About USB Data Link Cable API The text on this webpage is licensed under the Creative Commons Attribution-Sharealike 3.0 Unported License (CC-BY-SA) and  GNU Free Documentation License About USB Data Link Cable Application Programming Interface (API)…

数据链路层( Data Link) 链路:从1个节点到相邻节点的一段物理线路(有线或无线),中间没有其他交换节点 案例 上图可以看出,总共由5条链路组成: 第1条:计算机0 => 路由器0,使用CSMA/CD协议,中间虽然有经过集线器,但集线器没有任何功能,就相当于一条网线 第2条:路由器0 => 路由器1,使用PPP协议 第3条:路由器1 => 路由器2,使用PPP协议,与上一条的数据有区别就是目标MAC与源MAC地址都会发生变化 第4条:**路由器2 ** => 交换机0,使用…

要更改EF中的默认配置有两个方法,一个是用Data Annotations(在命名空间System.ComponentModel.DataAnnotations;),直接作用于类的属性上面;还有一个就是Fluent API,通过新增相应的配置类来覆盖默认配置.现在我们用这两个来对比了解EF中的约定配置. 主键:KEY Data Annotations:通过Key关键字来标识一个主键 [Key]public int DestinationId { get; set; }Fluent API: pu…

For bulk and interrupt transfers, the data toggle resets <0> only on Set Configuration, Set Interface, and Clear Feature(Endpoint Halt). For isochronous transfers, the data toggle always is <0> and no ACK For control transfers, OUT Endpoint : …

The following analysis was performed on a S8 data line locator which replied to the hidden SMS command for version query (*3646655*) with: Ver=MTK6261M.T16.17.01.10 build=2017/01/10 17:33 Introduction A while back Joe Fitz tweeted about the S8 data l…

Reference: Working with APIs Many big companies and organizations provide API for us to retrieve data, and we use  requests library to get data with Json format from them. 1: Type of requests There are many types of request for getting data, We can u…

By Daniel Du In View and Data client side API, The assets in the Autodesk Viewer have an object tree, a tree structure that represents the model hierarchy. Each element in model can be representing as a node of model tree. Each node has a dbId, this…

using System; using System.Drawing; using System.Drawing.Printing; using System.IO; using System.Runtime.InteropServices; using System.Windows.Forms; public class RawPrinterHelper { // Structure and API declarions: [StructLayout(LayoutKind.Sequential…

翻译Android USB HOST API 源代码地址:http://developer.android.com/guide/topics/connectivity/usb/host.html 译者注:翻译的好不好不是太重要,重点是在翻译的过程中会把每句话都看认真看一遍,或者说是抱着翻译的思想来完毕一个读懂的目的. USB Host通信 当你的可供电Android设备处理USB host模式时,它担任着为USB总线供电,枚举连接的USB从设备等等一个主设备应用的工作. Android 3.1及…

User issue: I'm using a Nexiq USB link with CAT ET 2011b and I need some help with connection settings. I was getting the error code 149 with CAT ET when trying to connect to an excavator yesterday. Since then, I've updated the drivers for the USB li…