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Diffstat (limited to 'c/src/lib/libbsp/arm/stm32f4x/hal/STM32F4xx_HAL_Driver/Src/stm32f4xx_hal_pwr_ex.c')
| -rw-r--r-- | c/src/lib/libbsp/arm/stm32f4x/hal/STM32F4xx_HAL_Driver/Src/stm32f4xx_hal_pwr_ex.c | 648 |
1 files changed, 0 insertions, 648 deletions
diff --git a/c/src/lib/libbsp/arm/stm32f4x/hal/STM32F4xx_HAL_Driver/Src/stm32f4xx_hal_pwr_ex.c b/c/src/lib/libbsp/arm/stm32f4x/hal/STM32F4xx_HAL_Driver/Src/stm32f4xx_hal_pwr_ex.c deleted file mode 100644 index fb7e62937e..0000000000 --- a/c/src/lib/libbsp/arm/stm32f4x/hal/STM32F4xx_HAL_Driver/Src/stm32f4xx_hal_pwr_ex.c +++ /dev/null @@ -1,648 +0,0 @@ -/** - ****************************************************************************** - * @file stm32f4xx_hal_pwr_ex.c - * @author MCD Application Team - * @version V1.4.0 - * @date 14-August-2015 - * @brief Extended PWR HAL module driver. - * This file provides firmware functions to manage the following - * functionalities of PWR extension peripheral: - * + Peripheral Extended features functions - * - ****************************************************************************** - * @attention - * - * <h2><center>© COPYRIGHT(c) 2015 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 "stm32f4xx_hal.h" - -/** @addtogroup STM32F4xx_HAL_Driver - * @{ - */ - -/** @defgroup PWREx PWREx - * @brief PWR HAL module driver - * @{ - */ - -#ifdef HAL_PWR_MODULE_ENABLED - -/* Private typedef -----------------------------------------------------------*/ -/* Private define ------------------------------------------------------------*/ -/** @addtogroup PWREx_Private_Constants - * @{ - */ -#define PWR_OVERDRIVE_TIMEOUT_VALUE 1000 -#define PWR_UDERDRIVE_TIMEOUT_VALUE 1000 -#define PWR_BKPREG_TIMEOUT_VALUE 1000 -#define PWR_VOSRDY_TIMEOUT_VALUE 1000 -/** - * @} - */ - - -/* Private macro -------------------------------------------------------------*/ -/* Private variables ---------------------------------------------------------*/ -/* Private function prototypes -----------------------------------------------*/ -/* Private functions ---------------------------------------------------------*/ -/** @defgroup PWREx_Exported_Functions PWREx Exported Functions - * @{ - */ - -/** @defgroup PWREx_Exported_Functions_Group1 Peripheral Extended features functions - * @brief Peripheral Extended features functions - * -@verbatim - - =============================================================================== - ##### Peripheral extended features functions ##### - =============================================================================== - - *** Main and Backup Regulators configuration *** - ================================================ - [..] - (+) The backup domain includes 4 Kbytes of backup SRAM accessible only from - the CPU, and address in 32-bit, 16-bit or 8-bit mode. Its content is - retained even in Standby or VBAT mode when the low power backup regulator - is enabled. It can be considered as an internal EEPROM when VBAT is - always present. You can use the HAL_PWREx_EnableBkUpReg() function to - enable the low power backup regulator. - - (+) When the backup domain is supplied by VDD (analog switch connected to VDD) - the backup SRAM is powered from VDD which replaces the VBAT power supply to - save battery life. - - (+) The backup SRAM is not mass erased by a tamper event. It is read - protected to prevent confidential data, such as cryptographic private - key, from being accessed. The backup SRAM can be erased only through - the Flash interface when a protection level change from level 1 to - level 0 is requested. - -@- Refer to the description of Read protection (RDP) in the Flash - programming manual. - - (+) The main internal regulator can be configured to have a tradeoff between - performance and power consumption when the device does not operate at - the maximum frequency. This is done through __HAL_PWR_MAINREGULATORMODE_CONFIG() - macro which configure VOS bit in PWR_CR register - - Refer to the product datasheets for more details. - - *** FLASH Power Down configuration **** - ======================================= - [..] - (+) By setting the FPDS bit in the PWR_CR register by using the - HAL_PWREx_EnableFlashPowerDown() function, the Flash memory also enters power - down mode when the device enters Stop mode. When the Flash memory - is in power down mode, an additional startup delay is incurred when - waking up from Stop mode. - - (+) For STM32F42xxx/43xxx/446xx/469xx/479xx Devices, the scale can be modified only when the PLL - is OFF and the HSI or HSE clock source is selected as system clock. - The new value programmed is active only when the PLL is ON. - When the PLL is OFF, the voltage scale 3 is automatically selected. - Refer to the datasheets for more details. - - *** Over-Drive and Under-Drive configuration **** - ================================================= - [..] - (+) For STM32F42xxx/43xxx/446xx/469xx/479xx Devices, in Run mode: the main regulator has - 2 operating modes available: - (++) Normal mode: The CPU and core logic operate at maximum frequency at a given - voltage scaling (scale 1, scale 2 or scale 3) - (++) Over-drive mode: This mode allows the CPU and the core logic to operate at a - higher frequency than the normal mode for a given voltage scaling (scale 1, - scale 2 or scale 3). This mode is enabled through HAL_PWREx_EnableOverDrive() function and - disabled by HAL_PWREx_DisableOverDrive() function, to enter or exit from Over-drive mode please follow - the sequence described in Reference manual. - - (+) For STM32F42xxx/43xxx/446xx/469xx/479xx Devices, in Stop mode: the main regulator or low power regulator - supplies a low power voltage to the 1.2V domain, thus preserving the content of registers - and internal SRAM. 2 operating modes are available: - (++) Normal mode: the 1.2V domain is preserved in nominal leakage mode. This mode is only - available when the main regulator or the low power regulator is used in Scale 3 or - low voltage mode. - (++) Under-drive mode: the 1.2V domain is preserved in reduced leakage mode. This mode is only - available when the main regulator or the low power regulator is in low voltage mode. - -@endverbatim - * @{ - */ - -/** - * @brief Enables the Backup Regulator. - * @retval HAL status - */ -HAL_StatusTypeDef HAL_PWREx_EnableBkUpReg(void) -{ - uint32_t tickstart = 0; - - *(__IO uint32_t *) CSR_BRE_BB = (uint32_t)ENABLE; - - /* Get tick */ - tickstart = HAL_GetTick(); - - /* Wait till Backup regulator ready flag is set */ - while(__HAL_PWR_GET_FLAG(PWR_FLAG_BRR) == RESET) - { - if((HAL_GetTick() - tickstart ) > PWR_BKPREG_TIMEOUT_VALUE) - { - return HAL_TIMEOUT; - } - } - return HAL_OK; -} - -/** - * @brief Disables the Backup Regulator. - * @retval HAL status - */ -HAL_StatusTypeDef HAL_PWREx_DisableBkUpReg(void) -{ - uint32_t tickstart = 0; - - *(__IO uint32_t *) CSR_BRE_BB = (uint32_t)DISABLE; - - /* Get tick */ - tickstart = HAL_GetTick(); - - /* Wait till Backup regulator ready flag is set */ - while(__HAL_PWR_GET_FLAG(PWR_FLAG_BRR) != RESET) - { - if((HAL_GetTick() - tickstart ) > PWR_BKPREG_TIMEOUT_VALUE) - { - return HAL_TIMEOUT; - } - } - return HAL_OK; -} - -/** - * @brief Enables the Flash Power Down in Stop mode. - * @retval None - */ -void HAL_PWREx_EnableFlashPowerDown(void) -{ - *(__IO uint32_t *) CR_FPDS_BB = (uint32_t)ENABLE; -} - -/** - * @brief Disables the Flash Power Down in Stop mode. - * @retval None - */ -void HAL_PWREx_DisableFlashPowerDown(void) -{ - *(__IO uint32_t *) CR_FPDS_BB = (uint32_t)DISABLE; -} - -/** - * @brief Return Voltage Scaling Range. - * @retval The configured scale for the regulator voltage(VOS bit field). - * The returned value can be one of the following: - * - @arg PWR_REGULATOR_VOLTAGE_SCALE1: Regulator voltage output Scale 1 mode - * - @arg PWR_REGULATOR_VOLTAGE_SCALE2: Regulator voltage output Scale 2 mode - * - @arg PWR_REGULATOR_VOLTAGE_SCALE3: Regulator voltage output Scale 3 mode - */ -uint32_t HAL_PWREx_GetVoltageRange(void) -{ - return (PWR->CR & PWR_CR_VOS); -} - -#if defined(STM32F405xx) || defined(STM32F415xx) || defined(STM32F407xx) || defined(STM32F417xx) -/** - * @brief Configures the main internal regulator output voltage. - * @param VoltageScaling: specifies the regulator output voltage to achieve - * a tradeoff between performance and power consumption. - * This parameter can be one of the following values: - * @arg PWR_REGULATOR_VOLTAGE_SCALE1: Regulator voltage output range 1 mode, - * the maximum value of fHCLK = 168 MHz. - * @arg PWR_REGULATOR_VOLTAGE_SCALE2: Regulator voltage output range 2 mode, - * the maximum value of fHCLK = 144 MHz. - * @note When moving from Range 1 to Range 2, the system frequency must be decreased to - * a value below 144 MHz before calling HAL_PWREx_ConfigVoltageScaling() API. - * When moving from Range 2 to Range 1, the system frequency can be increased to - * a value up to 168 MHz after calling HAL_PWREx_ConfigVoltageScaling() API. - * @retval HAL Status - */ -HAL_StatusTypeDef HAL_PWREx_ControlVoltageScaling(uint32_t VoltageScaling) -{ - uint32_t tickstart = 0; - - assert_param(IS_PWR_VOLTAGE_SCALING_RANGE(VoltageScaling)); - - /* Enable PWR RCC Clock Peripheral */ - __HAL_RCC_PWR_CLK_ENABLE(); - - /* Set Range */ - __HAL_PWR_VOLTAGESCALING_CONFIG(VoltageScaling); - - /* Get Start Tick*/ - tickstart = HAL_GetTick(); - while((__HAL_PWR_GET_FLAG(PWR_FLAG_VOSRDY) == RESET)) - { - if((HAL_GetTick() - tickstart ) > PWR_VOSRDY_TIMEOUT_VALUE) - { - return HAL_TIMEOUT; - } - } - - return HAL_OK; -} - -#elif defined(STM32F427xx) || defined(STM32F437xx) || defined(STM32F429xx) || defined(STM32F439xx) || \ - defined(STM32F401xC) || defined(STM32F401xE) || defined(STM32F410Tx) || defined(STM32F410Cx) || \ - defined(STM32F410Rx) || defined(STM32F411xE) || defined(STM32F446xx) || defined(STM32F469xx) || \ - defined(STM32F479xx) -/** - * @brief Configures the main internal regulator output voltage. - * @param VoltageScaling: specifies the regulator output voltage to achieve - * a tradeoff between performance and power consumption. - * This parameter can be one of the following values: - * @arg PWR_REGULATOR_VOLTAGE_SCALE1: Regulator voltage output range 1 mode, - * the maximum value of fHCLK is 168 MHz. It can be extended to - * 180 MHz by activating the over-drive mode. - * @arg PWR_REGULATOR_VOLTAGE_SCALE2: Regulator voltage output range 2 mode, - * the maximum value of fHCLK is 144 MHz. It can be extended to, - * 168 MHz by activating the over-drive mode. - * @arg PWR_REGULATOR_VOLTAGE_SCALE3: Regulator voltage output range 3 mode, - * the maximum value of fHCLK is 120 MHz. - * @note To update the system clock frequency(SYSCLK): - * - Set the HSI or HSE as system clock frequency using the HAL_RCC_ClockConfig(). - * - Call the HAL_RCC_OscConfig() to configure the PLL. - * - Call HAL_PWREx_ConfigVoltageScaling() API to adjust the voltage scale. - * - Set the new system clock frequency using the HAL_RCC_ClockConfig(). - * @note The scale can be modified only when the HSI or HSE clock source is selected - * as system clock source, otherwise the API returns HAL_ERROR. - * @note When the PLL is OFF, the voltage scale 3 is automatically selected and the VOS bits - * value in the PWR_CR1 register are not taken in account. - * @note This API forces the PLL state ON to allow the possibility to configure the voltage scale 1 or 2. - * @note The new voltage scale is active only when the PLL is ON. - * @retval HAL Status - */ -HAL_StatusTypeDef HAL_PWREx_ControlVoltageScaling(uint32_t VoltageScaling) -{ - uint32_t tickstart = 0; - - assert_param(IS_PWR_VOLTAGE_SCALING_RANGE(VoltageScaling)); - - /* Enable PWR RCC Clock Peripheral */ - __HAL_RCC_PWR_CLK_ENABLE(); - - /* Check if the PLL is used as system clock or not */ - if(__HAL_RCC_GET_SYSCLK_SOURCE() != RCC_CFGR_SWS_PLL) - { - /* Disable the main PLL */ - __HAL_RCC_PLL_DISABLE(); - - /* Get Start Tick */ - tickstart = HAL_GetTick(); - /* Wait till PLL is disabled */ - while(__HAL_RCC_GET_FLAG(RCC_FLAG_PLLRDY) != RESET) - { - if((HAL_GetTick() - tickstart ) > PLL_TIMEOUT_VALUE) - { - return HAL_TIMEOUT; - } - } - - /* Set Range */ - __HAL_PWR_VOLTAGESCALING_CONFIG(VoltageScaling); - - /* Enable the main PLL */ - __HAL_RCC_PLL_ENABLE(); - - /* Get Start Tick */ - tickstart = HAL_GetTick(); - /* Wait till PLL is ready */ - while(__HAL_RCC_GET_FLAG(RCC_FLAG_PLLRDY) == RESET) - { - if((HAL_GetTick() - tickstart ) > PLL_TIMEOUT_VALUE) - { - return HAL_TIMEOUT; - } - } - - /* Get Start Tick */ - tickstart = HAL_GetTick(); - while((__HAL_PWR_GET_FLAG(PWR_FLAG_VOSRDY) == RESET)) - { - if((HAL_GetTick() - tickstart ) > PWR_VOSRDY_TIMEOUT_VALUE) - { - return HAL_TIMEOUT; - } - } - } - else - { - return HAL_ERROR; - } - - return HAL_OK; -} -#endif /* STM32F405xx || STM32F415xx || STM32F407xx || STM32F417xx */ - -#if defined(STM32F469xx) || defined(STM32F479xx) -/** - * @brief Enables Wakeup Pin Detection on high level (rising edge). - * @retval None - */ -void HAL_PWREx_EnableWakeUpPinPolarityRisingEdge(void) -{ - *(__IO uint32_t *) CSR_WUPP_BB = (uint32_t)DISABLE; -} - -/** - * @brief Enables Wakeup Pin Detection on low level (falling edge). - * @retval None - */ -void HAL_PWREx_EnableWakeUpPinPolarityFallingEdge(void) -{ - *(__IO uint32_t *) CSR_WUPP_BB = (uint32_t)ENABLE; -} -#endif /* STM32F469xx || STM32F479xx */ - -#if defined(STM32F401xC) || defined(STM32F401xE) || defined(STM32F410Tx) || defined(STM32F410Cx) || defined(STM32F410Rx) ||\ - defined(STM32F411xE) -/** - * @brief Enables Main Regulator low voltage mode. - * @note This mode is only available for STM32F401xx/STM32F410xx/STM32F411xx devices. - * @retval None - */ -void HAL_PWREx_EnableMainRegulatorLowVoltage(void) -{ - *(__IO uint32_t *) CR_MRLVDS_BB = (uint32_t)ENABLE; -} - -/** - * @brief Disables Main Regulator low voltage mode. - * @note This mode is only available for STM32F401xx/STM32F410xx/STM32F411xx devices. - * @retval None - */ -void HAL_PWREx_DisableMainRegulatorLowVoltage(void) -{ - *(__IO uint32_t *) CR_MRLVDS_BB = (uint32_t)DISABLE; -} - -/** - * @brief Enables Low Power Regulator low voltage mode. - * @note This mode is only available for STM32F401xx/STM32F410xx/STM32F411xx devices. - * @retval None - */ -void HAL_PWREx_EnableLowRegulatorLowVoltage(void) -{ - *(__IO uint32_t *) CR_LPLVDS_BB = (uint32_t)ENABLE; -} - -/** - * @brief Disables Low Power Regulator low voltage mode. - * @note This mode is only available for STM32F401xx/STM32F410xx/STM32F411xx devices. - * @retval None - */ -void HAL_PWREx_DisableLowRegulatorLowVoltage(void) -{ - *(__IO uint32_t *) CR_LPLVDS_BB = (uint32_t)DISABLE; -} - -#endif /* STM32F401xC || STM32F401xE || STM32F410xx || STM32F411xE */ - -#if defined(STM32F427xx) || defined(STM32F437xx) || defined(STM32F429xx) || defined(STM32F439xx) ||\ - defined(STM32F446xx) || defined(STM32F469xx) || defined(STM32F479xx) -/** - * @brief Activates the Over-Drive mode. - * @note This function can be used only for STM32F42xx/STM32F43xx/STM32F446xx/STM32F469xx/STM32F479xx devices. - * This mode allows the CPU and the core logic to operate at a higher frequency - * than the normal mode for a given voltage scaling (scale 1, scale 2 or scale 3). - * @note It is recommended to enter or exit Over-drive mode when the application is not running - * critical tasks and when the system clock source is either HSI or HSE. - * During the Over-drive switch activation, no peripheral clocks should be enabled. - * The peripheral clocks must be enabled once the Over-drive mode is activated. - * @retval HAL status - */ -HAL_StatusTypeDef HAL_PWREx_EnableOverDrive(void) -{ - uint32_t tickstart = 0; - - __HAL_RCC_PWR_CLK_ENABLE(); - - /* Enable the Over-drive to extend the clock frequency to 180 Mhz */ - __HAL_PWR_OVERDRIVE_ENABLE(); - - /* Get tick */ - tickstart = HAL_GetTick(); - - while(!__HAL_PWR_GET_FLAG(PWR_FLAG_ODRDY)) - { - if((HAL_GetTick() - tickstart ) > PWR_OVERDRIVE_TIMEOUT_VALUE) - { - return HAL_TIMEOUT; - } - } - - /* Enable the Over-drive switch */ - __HAL_PWR_OVERDRIVESWITCHING_ENABLE(); - - /* Get tick */ - tickstart = HAL_GetTick(); - - while(!__HAL_PWR_GET_FLAG(PWR_FLAG_ODSWRDY)) - { - if((HAL_GetTick() - tickstart ) > PWR_OVERDRIVE_TIMEOUT_VALUE) - { - return HAL_TIMEOUT; - } - } - return HAL_OK; -} - -/** - * @brief Deactivates the Over-Drive mode. - * @note This function can be used only for STM32F42xx/STM32F43xx/STM32F446xx/STM32F469xx/STM32F479xx devices. - * This mode allows the CPU and the core logic to operate at a higher frequency - * than the normal mode for a given voltage scaling (scale 1, scale 2 or scale 3). - * @note It is recommended to enter or exit Over-drive mode when the application is not running - * critical tasks and when the system clock source is either HSI or HSE. - * During the Over-drive switch activation, no peripheral clocks should be enabled. - * The peripheral clocks must be enabled once the Over-drive mode is activated. - * @retval HAL status - */ -HAL_StatusTypeDef HAL_PWREx_DisableOverDrive(void) -{ - uint32_t tickstart = 0; - - __HAL_RCC_PWR_CLK_ENABLE(); - - /* Disable the Over-drive switch */ - __HAL_PWR_OVERDRIVESWITCHING_DISABLE(); - - /* Get tick */ - tickstart = HAL_GetTick(); - - while(__HAL_PWR_GET_FLAG(PWR_FLAG_ODSWRDY)) - { - if((HAL_GetTick() - tickstart ) > PWR_OVERDRIVE_TIMEOUT_VALUE) - { - return HAL_TIMEOUT; - } - } - - /* Disable the Over-drive */ - __HAL_PWR_OVERDRIVE_DISABLE(); - - /* Get tick */ - tickstart = HAL_GetTick(); - - while(__HAL_PWR_GET_FLAG(PWR_FLAG_ODRDY)) - { - if((HAL_GetTick() - tickstart ) > PWR_OVERDRIVE_TIMEOUT_VALUE) - { - return HAL_TIMEOUT; - } - } - - return HAL_OK; -} - -/** - * @brief Enters in Under-Drive STOP mode. - * - * @note This mode is only available for STM32F42xxx/STM324F3xxx/STM32F446xx/STM32F469xx/STM32F479xx devices. - * - * @note This mode can be selected only when the Under-Drive is already active - * - * @note This mode is enabled only with STOP low power mode. - * In this mode, the 1.2V domain is preserved in reduced leakage mode. This - * mode is only available when the main regulator or the low power regulator - * is in low voltage mode - * - * @note If the Under-drive mode was enabled, it is automatically disabled after - * exiting Stop mode. - * When the voltage regulator operates in Under-drive mode, an additional - * startup delay is induced when waking up from Stop mode. - * - * @note In Stop mode, all I/O pins keep the same state as in Run mode. - * - * @note When exiting Stop mode by issuing an interrupt or a wake-up event, - * the 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_UNDERDRIVE_ON: Main Regulator in under-drive mode - * and Flash memory in power-down when the device is in Stop under-drive mode - * @arg PWR_LOWPOWERREGULATOR_UNDERDRIVE_ON: Low Power Regulator in under-drive mode - * and Flash memory in power-down when the device is in Stop under-drive mode - * @param STOPEntry: specifies if STOP mode in entered with WFI or WFE instruction. - * This parameter can be one of the following values: - * @arg PWR_SLEEPENTRY_WFI: enter STOP mode with WFI instruction - * @arg PWR_SLEEPENTRY_WFE: enter STOP mode with WFE instruction - * @retval None - */ -HAL_StatusTypeDef HAL_PWREx_EnterUnderDriveSTOPMode(uint32_t Regulator, uint8_t STOPEntry) -{ - uint32_t tmpreg1 = 0; - uint32_t tickstart = 0; - - /* Check the parameters */ - assert_param(IS_PWR_REGULATOR_UNDERDRIVE(Regulator)); - assert_param(IS_PWR_STOP_ENTRY(STOPEntry)); - - /* Enable Power ctrl clock */ - __HAL_RCC_PWR_CLK_ENABLE(); - /* Enable the Under-drive Mode ---------------------------------------------*/ - /* Clear Under-drive flag */ - __HAL_PWR_CLEAR_ODRUDR_FLAG(); - - /* Enable the Under-drive */ - __HAL_PWR_UNDERDRIVE_ENABLE(); - - /* Get tick */ - tickstart = HAL_GetTick(); - - /* Wait for UnderDrive mode is ready */ - while(__HAL_PWR_GET_FLAG(PWR_FLAG_UDRDY)) - { - if((HAL_GetTick() - tickstart ) > PWR_UDERDRIVE_TIMEOUT_VALUE) - { - return HAL_TIMEOUT; - } - } - - /* Select the regulator state in STOP mode ---------------------------------*/ - tmpreg1 = PWR->CR; - /* Clear PDDS, LPDS, MRLUDS and LPLUDS bits */ - tmpreg1 &= (uint32_t)~(PWR_CR_PDDS | PWR_CR_LPDS | PWR_CR_LPUDS | PWR_CR_MRUDS); - - /* Set LPDS, MRLUDS and LPLUDS bits according to PWR_Regulator value */ - tmpreg1 |= Regulator; - - /* Store the new value */ - PWR->CR = tmpreg1; - - /* Set SLEEPDEEP bit of Cortex System Control Register */ - SCB->SCR |= SCB_SCR_SLEEPDEEP_Msk; - - /* Select STOP mode entry --------------------------------------------------*/ - if(STOPEntry == PWR_SLEEPENTRY_WFI) - { - /* Request Wait For Interrupt */ - __WFI(); - } - else - { - /* Request Wait For Event */ - __WFE(); - } - /* Reset SLEEPDEEP bit of Cortex System Control Register */ - SCB->SCR &= (uint32_t)~((uint32_t)SCB_SCR_SLEEPDEEP_Msk); - - return HAL_OK; -} - -#endif /* STM32F427xx || STM32F437xx || STM32F429xx || STM32F439xx || STM32F446xx || STM32F469xx || STM32F479xx */ -/** - * @} - */ - -/** - * @} - */ - -#endif /* HAL_PWR_MODULE_ENABLED */ -/** - * @} - */ - -/** - * @} - */ - -/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/ |