--- /dev/null
+/**
+ ******************************************************************************
+ * @file stm32l0xx_hal_pwr_ex.c
+ * @author MCD Application Team
+ * @version V1.2.0
+ * @date 06-February-2015
+ * @brief Extended PWR HAL module driver.
+ * This file provides firmware functions to manage the following
+ * functionalities of the Power Controller (PWR) peripheral:
+ * + Extended Initialization and de-initialization functions
+ * + Extended Peripheral Control 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 "stm32l0xx_hal.h"
+
+#ifdef HAL_PWR_MODULE_ENABLED
+/** @addtogroup STM32L0xx_HAL_Driver
+ * @{
+ */
+
+/** @addtogroup PWREx
+ * @{
+ */
+
+/** @defgroup PWR_Extended_TimeOut_Value PWR Extended Flag Setting Time Out Value
+ * @{
+ */
+#define PWR_FLAG_SETTING_DELAY_US 50
+/**
+ * @}
+ */
+
+
+/** @addtogroup PWREx_Exported_Functions
+ * @brief Low Power modes configuration functions
+ *
+@verbatim
+
+ ===============================================================================
+ ##### Peripheral extended features functions #####
+ ===============================================================================
+@endverbatim
+ * @{
+ */
+
+/**
+ * @brief Enables the Fast WakeUp from Ultra Low Power mode.
+ * @note This bit works in conjunction with ULP bit.
+ * Means, when ULP = 1 and FWU = 1 :VREFINT startup time is ignored when
+ * exiting from low power mode.
+ * @retval None
+ */
+void HAL_PWREx_EnableFastWakeUp(void)
+{
+ /* Enable the fast wake up */
+ SET_BIT(PWR->CR, PWR_CR_FWU);
+}
+
+/**
+ * @brief Disables the Fast WakeUp from Ultra Low Power mode.
+ * @retval None
+ */
+void HAL_PWREx_DisableFastWakeUp(void)
+{
+ /* Disable the fast wake up */
+ CLEAR_BIT(PWR->CR, PWR_CR_FWU);
+}
+
+/**
+ * @brief Enables the Ultra Low Power mode
+ * @retval None
+ */
+void HAL_PWREx_EnableUltraLowPower(void)
+{
+ /* Enable the Ultra Low Power mode */
+ SET_BIT(PWR->CR, PWR_CR_ULP);
+}
+
+/**
+ * @brief Disables the Ultra Low Power mode
+ * @retval None
+ */
+void HAL_PWREx_DisableUltraLowPower(void)
+{
+ /* Disable the Ultra Low Power mode */
+ CLEAR_BIT(PWR->CR, PWR_CR_ULP);
+}
+
+/**
+ * @brief Enable the Low Power Run mode.
+ * @note Low power run mode can only be entered when VCORE is in range 2.
+ * In addition, the dynamic voltage scaling must not be used when Low
+ * power run mode is selected. Only Stop and Sleep modes with regulator
+ * configured in Low power mode is allowed when Low power run mode is
+ * selected.
+ * @note The frequency of the system clock must be decreased to not exceed the
+ * frequency of RCC_MSIRANGE_1.
+ * @note In Low power run mode, all I/O pins keep the same state as in Run mode.
+ * @retval None
+ */
+void HAL_PWREx_EnableLowPowerRunMode(void)
+{
+ /* Enters the Low Power Run mode */
+ SET_BIT(PWR->CR, PWR_CR_LPSDSR);
+ SET_BIT(PWR->CR, PWR_CR_LPRUN);
+}
+
+/**
+ * @brief Disable the Low Power Run mode.
+ * @note Before HAL_PWREx_DisableLowPowerRunMode() completion, the function checks that
+ * REGLPF has been properly reset (otherwise, HAL_PWREx_DisableLowPowerRunMode
+ * returns HAL_TIMEOUT status). The system clock frequency can then be
+ * increased above 2 MHz.
+ * @retval HAL_StatusTypeDef
+ */
+HAL_StatusTypeDef HAL_PWREx_DisableLowPowerRunMode(void)
+{
+ uint32_t wait_loop_index = 0;
+
+ /* Exit the Low Power Run mode */
+ CLEAR_BIT(PWR->CR, PWR_CR_LPRUN);
+ CLEAR_BIT(PWR->CR, PWR_CR_LPSDSR);
+
+ /* Wait until REGLPF is reset */
+ wait_loop_index = (PWR_FLAG_SETTING_DELAY_US * (SystemCoreClock / 1000000));
+
+ while ((wait_loop_index != 0) && (HAL_IS_BIT_SET(PWR->CSR, PWR_CSR_REGLPF)))
+ {
+ wait_loop_index--;
+ }
+
+ if (HAL_IS_BIT_SET(PWR->CSR, PWR_CSR_REGLPF))
+ {
+ return HAL_TIMEOUT;
+ }
+
+ return HAL_OK;
+}
+
+/**
+ * @}
+ */
+
+/**
+ * @}
+ */
+
+/**
+ * @}
+ */
+#endif /* HAL_PWR_MODULE_ENABLED */
+
+/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
+
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