The Research And Design For ARM-Linux Web Data Collection System

This dissertation introduces hardware composition and the software development process of the ARM-Linux embedded data collection system. The S3C44B0X of ARM is used as CPU in the system 2M FLASH and 8M SDRAM is used as memorizer in the development board .RTL8019AS is used in the development board.LCD is used in the development board as the display equipment. And the wire connection and the function of the chip in the development board is introduced.The development environment of the data collection system is composed by thePC which the Red Hat Linux operating system is installed and the development board.The structure of the uClinux operating system and the grammer rules of the Makefile is introduced. The compiling process of the uClinux code which the user programme is added to is introduced.The multi-process mechanism is used in the user programme.The management of the multi-process, realization process and the commucation of the multi-process is introduced.For drivering the A/D module of the S3C44B0X,the driver programme is added to the uClinux.The structure of the linux operating system and the process which the driver programme is added to is introduced.For the client computer visiting the development board which the uClinux is running on ,the web server programme Boa and the gateway script CGI is added to the uClinux.In short ,a two-process user programme is achieved;the function of one process is collecting data,and the function of the other process is sending data to client.The client can visit the data collecting system by means of html.