如何给嵌入式系统添加USB

嵌入式系统Designing USBInto Embedded Systems Issues and AnswersOverviewThe interoperability,performance,and ease-of-use of USB has led to its overwhelmingacceptance in the marketplace.It is the interface of choice for all but the highest performance andlowest cost applications.This near-ubiquity has led many companies to investigate adding USBto existing embedded designs,thus providing compatibility with a wide variety of devices with aminimum of development effort.However,the ease-of-use of USB from a consumer standpoint belies the serious complexity ofthe software and hardware design.Making poor decisio