Diff: targets/cmsis/TARGET_STM/TARGET_STM32F1/stm32f1xx_hal_pwr.c

Revision:

0:9b334a45a8ff

Child:

124:6a4a5b7d7324

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/targets/cmsis/TARGET_STM/TARGET_STM32F1/stm32f1xx_hal_pwr.c	Thu Oct 01 15:25:22 2015 +0300
@@ -0,0 +1,636 @@
+/**
+  ******************************************************************************
+  * @file    stm32f1xx_hal_pwr.c
+  * @author  MCD Application Team
+  * @version V1.0.0
+  * @date    15-December-2014
+  * @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
+  *
+  * <h2><center>&copy; COPYRIGHT(c) 2014 STMicroelectronics</center></h2>
+  *
+  * Redistribution and use in source and binary forms, with or without modification,
+  * are permitted provided that the following conditions are met:
+  *   1. Redistributions of source code must retain the above copyright notice,
+  *      this list of conditions and the following disclaimer.
+  *   2. Redistributions in binary form must reproduce the above copyright notice,
+  *      this list of conditions and the following disclaimer in the documentation
+  *      and/or other materials provided with the distribution.
+  *   3. Neither the name of STMicroelectronics nor the names of its contributors
+  *      may be used to endorse or promote products derived from this software
+  *      without specific prior written permission.
+  *
+  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+  * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
+  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+  * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+  * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+  * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+  *
+  ******************************************************************************
+  */
+
+/* Includes ------------------------------------------------------------------*/
+#include "stm32f1xx_hal.h"
+
+/** @addtogroup STM32F1xx_HAL_Driver
+  * @{
+  */
+
+/** @defgroup PWR PWR
+  * @brief    PWR HAL module driver
+  * @{
+  */
+
+#ifdef HAL_PWR_MODULE_ENABLED
+
+/* Private typedef -----------------------------------------------------------*/
+/* Private define ------------------------------------------------------------*/
+
+/** @defgroup PWR_Private_Constants PWR Private Constants
+  * @{
+  */
+  
+/** @defgroup PWR_PVD_Mode_Mask PWR PVD Mode Mask
+  * @{
+  */ 
+#define PVD_MODE_IT               ((uint32_t)0x00010000)
+#define PVD_MODE_EVT              ((uint32_t)0x00020000)
+#define PVD_RISING_EDGE           ((uint32_t)0x00000001)
+#define PVD_FALLING_EDGE          ((uint32_t)0x00000002)
+/**
+  * @}
+  */
+
+
+/** @defgroup PWR_register_alias_address PWR Register alias address
+  * @{
+  */ 
+/* ------------- PWR registers bit address in the alias region ---------------*/
+#define PWR_OFFSET               (PWR_BASE - PERIPH_BASE)
+#define PWR_CR_OFFSET            0x00
+#define PWR_CSR_OFFSET           0x04
+#define PWR_CR_OFFSET_BB         (PWR_OFFSET + PWR_CR_OFFSET)
+#define PWR_CSR_OFFSET_BB        (PWR_OFFSET + PWR_CSR_OFFSET)
+/**
+  * @}
+  */
+   
+/** @defgroup PWR_CR_register_alias PWR CR Register alias address
+  * @{
+  */  
+/* --- CR Register ---*/
+/* Alias word address of LPSDSR bit */
+#define LPSDSR_BIT_NUMBER        POSITION_VAL(PWR_CR_LPDS)
+#define CR_LPSDSR_BB             ((uint32_t)(PERIPH_BB_BASE + (PWR_CR_OFFSET_BB * 32) + (LPSDSR_BIT_NUMBER * 4)))
+
+/* Alias word address of DBP bit */
+#define DBP_BIT_NUMBER            POSITION_VAL(PWR_CR_DBP)
+#define CR_DBP_BB                ((uint32_t)(PERIPH_BB_BASE + (PWR_CR_OFFSET_BB * 32) + (DBP_BIT_NUMBER * 4)))
+
+/* Alias word address of PVDE bit */
+#define PVDE_BIT_NUMBER           POSITION_VAL(PWR_CR_PVDE)
+#define CR_PVDE_BB               ((uint32_t)(PERIPH_BB_BASE + (PWR_CR_OFFSET_BB * 32) + (PVDE_BIT_NUMBER * 4)))
+
+/**
+  * @}
+  */
+
+/** @defgroup PWR_CSR_register_alias PWR CSR Register alias address
+  * @{
+  */
+
+/* --- CSR Register ---*/
+/* Alias word address of EWUP1 bit */
+#define CSR_EWUP_BB(VAL)         ((uint32_t)(PERIPH_BB_BASE + (PWR_CSR_OFFSET_BB * 32) + (POSITION_VAL(VAL) * 4)))
+/**
+  * @}
+  */
+  
+/**
+  * @}
+  */
+
+/* Private variables ---------------------------------------------------------*/
+/* Private function prototypes -----------------------------------------------*/
+/** @defgroup PWR_Private_Functions PWR Private Functions
+ * brief   WFE cortex command overloaded for HAL_PWR_EnterSTOPMode usage only (see Workaround section)
+ * @{
+ */
+static void PWR_OverloadWfe(void);
+
+/* Private functions ---------------------------------------------------------*/
+__NOINLINE
+static void PWR_OverloadWfe(void)
+{
+  __asm volatile( "wfe" );
+  __asm volatile( "nop" );
+}
+
+/**
+  * @}
+  */
+
+
+/** @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 #####
+ ===============================================================================
+    [..]
+      After reset, the backup domain (RTC registers, RTC backup data
+      registers) is protected against possible unwanted
+      write accesses.
+      To enable access to the RTC Domain and RTC registers, proceed as follows:
+        (+) Enable the Power Controller (PWR) APB1 interface clock using the
+            __HAL_RCC_PWR_CLK_ENABLE() macro.
+        (+) Enable access to RTC domain using the HAL_PWR_EnableBkUpAccess() function.
+
+@endverbatim
+  * @{
+  */
+
+/**
+  * @brief  Deinitializes the 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  Enables access to the backup domain (RTC registers, RTC
+  *         backup data registers ).
+  * @note   If the HSE divided by 128 is used as the RTC clock, the
+  *         Backup Domain Access should be kept enabled.
+  * @retval None
+  */
+void HAL_PWR_EnableBkUpAccess(void)
+{
+  /* Enable access to RTC and backup registers */
+  *(__IO uint32_t *) CR_DBP_BB = (uint32_t)ENABLE;
+}
+
+/**
+  * @brief  Disables access to the backup domain (RTC registers, RTC
+  *         backup data registers).
+  * @note   If the HSE divided by 128 is used as the RTC clock, the
+  *         Backup Domain Access should be kept enabled.
+  * @retval None
+  */
+void HAL_PWR_DisableBkUpAccess(void)
+{
+  /* Disable access to RTC and backup registers */
+  *(__IO uint32_t *) CR_DBP_BB = (uint32_t)DISABLE;
+}
+
+/**
+  * @}
+  */
+
+/** @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 the PWR_CR).
+
+      (+) A 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 pin is used to wake up the system from Standby mode. This pin is
+          forced in input pull-down configuration and is active on rising edges.
+      (+) There is one WakeUp pin:
+          WakeUp Pin 1 on PA.00.
+
+    [..]
+
+    *** Low Power modes configuration ***
+    =====================================
+     [..]
+      The device features 3 low-power modes:
+      (+) Sleep mode: CPU clock off, all peripherals including Cortex-M3 core peripherals like 
+                      NVIC, SysTick, etc. are kept running
+      (+) Stop mode: All clocks are stopped
+      (+) Standby mode: 1.8V domain powered off
+  
+  
+   *** Sleep mode ***
+   ==================
+    [..]
+      (+) Entry:
+          The Sleep mode is entered by using the HAL_PWR_EnterSLEEPMode(PWR_MAINREGULATOR_ON, PWR_SLEEPENTRY_WFx)
+              functions with
+          (++) PWR_SLEEPENTRY_WFI: enter SLEEP mode with WFI instruction
+          (++) PWR_SLEEPENTRY_WFE: enter SLEEP mode with WFE instruction
+     
+      (+) Exit:
+        (++) WFI entry mode, Any peripheral interrupt acknowledged by the nested vectored interrupt
+             controller (NVIC) can wake up the device from Sleep mode.
+        (++) WFE entry mode, Any wakeup event can wake up the device from Sleep mode.
+           (+++) Any peripheral interrupt w/o NVIC configuration & SEVONPEND bit set in the Cortex (HAL_PWR_EnableSEVOnPend)
+           (+++) Any EXTI Line (Internal or External) configured in Event mode
+
+   *** Stop mode ***
+   =================
+    [..]
+      The Stop mode is based on the Cortex-M3 deepsleep mode combined with peripheral
+      clock gating. The voltage regulator can be configured either in normal or low-power mode.
+      In Stop mode, all clocks in the 1.8 V domain are stopped, the PLL, the HSI and the HSE RC 
+      oscillators are disabled. SRAM and register contents are preserved.
+      In Stop mode, all I/O pins keep the same state as in Run mode.
+
+      (+) Entry:
+           The Stop mode is entered using the HAL_PWR_EnterSTOPMode(PWR_REGULATOR_VALUE, PWR_SLEEPENTRY_WFx )
+             function with:
+          (++) PWR_REGULATOR_VALUE= PWR_MAINREGULATOR_ON: Main regulator ON.
+          (++) PWR_REGULATOR_VALUE= PWR_LOWPOWERREGULATOR_ON: Low Power regulator ON.
+          (++) PWR_SLEEPENTRY_WFx= PWR_SLEEPENTRY_WFI: enter STOP mode with WFI instruction
+          (++) PWR_SLEEPENTRY_WFx= PWR_SLEEPENTRY_WFE: enter STOP mode with WFE instruction
+      (+) Exit:
+          (++) WFI entry mode, Any EXTI Line (Internal or External) configured in Interrupt mode with NVIC configured
+          (++) WFE entry mode, Any EXTI Line (Internal or External) configured in Event mode.
+
+   *** Standby mode ***
+   ====================
+     [..]
+      The Standby mode allows to achieve the lowest power consumption. It is based on the
+      Cortex-M3 deepsleep mode, with the voltage regulator disabled. The 1.8 V domain is 
+      consequently powered off. The PLL, the HSI oscillator and the HSE oscillator are also 
+      switched off. SRAM and register contents are lost except for registers in the Backup domain 
+      and Standby circuitry
+      
+      (+) Entry:
+        (++) The Standby mode is entered using the HAL_PWR_EnterSTANDBYMode() function.
+      (+) Exit:
+        (++) WKUP pin rising edge, RTC alarm event rising edge, external Reset in 
+             NRSTpin, IWDG Reset
+
+   *** Auto-wakeup (AWU) from low-power mode ***
+       =============================================
+       [..]
+        
+       (+) The MCU can be woken up from low-power mode by an RTC Alarm event, 
+           without depending on an external interrupt (Auto-wakeup mode).
+   
+       (+) RTC auto-wakeup (AWU) from the Stop and Standby 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.
+
+   *** PWR Workarounds linked to Silicon Limitation ***
+       ====================================================
+       [..]
+       Below the list of all silicon limitations known on STM32F1xx prouct.
+
+       (#)Workarounds Implemented inside PWR HAL Driver
+          (##)Debugging Stop mode with WFE entry - overloaded the WFE by an internal function    
+        
+@endverbatim
+  * @{
+  */
+
+/**
+  * @brief  Configures the voltage threshold detected by the Power Voltage Detector(PVD).
+  * @param  sConfigPVD: pointer to an PWR_PVDTypeDef structure that contains the configuration
+  *         information for the PVD.
+  * @note   Refer to the electrical characteristics of your device datasheet for
+  *         more details about the voltage threshold corresponding to each
+  *         detection level.
+  * @retval None
+  */
+void HAL_PWR_ConfigPVD(PWR_PVDTypeDef *sConfigPVD)
+{
+  /* Check the parameters */
+  assert_param(IS_PWR_PVD_LEVEL(sConfigPVD->PVDLevel));
+  assert_param(IS_PWR_PVD_MODE(sConfigPVD->Mode));
+
+  /* Set PLS[7:5] bits according to PVDLevel value */
+  MODIFY_REG(PWR->CR, PWR_CR_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();
+  }
+}
+
+/**
+  * @brief  Enables the Power Voltage Detector(PVD).
+  * @retval None
+  */
+void HAL_PWR_EnablePVD(void)
+{
+  /* Enable the power voltage detector */
+  *(__IO uint32_t *) CR_PVDE_BB = (uint32_t)ENABLE;
+}
+
+/**
+  * @brief  Disables the Power Voltage Detector(PVD).
+  * @retval None
+  */
+void HAL_PWR_DisablePVD(void)
+{
+  /* Disable the power voltage detector */
+  *(__IO uint32_t *) CR_PVDE_BB = (uint32_t)DISABLE;
+}
+
+/**
+  * @brief Enables the WakeUp PINx functionality.
+  * @param WakeUpPinx: Specifies the Power Wake-Up pin to enable.
+  *        This parameter can be one of the following values:
+  *           @arg PWR_WAKEUP_PIN1
+  * @retval None
+  */
+void HAL_PWR_EnableWakeUpPin(uint32_t WakeUpPinx)
+{
+  /* Check the parameter */
+  assert_param(IS_PWR_WAKEUP_PIN(WakeUpPinx));
+  /* Enable the EWUPx pin */
+  *(__IO uint32_t *) CSR_EWUP_BB(WakeUpPinx) = (uint32_t)ENABLE;
+}
+
+/**
+  * @brief Disables the WakeUp PINx functionality.
+  * @param WakeUpPinx: Specifies the Power Wake-Up pin to disable.
+  *        This parameter can be one of the following values:
+  *           @arg PWR_WAKEUP_PIN1
+  * @retval None
+  */
+void HAL_PWR_DisableWakeUpPin(uint32_t WakeUpPinx)
+{
+  /* Check the parameter */
+  assert_param(IS_PWR_WAKEUP_PIN(WakeUpPinx));
+  /* Disable the EWUPx pin */
+  *(__IO uint32_t *) CSR_EWUP_BB(WakeUpPinx) = (uint32_t)DISABLE;
+}
+
+/**
+  * @brief Enters Sleep mode.
+  * @note  In Sleep mode, all I/O pins keep the same state as in Run mode.
+  * @param Regulator: Regulator state as no effect in SLEEP mode -  allows to support portability from legacy software
+  * @param SLEEPEntry: Specifies if SLEEP mode is entered with WFI or WFE instruction.
+  *           When WFI entry is used, tick interrupt have to be disabled if not desired as 
+  *           the interrupt wake up source.
+  *           This parameter can be one of the following values:
+  *            @arg PWR_SLEEPENTRY_WFI: enter SLEEP mode with WFI instruction
+  *            @arg PWR_SLEEPENTRY_WFE: enter SLEEP mode with WFE instruction
+  * @retval None
+  */
+void HAL_PWR_EnterSLEEPMode(uint32_t Regulator, uint8_t SLEEPEntry)
+{
+  /* Check the parameters */
+  /* No check on Regulator because parameter not used in SLEEP mode */
+  assert_param(IS_PWR_SLEEP_ENTRY(SLEEPEntry));
+
+  /* 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 Enters Stop mode. 
+  * @note  In Stop mode, all I/O pins keep the same state as in Run mode.
+  * @note  When exiting Stop mode by using an interrupt or a wakeup event,
+  *        HSI RC oscillator is selected as system clock.
+  * @note  When the voltage regulator operates in low power mode, an additional
+  *         startup delay is incurred when waking up from Stop mode. 
+  *         By keeping the internal regulator ON during Stop mode, 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 PWR_MAINREGULATOR_ON: Stop mode with regulator ON
+  *            @arg PWR_LOWPOWERREGULATOR_ON: Stop mode with low power regulator ON
+  * @param STOPEntry: Specifies if Stop mode in entered with WFI or WFE instruction.
+  *          This parameter can be one of the following values:
+  *            @arg PWR_STOPENTRY_WFI: Enter Stop mode with WFI instruction
+  *            @arg PWR_STOPENTRY_WFE: Enter Stop 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));
+
+  /* Clear PDDS bit in PWR register to specify entering in STOP mode when CPU enter in Deepsleep */ 
+  CLEAR_BIT(PWR->CR,  PWR_CR_PDDS);
+
+  /* Select the voltage regulator mode by setting LPDS bit in PWR register according to Regulator parameter value */
+  MODIFY_REG(PWR->CR, PWR_CR_LPDS, Regulator);
+
+  /* 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();
+    PWR_OverloadWfe(); /* WFE redefine locally */
+    PWR_OverloadWfe(); /* WFE redefine locally */
+  }
+  /* Reset SLEEPDEEP bit of Cortex System Control Register */
+  CLEAR_BIT(SCB->SCR, ((uint32_t)SCB_SCR_SLEEPDEEP_Msk));
+}
+
+/**
+  * @brief Enters Standby mode.
+  * @note  In Standby mode, all I/O pins are high impedance except for:
+  *          - Reset pad (still available) 
+  *          - TAMPER pin if configured for tamper or calibration out.
+  *          - WKUP pin (PA0) if enabled.
+  * @retval None
+  */
+void HAL_PWR_EnterSTANDBYMode(void)
+{
+  /* Select Standby mode */
+  SET_BIT(PWR->CR, PWR_CR_PDDS);
+
+  /* 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
+  /* Request Wait For Interrupt */
+  __WFI();
+}
+
+
+/**
+  * @brief Indicates 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 Disables Sleep-On-Exit feature when returning from Handler mode to Thread mode. 
+  * @note Clears 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 Enables CORTEX M3 SEVONPEND bit. 
+  * @note Sets 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 Disables CORTEX M3 SEVONPEND bit. 
+  * @note Clears 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  This function handles the PWR PVD interrupt request.
+  * @note   This API should be called under the PVD_IRQHandler().
+  * @retval None
+  */
+void HAL_PWR_PVD_IRQHandler(void)
+{
+  /* Check PWR exti flag */
+  if(__HAL_PWR_PVD_EXTI_GET_FLAG() != RESET)
+  {
+    /* PWR PVD interrupt user callback */
+    HAL_PWR_PVDCallback();
+
+    /* Clear PWR Exti pending bit */
+    __HAL_PWR_PVD_EXTI_CLEAR_FLAG();
+  }
+}
+
+/**
+  * @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 could be implemented in the user file
+   */ 
+}
+
+/**
+  * @}
+  */
+
+/**
+  * @}
+  */
+
+#endif /* HAL_PWR_MODULE_ENABLED */
+/**
+  * @}
+  */
+
+/**
+  * @}
+  */
+
+/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/