| 基于NiosⅡ软核的工业以太网精确时钟同步的实现 |
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| 引用本文： | 郑鸣,付蔚.基于NiosⅡ软核的工业以太网精确时钟同步的实现[J].计算机应用与软件,2009,26(3). |
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| 作者姓名： | 郑鸣 付蔚 |
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| 作者单位： | 重庆邮电大学网络控制技术与智能仪器仪表重点实验室,重庆,400065 |
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| 基金项目： | 国家高技术研究发展计划(863计划) |
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| 摘 要： | 介绍了基于NiosⅡ嵌入式软核处理器的工业以太网设备间精确时钟同步的设计与实现.利用Altera公司的Nios Ⅱ处理器,添加片内外设和存储器以及与片外存储器和外设相连的接口,通过SOPC(可编程片上系统)技术嵌入到FPGA芯片中形成Nios Ⅱ处理器系统硬件平台;软件部分移植uC/OS-Ⅱ作为操作系统,Lwip(轻量级TCP/IP协议)处理网络协议,在应用层上实现状态转换、同步报文处理和精确时钟算法.测试结果表明时钟同步精度高,并且最终在一个工业以太网实验平台上进行了长期的实际运行,系统稳定性良好.
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| 关 键 词： | NiosⅡ 工业以太网 精确时钟同步 |
IMPLEMENTING THE SYNCHRONIZATION OF INDUSTRIAL ETHERNET PRECISE CLOCK BASED ON NIOS II SOFT-CORE |
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| ZHENG Ming,FU Wei.IMPLEMENTING THE SYNCHRONIZATION OF INDUSTRIAL ETHERNET PRECISE CLOCK BASED ON NIOS II SOFT-CORE[J].Computer Applications and Software,2009,26(3). |
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| Authors: | ZHENG Ming FU Wei |
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| Affiliation: | Key Lab of Network Control Tech.& Ins.;Chongqing Universitly of P&T;Chongqing 400065;China |
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| Abstract: | This paper introduces the design and implementation of precise clock synchronization among the industrial Ethernet devices based on NiosII embedded soft-core microprocessor.The NiosII microprocessor of Altera Corporation was combined with internal devices and memorizers and interfaces of external memorizers and devices,and was embedded into FPGA chip by SOPC(system on programmable chip) technology,which constituted the hardware carrier of NiosII microprocessor system.In software part,uC/OS-II was transplant... |
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| Keywords: | SOPC |
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