a

USB_HOST/App/usb_host.c

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+/* USER CODE BEGIN Header */
+/**
+  ******************************************************************************
+  * @file            : usb_host.c
+  * @version         : v1.0_Cube
+  * @brief           : This file implements the USB Host
+  ******************************************************************************
+  * @attention
+  *
+  * Copyright (c) 2025 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 */
+
+/* Includes ------------------------------------------------------------------*/
+
+#include "usb_host.h"
+#include "usbh_core.h"
+#include "usbh_cdc.h"
+
+/* USER CODE BEGIN Includes */
+
+/* USER CODE END Includes */
+
+/* USER CODE BEGIN PV */
+/* Private variables ---------------------------------------------------------*/
+
+/* USER CODE END PV */
+
+/* USER CODE BEGIN PFP */
+/* Private function prototypes -----------------------------------------------*/
+
+/* USER CODE END PFP */
+
+/* USB Host core handle declaration */
+USBH_HandleTypeDef hUsbHostHS;
+ApplicationTypeDef Appli_state = APPLICATION_IDLE;
+
+/*
+ * -- Insert your variables declaration here --
+ */
+/* USER CODE BEGIN 0 */
+
+/* USER CODE END 0 */
+
+/*
+ * user callback declaration
+ */
+static void USBH_UserProcess(USBH_HandleTypeDef *phost, uint8_t id);
+
+/*
+ * -- Insert your external function declaration here --
+ */
+/* USER CODE BEGIN 1 */
+
+/* USER CODE END 1 */
+
+/**
+  * Init USB host library, add supported class and start the library
+  * @retval None
+  */
+void MX_USB_HOST_Init(void)
+{
+  /* USER CODE BEGIN USB_HOST_Init_PreTreatment */
+
+  /* USER CODE END USB_HOST_Init_PreTreatment */
+
+  /* Init host Library, add supported class and start the library. */
+  if (USBH_Init(&hUsbHostHS, USBH_UserProcess, HOST_HS) != USBH_OK)
+  {
+    Error_Handler();
+  }
+  if (USBH_RegisterClass(&hUsbHostHS, USBH_CDC_CLASS) != USBH_OK)
+  {
+    Error_Handler();
+  }
+  if (USBH_Start(&hUsbHostHS) != USBH_OK)
+  {
+    Error_Handler();
+  }
+  /* USER CODE BEGIN USB_HOST_Init_PostTreatment */
+
+  /* USER CODE END USB_HOST_Init_PostTreatment */
+}
+
+/*
+ * user callback definition
+ */
+static void USBH_UserProcess  (USBH_HandleTypeDef *phost, uint8_t id)
+{
+  /* USER CODE BEGIN CALL_BACK_1 */
+  switch(id)
+  {
+  case HOST_USER_SELECT_CONFIGURATION:
+  break;
+
+  case HOST_USER_DISCONNECTION:
+  Appli_state = APPLICATION_DISCONNECT;
+  break;
+
+  case HOST_USER_CLASS_ACTIVE:
+  Appli_state = APPLICATION_READY;
+  break;
+
+  case HOST_USER_CONNECTION:
+  Appli_state = APPLICATION_START;
+  break;
+
+  default:
+  break;
+  }
+  /* USER CODE END CALL_BACK_1 */
+}
+
+/**
+  * @}
+  */
+
+/**
+  * @}
+  */
+

USB_HOST/App/usb_host.h

@@ -0,0 +1,90 @@
+/* USER CODE BEGIN Header */
+/**
+  ******************************************************************************
+  * @file           : usb_host.h
+  * @version        : v1.0_Cube
+  * @brief          : Header for usb_host.c file.
+  ******************************************************************************
+  * @attention
+  *
+  * Copyright (c) 2025 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 __USB_HOST__H__
+#define __USB_HOST__H__
+
+#ifdef __cplusplus
+ extern "C" {
+#endif
+
+/* Includes ------------------------------------------------------------------*/
+#include "stm32f4xx.h"
+#include "stm32f4xx_hal.h"
+
+/* USER CODE BEGIN INCLUDE */
+
+/* USER CODE END INCLUDE */
+
+/** @addtogroup USBH_OTG_DRIVER
+  * @{
+  */
+
+/** @defgroup USBH_HOST USBH_HOST
+  * @brief Host file for Usb otg low level driver.
+  * @{
+  */
+
+/** @defgroup USBH_HOST_Exported_Variables USBH_HOST_Exported_Variables
+  * @brief Public variables.
+  * @{
+  */
+
+/**
+  * @}
+  */
+
+/** Status of the application. */
+typedef enum {
+  APPLICATION_IDLE = 0,
+  APPLICATION_START,
+  APPLICATION_READY,
+  APPLICATION_DISCONNECT
+}ApplicationTypeDef;
+
+/** @defgroup USBH_HOST_Exported_FunctionsPrototype USBH_HOST_Exported_FunctionsPrototype
+  * @brief Declaration of public functions for Usb host.
+  * @{
+  */
+
+/* Exported functions -------------------------------------------------------*/
+
+/** @brief USB Host initialization function. */
+void MX_USB_HOST_Init(void);
+
+/**
+  * @}
+  */
+
+/**
+  * @}
+  */
+
+/**
+  * @}
+  */
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* __USB_HOST__H__ */
+