基于VME总线的嵌入式Linux应用的研究

介绍了在高能物理实验的数据获取读出系统中应用嵌入式Linux的可行性分析与关键技术。首先介绍测试系统的硬件平台与软件框架。重点介绍在读出系统中实现嵌入式Linux应用的关键技术—寄存器读写、CBLT传输、中断处理、多线程技术、cache相关的处理等。系统开发基于VME总线,通过修改Linux内核与vme_universe驱动,解决了开发过程中的相关问题。最后给出系统测试运行结果,基于Linux的读出系统已经可以配合在线软件较为稳定地运行,系统性能达到预期效果,验证了在高能物理实验中采用基于Linux的读出系统的可行性。

Research on Application of VME Based Embedded Linux

It describes the feasibility and realization of using embedded Linux in DAQ readout system of high energy physics experiment.The first part,the hardware and software framework is introduced.And then emphasis is placed on the key technologies during the system realization.The development is based On the VME bus and vme_universe driver.Finally,the test result is presented:the readout system can work well in Embedded Linux OS.