| Title |
Development of the Embedded Wireless LAN Technology for Power Utility Equipments |
| Authors |
Su-Goog Shon ; Jong-Jung Woo |
| Keywords |
Embedded controller ; WLAN ; Power utility ; TCP/IP |
| Abstract |
This paper describes the development of an embedded wireless LAN controller which can be in parallel operated with an existing utility controller. The embedded controller mainly consists of Prism® 2.5 chip set and Atmega 128 microcontroller. In order to communicate over the network, the controller including TCP/IP stack (IP, TCP, UDP, and ICMP), telnet, and X/Z modem has been developed. For a specific application, we have proposed an special method to convert data structure between TCP/IP and X/Z modem and a data buffer algorithm to minimize the RAM memory usage. Finally, the correctness and performance of the protocols are tested and verified using CommView® and DU®. The development is satisfactorily operated only for 3,381 bytes of RAM usage without sacrificing interoperability between hosts. |