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VxWorks下的文件系统介绍

Date 2019-07-16
File Size 1.26 MB
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VxWorks下的文件系统介绍

VxWorks 网络协议源代码

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VxWorks Networking Protocol Source Code

Date 2019-06-09
File Size 58.9 KB
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中文摘要:

分析了VxWorks系统中VxBus型驱动的组成和一般设计过程,对串口、时钟等VxWorks系统自带VxBus型驱动的设备进行了配置,对龙芯1E芯片的中断控制器驱动进行了分层设计,在VxWorks原有的MIPS中断控制器驱动基础上,增加了专门针对龙芯1E和龙芯1F的中断控制器驱动,并且3个中断控制器驱动通过设备配置文件相互关联,实现了中断服务程序的嵌套调用。对龙芯1F接口芯片上的智能1553B功能单独设计了一个VxBus型驱动,并通过设计驱动方法的方式向应用层提供了驱动的使用接口,屏蔽了底层硬件细节,简化了应用层的设计。实验结果表明在龙芯1E1F航天应用平台上进行VxBus型驱动设计使得软件结构更加清晰,系统移植的难度大大降低,并且简化了应用层软件设计,对航天领域基于龙芯和Vxworks系统的开发设计具有较高的参考价值。

Synopsis

Analyzed the structure of VxBus driver and the normal design procedure of VxBus driver on VxWorks system. Configured the VxBus diver which is already supported by VxWorks, such as the serial and the clock driver. The design of interrupt is divided into three layers, the MIPS interrupt, the Loongson 1E interrupt and the Loongson 1F interrupt. The three interrupt layers are nested and connected by board support package(BSP) hardware configuration. Designed a smart 1553B VxBus dirver to use the 1553B function supported by Loongson 1F. Application layer can call the driver methods to perform 1553B function easily and ignore the hardware details. The result shows that VxBus design on Loongson aerospace platform simplify the software design of application layer and makes the software structure much more clear and the system planting easier. The VxBus driver design method has high value for aerospace engineering based on Loongson and VxWorks system.

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基于龙芯1E1F航天应用平台与VxWorks系统的VxBus型驱动设计

Date 2019-05-24
File Size 1.71 MB
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摘要:

非易失存储器(NVMe)协议是寄存器级的传输协议,用于实现主控软件与非易失存储设备间的数据传输,其在设计时针对固态硬盘(SSD)特性优化了命令发送和完成路径,通过PCIe链路传输数据,利用PCIe高带宽实现高速数据传输。阐述了VxWorks 6.8实时操作系统下NVMe驱动设计流程,实现了NVMe协议的基本功能,并测试验证其功能和效率;测试结果表明,该系统下NVMe驱动发挥了较高的性能,单向数据传输速率约为700 MB/s(PCIe1.0×4),相较于SATA接口SSD有极大的性能提升,具有广泛的应用价值。

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VxWorks6.8操作系统下NVMe驱动设计

Date 2019-05-28
File Size 379.27 KB
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Synopsis

NVM Express(NVMe) is a register level interface that allows host software to communicate with a non-volatile memory subsystem such as solid state drives(SSD).This interface provides optimized command submission and completion paths for SSD, typically attached to PCI Express interface. Design process of NVMe driver software based on VxWorks 6.8 operating system is described, and NVMe fundamental functions are implemented. Test results show that this NVMe driver has relatively high performance, and the bandwidth is about 700 MB/s(PCIe1.0×4),which creates a significant improvement performance compared with SATA.

VxWorks操作系统在OMAP平台上的移植

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VxWorks操作系统在OMAP平台上的移植

Date 2019-05-20
File Size 436.59 KB
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