| AVR单片机串行口的软件扩展技术 |
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| 引用本文： | 刘亚平,邢济收,刘相权. AVR单片机串行口的软件扩展技术[J]. 北京机械工业学院学报, 2010, 0(4): 53-56 |
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| 作者姓名： | 刘亚平 邢济收 刘相权 |
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| 作者单位： | 北京信息科技大学智能机器人技术研究所,北京100192 |
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| 基金项目： | 北京市属高等学校人才强教计划资助项目（PHR20090518） |
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| 摘 要： | 针对单片机通信时串口资源不足的问题，提出了一种用软件来实现串行口扩展的方法。该方法利用2个普通的I／O引脚和一个外部中断就可以实现串口的功能。结合实例详细介绍了该方法的实现过程，包括硬件接口电路以及软件的设计。实践证明，该方法简单可靠，灵活有效，且节约成本，为串行口扩展提供了一种实用的方案。
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| 关 键 词： | 串行口扩展 模拟串口 串口通信 软件设计 AVR单片机 |
Software expansion technology of AVR singlechip's serial port |
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| LIU Ya-ping,XING Ji-shou,LIU Xiang-quan. Software expansion technology of AVR singlechip's serial port[J]. Journal of Beijing Institute of Machinery, 2010, 0(4): 53-56 |
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| Authors: | LIU Ya-ping XING Ji-shou LIU Xiang-quan |
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| Affiliation: | ( Intelligent robotics institute, Beijing Information Science and Technology University, Beijiug 100192, China ) |
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| Abstract: | As the serial port is not enough in the singlechip communicating, this article proposes a method that uses software to realize the serial port expansion. This method uses two common I/O pins and an external interrupt to realize the serial port＇ function. Tthe article introduces the detailed realization of this method combining with a specific design case, including hardware interface circuit and software design. Result proves that the method is simple, reliable, flexibl, effective, and cost-savings. It provides a practical solution for the expansion of the serial port. |
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| Keywords: | serial port expansion simulating serial port serial communication software design AVR singlechip |
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