在AT91SAM7X平台上，使用lwip网络协议栈来实现和互联网通信，支持ARP,TCP,UDP等基础协议，方使实现远距离和大数据传输-On AT91SAM7X platform, using lwip network protocol stack to achieve and Internet communications, support ARP, TCP, UDP and other basic agreement, parties make to achieve long-range a