void setuppwr() {
PWR_DeInit();
RCC_APB1PeriphClockCmd(RCC_APB1Periph_PWR,ENABLE);//clk to the pwr control
}
static void RTC_Config32768Internal(void) {
NVIC_InitTypeDef NVIC_InitStructure;
EXTI_InitTypeDef EXTI_InitStructure;
RTC_DateTypeDef RTC_DateStruct;
//uint8_t yr;
/* Enable the PWR clock */
RCC_APB1PeriphClockCmd(RCC_APB1Periph_PWR, ENABLE);
/* SYSCFG Peripheral clock enable */
RCC_APB2PeriphClockCmd(RCC_APB2Periph_SYSCFG, ENABLE);
PWR_DeInit();
/* Allow access to RTC */
PWR_RTCAccessCmd(ENABLE);
/* LSI used as RTC source clock */
/* The RTC Clock may varies due to LSI frequency dispersion. */
/* Enable the LSI OSC */
//RCC_LSICmd(ENABLE);
RCC_RTCCLKConfig(RCC_RTCCLKSource_LSE);
RCC_LSEConfig(RCC_LSE_ON);
/* Wait till LSI is ready */
//while(RCC_GetFlagStatus(RCC_FLAG_LSIRDY) == RESET)
while (RCC_GetFlagStatus(RCC_FLAG_LSERDY) == RESET) {
}
/* Select the RTC Clock Source */
//RCC_RTCCLKConfig(RCC_RTCCLKSource_LSI);
/* Enable the RTC Clock */
RCC_RTCCLKCmd(ENABLE);
/* Wait for RTC APB registers synchronisation */
RTC_WaitForSynchro();
// LSE 32768
RTC_InitStructure.RTC_AsynchPrediv = 127;
RTC_InitStructure.RTC_SynchPrediv = 255;
/* Calendar Configuration with LSI supposed at 37KHz */
//RTC_InitStructure.RTC_AsynchPrediv = 124;
//RTC_InitStructure.RTC_SynchPrediv = 295; /* (32KHz / 128) - 1 = 0xFF*/
RTC_InitStructure.RTC_HourFormat = RTC_HourFormat_24;
RTC_Init(&RTC_InitStructure);
/* Set the time to 05h 20mn 00s AM */
RTC_TimeStructure.RTC_H12 = RTC_H12_PM;
RTC_TimeStructure.RTC_Hours = 0x23;
RTC_TimeStructure.RTC_Minutes = 0x59;
RTC_TimeStructure.RTC_Seconds = 0x50;
RTC_SetTime(RTC_Format_BCD, &RTC_TimeStructure);
RTC_DateStruct.RTC_Year = 14;
RTC_DateStruct.RTC_Month = 10;
RTC_DateStruct.RTC_Date = 4;
RTC_DateStruct.RTC_WeekDay = 6;
//day = 5;
RTC_SetDate(RTC_Format_BIN, &RTC_DateStruct);
//RTC_GetDate(RTC_Format_BCD, &RTC_DateStruct);
//yr = RTC_DateStruct.RTC_Year;
/* EXTI configuration *******************************************************/
EXTI_ClearITPendingBit(EXTI_Line20);
EXTI_InitStructure.EXTI_Line = EXTI_Line20;
EXTI_InitStructure.EXTI_Mode = EXTI_Mode_Interrupt;
EXTI_InitStructure.EXTI_Trigger = EXTI_Trigger_Rising;
EXTI_InitStructure.EXTI_LineCmd = ENABLE;
EXTI_Init(&EXTI_InitStructure);
// Configuring RTC_WakeUp interrupt
NVIC_InitStructure.NVIC_IRQChannel = RTC_WKUP_IRQn;
NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0;
NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0;
NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
NVIC_Init(&NVIC_InitStructure);
// RTC Wakeup Configuration
RTC_WakeUpClockConfig(RTC_WakeUpClock_CK_SPRE_16bits);
// RTC Set WakeUp Counter
RTC_SetWakeUpCounter(0);
// Enabling RTC_WakeUp interrupt
RTC_ITConfig(RTC_IT_WUT, ENABLE);
// Disabling Alarm Flags
RTC_AlarmCmd(RTC_Alarm_A, DISABLE);
RTC_AlarmCmd(RTC_Alarm_B, DISABLE);
// RTC Enable the Wakeup Function
RTC_WakeUpCmd(ENABLE);
}