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Android-based Wi-Fi module design and implementation

Author: PeiChao
Tutor: TuGang
School: Huazhong University of Science and Technology
Course: Applied Computer Technology
Keywords: Mobile Internet Devices Wireless Fidelity Device driver
CLC: TP311.52
Type: Master's thesis
Year: 2011
Downloads: 254
Quote: 1
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Abstract


In recent years , with the rapid development of the Internet , the network has entered the household, production and life become an indispensable source of information. It has been satisfied sitting at a computer desk browsing the web , but to the Internet anytime, anywhere access to information . In this context , mobile Internet devices has become a major Internet company's new main battlefield of competition . Wuhan Routon Electronic Co., Ltd. introduced the P760 -car navigation terminal equipment to Samsung's S3C6410 hardware platform , using Google 's Android operating system. In order to meet growing customer demand for the network , the product implements Wi-Fi and other mobile Internet access. According to the hierarchy of the Android system , Wi-Fi implementation work is divided into device driver layer , an intermediate layer and application layer three parts. Device driver layer , Android system based on the Linux kernel , device drivers using Linux . That part of the Wi-Fi driver can be further subdivided into two layers , namely, I / O communication layer and Wi-Fi functional layer . Wi-Fi module using the SPI bus communication with the CPU , so the I / O communication layer corresponds to the SPI bus driver . Wi-Fi capability layer driver from the hardware manufacturer . Connect the drive to play the middle layer and application layer of roles, including Android system hardware abstraction layer (HAL) interfaces , Wi-Fi connection procedures, etc. , which are dynamic link libraries and daemons in the form of support for the system , in addition to Add a startup script to start Wi-Fi service . The application layer includes the majority of system services and the entire user interface , Wi-Fi module is responsible for the state transition control, and interaction with the user . This layer power management , IP settings and other functions will be improved to further enhance the user experience.

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