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Proceedings Paper

Data acquisition system based on the Nios II for a CCD camera
Author(s): Binhua Li; Keliang Hu; Chunrong Wang; Yangbing Liu; Chun He
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Paper Abstract

The FPGA with Avalon Bus architecture and Nios soft-core processor developed by Altera Corporation is an advanced embedded solution for control and interface systems. A CCD data acquisition system with an Ethernet terminal port based on the TCP/IP protocol is implemented in NAOC, which is composed of a piece of interface board with an Altera's FPGA, 32MB SDRAM and some other accessory devices integrated on it, and two packages of control software used in the Nios II embedded processor and the remote host PC respectively. The system is used to replace a 7200 series image acquisition card which is inserted in a control and data acquisition PC, and to download commands to an existing CCD camera and collect image data from the camera to the PC. The embedded chip in the system is a Cyclone FPGA with a configurable Nios II soft-core processor. Hardware structure of the system, configuration for the embedded soft-core processor, and peripherals of the processor in the PFGA are described. The C program run in the Nios II embedded system is built in the Nios II IDE kits and the C++ program used in the PC is developed in the Microsoft's Visual C++ environment. Some key techniques in design and implementation of the C and VC++ programs are presented, including the downloading of the camera commands, initialization of the camera, DMA control, TCP/IP communication and UDP data uploading.

Paper Details

Date Published: 27 June 2006
PDF: 8 pages
Proc. SPIE 6274, Advanced Software and Control for Astronomy, 62741C (27 June 2006); doi: 10.1117/12.670751
Show Author Affiliations
Binhua Li, Kunming Univ. of Science and Technology (China)
Keliang Hu, National Astronomical Observatories (China)
Chunrong Wang, Kunming Univ. of Science and Technology (China)
Yangbing Liu, National Astronomical Observatories (China)
Chun He, Kunming Univ. of Science and Technology (China)

Published in SPIE Proceedings Vol. 6274:
Advanced Software and Control for Astronomy
Hilton Lewis; Alan Bridger, Editor(s)

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