Design of preverifying Serial-Ethernet communication gateway based on LM3S8962

Author

Shuangye Chen ; Dongyue Zheng ; Rujun Yang

Author_Institution

Coll. of Electron. Inf. & Control Eng., Beijing Univ. of Technol., Beijing, China

fYear

2013

fDate

4-7 Aug. 2013

Firstpage

1620

Lastpage

1624

Abstract

To connect different RS485 networks and transmit data on Ethernet without changing the current network structures and configurations, a preverifying Serial-Ethernet communication gateway is designed based on an ARM Cortex-M3 architecture microcontroller LM3S8962. It transfers the data through its integrated Ethernet controller, MAC link layer and PHY physical layer, as well as 2 Uart interfaces. The real-time operation system uC/OS II v2.89 has been ported and LWIP protocol stack also runs on the system. The preverifying function is optional applying to different communication protocols. Therefore, it is effective to reduce the load and collisions over the Ethernet. Certified the gateway accomplished, two RS485 bus with Modbus Protocol could connect via Ethernet to achieve a low-cost, long distance, transparent and reliable data transmission.

Keywords

internetworking; local area networks; microcontrollers; transport protocols; 2 Uart interfaces; ARM Cortex-M3 architecture microcontroller; Ethernet controller; LM3S8962; LWIP protocol stack; MAC link layer; PHY physical layer; RS485 bus; RS485 networks; communication protocols; modbus protocol; preverifying Serial-Ethernet communication gateway; real-time operation system; uC/OS II v2.89 real-time operation system; Hardware; IP networks; Logic gates; Microcontrollers; Protocols; Real-time systems; Standards; Ethernet; RS485; Transparently Transfer; preverify;

fLanguage

English

Publisher

ieee

Conference_Titel

Mechatronics and Automation (ICMA), 2013 IEEE International Conference on

Conference_Location

Takamatsu

Print_ISBN

978-1-4673-5557-5

Type

conf

DOI

10.1109/ICMA.2013.6618157

Filename

6618157