mirror of
https://github.com/espressif/esp-idf.git
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253 lines
8.3 KiB
C
253 lines
8.3 KiB
C
/*
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* SPDX-FileCopyrightText: 2015-2024 Espressif Systems (Shanghai) CO LTD
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*
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* SPDX-License-Identifier: Apache-2.0
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*/
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#pragma once
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#include <stdlib.h>
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#include <stdint.h>
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#include "sdkconfig.h"
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#include "esp_err.h"
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#include "usb_private.h"
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#include "usbh.h"
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#if CONFIG_USB_HOST_HUBS_SUPPORTED
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#define ENABLE_USB_HUBS 1
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#endif // CONFIG_USB_HOST_HUBS_SUPPORTED
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#ifdef __cplusplus
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extern "C" {
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#endif
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// ----------------------------- Events ----------------------------------------
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typedef enum {
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HUB_EVENT_CONNECTED, /**< Device has been connected */
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HUB_EVENT_RESET_COMPLETED, /**< Device reset completed */
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HUB_EVENT_DISCONNECTED, /**< Device has been disconnected */
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} hub_event_t;
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typedef struct {
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hub_event_t event; /**< HUB event ID */
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union {
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struct {
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unsigned int uid; /**< Unique device ID */
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} connected; /**< HUB_EVENT_DEV_CONNECTED specific data */
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struct {
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unsigned int uid; /**< Unique device ID */
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} reset_completed; /**< HUB_EVENT_RESET_COMPLETED specific data */
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struct {
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unsigned int uid; /**< Unique device ID */
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} disconnected; /**< HUB_EVENT_DEV_DISCONNECTED specific data */
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};
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} hub_event_data_t;
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// ---------------------- Callbacks ------------------------
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/**
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* @brief Callback used to indicate that the USBH has an event
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*
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* @note This callback is called from within usbh_process()
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*/
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typedef void (*hub_event_cb_t)(hub_event_data_t *event_data, void *arg);
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// ------------------------------------------------------ Types --------------------------------------------------------
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/**
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* @brief Hub driver configuration
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*/
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typedef struct {
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usb_proc_req_cb_t proc_req_cb; /**< Processing request callback */
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void *proc_req_cb_arg; /**< Processing request callback argument */
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hub_event_cb_t event_cb; /**< Hub event callback */
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void *event_cb_arg; /**< Hub event callback argument */
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} hub_config_t;
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// ---------------------------------------------- Hub Driver Functions -------------------------------------------------
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/**
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* @brief Install Hub driver
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*
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* Entry:
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* - USBH must already be installed
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* Exit:
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* - Install Hub driver memory resources
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* - Initializes the HCD root port
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*
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* @param[in] hub_config Hub driver configuration
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* @param[out] client_ret Unique pointer to identify the Hub as a USB Host client
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*
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* @return
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* - ESP_OK: Hub driver installed successfully
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* - ESP_ERR_INVALID_STATE: Hub driver is not in correct state to be installed
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* - ESP_ERR_NO_MEM: Insufficient memory
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* - ESP_ERR_INVALID_ARG: Arguments are invalid
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*/
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esp_err_t hub_install(hub_config_t *hub_config, void **client_ret);
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/**
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* @brief Uninstall Hub driver
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*
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* This must be called before uninstalling the USBH
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* Entry:
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* - Must have stopped the root port
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* Exit:
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* - HCD root port deinitialized
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*
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* @return
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* - ESP_OK: Hub driver uninstalled successfully
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* - ESP_ERR_INVALID_STATE: Hub driver is not installed, or root port is in other state than not powered
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*/
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esp_err_t hub_uninstall(void);
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/**
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* @brief Start the Hub driver's root port
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*
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* This will power the root port ON
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*
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* @note This function should only be called from the Host Library task
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*
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* @return
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* - ESP_OK: Hub driver started successfully
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* - ESP_ERR_INVALID_STATE: Hub driver is not installed, or root port is in other state than not powered
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*/
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esp_err_t hub_root_start(void);
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/**
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* @brief Stops the Hub driver's root port
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*
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* This will power OFF the root port
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*
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* @return
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* - ESP_OK: Hub driver started successfully
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* - ESP_ERR_INVALID_STATE: Hub driver is not installed, or root port is in not powered state
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*/
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esp_err_t hub_root_stop(void);
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/**
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* @brief Indicate to the Hub driver that a device's port can be recycled
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*
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* The device connected to the port has been freed. The Hub driver can now recycled the port
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*
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* @note This function should only be called from the Host Library task
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*
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* @param[in] parent_dev_hdl Parent device handle (is used to get the External Hub handle)
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* @param[in] parent_port_num Parent number (is used to specify the External Port)
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* @param[in] dev_uid Device's unique ID
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*
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* @return
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* - ESP_OK: device's port can be recycled
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* - ESP_ERR_INVALID_STATE: Hub driver is not installed
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* - ESP_ERR_NOT_SUPPORTED: Recycling External Port is not available (External Hub support disabled),
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* or ext hub port error
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*/
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esp_err_t hub_port_recycle(usb_device_handle_t parent_dev_hdl, uint8_t parent_port_num, unsigned int dev_uid);
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/**
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* @brief Reset the port
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*
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* @note This function should only be called from the Host Library task
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*
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* @param[in] parent_dev_hdl Parent device handle (is used to get the External Hub handle)
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* @param[in] parent_port_num Parent number (is used to specify the External Port)
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* @return
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* - ESP_OK: Port reset successful
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* - ESP_ERR_INVALID_STATE: Hub driver is not installed
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* - ESP_ERR_NOT_SUPPORTED: Resetting External Port is not available (External Hub support disabled),
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* or ext hub port error
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*/
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esp_err_t hub_port_reset(usb_device_handle_t parent_dev_hdl, uint8_t parent_port_num);
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/**
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* @brief Activate the port
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*
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* @note This function should only be called from the Host Library task
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*
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* @param[in] parent_dev_hdl Parent device handle (is used to get the External Hub handle)
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* @param[in] parent_port_num Parent number (is used to specify the External Port)
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*
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* @return
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* - ESP_OK: Port activated successfully
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* - ESP_ERR_NOT_SUPPORTED: Activating External Port is not available (External Hub support disabled),
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* or ext hub port error
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*/
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esp_err_t hub_port_active(usb_device_handle_t parent_dev_hdl, uint8_t parent_port_num);
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/**
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* @brief Disable the port
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*
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* @note This function should only be called from the Host Library task
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*
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* @param[in] parent_dev_hdl Parent device handle (is used to get the External Hub handle)
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* @param[in] parent_port_num Parent number (is used to specify the External Port)
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*
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* @return
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* - ESP_OK: Port has been disabled without error
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* - ESP_ERR_INVALID_STATE: Port can't be disabled in current state
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* - ESP_ERR_NOT_SUPPORTED: This function is not support by the selected port
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*/
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esp_err_t hub_port_disable(usb_device_handle_t parent_dev_hdl, uint8_t parent_port_num);
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/**
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* @brief Notify Hub driver that new device has been attached
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*
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* If device is has a HUB class, then it will be added as External Hub to Hub Driver.
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*
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* @note This function should only be called from the Host Library task
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* @note If the Hub support feature is disabled and device has a Hub class, only the warning message will be shown.
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*
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* @param[in] dev_addr Device bus address
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*
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* @return
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* - ESP_OK: New device added successfully
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* - ESP_ERR_INVALID_STATE: Hub driver is not in a correct state
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*/
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esp_err_t hub_notify_new_dev(uint8_t dev_addr);
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/**
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* @brief Notify Hub driver that device has been removed
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*
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* If the device was an External Hub, then it will be removed from the Hub Driver.
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*
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* @note This function should only be called from the Host Library task
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* @note If the Hub support feature is disabled, no additional logic requires here.
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*
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* @param[in] dev_addr Device bus address
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*
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* @return
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* - ESP_OK: A device removed successfully
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* - ESP_ERR_INVALID_STATE: Hub driver is not in a correct state
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*/
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esp_err_t hub_notify_dev_gone(uint8_t dev_addr);
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#if ENABLE_USB_HUBS
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/**
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* @brief Notify Hub driver that all devices should be freed
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*
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* @note This function should only be called from the Host Library task
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*
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* @return
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* - ESP_OK: All the devices can be freed
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* - ESP_ERR_INVALID_STATE: Hub driver is not in a correct state
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*/
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esp_err_t hub_notify_all_free(void);
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#endif // ENABLE_USB_HUBS
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/**
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* @brief Hub driver's processing function
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*
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* Hub driver handling function that must be called repeatedly to process the Hub driver's events. If blocking, the
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* caller can block on the notification callback of source USB_PROC_REQ_SOURCE_HUB to run this function.
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*
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* @return
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* - ESP_OK: All events handled
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*/
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esp_err_t hub_process(void);
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#ifdef __cplusplus
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}
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#endif
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