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基于ARM的RISC处理器广泛应用于各种数字系统中.本文以AT91RM9200为系统平台,设计了一种基于双口RAM的实时数据接口,针对双口RAM的“乒乓”传输方式在Linux2.6下设计并开发了其驱动程序,最终实现了数据源与处理器间不间断、快速的数据传输。
ARM-based RISC processor is widely used in a variety of digital systems.In this paper, AT91RM9200 as a system platform, a dual-port RAM based on the design of a real-time data interface for dual-port RAM “ping-pong” transmission mode under Linux2.6 Designed and developed its driver, and finally realized the uninterrupted and fast data transmission between the data source and the processor.