基于Openocd的嵌入式软件开发平台的研究和设计

在以Openocd为调试代理的基础上,研究一种嵌入式源码级编译调试开发平台,并在多目标机上实现;该开发平台以Eclipse为调试前端,实现了与通用远程调试器GDB的无缝集成,并以Openocd作为调试代理,可以通过JTAG接口实现对目标机上目标程序的源代码调试;阐述了基于Openocd的嵌入式软件源码级交叉调试技术,讨论了宿主机/目标机开发模式中源码级调试的原理和方法。     

龙芯3A平台上Linux应用程序本地开发环境的实现

应用于高性能计算和服务器的龙芯3ACPU拥有丰富的资源和优秀的性能。与交叉开发环境相比,在龙芯3A平台上使用本地开发环境进行应用程序的开发会更方便、更高效。基于模拟器Qemu和Debian for MIPS操作系统,在＂龙芯3A＂平台上成功创建了本地开发环境,给出了详细的创建方法与步骤。     

基于国产平台的智能跟踪调试技术

随着龙芯、飞腾、申威等国产处理器的诞生,目前涌现出了一批支持国产处理器的国产操作系统,如JARI-Works、中标麒麟等.但是,与国产软硬平台配套的调试工具发展却相对滞后,严重制约着国产平台下的软件调试效率.本文针对国产软硬平台,设计了一种基于Eclipse平台的智能调试方案.通过在Eclipse平台下集成面向国产平台的工具链和智能跟踪调试插件,自动启动并智能跟踪调试流程,从而实现调试功能的图形化和智能化,进而构建出一套界面友好、使用便捷、自主可控的集成开发环境.通过实验表明,该调试方案能够有效简化调试流程,提高国产平台下的软件调试效率.     

从Tornado到Workbench --风河公司的新一代嵌入式软件集成开发环境

1嵌入式系统开发所面临的问题嵌入式软件开发有别于桌面软件系统开发的一个显著特点是,它一般需要一个交叉编译和调试环境,即编辑和编译软件在主机上进行(如在PC机的Windows操作系统下),编译好的软件需要下载到目标机上运行(如在一个PPC目标机上的VxWorks操作系统下),主机和目标机建立起通信连接,并传输调试命令和数据。由于主机和目标机往往运行着不同的操作系统,而且处理器的体系结构也彼此不同,这就提高了嵌入式开发的复杂性。总的来说,嵌入式开发所面临的问题主要表现在以下几个方面。(1)涉及多种CPU及多种OS嵌入式的CPU或处理器…     

面向RTEMS的嵌入式软件集成开发环境

实现面向RTEMS的嵌入式软件集成开发环境,提高嵌入式应用程序的可靠性和开发效率。在编译过程中添加缓冲区溢出动态检测模块,从而在程序运行过程中检测到缓冲区溢出,提高了程序可靠性。利用插桩技术实现远程调试环境,结合能对RTEMS进行定制的集成开发环境,提高了嵌入式应用程序的开发和调试效率,缩短了开发周期。     

基于ARM9的触摸屏驱动开发及LCD显示程序设计

选择HHARM9-EDU多功能教学实验系统作为目标平台,并根据嵌入式系统开发的要求,建立了基于目标平台的交叉编译环境.在研究了嵌入式Linux的进程管理与调度,中断响应和处理,嵌入式Linux的内核实现机制,驱动程序的编写方法等内容后,开发了触摸屏驱动程序,并编写了两个实现不同功能的LCD显示应用程序,最后结合硬件平台调试成功.     

Spectra平台的开放式体系结构

一、引言随着嵌入式计算机系统的发展，系统规模越来越大，复杂性越来越强，对嵌入式系统软件开发提出了更高的要求，系统开发需要有集编辑、编译、连接、调试。仿真和评测等功能为一体的嵌入式开发环境支持。从80年代初期开始，国外推出了第一、二代实时嵌入式开发环境，实现了交叉编译和调试工具的集成，可提供较强的源码级调试，能对目标机上的实时操作系统（RTOS）进行系统监控；在宿主机和目标机间提供了基干网络的连接，加快系统下载速度。这些功能基本满足了嵌入式系统的开发，但仍存在一些不足，主要是：系统体系结构上没对功能作…     

嵌入式软件集成开发环境关键技术研究

通过对Eclipse插件CDT的编译构建系统模型的研究,提出一种基于该模型的编译工具链的集成和自动编译技术,并针对航天器控制软件的特点,结合CDT调试系统,为航天器控制软件的开发提供一个集成化的调试环境.从嵌入式交叉编译和远程调试两个技术层面介绍了一个基于开放Eclipse平台的嵌入式软件集成开发环境.     

基于龙芯3A平台PMON中的网卡驱动设计与实现

龙芯3A平台采用PMON作为其基本输入输出系统(BIOS),为了在PMON中实现通过网络加载操作系统镜像的功能,设计实现了PMON下的W82574网卡驱动;由于PMON采用查询代替中断,没有所谓中断处理程序;在网卡驱动设计时,对初始化、数据发送和接收两部分作出相应处理,并介绍了PMON下网卡驱动的配置编译过程;通过测试,该PMON的网络性能具有丢包率低、响应速度快的特点,并且能够支持网络加载VxWorks和Linux操作系统,最终实现了网络性能稳定、功能完善、可靠性高的基于龙芯3A平台的BIOS。     

基于X8632位CPU的开放式实验平台设计

开发开放式实验平台,不仅能实现与现有教学内容相匹配,而且能让学生深入理解和掌握X86 32位CPU的工作原理和接口技术,对提高教学质量具有非常重要的意义.文中设计的开放式平台,基于486系列CPU,采用Verilog语言实现总线时序和控制逻辑,具有8位/16位/32位操作特性以及可扩展功能.软件平台包括PC宿主机集成操作环境软件和开放平台目标机固件程序.集成环境调试软件支持汇编语言实模式程序和保护模式程序,也支持C语言程序的编辑、编译和符号化调试.     

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。     

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     

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.     

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.