吉林大学学报(工学版)

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Implementation of drivers for multichannel data communication devices in Linux operating system

Zou Rong-shi1, 2，Guo Li-hong1，Si Yu-mei1,2，Zhao Hai-bo1,2   

  1. 1.Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun, 130033,China; 2.Graduate University of Chinese Academy of Sciences, Beijing 100039,China
  • Received:2006-03-20 Revised:2006-07-29 Online:2007-01-01 Published:2007-01-01
  • Contact: Guo Li-hong

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Abstract: The application of PCI bus in optoelectronics measurement device was introduced based on a selfdeveloped PCI communication card. The approaches of developing device drives in Linux system and related concepts, such as Virtual File System (VFS) mechanism were discussed. For this communication card, the kernel module programming method in Linux, the interruption of implementation and the Direct Memory Access (DMA) were illustrated. Experimental results show that, with this scheme, the local rate can reach 24.096 Mb/s. Comparing with conventional method the transmission and realtime response speed are significantly improved. Data can be steadily transmitted at 460 kb/s which meets the system requirement.

Key words: computer application, device driver, direct memory access (DMA), PCI bus, kernel

CLC Number: 

  • TP316
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