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利用嵌入式系统软硬件易裁剪、μCLinux开放源代码和易移植的特点,设计一个通过CDMA网络发送电子邮件的无线数传系统。硬件方面介绍了基于三星S3C44B0X芯片的ARM7开发板实验平台的软硬件设计与测试;软件方面论述了关于ARM-μCLinux嵌入式系统交叉编译环境的建立、用MiniGUI实现图型界面部分以及应用程序的编写方法。利用一个无线CDMA模块实现ARM与互联网的连接,其中应用Linux网络编程实现CDMA Modem的数据传输,应用PPP协议实现拨号功能,应用SMTP协议实现数据往Email传输的功能。
Using embedded system software and hardware easy to cut, μCLinux open source and portable features, design a wireless data transmission system through the CDMA network to send e-mail. Hardware and software design and testing based on ARM7 development board experimental platform of Samsung S3C44B0X chip are introduced in the aspect of hardware. The establishment of cross-compiling environment of ARM-μCLinux embedded system is discussed in the aspect of software, and the writing of graphical interface part and application program by MiniGUI method. The use of a wireless CDMA module to achieve the connection between the ARM and the Internet, including the application of Linux network programming CDMA Modem data transmission, the application of PPP protocol to achieve dial-up function, the application of SMTP protocol to achieve the data to Email transmission function.