The hardware design is expounded in chapter 3 , which include four parts . then we focus on how to merge them together in chapter 4 , that is , porting linux to mc9328mx1 , this includes several parts , the first part is flashloader which can be used to download programs ; and then , give out develop model of start - up guide code ( bootloader ) which runs before linux kernel and linux kernel ' s start - up analysis , also porting them to arm9 mx1 ; thirdly , we realizes the porting of lcd framebuffer driver based on deeply grasped linux device driver model ; fourthly , the rootfs ( file system ) ? ? cramfs is designed . then we give an example that based on the embedded linux in chapter 5 , what we call automobile navigation , and discuss how to develop with our arm linux to meet the need of application , too 第一章回顾gps导航系统的发展状况,指出课题研究背景及主要工作;第二章阐述嵌入式系统的概念、组成、开发流程及调试方法,构建车载导航系统开发平台;第三章介绍导航系统的硬件设计,包括主控模块、组合导航模块、防盗通讯模块和人机交互模块四大部分;第四章详细描述移植linux到mx1开发板的过程,包括:交叉编译环境的建立、下载程序( flashloader )的实现、启动引导加载代码bootloader设计与移植、 linux内核的启动分析及移植到硬件平台的整个过程、 linux驱动模型的深入的分析及lcd帧缓冲显示设备驱动的移植、根文件系统的构建等;第五章以嵌入式linux操作系统在车载导航中的应用为实例,介绍嵌入式系统软件的设计与实现,通过论述gps车载导航系统中定位模块的开发过程,探讨了基于arm & linux平台的应用开发。
First introduced is the hardware system that is based on the ucsimm board , followed by an illustration to the uclinux operating system and some device drivers . then the paper describes the gui subsystem , including a performance breakthrough made in its porting . afterwards the design of the data storage subsystem is shown , highlighting the techniques used to ensure correctness of stored data 首先介绍的是以ucsimm开发板为原型的硬件系统和配合这套硬件的uclinux操作系统，以及一部分硬件的驱动程序；然后论文对该系统的图形用户界面作了简要地说明，并叙述了在其移植过程中的一次重大的性能改进；接下来描述了数据存储系统的设计，着重介绍了该系统保证数据正确所采用的技术；最后，论文特别对系统涉及的基于固定电话网的通信协议作了比较详细的探讨。
To successfully integrate g18 wireless modems into their host platforms , motorola offers a standard gsm developer s kit . the kit is a specially developed evaluation circuit board with test points and jumper switches that allows the modem to be powered and interfaced to a host device ( pc ) via a serial port and cable 为了方便用户将g18模块成功地集成到自己的产品中，摩托罗拉提供一套标准的gsm开发工具，该开发板具有测试点及跳线开关，加电后可以通过串口线与宿主设备（如计算机）相连。
Finally , a demodualtion program except for sampling and judging is studied and successfully implemented on the dsp ( tms320c542 ) target board , with satisfactory result . the soft - modulation and soft - demodulation method put forward in this paper is relatively new , achieving a high practicality 最后，本文又在dsp ( tms320c542 )上研究并实现了除抽样判决外的bdpsk信号的解调软件，最终可在dsp开发板上的d a端口输出经低通滤波后的信号波形，它反映了基带信号的信息。
The main tasks are as follow : 1 . combining with current fire control system , the paper proposes two designing plans aiming at different application situation ; 2 . using samsung s3c44b0x arm board as the hardware platform , after research and analysis the architecture of the processor and i / o property , the way of porting c / os operation system to arm board is proposed 其主要内容为: 1 .结合与分析了当前消防报警监控系统现状,并针对不同的应用环境提出了消防监控信息交换系统的设计思路和总体方案; 2 .采用以arm处理器为核心的44box开发板为硬件平台,研究和分析处理器体系结构和外围设备的接口特性。
Based on s698 technology , obt - devsys - s698 is one of the serial s698 - mil application development systems including 32 - bit embedded processor with 32 64 - bit fpu 160mhz processing speed sram memory controller flash memory controller uart ps 2 led interrupter controller , etc . the bus interfaces is composed of i2c spi magnetic card interface and ic card interface . obt - devsys - s698 carries on the advantages of s698 serial module such as compact structure and reasonable composition Obt - devsys - s698是s698系列嵌入式处理器开发板中的一员，其上包括：具有32 64 - bit浮点运算单元的32 - bit嵌入式处理器，主频160mhz ， sram存储器， flash存储器具有三路uart接口，一路ps 2接口， led发光二极管控制电路，中断操作按钮其外扩总线包括i2c总线接口spi总线接口磁卡接口智能卡接口等。
