/* * Copyright (c) 2022 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. * * @version 1.0 */ package ohos.hdi.usb.v1_0; /** * @brief Defines the callback for reporting usb data. This callback needs to be registered when * a usb user subscribes to usb data. Only after the usb is enabled, the usb data subscriber can receive * usb data. For details, see {@link IUsbInterface}. * * @since 3.2 */ [callback] interface IUsbdBulkCallback { OnBulkWriteCallback([in] int status, [in] int actLength); OnBulkReadCallback([in] int status, [in] int actLength); }