资 源 简 介
神经元器件作为LonWorks技术的核心控制器件，具有I2C总线功能，能够在资源有限的情况下对系统进行扩展。介绍了I2C总线通信技术、神经元器件FT3150和端口扩展器件PCF8574，并从硬件设计和软件编程给出了FT3150通过PCF8574进行端口扩展的应用实例。
Abstract:
As the central control part of LonWorks technology, neuron chip can conveniently extend the system with the simple I2C bus funcTIon under limited resources.I2C bus communicaTIon technology, LonWorks neuron chip FT3150 and port extension chip PCF8574 are introduced in this paper. A port extension applicaTIon example between FT3150 and PCF8574 is presented according to the designing of hardware and the programming of software.
