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Proceedings of 2009 International Symposium on Computer Science and Computational Technology (ISCSCT 2009)

Huangshan, China, December 26-28, 2009

Editors: Fei Yu, Guangxue Yue, Jian Shu, Yun Liu

AP Catalog Number: AP-PROC-CS-09CN005

ISBN: 978-952-5726-07-7 (Print), 978-952-5726-08-4 (CD-ROM)

Page(s): 402-405

Design and Implementation of Multi-Serial Ports Expansion Based on ARM Embedded Linux

Yunmi Fu, Yiqin Lu, Yanhui Zeng, and Bin Liu

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With the widely use of communication and intelligent devices,  more and more extension modules are attached to an arm embedded system, most of them are through serial port. Thus to extend the serial ports of an arm system is necessary. This paper proposes a method of serial port expansion based on SC16C554. With SC16C554, system bus is used to extend four serial ports, which have the standard modem interface and work independently. Details of working principle of hardware and design method of device drivers of serial port expansion are presented.

Index Terms

SC16C554, S3C2410A, Serial Port Expansion, Device Driver

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