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diff --git a/Drivers/STM32U0xx_HAL_Driver/Src/stm32u0xx_hal_pwr.c b/Drivers/STM32U0xx_HAL_Driver/Src/stm32u0xx_hal_pwr.c
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+++ b/Drivers/STM32U0xx_HAL_Driver/Src/stm32u0xx_hal_pwr.c
@@ -0,0 +1,681 @@
+/**
+  ******************************************************************************
+  * @file    stm32u0xx_hal_pwr.c
+  * @author  MCD Application Team
+  * @brief   PWR HAL module driver.
+  *          This file provides firmware functions to manage the following
+  *          functionalities of the Power Controller (PWR) peripheral:
+  *           + Initialization/de-initialization functions
+  *           + Peripheral Control functions
+  *
+  ******************************************************************************
+  * @attention
+  *
+  * Copyright (c) 2023 STMicroelectronics.
+  * All rights reserved.
+  *
+  * This software is licensed under terms that can be found in the LICENSE file
+  * in the root directory of this software component.
+  * If no LICENSE file comes with this software, it is provided AS-IS.
+  *
+  ******************************************************************************
+  */
+
+/* Includes ------------------------------------------------------------------*/
+#include "stm32u0xx_hal.h"
+
+/** @addtogroup STM32U0xx_HAL_Driver
+  * @{
+  */
+
+/** @defgroup PWR PWR
+  * @brief PWR HAL module driver
+  * @{
+  */
+
+#ifdef HAL_PWR_MODULE_ENABLED
+
+/* Private typedef -----------------------------------------------------------*/
+/* Private define ------------------------------------------------------------*/
+
+/** @defgroup PWR_Private_Defines PWR Private Defines
+  * @{
+  */
+
+/** @defgroup PWR_PVD_Mode_Mask PWR PVD Mode Mask
+  * @{
+  */
+#define PVD_MODE_IT               0x00010000U   /*!< Mask for interruption yielded by PVD threshold crossing */
+#define PVD_MODE_EVT              0x00020000U   /*!< Mask for event yielded by PVD threshold crossing        */
+#define PVD_RISING_EDGE           0x00000001U   /*!< Mask for rising edge set as PVD trigger                 */
+#define PVD_FALLING_EDGE          0x00000002U   /*!< Mask for falling edge set as PVD trigger                */
+/**
+  * @}
+  */
+
+/** @defgroup PWR_Enable_PWR PWR EWUP All Pins
+  * @{
+  */
+#define PWR_EWUP_Msk              0x0000005FU   /*!< Mask for all wake-up pins */
+/**
+  * @}
+  */
+
+/**
+  * @}
+  */
+
+/* Private macro -------------------------------------------------------------*/
+/* Private variables ---------------------------------------------------------*/
+/* Private function prototypes -----------------------------------------------*/
+/* Exported functions --------------------------------------------------------*/
+
+/** @defgroup PWR_Exported_Functions PWR Exported Functions
+  * @{
+  */
+
+/** @defgroup PWR_Exported_Functions_Group1 Initialization and de-initialization functions
+  *  @brief    Initialization and de-initialization functions
+  *
+@verbatim
+ ===============================================================================
+              ##### Initialization and de-initialization functions #####
+ ===============================================================================
+    [..]
+
+@endverbatim
+  * @{
+  */
+
+/**
+  * @brief Deinitialize the HAL PWR peripheral registers to their default reset values.
+  * @retval None
+  */
+void HAL_PWR_DeInit(void)
+{
+  __HAL_RCC_PWR_FORCE_RESET();
+  __HAL_RCC_PWR_RELEASE_RESET();
+}
+
+/**
+  * @brief Enable access to the backup domain
+  *        (RTC registers, RTC backup data registers).
+  * @note  After reset, the backup domain is protected against
+  *        possible unwanted write accesses.
+  * @note  RTCSEL that sets the RTC clock source selection is in the RTC back-up domain.
+  *        In order to set or modify the RTC clock, the backup domain access must be
+  *        disabled.
+  * @note  LSEON bit that switches on and off the LSE crystal belongs as well to the
+  *        back-up domain.
+  * @retval None
+  */
+void HAL_PWR_EnableBkUpAccess(void)
+{
+  SET_BIT(PWR->CR1, PWR_CR1_DBP);
+}
+
+/**
+  * @brief Disable access to the backup domain
+  *        (RTC registers, RTC backup data registers).
+  * @retval None
+  */
+void HAL_PWR_DisableBkUpAccess(void)
+{
+  CLEAR_BIT(PWR->CR1, PWR_CR1_DBP);
+}
+/**
+  * @}
+  */
+
+
+/** @defgroup PWR_Exported_Functions_Group2 Peripheral Control functions
+  *  @brief Low Power modes configuration functions
+  *
+@verbatim
+
+ ===============================================================================
+                 ##### Peripheral Control functions #####
+ ===============================================================================
+
+     [..]
+     *** PVD configuration ***
+    =========================
+    [..]
+      (+) The PVD is used to monitor the VDD power supply by comparing it to a
+          threshold selected by the PVD Level (PLS[2:0] bits in PWR_CR2 register).
+
+      (+) PVDO flag is available to indicate if VDD/VDDA is higher or lower
+          than the PVD threshold. This event is internally connected to the EXTI
+          line16 and can generate an interrupt if enabled. This is done through
+          __HAL_PVD_EXTI_ENABLE_IT() macro.
+      (+) The PVD is stopped in Standby mode.
+
+
+    *** WakeUp pin configuration ***
+    ================================
+    [..]
+      (+) WakeUp pins are used to wakeup the system from Standby mode or Shutdown mode.
+          The polarity of these pins can be set to configure event detection on high
+          level (rising edge) or low level (falling edge).
+
+
+
+    *** Low Power modes configuration ***
+    =====================================
+    [..]
+      The devices feature 8 low-power modes:
+      (+) Low-power Run mode: core and peripherals are running, main regulator off, low power regulator on.
+      (+) Sleep mode: Cortex-M4 core stopped, peripherals kept running, main and low power regulators on.
+      (+) Low-power Sleep mode: Cortex-M4 core stopped, peripherals kept running, main regulator off,
+          low power regulator on.
+      (+) Stop 0 mode: all clocks are stopped except LSI and LSE, main and low power regulators on.
+      (+) Stop 1 mode: all clocks are stopped except LSI and LSE, main regulator off, low power regulator on.
+      (+) Stop 2 mode: all clocks are stopped except LSI and LSE, main regulator off, low power regulator on,
+          reduced set of waking up IPs compared to Stop 1 mode.
+      (+) Standby mode with SRAM2: all clocks are stopped except LSI and LSE, SRAM2 content preserved,
+          main regulator off, low power regulator on.
+      (+) Standby mode without SRAM2: all clocks are stopped except LSI and LSE, main and low power regulators off.
+      (+) Shutdown mode: all clocks are stopped except LSE, main and low power regulators off.
+
+
+   *** Low-power run mode ***
+   ==========================
+    [..]
+      (+) Entry: (from main run mode)
+        (++) set LPR bit with HAL_PWREx_EnableLowPowerRunMode() API after having decreased the system clock below 2 MHz.
+
+      (+) Exit:
+        (++) clear LPR bit then wait for REGLP bit to be reset with HAL_PWREx_DisableLowPowerRunMode() API. Only
+             then can the system clock frequency be increased above 2 MHz.
+
+
+   *** Sleep mode / Low-power sleep mode ***
+   =========================================
+    [..]
+      (+) Entry:
+          The Sleep mode / Low-power Sleep mode is entered through HAL_PWR_EnterSLEEPMode() API
+          in specifying whether or not the regulator is forced to low-power mode and if exit is interrupt
+          or event-triggered.
+          (++) PWR_MAINREGULATOR_ON: Sleep mode (regulator in main mode).
+          (++) PWR_LOWPOWERREGULATOR_ON: Low-power sleep (regulator in low power mode).
+          In the latter case, the system clock frequency must have been decreased below 2 MHz beforehand.
+          (++) PWR_SLEEPENTRY_WFI: enter SLEEP mode with WFI instruction
+          (++) PWR_SLEEPENTRY_WFE: enter SLEEP mode with WFE instruction
+
+      (+) WFI Exit:
+        (++) Any peripheral interrupt acknowledged by the nested vectored interrupt
+             controller (NVIC) or any wake-up event.
+
+      (+) WFE Exit:
+        (++) Any wake-up event such as an EXTI line configured in event mode.
+
+         [..] When exiting the Low-power sleep mode by issuing an interrupt or a wakeup event,
+             the MCU is in Low-power Run mode.
+
+   *** Stop 0, Stop 1 and Stop 2 modes ***
+   ===============================
+    [..]
+      (+) Entry:
+          The Stop 0, Stop 1 or Stop 2 modes are entered through the following API's:
+          (++) HAL_PWREx_EnterSTOP0Mode() for mode 0 or HAL_PWREx_EnterSTOP1Mode() for mode 1 or
+               for porting reasons HAL_PWR_EnterSTOPMode().
+          (++) HAL_PWREx_EnterSTOP2Mode() for mode 2.
+      (+) Regulator setting (applicable to HAL_PWR_EnterSTOPMode() only):
+          (++) PWR_MAINREGULATOR_ON
+          (++) PWR_LOWPOWERREGULATOR_ON
+      (+) Exit (interrupt or event-triggered, specified when entering STOP mode):
+          (++) PWR_STOPENTRY_WFI: enter Stop mode with WFI instruction
+          (++) PWR_STOPENTRY_WFE: enter Stop mode with WFE instruction
+
+      (+) WFI Exit:
+          (++) Any EXTI Line (Internal or External) configured in Interrupt mode.
+          (++) Some specific communication peripherals (USART, LPUART, I2C) interrupts
+               when programmed in wakeup mode.
+      (+) WFE Exit:
+          (++) Any EXTI Line (Internal or External) configured in Event mode.
+
+       [..]
+          When exiting Stop 0 and Stop 1 modes, the MCU is either in Run mode or in Low-power Run mode
+          depending on the LPR bit setting.
+          When exiting Stop 2 mode, the MCU is in Run mode.
+
+   *** Standby mode ***
+   ====================
+     [..]
+      The Standby mode offers two options:
+      (+) option a) all clocks off except LSI and LSE, RRS bit set (keeps voltage regulator in low power mode).
+        SRAM and registers contents are lost except for the SRAM2 content, the RTC registers, RTC backup registers
+        and Standby circuitry.
+      (+) option b) all clocks off except LSI and LSE, RRS bit cleared (voltage regulator then disabled).
+        SRAM and register contents are lost except for the RTC registers, RTC backup registers
+        and Standby circuitry.
+
+      (++) Entry:
+          (+++) The Standby mode is entered through HAL_PWR_EnterSTANDBYMode() API.
+                SRAM1 and register contents are lost except for registers in the Backup domain and
+                Standby circuitry. SRAM2 content can be preserved if the bit RRS is set in PWR_CR3 register.
+                To enable this feature, the user can resort to HAL_PWREx_EnableSRAM2ContentRetention() API
+                to set RRS bit.
+
+      (++) Exit:
+          (+++) WKUP pin rising edge, RTC alarm or wakeup, tamper event, time-stamp event,
+                external reset in NRST pin, IWDG reset.
+
+      [..]    After waking up from Standby mode, program execution restarts in the same way as after a Reset.
+
+
+    *** Shutdown mode ***
+   ======================
+     [..]
+      In Shutdown mode,
+        voltage regulator is disabled, all clocks are off except LSE, RRS bit is cleared.
+        SRAM and registers contents are lost except for backup domain registers.
+
+      (+) Entry:
+          The Shutdown mode is entered through HAL_PWREx_EnterSHUTDOWNMode() API.
+
+      (+) Exit:
+          (++) WKUP pin rising edge, RTC alarm or wakeup, tamper event, time-stamp event,
+               external reset in NRST pin.
+
+         [..] After waking up from Shutdown mode, program execution restarts in the same way as after a Reset.
+
+
+   *** Auto-wakeup (AWU) from low-power mode ***
+   =============================================
+    [..]
+      The MCU can be woken up from low-power mode by an RTC Alarm event, an RTC
+      Wakeup event, a tamper event or a time-stamp event, without depending on
+      an external interrupt (Auto-wakeup mode).
+
+      (+) RTC auto-wakeup (AWU) from the Stop, Standby and Shutdown modes
+
+
+        (++) To wake up from the Stop mode with an RTC alarm event, it is necessary to
+             configure the RTC to generate the RTC alarm using the HAL_RTC_SetAlarm_IT() function.
+
+        (++) To wake up from the Stop mode with an RTC Tamper or time stamp event, it
+             is necessary to configure the RTC to detect the tamper or time stamp event using the
+             HAL_RTCEx_SetTimeStamp_IT() or HAL_RTCEx_SetTamper_IT() functions.
+
+        (++) To wake up from the Stop mode with an RTC WakeUp event, it is necessary to
+              configure the RTC to generate the RTC WakeUp event using the HAL_RTCEx_SetWakeUpTimer_IT() function.
+
+@endverbatim
+  * @{
+  */
+
+/**
+  * @brief Configure the voltage threshold detected by the Power Voltage Detector (PVD).
+  * @param sConfigPVD: pointer to a PWR_PVDTypeDef structure that contains the PVD
+  *        configuration information.
+  * @note Refer to the electrical characteristics of your device datasheet for
+  *         more details about the voltage thresholds corresponding to each
+  *         detection level.
+  * @retval None
+  */
+HAL_StatusTypeDef HAL_PWR_ConfigPVD(const PWR_PVDTypeDef *sConfigPVD)
+{
+  /* Check the parameters */
+  assert_param(IS_PWR_PVD_LEVEL(sConfigPVD->PVDLevel));
+  assert_param(IS_PWR_PVD_MODE(sConfigPVD->Mode));
+
+  /* Set PLS bits according to PVDLevel value */
+  MODIFY_REG(PWR->CR2, PWR_CR2_PLS, sConfigPVD->PVDLevel);
+
+  /* Clear any previous config. Keep it clear if no event or IT mode is selected */
+  __HAL_PWR_PVD_EXTI_DISABLE_EVENT();
+  __HAL_PWR_PVD_EXTI_DISABLE_IT();
+  __HAL_PWR_PVD_EXTI_DISABLE_FALLING_EDGE();
+  __HAL_PWR_PVD_EXTI_DISABLE_RISING_EDGE();
+
+  /* Configure interrupt mode */
+  if ((sConfigPVD->Mode & PVD_MODE_IT) == PVD_MODE_IT)
+  {
+    __HAL_PWR_PVD_EXTI_ENABLE_IT();
+  }
+
+  /* Configure event mode */
+  if ((sConfigPVD->Mode & PVD_MODE_EVT) == PVD_MODE_EVT)
+  {
+    __HAL_PWR_PVD_EXTI_ENABLE_EVENT();
+  }
+
+  /* Configure the edge */
+  if ((sConfigPVD->Mode & PVD_RISING_EDGE) == PVD_RISING_EDGE)
+  {
+    __HAL_PWR_PVD_EXTI_ENABLE_RISING_EDGE();
+  }
+
+  if ((sConfigPVD->Mode & PVD_FALLING_EDGE) == PVD_FALLING_EDGE)
+  {
+    __HAL_PWR_PVD_EXTI_ENABLE_FALLING_EDGE();
+  }
+
+  return HAL_OK;
+}
+
+/**
+  * @brief Enable the Power Voltage Detector (PVD).
+  * @retval None
+  */
+void HAL_PWR_EnablePVD(void)
+{
+  SET_BIT(PWR->CR2, PWR_CR2_PVDE);
+}
+
+/**
+  * @brief Disable the Power Voltage Detector (PVD).
+  * @retval None
+  */
+void HAL_PWR_DisablePVD(void)
+{
+  CLEAR_BIT(PWR->CR2, PWR_CR2_PVDE);
+}
+
+/**
+  * @brief Enable the WakeUp PINx functionality.
+  * @param WakeUpPinPolarity: Specifies which Wake-Up pin to enable.
+  *         This parameter can be one of the following legacy values which set the default polarity
+  *         i.e. detection on high level (rising edge):
+  *           @arg @ref PWR_WAKEUP_PIN1, PWR_WAKEUP_PIN2, PWR_WAKEUP_PIN3, PWR_WAKEUP_PIN4, PWR_WAKEUP_PIN5
+  *
+  *         or one of the following value where the user can explicitly specify the enabled pin and
+  *         the chosen polarity:
+  *           @arg @ref PWR_WAKEUP_PIN1_HIGH or PWR_WAKEUP_PIN1_LOW
+  *           @arg @ref PWR_WAKEUP_PIN2_HIGH or PWR_WAKEUP_PIN2_LOW
+  *           @arg @ref PWR_WAKEUP_PIN3_HIGH or PWR_WAKEUP_PIN3_LOW
+  *           @arg @ref PWR_WAKEUP_PIN4_HIGH or PWR_WAKEUP_PIN4_LOW
+  *           @arg @ref PWR_WAKEUP_PIN5_HIGH or PWR_WAKEUP_PIN5_LOW
+  * @note  PWR_WAKEUP_PINx and PWR_WAKEUP_PINx_HIGH are equivalent.
+  * @retval None
+  */
+void HAL_PWR_EnableWakeUpPin(uint32_t WakeUpPinPolarity)
+{
+  assert_param(IS_PWR_WAKEUP_PIN(WakeUpPinPolarity));
+
+  /* Specifies the Wake-Up pin polarity for the event detection
+    (rising or falling edge) */
+  MODIFY_REG(PWR->CR4, (PWR_EWUP_Msk & WakeUpPinPolarity), (WakeUpPinPolarity >> PWR_WUP_POLARITY_SHIFT));
+
+  /* Enable wake-up pin */
+  SET_BIT(PWR->CR3, (PWR_EWUP_Msk & WakeUpPinPolarity));
+}
+
+/**
+  * @brief Disable the WakeUp PINx functionality.
+  * @param WakeUpPinx: Specifies the Power Wake-Up pin to disable.
+  *         This parameter can be one of the following values:
+  *           @arg @ref PWR_WAKEUP_PIN1, PWR_WAKEUP_PIN2, PWR_WAKEUP_PIN3, PWR_WAKEUP_PIN4, PWR_WAKEUP_PIN5
+  * @retval None
+  */
+void HAL_PWR_DisableWakeUpPin(uint32_t WakeUpPinx)
+{
+  assert_param(IS_PWR_WAKEUP_PIN(WakeUpPinx));
+
+  CLEAR_BIT(PWR->CR3, (PWR_EWUP_Msk & WakeUpPinx));
+}
+
+/**
+  * @brief Enter Sleep or Low-power Sleep mode.
+  * @note  In Sleep/Low-power Sleep mode, all I/O pins keep the same state as in Run mode.
+  * @param Regulator: Specifies the regulator state in Sleep/Low-power Sleep mode.
+  *          This parameter can be one of the following values:
+  *            @arg @ref PWR_MAINREGULATOR_ON Sleep mode (regulator in main mode)
+  *            @arg @ref PWR_LOWPOWERREGULATOR_ON Low-power Sleep mode (regulator in low-power mode)
+  * @note  Low-power Sleep mode is entered from Low-power Run mode. Therefore, if not yet
+  *        in Low-power Run mode before calling HAL_PWR_EnterSLEEPMode() with Regulator set
+  *        to PWR_LOWPOWERREGULATOR_ON, the user can optionally configure the
+  *        Flash in power-down monde in setting the SLEEP_PD bit in FLASH_ACR register.
+  *        Additionally, the clock frequency must be reduced below 2 MHz.
+  *        Setting SLEEP_PD in FLASH_ACR then appropriately reducing the clock frequency must
+  *        be done before calling HAL_PWR_EnterSLEEPMode() API.
+  * @note  When exiting Low-power Sleep mode, the MCU is in Low-power Run mode. To move in
+  *        Run mode, the user must resort to HAL_PWREx_DisableLowPowerRunMode() API.
+  * @param SLEEPEntry: Specifies if Sleep mode is entered with WFI or WFE instruction.
+  *           This parameter can be one of the following values:
+  *            @arg @ref PWR_SLEEPENTRY_WFI enter Sleep or Low-power Sleep mode with WFI instruction
+  *            @arg @ref PWR_SLEEPENTRY_WFE enter Sleep or Low-power Sleep mode with WFE instruction
+  * @note  When WFI entry is used, tick interrupt have to be disabled if not desired as
+  *        the interrupt wake up source.
+  * @retval None
+  */
+void HAL_PWR_EnterSLEEPMode(uint32_t Regulator, uint8_t SLEEPEntry)
+{
+  /* Check the parameters */
+  assert_param(IS_PWR_REGULATOR(Regulator));
+  assert_param(IS_PWR_SLEEP_ENTRY(SLEEPEntry));
+
+  /* Set Regulator parameter */
+  if (Regulator == PWR_MAINREGULATOR_ON)
+  {
+    /* If in low-power run mode at this point, exit it */
+    if (HAL_IS_BIT_SET(PWR->SR2, PWR_SR2_REGLPF))
+    {
+      if (HAL_PWREx_DisableLowPowerRunMode() != HAL_OK)
+      {
+        return ;
+      }
+    }
+    /* Regulator now in main mode. */
+  }
+  else
+  {
+    /* If in run mode, first move to low-power run mode.
+       The system clock frequency must be below 2 MHz at this point. */
+    if (HAL_IS_BIT_SET(PWR->SR2, PWR_SR2_REGLPF) == RESET)
+    {
+      HAL_PWREx_EnableLowPowerRunMode();
+    }
+  }
+
+  /* Clear SLEEPDEEP bit of Cortex System Control Register */
+  CLEAR_BIT(SCB->SCR, ((uint32_t)SCB_SCR_SLEEPDEEP_Msk));
+
+  /* Select SLEEP mode entry -------------------------------------------------*/
+  if (SLEEPEntry == PWR_SLEEPENTRY_WFI)
+  {
+    /* Request Wait For Interrupt */
+    __WFI();
+  }
+  else
+  {
+    /* Request Wait For Event */
+    __SEV();
+    __WFE();
+    __WFE();
+  }
+}
+
+/**
+  * @brief Enter Stop 0 mode
+  * @note  This API is named HAL_PWR_EnterSTOPMode to ensure compatibility with legacy code running
+  *        on devices where only "Stop mode" is mentioned with main or low power regulator ON.
+  * @note  In Stop mode, all I/O pins keep the same state as in Run mode.
+  * @note  All clocks in the VCORE domain are stopped; the PLL, the MSI,
+  *        the HSI and the HSE oscillators are disabled. Some peripherals with the wakeup capability
+  *        (I2Cx, USARTx and LPUART) can switch on the HSI to receive a frame, and switch off the HSI
+  *        after receiving the frame if it is not a wakeup frame. In this case, the HSI clock is propagated
+  *        only to the peripheral requesting it.
+  *        SRAM1, SRAM2 and register contents are preserved.
+  *        The BOR is available.
+  *        The voltage regulator can be configured either in normal (Stop 0) or low-power mode (Stop 1).
+  * @note  When exiting Stop 0 or Stop 1 mode by issuing an interrupt or a wakeup event,
+  *         the HSI RC oscillator is selected as system clock if STOPWUCK bit in RCC_CFGR register
+  *         is set; the MSI oscillator is selected if STOPWUCK is cleared.
+  * @note  When the voltage regulator operates in low power mode (Stop 1), an additional
+  *         startup delay is incurred when waking up.
+  *         By keeping the internal regulator ON during Stop mode (Stop 0), the consumption
+  *         is higher although the startup time is reduced.
+  * @param Regulator: Specifies the regulator state in Stop mode.
+  *          This parameter can be one of the following values:
+  *            @arg @ref PWR_MAINREGULATOR_ON  Stop 0 mode (main regulator ON)
+  *            @arg @ref PWR_LOWPOWERREGULATOR_ON  Stop 1 mode (low power regulator ON)
+  * @param STOPEntry: Specifies Stop 0 or Stop 1 mode is entered with WFI or WFE instruction.
+  *          This parameter can be one of the following values:
+  *            @arg @ref PWR_STOPENTRY_WFI  Enter Stop 0 or Stop 1 mode with WFI instruction.
+  *            @arg @ref PWR_STOPENTRY_WFE  Enter Stop 0 or Stop 1 mode with WFE instruction.
+  * @retval None
+  */
+void HAL_PWR_EnterSTOPMode(uint32_t Regulator, uint8_t STOPEntry)
+{
+
+  /* Check the parameters */
+  assert_param(IS_PWR_REGULATOR(Regulator));
+  assert_param(IS_PWR_STOP_ENTRY(STOPEntry));
+  /* Select the regulator state in STOP mode */
+  MODIFY_REG(PWR->CR1, PWR_CR1_LPR, Regulator);
+  /* Stop 0 mode with Main Regulator */
+  MODIFY_REG(PWR->CR1, PWR_CR1_LPMS, 0U);
+  /* Set SLEEPDEEP bit of Cortex System Control Register */
+  SET_BIT(SCB->SCR, ((uint32_t)SCB_SCR_SLEEPDEEP_Msk));
+  /* Select Stop mode entry --------------------------------------------------*/
+  if (STOPEntry == PWR_STOPENTRY_WFI)
+  {
+    /* Request Wait For Interrupt */
+    __WFI();
+  }
+  else
+  {
+    /* Request Wait For Event */
+    __SEV();
+    __WFE();
+    __WFE();
+  }
+  /* Reset SLEEPDEEP bit of Cortex System Control Register */
+  CLEAR_BIT(SCB->SCR, ((uint32_t)SCB_SCR_SLEEPDEEP_Msk));
+}
+
+/**
+  * @brief Enter Standby mode.
+  * @note  In Standby mode, the PLL, the HSI, the MSI and the HSE oscillators are switched
+  *        off. The voltage regulator is disabled, except when SRAM2 content is preserved
+  *        in which case the regulator is in low-power mode.
+  *        SRAM1 and register contents are lost except for registers in the Backup domain and
+  *        Standby circuitry. SRAM2 content can be preserved if the bit RRS is set in PWR_CR3 register.
+  *        To enable this feature, the user can resort to HAL_PWREx_EnableSRAM2ContentRetention() API
+  *        to set RRS bit.
+  *        The BOR is available.
+  * @note  The I/Os can be configured either with a pull-up or pull-down or can be kept in analog state.
+  *        HAL_PWREx_EnableGPIOPullUp() and HAL_PWREx_EnableGPIOPullDown() respectively enable Pull Up and
+  *        Pull Down state, HAL_PWREx_DisableGPIOPullUp() and HAL_PWREx_DisableGPIOPullDown() disable the
+  *        same.
+  *        These states are effective in Standby mode only if APC bit is set through
+  *        HAL_PWREx_EnablePullUpPullDownConfig() API.
+  * @retval None
+  */
+void HAL_PWR_EnterSTANDBYMode(void)
+{
+  /* Set Stand-by mode */
+  MODIFY_REG(PWR->CR1, PWR_CR1_LPMS, (PWR_CR1_LPMS_1 | PWR_CR1_LPMS_0));
+
+  /* Set SLEEPDEEP bit of Cortex System Control Register */
+  SET_BIT(SCB->SCR, ((uint32_t)SCB_SCR_SLEEPDEEP_Msk));
+
+  /* Request Wait For Interrupt */
+  __WFI();
+}
+
+/**
+  * @brief Enter Shutdown mode.
+  * @note  In Shutdown mode, the PLL, the HSI, the MSI, the LSI and the HSE oscillators are switched
+  *        off. The voltage regulator is disabled and Vcore domain is powered off.
+  *        SRAM1, SRAM2 and registers contents are lost except for registers in the Backup domain.
+  *        The BOR is not available.
+  * @note  The I/Os can be configured either with a pull-up or pull-down or can be kept in analog state.
+  * @retval None
+  */
+void HAL_PWR_EnterSHUTDOWNMode(void)
+{
+
+  /* Set Shutdown mode */
+  MODIFY_REG(PWR->CR1, PWR_CR1_LPMS, PWR_CR1_LPMS_2);
+
+
+  /* Set SLEEPDEEP bit of Cortex System Control Register */
+  SET_BIT(SCB->SCR, ((uint32_t)SCB_SCR_SLEEPDEEP_Msk));
+
+  /* This option is used to ensure that store operations are completed */
+#if defined ( __CC_ARM)
+  __force_stores();
+#endif /* __CC_ARM */
+  /* Request Wait For Interrupt */
+  __WFI();
+}
+
+/**
+  * @brief Indicate Sleep-On-Exit when returning from Handler mode to Thread mode.
+  * @note Set SLEEPONEXIT bit of SCR register. When this bit is set, the processor
+  *       re-enters SLEEP mode when an interruption handling is over.
+  *       Setting this bit is useful when the processor is expected to run only on
+  *       interruptions handling.
+  * @retval None
+  */
+void HAL_PWR_EnableSleepOnExit(void)
+{
+  /* Set SLEEPONEXIT bit of Cortex System Control Register */
+  SET_BIT(SCB->SCR, ((uint32_t)SCB_SCR_SLEEPONEXIT_Msk));
+}
+
+/**
+  * @brief Disable Sleep-On-Exit feature when returning from Handler mode to Thread mode.
+  * @note Clear SLEEPONEXIT bit of SCR register. When this bit is set, the processor
+  *       re-enters SLEEP mode when an interruption handling is over.
+  * @retval None
+  */
+void HAL_PWR_DisableSleepOnExit(void)
+{
+  /* Clear SLEEPONEXIT bit of Cortex System Control Register */
+  CLEAR_BIT(SCB->SCR, ((uint32_t)SCB_SCR_SLEEPONEXIT_Msk));
+}
+
+/**
+  * @brief Enable CORTEX M4 SEVONPEND bit.
+  * @note Set SEVONPEND bit of SCR register. When this bit is set, this causes
+  *       WFE to wake up when an interrupt moves from inactive to pended.
+  * @retval None
+  */
+void HAL_PWR_EnableSEVOnPend(void)
+{
+  /* Set SEVONPEND bit of Cortex System Control Register */
+  SET_BIT(SCB->SCR, ((uint32_t)SCB_SCR_SEVONPEND_Msk));
+}
+
+/**
+  * @brief Disable CORTEX M4 SEVONPEND bit.
+  * @note Clear SEVONPEND bit of SCR register. When this bit is set, this causes
+  *       WFE to wake up when an interrupt moves from inactive to pended.
+  * @retval None
+  */
+void HAL_PWR_DisableSEVOnPend(void)
+{
+  /* Clear SEVONPEND bit of Cortex System Control Register */
+  CLEAR_BIT(SCB->SCR, ((uint32_t)SCB_SCR_SEVONPEND_Msk));
+}
+
+/**
+  * @brief PWR PVD interrupt callback
+  * @retval None
+  */
+__weak void HAL_PWR_PVDCallback(void)
+{
+  /* NOTE : This function should not be modified; when the callback is needed,
+            the HAL_PWR_PVDCallback can be implemented in the user file
+   */
+}
+/**
+  * @}
+  */
+
+/**
+  * @}
+  */
+
+#endif /* HAL_PWR_MODULE_ENABLED */
+/**
+  * @}
+  */
+
+/**
+  * @}
+  */