基于LPC2378的嵌入式多协议网关设计

摘要

The gateway based on ARM7 processor LPC2378 is designed to impIement interconnection communication of RS232,RS485,CAN bus and Ethernet with various of communication interface chip.The design of the gateway is introduced from twoaspects of hardware and software,the hardware part is the interface circuit design of each communication moduIe,and thesoftware part is introduced how to impIement the data protocoI conversion.This gateway with good practicabiIity and appIicationprospect has effectiveIy soIved the probIem of connection between industriaI controI network devices and information Iayer.%网关以ARM7处理器LPC2378为核心，结合多种通信接口芯片，实现了RS232、RS485、CAN总线和以太网的互连通信。从软硬件两方面介绍了网关的设计，硬件部分包括各通信模块的接口电路设计，软件部分介绍了模块数据协议转换的实现。该网关很好地解决了工控网络设备层和信息层的衔接问题，具有良好的实用性和应用前景。