Design Of ARM-based Wireless Data Transmission System

To fulfill the need of military informatization construction for wireless data transmission technology, the paper designed a wireless data transmission system prototype comprising 32-bit embedded system main-control module and RF sending and receive module. By means of embedded system development flow and method, the system emphasized on the design of general modular software/hardware platform, and therefore, solved the key problem of wireless data transmission system design. Transplanting uC/OS-II as a software platform, the paper has done a integrated design for basic software such as system-related drivers and communication protocols, which makes certain contribution to further expanding the system's function and going into engineering application.Firstly, considering the choice of system microprocessor, wireless data transmission mode and system interface mode, the paper built up the system software/hardware frame structure, taking full advantage of using 32-bit ARM processor and embedded operating system to build system main-control module.Then, it laid emphasis on the design of LPC2138 (ARM) microprocessor, nRF401 wireless RF chip's peripheral circuit, and analyzed the system hardware antijamming measures. On the basis of hardware circuit design, the paper designed a startup code for the main-control module, studied the uC/OS-II operating system structure, conducted the system transplantation, and in this way accomplished the whole software/hardware developing platform.Lastly, under the research of uC/OS-II operating system program design technology, the paper led to a discussion of developing method of basic software such as system-related drivers and communication protocols, completed the basic directory and module software design, validated the system function of wireless data transmission, and suggested a potential blueprint of future function expand and engineering application.