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本研究的目的是实现一个具有3G无线网络接入功能的嵌入式系统。系统的硬件平台是基于ARM系列的S3C2410微处理器。文章简要介绍了该系统的体系结构,给出USB主机接口硬件电路。研究基于USB接口的3G无线网卡的无线网络接入功能实现,包括研究LinuxUSB设备驱动程序、实现USBSerial设备的驱动、定制Cramfs文件系统。最后移植和配置PPP拨号程序,实现嵌入式系统通过3G无线网卡接入无线网络的功能。
The purpose of this study is to implement an embedded system with 3G wireless network access. System hardware platform is based on ARM series S3C2410 microprocessor. The article briefly introduces the architecture of the system and gives the USB host interface hardware circuit. Research on wireless network access function of 3G wireless network card based on USB interface, including researching LinuxUSB device driver, driving USBSerial device and customizing Cramfs file system. Finally, transplant and configure PPP dial-up program to achieve embedded systems through the 3G wireless network card access to wireless networks.