Research And Implementation Of Wifi Wireless Communication Terminal Based On Arm

With the "wireless city" concept put forward, WiFi wireless communication technology developed rapidly, WiFi has became the mainstream standard of wireless Internet access technology. Since many areas at home and abroad has provided WiFi coverage domain, you can access the Internet as long as portable electronic products has WiFi terminals. At present, ARM is widely used in portable electronic product development, so it is of great value to do deep research on WiFi wireless communication terminal under ARM.Based on Samsung's S3C2440 ARM processor and embedded Linux operating system, this paper has a research on the application of the Marvell 88w8686 WiFi wireless network controller, and implements a low-power wireless communication terminal which can access the Internet in the WiFi hotspot. On the software side, the system uses ADS-based integrated development platform Bootloader, the Qtopia desktop environment, and adopts embedded Linux system as the operating system, the Qt-based Konqueror as a browser.This paper describes the software implementation of wireless communication terminal from the bottom to the top, including porting Bootloader, porting Linux kernel, making root file system, porting device drivers such as WiFi wireless network card, LCD and touch screen, transplanting Qtopia and Konqueror. Finally, the implementation of the interactive interface and power management is introduced.The result of the test shows that the wireless communication terminal that we build can visit the Internet in WiFi coverage area. We Call also operate the terminal using mouse, keyboard and touch screen. In the power management features, the system can switch normally among the normal state, low-power state and sleep state, can sleep and wake up properly.