#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);
}
}
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