RCC_APB1PeriphClockCmd(RCC_APB1Periph_PWR,ENABLE);
  // Access for RTC registers
  PWR_RTCAccessCmd(ENABLE);
 
  /* Enable Low Speed External clock */
  RCC_LSEConfig(RCC_LSE_ON);

  /* Wait till LSE is ready */
  while (RCC_GetFlagStatus(RCC_FLAG_LSERDY) == RESET);

  /* Select LSE clock as RCC Clock source */
  RCC_RTCCLKConfig(RCC_RTCCLKSource_LSE);
 
  RCC_APB1PeriphClockCmd(RCC_APB1Periph_LCD, ENABLE);
 
  /*RCC_RTCResetCmd(ENABLE);
  RCC_RTCResetCmd(DISABLE);*/
  RCC_RTCCLKConfig(RCC_RTCCLKSource_LSE);
  //RCC_RTCCLKCmd   (ENABLE); //???
 
  PWR_FastWakeUpCmd(ENABLE);