| DMA传输方式下高速数据采集的DLL实现 |
| |
| 引用本文： | 杨忠,沈春林.DMA传输方式下高速数据采集的DLL实现[J].计算机工程与应用,2004,40(22):107-109. |
| |
| 作者姓名： | 杨忠 沈春林 |
| |
| 作者单位： | 南京航空航天大学自动化学院,南京,210016 |
| |
| 基金项目： | 江苏省高校自然科学基金:“软测量技术在电力测试与分析中的应用”(编号:02KJB470006) |
| |
| 摘 要： | 数据采集设备与PC主机之间的高速数据传输有FIFO(先进后出)和DMA两种主要方式。为在Windows环境下实现基于DMA传输方式的高速数据采集，研究了一种DLL方法。首先介绍了DMA传输方式下高速数据采集的基本原理，接着在Windriver底层驱动平台上构造了一个高速数据采集DLL，包括用于数据采集控制和DMA控制器操作的多个函数模块，最后给出用户应用程序调用该DLL进行高速数据采集的详细方法。
|
| 关 键 词： | DMA传输 高速数据采集 DLL |
| 文章编号： | 1002-8331-(2004)22-0107-03 |
A DLL Realization for High-speed Data Acquisition with DMA Data Transfer |
| |
| Yang Zhong Shen Chunlin.A DLL Realization for High-speed Data Acquisition with DMA Data Transfer[J].Computer Engineering and Applications,2004,40(22):107-109. |
| |
| Authors: | Yang Zhong Shen Chunlin |
| |
| Abstract: | FIFO(first in first out )and DMA are two primary modes for the high-speed data transfer between the data acquisition(DAQ)equipments and PCs.A DLL method is studied to realize the high-speed DAQ with DMA data transfer in MS Windows.The basic principles of high-speed DAQ with DMA data transfer are introduced firstly.With the Win-driver's bottom-level driver,a high-speed DAQ DLL is constructed,which includes multiple functions for the operations of DAQ hardware and DMA registers.Finally,a high-speed DAQ method by calling the DAQ DLL in user applications is put forward in detail. |
| |
| Keywords: | DMA data transfer high-speed data acquisition DLL |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
