摘要：隨著科學技術的發展，嵌入式系統開發已經進入32位時代。國內外嵌入式產品地進一步開發和推廣，嵌入式技術越來越和人們地生活密切相關。本文主要介紹了以SAMSUNG ARM9（S3C2440）和嵌入式Linux為平臺的，基于GTM900模塊的GPRS無線通訊系統的硬件和軟件方面的設計。主要內容包括：GPRS通訊電路板的PCB設計；ARM9 中Boot loader 編程與FLASH燒寫；GPRS和ARM9的外圍與內部硬件電路的設計；串口通訊的原理與編程；AT指令的收發等等。該系統實現了以下功能：語音通訊；短信服務；電話薄的記錄與修改；來電查詢；來電顯示等等。

關鍵詞：ARM;S3C2440;嵌入式Linux系統;GTM900;AT指令集;GPRS

Abstract: With the development of technology, the Embedded System has come to the era of 32-bits. With the deeper and wider development of world wide embedded products, the embedded tech has become more and more related with people’s daily life. This article mainly introduces the hardware-software co-design of GPRS wireless Communication system based on the GPRS module with SAMSUNG ARM9 (S3C2440) microprocessor and embedded Linux system. The following are the main content: the design of M22 module’s PCB, the programming and FLASH download of Bootloader on ARM9 microprocessor, the both internal and peripheral hardware circuit design of GPRS module and ARM9 microprocessor, the principle and programming of serials port, and the AT command’s sending and receiving. The system’s main functions are as the following, the voice communication, the short message service, the recording and changing of phonebook, the checking of incoming call, the showing of incoming call and so on.

Key words: ARM; S3C2440; Embeded linux system;GTM900; AT Command; GPRS