基于I2C总线端口扩展的编码式水位采集模块设计
oded-water-level-meter Module Design Based on the I2C BUS Port Expansion
本文针对在现有工程嵌入式系统扩展端口的需要，结合项目中P89LPC921采集水文数据并进行传输的实际应用，介绍了利用I2C总线进行端口扩展的编码式水位采集模块的设计方案，包括整个硬件模块连接问题，LPC2131的软件设计，P89LPC921的软件设计，以及编程时应注意的一些问题。
his paper works embedded in the existing system needs expansion port with the project in the P89LPC921 hydrological data acquisition and transmission of practical applications, introduced to the use of I2C bus for port expansion code-level acquisition module design, including the hardware modules, the software design LPC2131, P89LPC921 software design, programming, as well as some of the issues they should pay attention to.
崔常滨、黎洪生
电子电路
端口扩展，I2C总线，LPC2131，P89LPC921，水位采集模块
Expansion port，I2C Bus，P89LPC921，LPC2131，Water-level-meter module
崔常滨,黎洪生.基于I2C总线端口扩展的编码式水位采集模块设计[EB/OL].(2008-01-31)[2025-08-02].http://www.paper.edu.cn/releasepaper/content/200801-896.点此复制
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