FPGA和ARM之间一种简易高效的图像数据传输系统实现

Implement of a Refined and Efficient Image Acquisition System between FPGA and ARM

为了满足硬件资源受限X射线相衬成像系统中图像数据实时采集的要求,在基于FPGA+ARM双核结构条件下,给出了一种FPGA与ARM之间精简的异步总线实现数据传输的方法,仅需要2根控制线就可以完成高效的数据传输。通过看门狗计时程序的测试表明:该方法能使传输时间缩短50%以上,特别适用于硬件资源紧张、接口信号有限的数据采集系统。

In order to meet the requirement of real-time data acquisition for hardware resources limited X-ray phase contrast imaging systems, this paper proposed a refined asynchronous bus data transmission method between FPGA and ARM, based on FP- GA ＋ ARM dual-core structure. In this method ,only two control lines were required for efficiently data transmission. The watchdog timer program testing shows that this method can reduce the transmission time by more than 50%. It is especially suitable for data acquisition system that hardware resources and interface signals are limited.