Design And Development Of WiFi Universal Smart Control Terminal Based On ARM

As the development of wireless network technology, the WiFi wireless networkcommunications and control technology has made great progress.Today, in mostcountries in the world, WiFi technology has become the mainstream standard forwireless broadband access network. A considerable part of the city offer a WiFisignal in the domestic, such as many phone booth was transformed into a WiFi signalhotspots, we take portable electronic products terminal with a WiFi module, we canaccess the Internet surfing on the street. Now, as internet of things to develop in fullswing, people pursuit smart and good operational control capability of handhelddevices and the practical operation of related equipment interconnection mutual.Ifthat intelligent electronic devices is able to control the remote lies in hand, we cansave a lot of unnecessary trouble in the other end of the network can easily solve theproblem. Today smart handheld terminals are mostly based on the ARM architecture,Intelligent control makes sense to research WiFi wireless communication terminal inthe ARM.The main subject is based on Samsung S3C2440A core processor, through thestructures of the peripheral circuit design,to develop a universal wireless controlterminal hardware. The hardware platform of terminal which is designed in thesubject is called target board and embedded Linux operating system is ported to thetarget board. We need design a reliable wireless module that is connected to thetarget board, to achieve the target board via WiFi signal to form the LAN orconnected to the Internet through WiFi hotspots, and can control other intelligentdevices in the network, the mutual visits of intelligent terminals in the networkandcontrol.This subject in terms of software, embedded Linux system as the operatingsystem, use the Qtopia desktop environment，A detailed analysis of the wireless intelligent control system, the software part, including from the bottom to the toplevel, such as the Linux kernel, graphical configuration and transplantation, the rootfile system of the related production, the WiFi wireless network card, the LCD, touchscreen calibration procedure set the Qtopia transplantation of the desktopenvironment, the delay of the wireless control signal feedback。System experimental test results show that the WiFi signal coverage area of thewireless intelligent control terminal connected to the Internet and LAN consists oftwo networking, and can connect and control each other through networkingsimulation host。Target board can be used to touch-screen operation。In networkingsituations, the use of SSH protocol to remote intelligent control。...