stm8 定时唤醒时第一次运行有延时

cdm 提问时间：2021-8-31 17:21 /

各位大佬好！我最近就做一个STM8L定时唤醒，STM8L050程序调用RTC_WakeUpCmd(DISABLE)语句，就进WUTWF标志超时，导致上电第一次有一个很大延时后面程序能正常运行，用的官方STM8的函数库
程序卡在下面这个while里面超时后退出导致第一次运行有一个很大的延时
/* Wait until WUTWF flag is set */
while (((RTC->ISR1 & RTC_ISR1_WUTWF) == RESET) && ( wutwfcount != WUTWF_TIMEOUT))
{
   //wutwfstatus = (uint8_t)(RTC->ISR1 & RTC_ISR1_WUTWF);
   wutwfcount++;
}

以下是部分代码：
void RTC_Config(void)
{
//RTC_DeInit();
/* Enable RTC clock */
CLK_RTCClockConfig(CLK_RTCCLKSource_LSI,CLK_RTCCLKDiv_1);//RTC Clock Source Selection
/* Enable RTC clock */
CLK_PeripheralClockConfig(CLK_Peripheral_RTC, ENABLE);//使能RTC的时钟
/* Configures the RTC wakeup timer_step = RTCCLK/16 = 1/38K/16 = 1644.7368 us */
RTC_WakeUpClockConfig(RTC_WakeUpClock_CK_SPRE_16bits);
/* Enable wake up unit Interrupt */
RTC_ITConfig(RTC_IT_WUT, ENABLE);
/* Enable general Interrupt*/
enableInterrupts();
}

void Delay(__IO uint16_t nCount)
{
  /* Decrement nCount value */
  while (nCount != 0)
  {
nCount--;
nop();nop();nop(); nop();nop();nop();
  }

}
void main(void)
{
CLK_Config();
Delay(10000);
Begin:
/* CLK configuration -------------------------------------------*/
CLK_Config();
PWR_UltraLowPowerCmd(ENABLE);/* */
/* RTC configuration -------------------------------------------*/
RTC_Config();
//RTC_ClearFlag(RTC_FLAG_WUTWF);
   /* TIM2 configuration -------------------------------------------*/
//TIM2_Config();
GPIO_Init(GPIOB, GPIO_Pin_6, GPIO_Mode_Out_PP_Low_Fast);
  while (1)
  {
  /* Enter Wait for interrupt mode*/
//  wfi();
//  GPIO_ToggleBits(GPIOB, GPIO_Pin_6);
GPIO_SetBits(GPIOB, GPIO_Pin_6);
Delay(1000);//500ms
GPIO_ResetBits(GPIOB, GPIO_Pin_6);

RTC_SetWakeUpCounter(1);//
RTC_WakeUpCmd(ENABLE);
//GPIO_Init(GPIOA, GPIO_Pin_All, GPIO_Mode_Out_PP_Low_Fast);
//GPIO_ResetBits(GPIOA, GPIO_Pin_All);
//GPIO_Init(GPIOB, GPIO_Pin_All, GPIO_Mode_Out_PP_Low_Fast);
  // GPIO_ResetBits(GPIOB, GPIO_Pin_All);
  // GPIO_Init(GPIOC, GPIO_Pin_0 , GPIO_Mode_Out_PP_Low_Fast);//| GPIO_Pin_6
  // GPIO_ResetBits(GPIOC, GPIO_Pin_0 | GPIO_Pin_6);
  // GPIO_Init(GPIOD, GPIO_Pin_All, GPIO_Mode_Out_PP_Low_Fast);
  // GPIO_ResetBits(GPIOD, GPIO_Pin_All);

/* 4. Configure Flash & EEPROM in IDDQ mode while WAIT mode */
//FLASH_PowerWaitModeConfig(FLASH_Power_IDDQ);

halt();
RTC_WakeUpCmd(DISABLE);
goto Begin;
  }
}