【作者】 李彦生；

【导师】 李成忠；

【作者基本信息】 西南交通大学 ， 计算机应用技术， 2003， 硕士

【摘要】 2002年下半年，信息产业部正式发文，同意中国网通、中国联通开展长途公话商用试验，同意中国移动、中国联通开展移动公话业务。自此，宣告公话市场正式从中国电信一家垄断，彻底转变为电信、网通、联通、移动、铁通各大运营商群雄逐鹿的新战场。移动运行商想经营公话，因此无线公话应运而生，GSM无线公话便是其中一员。 现有的GSM无线公话多存在性能单一，不易升级，不易维护的问题，在此基础上，西安易安信科技股份有限公司提出基于32位嵌入式系统的GSM无线公话解决方案，该方案具有稳定性好，易于扩展等优点，并且实现远程代码下载，极大降低维护成本。这套方案还能够满足大多数嵌入式设备对显示、存储量、声音等方面的需求，因此可以很容易的转型为其他产品，例如将GSM无线收发模块换为有线MODEM，则可与有线网络连接，可用于远程数据采集等场合。 本论文首先说明GSM无线公话产生的背景及现状，第二章说明根据信息产业部和市场反馈制定的详细需求，第三章说明确定的系统总体设计方案，第四章简要说明构建该方案所用的SIC33嵌入式系统平台，第五章详细说明作者负责设计的硬件驱动部分，第六章给出实际产品的测试报告，最后对本论文进行总结。 该项目中，本人完成了以下几方面的工作： (1)负责所有消息的驱动，使上层应用程序能够接收到底层硬件设备产生的消息，并做相应处理； (2)负责所有硬件驱动程序的设计和调试。驱动程序包括LCD显示驱动、FLASH驱动、E~2PROM驱动、声音驱动、GSM模块状态监控驱动、键盘驱动、串口驱动、实时钟驱动、电源管理、摘挂机检测驱动，共10部分。 (3)负责解决遇到的所有与驱动相关的问题。 (4)负责制作烧写工具，烧写程序、字库、参数表。 由于硬件驱动是整个系统硬件、软件联系的桥梁，因此对嵌入式系统的硬件系统结构、软件结构、嵌入式系统操作系统均有深刻认识，极大的提高了实践工作能力。更多还原

【Abstract】 In the year of 2002, some documents were subscribed by Ministy of information industry, in which was informed that China Mobile and China Unicom are permitted to enter public phone market. From then on, the public phone market’s monopolization by China Telecom was broken, and the market will become a new field in which China Telecom, China Mobile , China Unicom, China Netcom compete. Under the condition that China Mobile and China Unicom want to deal in the public phone business, wireless public phone appears, included GSM wireless public phone.Most of current GSM public phones have their limitations, such as single function, upgrade with difficulty, Xi’an IceChina Co. Ltd brought forward a new solution based on 32-bit embedded system. The solution has it advantages on stability and expansibility, and implement remote code download, which greatly reduce maintenance cost. Also the solution satifies most embedded device’s requirment on display, sounds, store, and can be easily developed to be other kinds device, for example, if GSM modem is replaced with line modem, it can be lined on PSTN, which can apply on remote data colletion.This paper is first described backgroud and currence of GSM public phone, second is described technological requirement by Ministry of information industry, third is detaiedly described the solution based on 32-bit embedded system, subsequently is briefly described the embedded development platform--SIC33 on which the solution is based, then is detailedly described the hardward drivers, by which a test report is followed to prove the solution is viable, finally some conclusion is concluded.In the project, the work completed by the author is as followed:(1) answer for events’ transmition, which are transmitted to application programs, and correspondly dealt;(2) answer for all of the handware drivers, included LCD display driver, FLASH driver, E2PROM driver, sound driver, GSM status monitorer driver, keyboard driver, UART driver, real-time controller driver, hung-up monitorer driver;(3) answer for all problems related with hardware drivers;(4) answer for the tools for write data to FLASH, such as programs, fontlibraries.The hardware driver is the briage of hardware devices and application programs, which give the author chance to deeply understand the architeture of embedded hardware, the architeture of embedded software, embedded OS, and greatly improve the working ability.更多还原