esp-idf/components/usb/private_include/hub.h

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/*
* SPDX-FileCopyrightText: 2015-2021 Espressif Systems (Shanghai) CO LTD
*
* SPDX-License-Identifier: Apache-2.0
*/
#pragma once
#include <stdlib.h>
#include <stdint.h>
#include "esp_err.h"
#include "usb_private.h"
#include "usbh.h"
#ifdef __cplusplus
extern "C" {
#endif
// ------------------------------------------------------ Types --------------------------------------------------------
/**
* @brief Hub driver configuration
*/
typedef struct {
usb_notif_cb_t notif_cb; /**< Notification callback */
void *notif_cb_arg; /**< Notification callback argument */
} hub_config_t;
// ---------------------------------------------- Hub Driver Functions -------------------------------------------------
/**
* @brief Install Hub driver
*
* Entry:
* - USBH must already be installed
* Exit:
* - Install Hub driver memory resources
* - Initializes the HCD root port
*
* @param[in] hub_config Hub driver configuration
* @return esp_err_t
*/
esp_err_t hub_install(hub_config_t *hub_config);
/**
* @brief Uninstall Hub driver
*
* This must be called before uninstalling the USBH
* Entry:
* - Must have stopped the root port
* Exit:
* - HCD root port deinitialized
*
* @return esp_err_t
*/
esp_err_t hub_uninstall(void);
/**
* @brief Start the Hub driver's root port
*
* This will power the root port ON
*
* @return esp_err_t
*/
esp_err_t hub_root_start(void);
/**
* @brief Stops the Hub driver's root port
*
* This will power OFF the root port
*
* @return esp_err_t
*/
esp_err_t hub_root_stop(void);
/**
* @brief Hub driver's processing function
*
* Hub driver handling function that must be called repeatdly to process the Hub driver's events. If blocking, the
* caller can block on the notification callback of source USB_NOTIF_SOURCE_HUB to run this function.
*
* @return esp_err_t
*/
esp_err_t hub_process(void);
#ifdef __cplusplus
}
#endif