USB Class的介绍 USB 类是一组设备(或接口),它们具有某些共同属性或服务。 USB 类被定义为允许制造商构建产品,而不必为USB 主机 usb STM32 CDC 下载并关注上传者 开通VIP,低至0.08元下载/次 下载资料需要登录,并消耗一定积分。 声明:本文内容及配图由入驻作者撰写或者入驻合作网站授权转载。文章观点仅代表作者本人
uchar bDescriptorType; //设备描述符类型编号 uint bcdUSB; //USB版本号 uchar bDeviceClass; //USB分配的设备类 uchar bDeviceSubClass; //USB分配的设备子类 uchar bDeviceProtocol; //USB分配的设备协议代码 uchar bMaxPacketSize0; //端点0的最大包大小 uint idVendor; //厂商编号 uint idProduct; //...
Video Class位于USB协议的Interface级,Interface 描述符中Class code为0xE,其下面分为4个Subclass: Undefined:0x0 VC Interface Subclass:0x1(VC的USB Interface Deor中Subclass标记为此值)。 VS Interface Subclass:0x2(VS的USB Interface Deor中Subclass标记为此值)。 Video Interface Collection Subclass:0x3(IAD的US...
USB class indicating that the class is determined on a per-interface basis. Audio 1 USB class for audio devices. Comm 2 USB class for communication devices. Hid 3 USB class for human interface devices (for example, mice and keyboards). Physica 5 USB class for physical devices. StillImage ...
USB Audio Class,USB音频类,一个像USB这样的通用数据接口,可以有很多种实现数字音频数据传输的方式。不同的开发者可以根据自己的喜好和需求,定义任意的控制方式,传输模式,音频格式等等参数。 USB非常适合作为以PC为平台的音频(包括语音和音乐等)传输协议,而基于PC的电话系统从一开始就是USB接口发展的重要考量和推动力...
mechanism to enable bulk or isochronous transfer on the USB when the data does not meet the requirementsfor any other class.1.1 ScopeGiven the broad nature of communication equipment, this specification does not attempt to dictate how allcommunication equipment should use the USB. Rather, it ...
propertyDescription name = System.DeviceInterface.WinUsb.UsbClass shellPKey = PKEY_DeviceInterface_WinUsb_UsbClass formatID = 95E127B5-79CC-4E83-9C9E-8422187B3E0E propID = 4 SearchInfo InInvertedIndex = false IsColumn = false typeInfo type = Byte ...
.bDeviceClass = USB_CLASS_PER_INTERFACE, .idVendor = cpu_to_le16(DRIVER_VENDOR_NUM), .idProduct = cpu_to_le16(DRIVER_PRODUCT_NUM), .bNumConfigurations = 1, }; 设备描述符没什么特殊的,因为PC端usb驱动是与设备的接口对应的,与mass storage class对应的是接口描述符 ...
USB Class-Specific Requests Set Report Allows the host to send a report to the device. Offset Field Size Value Description 0 bmRequestType 1 21h 4..0: Recipient …00001 Interface 6..5: Type .01….. Class 7: Direction 0……. Host-to-Device...
USB Host supporting any Device Class The Custom Class for USB Host has two use cases: Implementing/supporting a standard Device class other than CDC, HID and MSC (also CDC, HID and MSC class handling can be overridden). Implementing/supporting a vendor specific Device class. Supporting Custom ...