работает слейв и мастер

Core/Inc/stm32_lpm_if.h

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+/* USER CODE BEGIN Header */
+/**
+  ******************************************************************************
+  * @file    stm32_lpm_if.h
+  * @author  MCD Application Team
+  * @brief   Header for stm32_lpm_if.c module (device specific LP management)
+  ******************************************************************************
+  * @attention
+  *
+  * Copyright (c) 2019-2023 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.
+  *
+  ******************************************************************************
+  */
+/* USER CODE END Header */
+
+/* Define to prevent recursive inclusion -------------------------------------*/
+#ifndef STM32_LPM_IF_H
+#define STM32_LPM_IF_H
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/* Includes ------------------------------------------------------------------*/
+
+/**
+  * @brief Enters Low Power Off Mode
+  * @param none
+  * @retval none
+  */
+void PWR_EnterOffMode( void );
+/**
+  * @brief Exits Low Power Off Mode
+  * @param none
+  * @retval none
+  */
+void PWR_ExitOffMode( void );
+
+/**
+  * @brief Enters Low Power Stop Mode
+  * @note ARM exists the function when waking up
+  * @param none
+  * @retval none
+  */
+void PWR_EnterStopMode( void );
+/**
+  * @brief Exits Low Power Stop Mode
+  * @note Enable the pll at 32MHz
+  * @param none
+  * @retval none
+  */
+void PWR_ExitStopMode( void );
+
+/**
+  * @brief Enters Low Power Sleep Mode
+  * @note ARM exits the function when waking up
+  * @param none
+  * @retval none
+  */
+void PWR_EnterSleepMode( void );
+
+/**
+  * @brief Exits Low Power Sleep Mode
+  * @note ARM exits the function when waking up
+  * @param none
+  * @retval none
+  */
+void PWR_ExitSleepMode( void );
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /*STM32_LPM_IF_H */
+