linux在智能家居系统中的裁剪及应用

linux in Intelligent System Cutting＆Application

在本设计中，从既实现相应的功能又节省系统资源的角度出发，采用了功能强大的ARM芯片结合带有Linux操作系统内核软件包的方案．通过和RTL8019AS以太网控制器连接，实现以太网的接入。在软件方案设计上，嵌入式系统中没有实现全部的TCP／IP协议，而是实现经过裁减的TCP／IP协议栈。通过有针对性的模块化裁剪，在ARM芯片上嵌入精简的TCP／IP协议栈，实现嵌入式Internet接入。精简后的协议主要包括TCP／IP协议组中的四个基本的协议：ARP协议、Ip协议、ICMP协议、TCP协议。链路层协议，作为设备驱动在链路层实现，由主控芯片来驱动以太网卡RTL8019AS。应用层协议，实现了HTTP协议。设计提供远程浏览的Web页面，需要通过登陆页面，进行身份验证，才能进入控制页面，实现家用电器的远程控制，增加了系统的安全性。

In this design,from both function of the realization and the corresponding saving system resources point of view, using a powerful combination of the ARM chip package with a Linux operating system kernel program,adoption and RTL8019AS Ethernet controller connected to the achievement of Ethernet access. Program in the software design,embedded systems did not achieve all of the TCP / IP protocol,to achieve through the reduction of the TCP / IP protocol stack.Through targeted modular cutting,chip ARM embedded in the streamlining of the TCP / IP protocol stack,the realization of embedded Internet access.Agreement to streamline the main TCP / IP protocol of the four basic agreement：ARP protocol,IP protocol,ICMP protocol,TCP protocol.Link layer protocol,as a device driver in link layer to achieve,by the master chip to drive the Ethernet card RTL8019AS.Application layer protocol,the realization of the HTTP protocol. The Web browser to provide remote pages,landing pages need to carry out authentication,page access controls in order to achieve the remote control home appliances,an increase of system security.