VxWorks下增强型网络驱动实现的分析

VxWorks下增强型网络驱动-END(Enhanced Network Driver)是一个数据链路层驱动程序,通过MUX函数与网络协议层通讯。本文分析了VxWorks实时操作系统下增强型网络驱动-END(Enhanced Network Drivers)的实现原理。     

基于MUX接口的嵌入式网络应用程序设计

针对风河公司的嵌入式实时操作系统（VxWorks）的网络驱动及应用程序开发设计,介绍了VxWorks的增强型网络驱动程序（END）及其结构,对工作在END和网络协议层之间的多元接口层（Mux）的工作原理和程序设计框架进行了详细论述,并结合在VxWorks系统下发送UDP广播包的实例,给出了基于MUX接口的嵌入式网络应用程序设计流程,对所有基于MUX机制下的VxWorks网络应用程序的开发具有参考价值。     

VXWORKS下PCI总线多功能I/O采集设备驱动程序的开发

本文介绍了嵌入式操作系统VxWorks下PCI总线下多功能IO采集卡驱动程序的开发过程。分析了VxWorks操作系统下设备驱动程序在系统中的层次结构和PCI设备驱动程序的运行机制。     

基于VxWorks的网络增强型驱动分析与实现

网络驱动的开发是基于VxWorks的嵌入式应用的重要组成部分;VxWorks提供了多路复用层(MUX)接口来实现增强型网络驱动(END)的开发,具有协议无关性特点,可使开发人员专注于驱动程序的开发而无需考虑上层协议的内容,利用这种方法对RTL8139网卡的END开发进行了研究;首先阐述了END的数据结构和接口函数,然后着重分析了BSP中相关文件的配置,最后对驱动的加载启动过程及数据包的存储收发过程作了介绍;对于VxWorks下基于MUX机制的其它网卡驱动的开发具有参考价值。     

VxWorks下网卡驱动程序的开发

本文首先从整体上分析VxWorks网卡驱动程序的原理和结构，然后深入地分析Rt18139C网卡驱动程序的结构以及实现，本文对于VxWorks下的同类开发也有一定参考作用。     

Vx Works END网络驱动软件的开发与实现

网络资源的广泛、便捷和资源共享等优势使得网络技术在各个领域的应用越来越广泛,嵌入式系统也不例外,但是嵌入式操作系统自身支持的网卡设备不是太多,这就极大的限制了嵌入式实时操作系统VxWorks对网络资源的使用,因此对VxWorks网络驱动软件的开发就成为了当下的热点和难点。在这里详细介绍了一种基于MUX下END型网络驱动软件的开发过程,对板级支持包BSP的配置和功能以及MUX在VxWorks END网络驱动软件中的作用进行了详细的研究和论述,并结合实践中用到的RTL8139D型的网卡在VxWorks实时操作系统下驱动程序的开发为例,给出了END驱动程序的基本框架和开发流程,对所有基于MUX机制下的VxWorks网络驱动软件开发具有参考价值。     

实时操作系统VxWorks下的路由器驱动程序设计

介绍了VxWorks下的网络设备接口驱动程序结构。阐述了主从分布式核心路由器的驱动程序总体结构。针对采用网络处理器的"集中控制、分布转发"的高性能路由器，提出了驱动程序的总体设计方案。     

基于VxWorks的PXI板卡驱动程序开发

对嵌入式实时系统VxWorks中的设备驱动程序开发进行了简要的介绍,讨论了VxWorks操作系统下的I/O系统和设备驱动程序、应用程序之间的关系,说明了VxWorks下与一般操作系统下驱动程序设计的不同;另外根据作者开发PCI9054数据通信卡驱动程序的实践,讨论了VxWorks下PXI设备驱动程序的框架;根据设备驱动程序的功能,将其分为初始化、中断挂接、中断处理、DMA块读写等几大模块,并详细说明了这些模块的具体实现.     

基于VxBus和MPC8569E千兆网驱动开发和实现

随着嵌入式操作系统VxWorks在国内外各种领域越来越广泛的应用,如何让VxWorks支持各种硬件平台成了亟待解决的问题;特别是随着大量网络应用的出现,嵌入式系统下的千兆网络驱动是研究开发的热点;文章介绍了设备驱动相关的一些基础知识,分析了VxWorks 6.X最新引进的VxBus驱动程序框架,并对MUX在VxWorks END网络驱动软件中的作用进行了详细的研究和论述;最后,阐述了如何在VxBus中实现MPC8569E的千兆以太网MAC控制器(UCC)的驱动,给出了UCC的END驱动程序开发流程,对所有基于VxBus的框架下的网络驱动软件开发具有参考意义。     

VxWorks END网络驱动软件的开发与实现

网络资源的广泛、便捷和资源共享等优势使得网络技术在各个领域的应用越来越广泛,嵌入式系统也不例外,但是嵌入式操作系统自身支持的网卡设备不是太多,这就极大地限制了嵌入式实时操作系统VxWorks对网络资源的使用,因此对VxWorks网络驱动软件的开发就成为了当下的热点和难点;在详细介绍了一种基于MUX下END型网络驱动软件的开发过程,对板级支持包BSP的配置和功能以及MUX在VxWorks END网络驱动软件中的作用进行了详细的研究和论述,并结合实践中用到的RTL8139D型的网卡在Vx-Works实时操作系统下驱动程序的开发为例,给出了END驱动程序的基本框架和开发流程,对所有基于MUX机制下的VxWorks网络驱动软件开发具有参考价值。     

Only connect: teaching, technology and telesis

Abstract This paper describes an approach to the design of interactive multimedia materials being developed in a European Community project. The developmental process is seen as a dialogue between technologists and teachers. This dialogue is often problematic because of the differences in training, experience and culture between them. Conditions needed for fruitful dialogue are described and the generic model for learning design used in the project is explained.     

European Community policy and the market

Abstract This paper starts with some reflections on the policy considerations and priorities which are shaping European Commission (EC) research programmes. Then it attempts to position the current projects which seek to capitalise on information and communications technologies for learning in relation to these priorities and the apparent realities of the marketplace. It concludes that while there are grounds to be optimistic about the contribution EC programmes can make to the efficiency and standard of education and training, they are still too technology driven.     

一种自适应子融合集成多分类器方法

融合集成方法已经广泛应用在模式识别领域,然而一些基分类器实时性能稳定性较差,导致多分类器融合性能差,针对上述问题本文提出了一种新的基于多分类器的子融合集成分类器系统。该方法考虑在度量层融合层次之上通过对各类基多分类器进行动态选择,票数最多的类别作为融合系统中对特征向量识别的类别,构成一种新的自适应子融合集成分类器方法。实验表明,该方法比传统的分类器以及分类融合方法识别准确率明显更高,具有更好的鲁棒性。     

煤矿井下安全监控分站的设计及其仿真实现

为了设计一种具有低成本、低功耗、易操作、功能强且可靠性高的煤矿井下安全分站,针对煤矿安全生产实际,文章提出了采用MCS-51系列单片机为核心、具有CAN总线通信接口的煤矿井下安全监控分站的设计方案;首先给出煤矿井下安全监控分站的整体构架设计,然后着重阐述模拟量输入信号处理系统的设计过程,最后说明单片机最小系统及其键盘、显示、报警、通信等各个组成部分的设计;为验证设计方案的可行性与有效性,使用Proteus软件对设计内容进行仿真验证,设计的煤矿井下安全监控分站具有瓦斯、温度等模拟量参数超标报警功能和电机开停、风门开闭等开关量指示功能;仿真结果表明:设计的煤矿井下安全监控分站具有一定的实际应用价值.     

Avoiding semantic and temporal gaps in developing software intensive systems

Development of software intensive systems (systems) in practice involves a series of self-contained phases for the lifecycle of a system. Semantic and temporal gaps, which occur among phases and among developer disciplines within and across phases, hinder the ongoing development of a system because of the interdependencies among phases and among disciplines. Such gaps are magnified among systems that are developed at different times by different development teams, which may limit reuse of artifacts of systems development and interoperability among the systems. This article discusses such gaps and a systems development process for avoiding them.     

基于QTE的蒙古文显示机制研究与实现

蒙古语言是中国蒙古族使用的通用语言,由于蒙古文区别于其他文字的书写方式和其自身变形机制等特点,在很多通用的文字处理引擎中都不被支持。在嵌入式产品开发与应用领域中Linux加QTE已经成为流行方式。该文给出了一种在QTE环境上实现基于标准Unicode的蒙古文点阵显示和变形算法, 并自定义了支持蒙古文的QTE组件,扩展了QTE功能,为在Linux加QTE方式的嵌入式体系结构中处理蒙古文提供了一种解决方法。     

Designing economic np control charts: A programmed simulation approach

This paper presents control charts models and the necessary simulation software for the location of economic values of the control parameters. The simulation program is written in FORTRAN, requires only 10K of main storage, and can run on most mini and micro computers. Two models are presented - one describes the process when it is operating at full capacity and the other when the process is operating under capacity. The models allow the product quality to deteriorate to a further level before an existing out-of-control state is detected, and they can also be used in situations where no prior knowledge exists of the out-of-control causes and the resulting proportion defectives.     

基于AD9626的模拟信号采集存储卡设计

自然界的绝大部分信号都是以模拟的形式存在,因此模拟信号的采集转换存储在数字时代十分关键。文章讨论了在雷达信号处理领域基于AD9626的AD采集存储卡的设计原理、硬件结构和程序设计与芯片配置等问题,为今后相关领域的研究提供了可参考的方案。     

The development of robot art

Going through a few examples of robot artists who are recognized worldwide, we try to analyze the deepest meaning of what is called “robot art” and the related art field definition. We also try to highlight its well-marked borders, such as kinetic sculptures, kinetic art, cyber art, and cyberpunk. A brief excursion into the importance of the context, the message, and its semiotics is also provided, case by case, together with a few hints on the history of this discipline in the light of an artistic perspective. Therefore, the aim of this article is to try to summarize the main characteristics that might classify robot art as a unique and innovative discipline, and to track down some of the principles by which a robotic artifact can or cannot be considered an art piece in terms of social, cultural, and strictly artistic interest. This work was presented in part at the 13th International Symposium on Artificial Life and Robotics, Oita, Japan, January 31–February 2, 2008     

A human-computer interface for non-computer specialists

The COM teleconferencing system was designed to be easy to use for both beginners and people with much computer experience. A number of design choices in organizing the human-computer interface were considered very carefully. These design problems are not unique for teleconferencing applications, but will appear in many other developments of human-computer interfaces for non-computer specialists. This report discusses naming conventions, menu format, user commands, help facility and the treatment of ‘type ahead’ from the users.