Introduction - If you have any usage issues, please Google them yourself
In this paper, ARM7-based embedded systems developed on the details of USB interface. Projects using ARM7 (MCU processor) and PDIUSBD12 (USB chip) completed the development of U disk. Mainly related to the U disk USB interface development process involved in the technical content focuses on project debugging methods and steps with its own process in the development of this project some of the ideas and experience