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Date 2018-10-16
File Size 509.14 KB
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摘要:

针对某些嵌入式系统处理数据量大和速度高的特点,提出一种应用于嵌入式系统VxW orks中的内存文件系统.通过在内存中建立文件系统,将数据存放于内存中,既可以提高存取速度又可以节省外存空间,在某些特殊环境及设备中,可以减少对磁盘的操作,从而达到保护磁盘的目的.

关键词:

嵌入式系统; 内存文件系统; VxWorks;

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Date 2018-10-16
File Size 323.39 KB
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Based on the capability of dealing with large amount of data and high access speed of some embedded system, a RAM file system is proposed which is used in embedded system VxWorks. Allocating data in RAM can both accelerate the access speed and save space of eternal memory, providing protection for disk by reducing the direct operations on disk.

摘要:

针对目前列车网络控制系统的需要,设计了列车网络控制系统中MVB与RS485通信互连的网关。重点介绍了基于VXWORKS操作系统、COLDFIRE处理器平台实现RS485-MVB网关的软、硬件设计方案与技术。该网关系统充分利用了COLDFIRE处理器的片上资源及其优势,能很好地满足RS485-MVB网关系统的要求,具有较高的可靠性和较强的实用性。

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Date 2018-10-12
File Size 1.33 MB
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According to the current needs of train network control system, this paper designs gateway communicated between MVB and RS485. The paper puts emphasis on the scheme and technology of software and hardware of RS485-MVB gateway, which is based on VXWORKS operating system and COLDFIRE processor platform. The gateway system makes full use of the resources and advantages of the COLDFIRE processor-chip to meet the needs of the RS485-MVB gateway system and has the advantages of high reliability and applicability.

摘要:

VxWorks PCI总线的配置是系统应用的重点和难点。本文从应用角度解析PCI的配置原理和方法,列举常用的PCI库编程接口,结合应用示例与大家交流学习。

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Date 2018-10-12
File Size 555.55 KB
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摘要:

VxBus设备驱动架构是VxWorks操作系统中引入的最新概念,风河公司在VxWorks 6.2中加入这个架构以来,不断完善,到目前的VxWorks 6.9,设备驱动程序的开发基本上都采用VxBus架构。VxBus驱动程序架构是VxWorks操作系统未来驱动程序发展的方向,也是设计VxWorks操作系统中设备驱动的必经之路。本文分析VxBus设备驱动架构的优点,VxBus组成结构以及基于VxBus架构的设备驱动开发流程。

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Date 2018-10-12
File Size 568.1 KB
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