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https://github.com/espressif/esp-idf.git
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f5f3196c01
This commit refactors the USBH and the USB Host Library in the following ways:
- USBH now presents an abstraction of an endpoint (via usbh_ep_handle_t)
- Added separate functions to enqueue/dequeue URBs to a particular endpoint
- USB Host Library no longer calls HCD API directly. Calls USBH endpoint API
instead.
- Renamed "notif_cb" to "proc_req_cb" (Processing Request Callback)
- This is to avoid confusion with FreerTOS task notifications and Host
Library client event notifications.
- The processing functions of each layer (i.e., "xxx_process()") request
calls via the "proc_req_cb"
- The main handling function (i.e., usb_host_lib_handle_events()) is
responsible for calling the required "xxx_process()" of each layer
89 lines
1.9 KiB
C
89 lines
1.9 KiB
C
/*
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* SPDX-FileCopyrightText: 2015-2021 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 "esp_err.h"
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#include "usb_private.h"
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#include "usbh.h"
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#ifdef __cplusplus
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extern "C" {
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#endif
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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_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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* @return esp_err_t
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*/
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esp_err_t hub_install(hub_config_t *hub_config);
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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 esp_err_t
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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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* @return esp_err_t
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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 esp_err_t
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*/
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esp_err_t hub_root_stop(void);
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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 repeatdly 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 esp_err_t
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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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