电子设备的调试技术及故障排查方法

文章根据作者多年电子设备的调试工作经历,从调试准备工作、调试过程到故障排查三个方面总结了电子设备调试的基本思路和调试技术以及调试过程中出现故障的排查方法和技巧,用以指导调试人员开展工作,提升调试人员技术水平。     

TRACE32PowerTools调试工具

劳特巴赫公司推出了一款新工具,可以对ATMELAVR32微处理器系列平台提供调试支持。 劳特巴赫的TRACE32为AVR32系列平台的调试提供了两种调试方案。PowerDebug系列通过JTAG接口为整个调试过程提供调试服务,包括代码下载、flash编程和源代码调试等基本调试功能。     

电子电路的调试技巧

电子设备在使用中,电路的调试占有重要地位。电子电路安装完成后,必须通过调试,使电路能够满足规定的各项技术指标要求。本文就常用电子电路调试原则、调试过程中的技巧、调试步骤及调试注意事项做了较为详尽的叙述。     

电子电路的调试技巧

电子设备在使用中,电路的调试占有重要地位。电子电路安装完成后,必须通过调试,使电路能够满足规定的各项技术指标要求。本文就常用电子电路调试原则、调试过程中的技巧、调试步骤及调试注意事项做了较为详尽的叙述。     

一种基于JTAG的嵌入式DSP可调试系统的设计

目前,嵌入式调试主要采用硬件调试器与调试程序相结合的调试方法。但硬件调试器的价格比较高,增加了系统开发成本。为了降低调试成本,提高调试效率,提出了一种基于JTAG接口的嵌入式DSP可调试系统,实现了硬件调试功能,具有较好的参考价值。     

基于RISC-V调试协议的片上调试系统设计与实现

为满足RISC-V架构生态中对RISC-V平台软件调试的需求,设计并实现了一种基于RISC-V调试协议的片上调试系统.该系统通过调试传输模块实现并隐藏调试模块内部寄存器访问逻辑,将其简化为JTAG串行信号实现与宿主机的交互,并通过调试模块实现了调试所必需的处理器全面监控与存储访问功能.在基本调试功能的基础上,进一步实现了总线直接访问、程序缓存和基于触发模块的触发功能,并在兼容RISC-V调试协议的情况下实现了事件序列触发功能.该片上调试系统依托于自研RISC-V处理器硬件平台,通过GDB与OpenOCD构成的宿主机软件环境进行功能测试.经过与其他RISC-V架构处理器对比和FPGA测试表明,该片上调试系统功能丰富,能够满足目前RISC-V平台调试的功能需求.     

Windows下源程序调试环境SLD

调试软件(Debugger)按照符号信息量可分为以下几种:反汇编调试,符号化汇编调试,汇编源程序调试,高级语言源程序调试,集成在线调试等。x86系列纯软件调试从诞生之日起就是源程序调试环境,如大家熟悉的Microsoft的CodeView,Borland公司的TurboDebugger等等。虽然这些产品起初是在DOS环境中使用的,但对于嵌入式系统开发调试仍是高起点。所以时至今日,不少嵌入式系统调试软件仍只支持汇编语言的调试,而不能真正支持高级语言源程序级的调试,更不用说是在Windows环境下的源程序调试。这客观上是由于各     

基于NoC的多核SoC片上调试构架

为解决基于NoC的多核SoC调试问题,提出一个片上硬件调试构架.详细分析了该构架的重要组成部分,调试代理及调试探测器.通过仿真验证了片上调试构架的功能,并针对逻辑综合的结果讨论了实现该调试构架的面积开销.     

基于OCP通信事务的SOC调试控制器

基于OCP通信事务进行SOC调试,提高了调试的抽象级别,对于以通信为核心的多核SOC,可以大大提高调试效率.为实现事务级调试,提出基于OCP通信事务的可配置调试控制器.通过分析OCP通信事务,该控制器根据预先配置的触发条件产生本地和远端调试控制信息,从而控制调试过程.通过对实验设计的仿真和综合,验证了调试控制器的功能,并分析了设计的面积开销.     

微机变压器保护测控装置的安装调试与故障排查

电气设备的安装调试是电气类相关专业学生亟待培养的技能。本文以WBZ-65A微机变压器保护测控装置为例,根据实践经验,设计出了这类电气设备安装调试的流程为熟悉安装调试对象、安装前的准备、主要组件功能调试与故障排查、整机调试四大步骤。只有在实践中不断积累调试及排除故障的经验,才能逐步提高安装调试技能和效率。     

BDM模式下MPC555外部FLASH编程的设计与实现

BDM是目前单片机普遍采用的调试方式之一,以Freescale 32位处理器MPC555处理器和AMD的FLASH存储模块AM29LV160DB为基础讨论了BDM模式下对MPC555外部扩展的FLASH进行编程的设计,给出了MPC555外部存储器扩展原理及硬件设计、BDM接口板硬件设计、软件编程方法及测试例程。重点讨论了BDM模式下对AM29LV160DB进行擦除和写入的编程原理。     

针对Motorola微处理器的BDM调试系统的设计

BDM调试模式全称背景调试模式(Background Debugger Mode)。在Motorola的PowerPC5xx／8xx，ColdFire系列微处理器中，都集成有这种调试模块。本文将详细的介绍BDM调试方式的特点，并在基础上针对ColdFire系列处理器MCF5272讨论了BDM调试系统的软硬件设计方法。     

Advances in binary decision based programmable controllers

Binary decision automata are finite state machines that evaluate switching functions by means of decision rather than Boolean logic. The capability of binary decision machines (BDMs) to evaluate sequential functions is addressed by the authors. The BDM is shown to be less powerful than the deterministic finite automation (DFA) model from automata theory. However, an extended BDM with input control is shown to be equivalent to the DFA and thus can be used to implement finitely computable sequential functions. The use of a BDM finite automaton instead of a more general model is motivated on the basis of expected case time and space complexity analysis. A hardware design following from this analysis is described, and programming methods are discussed     

On a generalization of the extended boundary condition method

The elementary problem of scattering of an E-polarized plane wave by a circular perfectly conducting cylinder is used for verifying the efficiency of the boundary deformation method (BDM) that has recently been proposed as a generalization of the extended boundary condition method (EBCM). It is shown that the BDM can ensure the highly accurate fulfillment of the null-field condition on an interior contour spaced from the boundary in accordance with this method. However, when the accuracy of the fulfillment of the aforementioned condition on the contour near the boundary or on the boundary itself corresponds to the solution found for the current, this accuracy is substantially worse than the accuracy achieved in the case when the standard EBCM with a contour located near the boundary is applied. In addition, it is shown that, when the singularities of the wave field are enclosed by the contour chosen according to the BDM, a correct solution to the problem is not guaranteed.     

IP/MPLS over WDM网中的动态选路和波长分配算法

该文研究了IP/MPLS over WDM网中,利用综合路由法为到达的业务流建立标签交换路径(LSP)时,如何选择是在WDM层为它新建一条光路,还是利用现有的逻辑IP链路来满足其要求,提出一种带宽碎片消除的策略,该策略在决定是否利用逻辑IP链路来建立LSP时,总是尽量减少造成带宽碎片,从而可以有效提高全网的资源利用率,仿真结果表明带宽碎片消除策略可以进一步改善综合路由算法的性能。     

用于多普勒流速剖面仪测波浪的方向谱反演算法研究

为了取得声学多普勒流速剖面仪(ADCP)测量波浪的合理可靠的方向谱反演结果,该文对实用的几种基于仪器阵列的海浪方向谱反演算法进行理论上的性能分析并使用其处理ADCP波面高度数据(包括计算机仿真和实测数据)进行比较,结果表明贝叶斯法(BDM)的方向分辨率最高,最大似然法(MLM)的稳定性最强,扩展本征矢法(EEV)在波浪波长较大时能取得最明确尖锐的谱峰。因此MLM适用于波浪数据的实时处理,而对精度要求较高时可使用BDM。     

Constrained band selection for hyperspectral imagery

Constrained energy minimization (CEM) has shown effective in hyperspectral target detection. It linearly constrains a desired target signature while minimizing interfering effects caused by other unknown signatures. This paper explores this idea for band selection and develops a new approach to band selection, referred to as constrained band selection (CBS) for hyperspectral imagery. It interprets a band image as a desired target signature vector while considering other band images as unknown signature vectors. As a result, the proposed CBS using the concept of the CEM to linearly constrain a band image, while also minimizing band correlation or dependence provided by other band images, is referred to as CEM-CBS. Four different criteria referred to as Band Correlation Minimization (BCM), Band Correlation Constraint (BCC), Band Dependence Constraint (BDC), and Band Dependence Minimization (BDM) are derived for CEM-CBS.. Since dimensionality resulting from conversion of a band image to a vector may be huge, the CEM-CBS is further reinterpreted as linearly constrained minimum variance (LCMV)-based CBS by constraining a band image as a matrix where the same four criteria, BCM, BCC, BDC, and BDM, can be also used for LCMV-CBS. In order to determine the number of bands required to select p, a recently developed concept, called virtual dimensionality, is used to estimate the p. Once the p is determined, a set of p desired bands can be selected by the CEM/LCMV-CBS. Finally, experiments are conducted to substantiate the proposed CEM/LCMV-CBS four criteria, BCM, BCC, BDC, and BDM, in comparison with variance-based band selection, information divergence-based band selection, and uniform band selection.     

用CodeWarrior开发系统调试MCF5206e

文章简要介绍了Motorola ColdFire MCF5206e处理器．以及用CodeWarrior开发系统通过背景调试模式调试的方法．并详细分析了调试版本和自启动版本程序中要设置的寄存器。     

机动雷达部队抢修设备携行量模型分析

根据雷达战场损伤模式特点,分析如何合理选择战场损伤模式的各种抢修方法,针对战时机动雷达部队抢修备件携带数量确定问题,建立以最短平均抢修时间为目标函数、以抢修备件携带能力有限为约束条件的备件优化模型,运用线性规划理论对模型进行求解,并提出快速抢修战损故障的合理建议。