работает слейв и мастер

Core/Inc/app_entry.h

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+/* USER CODE BEGIN Header */
+/**
+  ******************************************************************************
+  * @file    app_entry.h
+  * @author  MCD Application Team
+  * @brief   Interface to the application
+  ******************************************************************************
+  * @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 APP_ENTRY_H
+#define APP_ENTRY_H
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/* Includes ------------------------------------------------------------------*/
+
+/* Private includes ----------------------------------------------------------*/
+/* USER CODE BEGIN Includes */
+
+/* USER CODE END Includes */
+
+/* Exported types ------------------------------------------------------------*/
+/* USER CODE BEGIN ET */
+
+/* USER CODE END ET */
+
+/* Exported constants --------------------------------------------------------*/
+/* USER CODE BEGIN EC */
+
+/* USER CODE END EC */
+
+/* Exported variables --------------------------------------------------------*/
+/* USER CODE BEGIN EV */
+
+/* USER CODE END EV */
+
+/* Exported macros ------------------------------------------------------------*/
+/* USER CODE BEGIN EM */
+
+/* USER CODE END EM */
+
+/* Exported functions ---------------------------------------------*/
+void MX_APPE_Config(void);
+void MX_APPE_Init(void);
+void MX_APPE_Process(void);
+void Init_Exti(void);
+void Init_Smps(void);
+
+/* USER CODE BEGIN EF */
+
+/* USER CODE END EF */
+
+#ifdef __cplusplus
+} /* extern "C" */
+#endif
+
+#endif /*APP_ENTRY_H */