/* * Copyright (c) 2025 Huawei Device Co., Ltd. * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ /* * * @addtogroup HdiUsb * * @brief Provides unified APIs for usb services to access usb drivers. * * A usb service can obtain a usb driver object or agent and then call APIs provided by this object or agent to * access different types of usb devices based on the usb IDs, thereby obtaining usb information, * subscribing to or unsubscribing from usb data, enabling or disabling a usb, * setting the usb data reporting mode, and setting usb options such as the accuracy and measurement range. * * @since 5.1 */ /* * * @file IUsbInterface.idl * * @brief Declares the APIs provided by the usb module for obtaining usb information, subscribing to or * unsubscribing from usb data, enabling or disabling a usb, setting the usb data reporting mode, * and setting usb options such as the accuracy and measurement range. * * @since 5.1 * @version 1.0 */ package ohos.hdi.usb.v1_2; import ohos.hdi.usb.v1_2.UsbTypes; import ohos.hdi.usb.v1_2.IUsbdTransferCallback; import ohos.hdi.usb.v1_1.UsbTypes; import ohos.hdi.usb.v1_1.IUsbInterface; /* * * @brief Defines the functions for performing basic operations on usb. * * The operations include obtaining usb information, subscribing to or unsubscribing from usb data, * enabling or disabling a usb, setting the usb data reporting mode, and setting usb options such as * the accuracy and measurement range. */ interface IUsbInterface extends ohos.hdi.usb.v1_1.IUsbInterface{ /* * * @brief Submit usb async transfer. * * @param dev Indicates the USB device address. * @param info Indicates the param info of the USB transfer. * @param cb Indicates the callback function of base. * @param ashmem Indicates the object of share memory * * @return Returns 0 if the operation is successful; returns a non-0 value if the operation fails. * @since 5.1 * @version 1.0 */ UsbSubmitTransfer([in] struct UsbDev dev, [in] USBTransferInfo info, [in] IUsbdTransferCallback cb, [in] Ashmem ashmem); /* * * @brief Cancels the usb async transfer by endpoint. * * @param dev Indicates the USB device address. * @param endpoint Indicates the endpoint address. * * @return Returns 0 if the operation is successful; returns a non-0 value if the operation fails. * @since 5.1 * @version 1.0 */ UsbCancelTransfer([in] struct UsbDev dev, [in] int endpoint); }