- for(t = 0; t < smon; t++)
- {
- seccount += (u32)mon_table[t] * 86400;
- if(Is_Leap_Year(syear) && t == 1)
- seccount += 86400;
- }
- seccount += (u32)(sday - 1) * 86400;
- seccount += (u32)hour * 3600;
- seccount += (u32)min * 60;
- seccount += sec;
- RCC_APB1PeriphClockCmd(RCC_APB1Periph_PWR | RCC_APB1Periph_BKP, ENABLE);
- PWR_BackupAccessCmd(ENABLE);
- RTC_SetCounter(seccount);
- RTC_WaitForLastTask();
- return 0;
- }
- /*********************************************************************
- * @fn RTC_Alarm_Set
- *
- * @brief Set Alarm Time.
- *
- * @param Struct of _calendar_obj
- *
- * @return 1 - error
- * 0 - success
- */
- u8 RTC_Alarm_Set(u16 syear, u8 smon, u8 sday, u8 hour, u8 min, u8 sec)
- {
- u16 t;
- u32 seccount = 0;
- if(syear < 1970 || syear > 2099)
- return 1;
- for(t = 1970; t < syear; t++)
- {
- if(Is_Leap_Year(t))
- seccount += 31622400;
- else
- seccount += 31536000;
- }
- smon -= 1;
- for(t = 0; t < smon; t++)
- {
- seccount += (u32)mon_table[t] * 86400;
- if(Is_Leap_Year(syear) && t == 1)
- seccount += 86400;
- }
- seccount += (u32)(sday - 1) * 86400;
- seccount += (u32)hour * 3600;
- seccount += (u32)min * 60;
- seccount += sec;
- RCC_APB1PeriphClockCmd(RCC_APB1Periph_PWR | RCC_APB1Periph_BKP, ENABLE);
- PWR_BackupAccessCmd(ENABLE);
- RTC_SetAlarm(seccount);
- RTC_WaitForLastTask();
- return 0;
- }
- /*********************************************************************
- * @fn RTC_Get
- *
- * @brief Get current time.
- *
- * @return 1 - error
- * 0 - success
- */
- u8 RTC_Get(void)
- {
- static u16 daycnt = 0;
- u32 timecount = 0;
- u32 temp = 0;
- u16 temp1 = 0;
- timecount = RTC_GetCounter();
- temp = timecount / 86400;
- if(daycnt != temp)
- {
- daycnt = temp;
- temp1 = 1970;
- while(temp >= 365)
- {
- if(Is_Leap_Year(temp1))
- {
- if(temp >= 366)
- temp -= 366;
- else
- {
- break;
- }
- }
- else
- temp -= 365;
- temp1++;
- }
- calendar.w_year = temp1;
- temp1 = 0;
- while(temp >= 28)
- {
- if(Is_Leap_Year(calendar.w_year) && temp1 == 1)
- {
- if(temp >= 29)
- temp -= 29;
- else
- break;
- }
- else
- {
- if(temp >= mon_table[temp1])
- temp -= mon_table[temp1];
- else
- break;
- }
- temp1++;
- }
- calendar.w_month = temp1 + 1;
- calendar.w_date = temp + 1;
- }
- temp = timecount % 86400;
- calendar.hour = temp / 3600;
- calendar.min = (temp % 3600) / 60;
- calendar.sec = (temp % 3600) % 60;
- calendar.week = RTC_Get_Week(calendar.w_year, calendar.w_month, calendar.w_date);
- return 0;
- }
- /*********************************************************************
- * @fn RTC_Get_Week
- *
- * @brief Get the current day of the week.
- *
- * @param year/month/day
- *
- * @return week
- */
- u8 RTC_Get_Week(u16 year, u8 month, u8 day)
- {
- u16 temp2;
- u8 yearH, yearL;
- yearH = year / 100;
- yearL = year % 100;
- if(yearH > 19)
- yearL += 100;
- temp2 = yearL + yearL / 4;
- temp2 = temp2 % 7;
- temp2 = temp2 + day + table_week[month - 1];
- if(yearL % 4 == 0 && month < 3)
- temp2--;
- return (temp2 % 7);
- }
- /*********************************************************************
- * @fn main
- *
- * @brief Main program.
- *
- * @return none
- */
- int main(void)
- {
- NVIC_PriorityGroupConfig(NVIC_PriorityGroup_2);
- SystemCoreClockUpdate();
- Delay_Init();
- USART_Printf_Init(115200);
- printf("SystemClk:%d\r\n", SystemCoreClock);
- printf( "ChipID:%08x\r\n", DBGMCU_GetCHIPID() );
- printf("RTC Test\r\n");
- RTC_Init();
- while(1)
- {
- Delay_Ms(1000);
- printf("year/month/day/week/hour/min/sec:\r\n");
- printf("%d-%d-%d %d %d:%d:%d\r\n", calendar.w_year, calendar.w_month, calendar.w_date,
- calendar.week, calendar.hour, calendar.min, calendar.sec);
- }
- }