diff options
Diffstat (limited to 'stmhal/hal/l4/src/stm32l4xx_hal_pwr.c')
| -rw-r--r-- | stmhal/hal/l4/src/stm32l4xx_hal_pwr.c | 676 |
1 files changed, 0 insertions, 676 deletions
diff --git a/stmhal/hal/l4/src/stm32l4xx_hal_pwr.c b/stmhal/hal/l4/src/stm32l4xx_hal_pwr.c deleted file mode 100644 index 68e6fe7dd..000000000 --- a/stmhal/hal/l4/src/stm32l4xx_hal_pwr.c +++ /dev/null @@ -1,676 +0,0 @@ -/** - ****************************************************************************** - * @file stm32l4xx_hal_pwr.c - * @author MCD Application Team - * @version V1.3.0 - * @date 29-January-2016 - * @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>© COPYRIGHT(c) 2016 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 "stm32l4xx_hal.h" - -/** @addtogroup STM32L4xx_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 ((uint32_t)0x00010000) /*!< Mask for interruption yielded by PVD threshold crossing */ -#define PVD_MODE_EVT ((uint32_t)0x00020000) /*!< Mask for event yielded by PVD threshold crossing */ -#define PVD_RISING_EDGE ((uint32_t)0x00000001) /*!< Mask for rising edge set as PVD trigger */ -#define PVD_FALLING_EDGE ((uint32_t)0x00000002) /*!< Mask for falling edge set as PVD trigger */ -/** - * @} - */ - -/** - * @} - */ - -/* 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 thru 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 thru 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 thru 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 thru 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(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_CR3_EWUP & WakeUpPinPolarity), (WakeUpPinPolarity >> PWR_WUP_POLARITY_SHIFT)); - - /* Enable wake-up pin */ - SET_BIT(PWR->CR3, (PWR_CR3_EWUP & 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_CR3_EWUP & 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)) - { - HAL_PWREx_DisableLowPowerRunMode(); - } - /* 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 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)); - - if(Regulator == PWR_LOWPOWERREGULATOR_ON) - { - HAL_PWREx_EnterSTOP1Mode(STOPEntry); - } - else - { - HAL_PWREx_EnterSTOP0Mode(STOPEntry); - } -} - -/** - * @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_STANDBY); - - /* 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 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 */ -/** - * @} - */ - -/** - * @} - */ - -/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/ |