Applied Research On Bluetooth And Network Based On Embedded Linux

With the development of computer technology, communication technology and the in-depth application of the Internet, more and more embedded systems are running around us, which are becoming the center of interest in the IT industry. Embedded system is an application-oriented special computer system, which is scalable on both software and hardware. It can satisfy the strict requirement of functionality, reliability, cost, volume, and power consumption of particular applications. Bluetooth technology is a world wide open standard of wireless communication, which supports low cost, low power, short distance wireless connection, and be used for PAN mainly.The embedded accessing system of bluetooth and network is taken as the concrete research object. An embedded system of bluetooth accessing platform is realized by the co-design method of software and hardware, with the ARM series embedded processor as the core of hardware platform and the embedded Linux operating system as the software platform. Firstly, the bluetooth and network relational protocols and the basic concepts of the embedded system are introduced. And the socket is introduced later, with which the system can communicate. Then the thesis introduces the software platform of the system and the edit environment of crossed translated. Then the thesis introduces the hardware platform of the system and ARM processor that plays a key role in embedded micro-processor family right now. The powerful functions and working principles of S3C2410X based on ARM9 processor are illuminated detailedly. After analyzing the functional requirement of this system, a total solution of the system is proposed. Then the design of power circuit, network interface circuit, UART circuite and bluetooth circuit are discussed in detail. The project realizes the function of connecting the network by bluetooth, accomplishs the design of the system.