Study Of Embedded System Based On ARM And Design Of USB Device Driver

Embedded system is a fast developing field. The research contents of embedded system deal with various aspect of computer subject. Recently, net system, wireless net, 3G application and consumer electronic are applied by embedded system. Primary techniques include embedded operating system, system chip design, application software development and various service investigate. In this paper, the system structure and development of embedded system have been researched. The operation model, the setting and distributing of register in ARM processor have been studied. embedded system microprocessor Intel PXA255 has been analyzed and discussed.The embedded operating system uC/OS-â…¡ Windows CE,Linux are studied. The emphases of the study put on embedded Linux operation system which is applied by this subject. The research on microprocessor PXA255 includes realization of EMS memory, process scheduling, interrupt disposal and system call mechanism. The Bus structure and communication model of USB are discussed. On the basis of research on Intel Xscale PXA255 chip, transplanting ARM Linux in xhyper255B block has been down , which include Linux kernel transplanting, amending file system sand programming induction program Bootloader. USB driver chip CY7C67300 is expanded onto xhyper255B evaluation board. USB driver program is realized in Linux.