I removed the STlink of the NUCLEO F722ZE board and wrote it, but there was a clock error, so the program itself is not working
It worked normally when there was Stlink, but it’s not working

I set it to HSI and used it, but it didn’t work, so a clock issue occurred to switch to HSE, so I thought it would be okay to just debug it, but at some point, the clock didn’t work, so it didn’t come out of stop mode
I set it as an rtc alarm and woke it up, but it seems like a clock error when it stops after going well

How can I fix this error?
Stlink uses a lot of electric current, so it needs to be removed

I removed only the stlink from the hardware, but this is the situation

Original settings before removing STlink

Setting changed to clock error after removing STlink

This is the setting I used before, but after removing the STlink, the HAL_RCC_OscConfig(&RCC_OscInitStructure) error handle occurred in this part

void SystemClock_Config(void)
{
  RCC_OscInitTypeDef RCC_OscInitStruct = {0};
  RCC_ClkInitTypeDef RCC_ClkInitStruct = {0};

  /** Configure LSE Drive Capability
  */
  HAL_PWR_EnableBkUpAccess();

  /** Configure the main internal regulator output voltage
  */
  __HAL_RCC_PWR_CLK_ENABLE();
  __HAL_PWR_VOLTAGESCALING_CONFIG(PWR_REGULATOR_VOLTAGE_SCALE1);

  /** Initializes the RCC Oscillators according to the specified parameters
  * in the RCC_OscInitTypeDef structure.
  */
  RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_LSI|RCC_OSCILLATORTYPE_HSE;
  RCC_OscInitStruct.HSEState = RCC_HSE_BYPASS;
  RCC_OscInitStruct.LSIState = RCC_LSI_ON;
  RCC_OscInitStruct.PLL.PLLState = RCC_PLL_ON;
  RCC_OscInitStruct.PLL.PLLSource = RCC_PLLSOURCE_HSE;
  RCC_OscInitStruct.PLL.PLLM = 4;
  RCC_OscInitStruct.PLL.PLLN = 216;
  RCC_OscInitStruct.PLL.PLLP = RCC_PLLP_DIV2;
  RCC_OscInitStruct.PLL.PLLQ = 9;
  if (HAL_RCC_OscConfig(&RCC_OscInitStruct) != HAL_OK)
  {
    Error_Handler();
  }

  /** Activate the Over-Drive mode
  */
  if (HAL_PWREx_EnableOverDrive() != HAL_OK)
  {
    Error_Handler();
  }

  /** Initializes the CPU, AHB and APB buses clocks
  */
  RCC_ClkInitStruct.ClockType = RCC_CLOCKTYPE_HCLK|RCC_CLOCKTYPE_SYSCLK
                              |RCC_CLOCKTYPE_PCLK1|RCC_CLOCKTYPE_PCLK2;
  RCC_ClkInitStruct.SYSCLKSource = RCC_SYSCLKSOURCE_PLLCLK;
  RCC_ClkInitStruct.AHBCLKDivider = RCC_SYSCLK_DIV1;
  RCC_ClkInitStruct.APB1CLKDivider = RCC_HCLK_DIV4;
  RCC_ClkInitStruct.APB2CLKDivider = RCC_HCLK_DIV2;

  if (HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_7) != HAL_OK)
  {
    Error_Handler();
  }
}

It’s a code related to stop mode

void RTC_Init(void)
{
    __HAL_RCC_RTC_ENABLE();

    hrtc.Instance = RTC;
    hrtc.Init.HourFormat = RTC_HOURFORMAT_24;
    hrtc.Init.AsynchPrediv = 127;
    hrtc.Init.SynchPrediv = 255;
    hrtc.Init.OutPut = RTC_OUTPUT_DISABLE;
    hrtc.Init.OutPutPolarity = RTC_OUTPUT_POLARITY_HIGH;
    HAL_RTC_Init(&hrtc);

    // Get current time
    RTC_TimeTypeDef currentTime;
    HAL_RTC_GetTime(&hrtc, &currentTime, RTC_FORMAT_BIN);

    // Calculate alarm time (current time + 50 seconds)
    RTC_AlarmTypeDef sAlarm;
    sAlarm.Alarm = RTC_ALARM_A;
    sAlarm.AlarmTime = currentTime;
    sAlarm.AlarmTime.Seconds += 30;

    // Handle overflow of seconds
    if (sAlarm.AlarmTime.Seconds >= 60)


    {
        sAlarm.AlarmTime.Seconds -= 60;
        sAlarm.AlarmTime.Minutes++;
        if (sAlarm.AlarmTime.Minutes >= 60)
        {
            sAlarm.AlarmTime.Minutes -= 60;
            sAlarm.AlarmTime.Hours++;
            if (sAlarm.AlarmTime.Hours >= 24)
            {
                sAlarm.AlarmTime.Hours -= 24;
            }
        }
    }

    sAlarm.AlarmSubSecondMask = RTC_ALARMSUBSECONDMASK_NONE;
    sAlarm.AlarmMask = RTC_ALARMMASK_DATEWEEKDAY;
    sAlarm.AlarmDateWeekDaySel = RTC_ALARMDATEWEEKDAYSEL_DATE;
    sAlarm.AlarmDateWeekDay = 0;

    HAL_RTC_SetAlarm_IT(&hrtc, &sAlarm, RTC_FORMAT_BIN);
}

void HAL_RTC_AlarmAEventCallback(RTC_HandleTypeDef *hrtc)
{
    // Handle the alarm event
    // Wake up the system or perform necessary actions here
    __HAL_PWR_CLEAR_FLAG(PWR_FLAG_WU);  // Clear wake-up flag if necessary
}


void vStopMode(void)
{

    /* Suspend SysTick */
    HAL_SuspendTick();

    /* Enable Power Peripheral */
    __HAL_RCC_PWR_CLK_ENABLE();

    /* Initialize RTC and set alarm */
    RTC_Init();

    /* STOP Mode */
    //HAL_PWR_EnterSTOPMode(PWR_LOWPOWERREGULATOR_ON, PWR_STOPENTRY_WFI);
    HAL_PWR_EnterSTOPMode(PWR_LOWPOWERREGULATOR_ON, PWR_SLEEPENTRY_WFI);

    /* Resume SysTick When System Wake-up */
    HAL_ResumeTick();

    /* PLL Clock Recovery */
    SystemClock_Config();

    // 전력 안정화를 위해 잠시 대기
    HAL_Delay(100);  // 100ms 정도 대기


}