Low power consumption application of STM8L051X series RTC

  GPIO_Init(GPIOA,GPIO_Pin_0,GPIO_Mode_Out_PP_Low_Slow);

  GPIO_Init(GPIOB,GPIO_Pin_2|GPIO_Pin_3|GPIO_Pin_4|GPIO_Pin_5|GPIO_Pin_6|GPIO_Pin_7,GPIO_Mode_Out_PP_Low_Slow);

  GPIO_Init(GPIOC,GPIO_Pin_1|GPIO_Pin_4,GPIO_Mode_Out_PP_Low_Slow);

  GPIO_Init(GPIOD,GPIO_Pin_0,GPIO_Mode_Out_PP_Low_Slow);

 /********************************************************************/  

  UART1_Init();

  ADC1_Config();  

  RTC_Init();

//TIM4_Config();

  ADC_Value_1 = Read_ADC_Value();

// IWDG_Config(); //Independent watchdog

  WWDG_Config(); //Window watchdog

  enableInterrupts(); //Enable total interrupt 

  printf("The System Startrn");

  AWU_RTC(600); //Set wakeup every 10 minutes

  while(1)

  {

    WWDG_SetCounter(COUNTER_INIT); //Feed the window watchdog

    RTC_Print(); //Print RTC time  

    if(Ws_Flag==1) //If it is morning time, check ADC

    {         

      ADC_Value_1 = Read_ADC_Value(); 

      ADC_Value=(ADC_Value_1*3300)/4096;      

      if(ADC_Value<2450)

      {       

          GPIO_ResetBits(GPIOC,GPIO_Pin_4);  

          printf("***Insufficient power detected, power turned off***rn");

       }

      else if(ADC_Value>=2540)

      {

          GPIO_SetBits(GPIOC,GPIO_Pin_4);

          printf("***Sufficient power, power on***rn");

      } 

      printf("ADC:%ldmvrn",ADC_Value);

    }    

    else //Turn off the power if the night time is off

    {

      GPIO_ResetBits(GPIOC,GPIO_Pin_4);

    }

    halt(); //Enter active halt mode, the program is blocked here

  }

}

Unlike STM32 and STM8, this microcontroller requires manual interrupt enablement, i.e. code enableInterrupts(); //Open the general interrupt, otherwise the alarm interrupt cannot be entered.

The alarm interrupt and wake-up interrupt share an interrupt service function as follows:

INTERRUPT_HANDLER(RTC_CSSLSE_IRQHandler,4)

{

  if(RTC_GetITStatus(RTC_IT_ALRA))//Judge the alarm interrupt flag

  {

      if(Close_Flag==1)

      {

        Time_print();

      }

      else if(Open_Flag==1)

      {

        Time_print();

      }

  }

  RTC_ClearITPendingBit(RTC_IT_ALRA); //Clear flag bit

  RTC->ISR2 &= (uint8_t)(~0x04);

}

For the initialization code of other peripherals, please refer to the link below:

http://bbs.21ic.com/home.php?mod=space&uid=1875788&do=thread&view=me&order=dateline&from=space&page=2