摘要
该文以Atmel公司ARM7-AT91SAM7x256为硬件平台,以嵌入式操作系统-μC/OS-II、嵌入式TCP/IP协议-LwIP为软件平台,详细介绍了嵌入式Web服务模块的硬件组成、软件流程以及嵌入式操作系统和TCP/IP协议栈的移植方法。最后以该模块嵌入差压变送器为例,介绍了通过网络服务器实现对差压变送器零点、满度等参数的读取和设置。总线供电的以太网通信提高了变送器输出精度和组态软件设计灵活性,操作、维护简单,目前已实现小批量生产。
By taking Atmel's ARM7-AT91SAMTx256 as the hardware platform, and operating system-μC/OS-Ⅱ, embedded TCP/IP protocol-LwlP as the software platform, described in detail the realization of hardware, software of the embedded Web service modules and the transplant means of embedded OS, TCP/IP protocol suite. At last, through embedding this module into differential pressure transmitter, this paper also illustrates how to read and set the zero and full range of transmitter. Ethernet correspondence base on POE increased output precision and the mobility of configuration software design, it is simple in operation and maintenance and has realized short run produc- tion presently.
出处
《自动化与仪表》
北大核心
2010年第5期8-10,共3页
Automation & Instrumentation