General Introduction The communication interface to the reader can be configured in two ways: with a eight line parallel interface (D0:D7) plus DATA_CLK, or with a three or four wire Serial Peripheral Interface (SPI). The SPI interface uses tradition…

Communication Device Class,简称CDCUSB Compound Device,USB复合设备USB Composite Device,USB组合设备 摘要USB复合设备 Compound Device内嵌Hub和多个Function,每个Function都相当于一个独立的USB外设,有自己的PID/VID.USB组合设备Composite Device内只有一个Function,只有一套PID/VID,通过将不同的interface定义为不同的类来实现多个功能的组合.…

全文地址:http://justmei.blog.163.com/blog/static/1160998532010321112522467/ 什么是CDC类 (Communication Device Class) USB的CDC类是USB通信设备类 (Communication Device Class)的简称.CDC类是USB组织定义的一类专门给各种通信设备(电信通信设备和中速网络通信设备)使用的USB子类.根据CDC类所针对通信设 备的不同,CDC类又被分成以下不同的模型:USB传统纯电…

http://articles.mopar1973man.com/general-cummins/34-engine-system/81-ccd-data-bus CCD (Chrysler Collision Detection) Data Bus Description The Chrysler Collision Detection (also referred to as CCD or C2D ) data bus system is a multiplex system used fo…

1 嵌入式操作系统 为什么要用嵌入式操作系统 普通的单片机编程:程序(软件)--单片机硬件: 嵌入式操作系统开发:程序(软件)--操作系统--嵌入式硬件(包括单片机等); 我们平时普通所学的单片机编程开发,一般情况下都需要对单片机的片载资源进行了解,了解IO口.PWM发生器.中断.定时器.串口等常用的内部资源,然后一般采用C编程的面向过程编程,程序的运行过程从进入入口函数开始运行,是顺序执行的.单片机的开发,相对来说比较简单,但是不同的单片机,要实现相同的功能,其内部程序必然存在差别,也就是所说…

http://blog.csdn.net/wdsfup/article/details/52302142 http://www.manew.com/blog-166674-12962.html Gentoo LinuxGentoo内核(gentoo-sources)特有的选项 Gentoo Linux supportCONFIG_GENTOO_LINUX 选"Y"后,将会自动选中那些在Gentoo环境中必须开启的内核选项,以避免用户遗漏某些必要的选项,减轻一些用户配置内核的难度.建议选…

A method and apparatus enable Internet of Things (IoT) services based on a SMART IoT architecture by integrating connectivity, content, cognition, context, cloud, and collaboration. Joint optimization of a combination of any of connectivity, content,…

In particular embodiments, a method includes, from an indexer in a sensor network, accessing a set of sensor data that includes sensor data aggregated together from sensors in the sensor network, one or more time stamps for the sensor data, and metad…

============================================================================== 深入linux kernel内核配置选项 ============================================================================== 如果自己不亲自实践配置的话,你永远也体会不到内核的真实所在. 使用过linux的发行版之一gentoo的话,你应该知道这是一个彻头彻尾的自定义…

Introduction Log files are files that contain messages about the system, including the kernel, services, and applications running on it. There are different log files for different information. For example, there is a default system log file, a log f…