UsbTypeClass Used to specify that an endpoint zero control request is a class specific request. UsbTypeMask Bitmask used for encoding the request type for a control request on endpoint zero. UsbTypeReserved Reserved endpoint zero control request type (currently unused). UsbTypeStandard Used ...
uchar bLength; //设备描述符的字节数 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 idVe...
class分为device class和interface class。具体的class值以及含义,参考define class。 https://www.usb.org/defined-class-codes class 包含 class subclass protocol 组合在一起,用来指出设备具体功能。 device class举例 DEVICE DESCRIPTOR bLength: 18 bDescriptorType: 0x01 (DEVICE) bcdUSB: 0x0200 bDeviceClass:...
(BLE) class1 传输距离:10m3G/4G LTE FDD: B1/B3/B5/B7/B8/B20;LTE TDD: B38/B40/B41;WCDMA: B1/B5/B8;GSM: B3/B8定位U-BloxM7N可选U-BLOX M8N机器接口 USB*1,Type-C USB2.0支持OTGUSB*1,Type-A USB2.0RJ45网口*1, 100MbpsRS232*1 3PINRS232DC*1,DC 5V/3AHDMI*1,Mini HDMI航插*2,...
首先我们要了解Type-C连接模式: AlternateMode﹝替代模式﹞ 例如PD充电,影像传输﹝DP Alt Mode﹞ BillboardDevice Class 当支持Alternate Mode的装置连接到不支持的Host装置时,Windows会跳出Billboard告知装置状态。Billboard的功能便在于告知使用状态,例如告知用户此装置无法支持Alternatemode。
USB\Class_01 并且具有以下排除项: INF USB\Class_01&SubClass_00&Prot_20 USB\Class_01&SubClass_01&Prot_20 USB\Class_01&SubClass_02&Prot_20 USB\Class_01&SubClass_03&Prot_20 由于Windows 音频堆栈的限制,共享模式下不支持任意数量的声道(大于 8 个)。
{ UsbDevice device; UInt32 readLen =8;// Get the UsbDevice object. Not shown... UsbInterface myInterface =null;/// Need to find this descriptor after an interface descriptor:/// ===>Class-Specific Video Control Interface Header Descriptor<===// bLength: 0x0D// bDescriptorType: 0x24...
For information about USB device classes, see the official USB Website forApproved Class Specification Documents. C# [Windows.Foundation.Metadata.ContractVersion(typeof(Windows.Foundation.UniversalApiContract),65536)] [Windows.Foundation.Metadata.MarshalingBehavior(Windows.Foundation.Metadata.MarshalingType.Agile...
A class representing a USB accessory, which is an external hardware component that communicates with an android application over USB. The accessory is the USB host and android the device side of the USB connection. When the accessory connects, it reports its manufacturer and model names, the ver...