Embedded Platform Technology Based On ARM And Its Application In The Machine-mounted

With the electronics, embedded software and control technology developed rapidly, and the requirement of informationization, intelligent, networked of the construction machinery in infrastructure construction trade constant improving,, the construction machinery monitor and control system based on embedded technology has become a hot subject in the domestic and international control field.Firstly, this paper summarizes the situations and trends of domestic and international engineering machinery, illustrates the demands and implements of intelligent and long-range monitoring and controlling in construction machinery ,and constructs a three-layer model of the engineering machinery long-range monitoring and control system: the front unit control systems, the machine-mounted monitoring system and the long-range control center ; proposes a kind of structure of embedded system based on HMS30C7202 and embedded Linux; Researching the characteristic of HMS30C7202,kernel construct and mechanism of the CPU's operation deeply, than combining the booting program, the paper issue some modification of Linux kernel before transplanting and the framework of the linux device driver. This text makes a particular presentation about some important circuits for instance the center process unit,the memory unit,the interface of the UART and HMI,CAN bus module,JTAG,reset circuit etc, which are main parts of the embedded system's hardware. To improve the booting program's validity, the text presents the process of transplanting the real-time kernelμC/OS-II to the hardware of the embedded system and the low-level hardware driver program of the operation system. Finally the text introduces the framework of the application program.The hardware and low-level software system designed in the paper, not only is the bedrock of the whole system, but also is the core of the system. Some productions , such as the designs based on ARM, the technology of designing the embedded hardware,the development of the booting program and the low-level driver program, have values of application and popularization.