飞思卡尔MC9S08AW60最小系统设计与实现

Freescale公司的HCS08系列MC9S08AW60是一款高性能的8位微控制器。评估板包含MC9S08AW60最小系统、BDM写入调试接口、串行通信接口、与扩展板连接的扩展插口。介绍MC9S08AW60最小系统的硬件设计及软件调试,并给出软件程序设计思想主体流程。     

ColdFire系列微处理器BDM调试系统的设计与实现

ColdFire系列微处理器是Freescah 32位微处理器的主流产品,采用先进的BDM调试接口技术.在分析了BDM接口特点、通信时序基础上,提出了BDM调试器基于CPLD器件的硬件设计方案,阐述了BDM调试系统驱动程序设计方法.本设计方法在实际中取得了良好的使用效果.     

S12单片机BDM调试器使用技巧

全国大学生"飞思卡尔杯"智能汽车竞赛推荐使用Freescale公司的MC9S12系列单片机为主控芯片;有USB接口的TTBDM调试器是主要软件调试工具。TTBDM调试器通过USB接口与PC通信,BDM接口与目标CPU通信,实现嵌入式软件的在线调试。根据往届车模竞赛中参赛者遇到的一些问题和本中心在长期支持国内S12系列单片机用户中积累的经验,总结出BDM调试器的用法和注意事项,提供一些使用技巧,以求对参赛者和S12产品开发工程师有所帮助。     

基于USB的DSP高速数据传输系统

介绍了在TMS320C32系列DSP上,利用EZ-USBFX2微控制器扩展USB接口的技术,实现了DSP与计算机之间的高速数据传输。     

飞思卡尔S08系列机器码文件下载软件的开发

嵌入式产品进入生产过程以后,需要一款将机器码文件下载到目标芯片中的软件。下载软件通常使用USB接口与调试器通信,调试器使用JTAG或BDM接口与目标芯片通信。飞思卡尔S08系列芯片的机器码文件是S19记录,是一种基于字符形式的可执行文件记录格式。使用飞思卡尔开源的BDM调试器,设计并实现了S19记录的下载软件。文中分析了开源调试器的接口,分析了下载流程并设计了参数可配置的Flash下载程序。此外,文中详细阐述了下载过程中对目标芯片RAM的划分。该设计的下载软件利用XML配置文件实现了对飞思卡尔S08系列所有芯片的下载支持。     

意法半导体（ST）推出STM32互联系列微控制器

微控制器厂商意法半导体宣布最新的STM32互联系列（Connectivity Line）微控制器已全面投产,如期上市。STM32互联系列让设计人员可以在同时需要以太网、USB、CAN和音频级I^2S接口的产品设计中发挥工业标准的32位微处理器的优异性能。目前互联系列下设2个产品系列：STM32F105和STM32F107。     

意法半导体(ST)推出STM32互联系列微控制器

<正>内置以太网、USB OTG、CAN2.0B和音频级I~2S接口STM32系列第4个产品线的适时推出反映微控制器产品开发蓝图的稳健步伐强调高集成度、高设计灵活性和快速上市时间2009年6月22日,微控制器全球领导厂商意法半导体宣布最新的STM32互联系列微控制器已全面投产,基于ARM Cortex~(TM)-M3处理器的这款新产品如预期准时上市。STM32互联系列让设计人员可以在同时需要以太     

基于微控制器的总线型压力测控系统设计

现场总线控制系统的推广和应用,迫切需要自主开发总线型智能仪表来替代传统仪表.本文选用带有CAN总线接口的68HCSl2系列微控制器和MPX5000系列压力传感器,开发了一种基于微控制器的总线型压力测控系统.硬件设计方面主要包括微控制器模块、传感器模块、液晶显示模块、通信模块、电源模块以及仪表的抗干扰措施的设计;软件方面运用模块化设计方法,绘制了程序流程图,采用汇编语言与C语言混合编写.     

波特率自适应的无线数据传输模块设计

介绍基于nRF401无线数据传输芯片的数据传输模块的设计与实现,给出微控制器与nRF401芯片的接口原理图;解决了微控制器串行口不足的问题,用软件模拟实现了一个串行口,并得出了51系列单片机波特率自适应功能的定时器初值设定方法,给出了计算公式.     

简讯

飞利浦首推基于ARM9的90 nm微控制器系列2005年3月28日,皇家飞利浦电子公司在2005年飞利浦半导体微控制器研讨会上宣布,利用其一直以来对90 nm技术的承诺及技术专长,推出基于ARM9系列的90 nm 32位微控制器系列。LPC3000系列基于飞利浦的 Nexperia平台,采用飞利浦、飞思卡尔半导     

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.     

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.     

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     

Explanation and prediction: an architecture for default and abductive reasoning

Although there are many arguments that logic is an appropriate tool for artificial intelligence, there has been a perceived problem with the monotonicity of classical logic. This paper elaborates on the idea that reasoning should be viewed as theory formation where logic tells us the consequences of our assumptions. The two activities of predicting what is expected to be true and explaining observations are considered in a simple theory formation framework. Properties of each activity are discussed, along with a number of proposals as to what should be predicted or accepted as reasonable explanations. An architecture is proposed to combine explanation and prediction into one coherent framework. Algorithms used to implement the system as well as examples from a running implementation are given.     

Three Process Perspectives: Organizations, Teams, and People

This paper provides the author's personal views and perspectives on software process improvement. Starting with his first work on technology assessment in IBM over 20 years ago, Watts Humphrey describes the process improvement work he has been directly involved in. This includes the development of the early process assessment methods, the original design of the CMM, and the introduction of the Personal Software Process (PSP)^SM and Team Software Process (TSP){^SM}. In addition to describing the original motivation for this work, the author also reviews many of the problems he and his associates encountered and why they solved them the way they did. He also comments on the outstanding issues and likely directions for future work. Finally, this work has built on the experiences and contributions of many people. Mr. Humphrey only describes work that he was personally involved in and he names many of the key contributors. However, so many people have been involved in this work that a full list of the important participants would be impractical.     

基于复小波噪声方差显著修正的SAR图像去噪

提出了一种基于复小波域统计建模与噪声方差估计显著性修正相结合的合成孔径雷达(Synthetic Aperture Radar,SAR)图像斑点噪声滤波方法。该方法首先通过对数变换将乘性噪声模型转化为加性噪声模型,然后对变换后的图像进行双树复小波变换(Dualtree Complex Wavelet Transform,DCWT),并对复数小波系数的统计分布进行建模。在此先验分布的基础上,通过运用贝叶斯估计方法从含噪系数中恢复原始系数,达到滤除噪声的目的。实验结果表明该方法在去除噪声的同时保留了图像的细节信息,取得了很好的降噪效果。     

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。