基于ARM的上海光源数字化束流位置探测器数据获取系统中FPGA设备驱动的设计

Design of FPGA Driver for ARM-based Data Acquisition System in DBPM

针对上海第三代同步辐射光源中束流位置测量的数据传输问题,设计了基于ARM处理器AT91RM9200的数据获取系统的硬件电路结构,并对Linux下的驱动开发进行了分析。通过内存映射机制实现了FPGA的设备驱动,并通过用户应用程序完成对FPGA设备的操作。

For the data transmission problem in the beam position monitor for Shanghai Synchrotron Radia- tion Facility （SSRF）, the design of hardware circuit structure of the data acquisition system based on ARM-based processor AT91RM9200 is presented in the paper and the driven development on the Linux are analyzed. The implementation of the FPGA device driver is through memory mapping mechanism, and operations on the FPGA device are achieved through user application.