The Design Of Heterogeneous Communication Gateway Based On The Embedded Platform

With the development of technology and people's increasing requirement, the embedded system is being used in more and more fields, especially in the fields of electronics communication, etc. From the aspect of the application and practice of practice of embedded system, a kind of heterogeneous communication gateway is designed and implemented based on the 32-bit ARM microprocessor S3C44B0X and the embedded operating systemμCLinux, which not only have the functions of data processing and controlling, but provides some basic hardware interfaces, including Multi-UART interfaces and 1 CAN-BUS interface. The heterogeneous communication gateway makes it possible to communication between traditional serial terminals, solving the problem of reliability and transmission distance limitation of different devices.This thesis studies the key problems of technologies involved in the design, development and application of the heterogeneous communication gateway, and provides the proper method of solving the problems in the process. The thesis is mainly composed of five parts: firstly, the embedded system and its developing method is introduced, and then the whole design scheme is put forward; secondly, based on the analysis of the ARM kernel S3C44B0X is chosen for the CPU of the H-C gateway, the scheme of hardware which can meet the need of system parameter is brought forward, and the functions, structure and working flow is also analyzed, the system circuit comes up; thirdly, the process of PCB design and hardware debugging are introduced and key points in the debugging are analyzed; and then the software platform design is introduced, the bootloader program design, transplant of embedded operating systemμCLinux, device drivers and application multi-task programs included; finally, combined with the application after the H-C gateway hardware-software design, the project of the Commanding System of Cloud Seeding Operation is implemented, in which the structure, communication protocol and the implement are given out after the analyses of system requirement, hardware and the flow chart of software are given out as well. Summary is made at the end of this thesis and the further research direction is proposed.