| USB数据采集系统中DMA数据传输的实现 |
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| 引用本文： | 罗伟林,王立欣,毛远.USB数据采集系统中DMA数据传输的实现[J].电子测量技术,2008,31(6). |
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| 作者姓名： | 罗伟林 王立欣 毛远 |
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| 作者单位： | 哈尔滨工业大学,哈尔滨,150001 |
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| 摘 要： | USB2.0高速传输促进了USB接口虚拟仪器的发展。本文设计开发了一套基于USB2.0高速传输的数据采集系统。系统利用CPLD和LPC2888的DMA通道实现了DMA方式的数据传输。在设备驱动应用程序的实现方法上,配置NI-VISA生成驱动程序,在LabWindows CVI中进行应用编程。经测试,系统工作稳定可靠,采样结果正确,有效数据传输速度达128Mb/s。
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| 关 键 词： | 数据采集 USB DMA VISA |
Implementation of DMA data transfers in a data acquisition system based on USB |
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| Luo Weilin,Wang Lixin,Mao Yuan.Implementation of DMA data transfers in a data acquisition system based on USB[J].Electronic Measurement Technology,2008,31(6). |
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| Authors: | Luo Weilin Wang Lixin Mao Yuan |
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| Abstract: | High-speed USB accelerates the development of the USB-based virtual instruments.A set of data acquisition system based on high-speed USB is developed in this paper.The DMA data transfers is realized using CPLD and LPC2888 DMA channels.The driver and application programs are designed based on NI-VISA.Configuring VISA to control the USB device and LabWindows CVI is adopted to develop the application program.The experiment indicates that the system has a stable performance and the data transfers speed of the system is 128 Mb/s. |
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| Keywords: | data acquisition USB DMA VISA |
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