Arduino Ethernet W5100網絡擴展模組，可以使Arduino成為簡單的Web服務器，或者通過網絡控制讀寫Arduino的數字和模擬接口等網絡應用。
可直接使用IDE中的Ethernet庫文件便可實現一個簡單Web服務器。
同時該版本的支持mini SD卡（TF卡）讀寫
該擴展板採用了可堆疊的設計，可直接插到Arduino上，同時我們的其他擴展板也可以插上去。
代碼：
/*
* Web Server
*
* A simple web server that shows the value of the analog input pins.
*/
#include
byte mac[] = { 0xDE, 0xAD, 0xBE, 0xEF, 0xFE, 0xED };
byte ip[] = { 192, 168, 0, 15 };
Server server(80);
void setup()
{
Ethernet.begin(mac, ip);
server.begin();
}
void loop()
{
Client client = server.available();
if (client) {
// an http request ends with a blank
boolean current_ _is_blank = true;
while (client.connected()) {
if (client.available()) {
char c = client.read();
// if we've gotten to the end of the a new
// character) and the blank, the http request has ended,
// so we can send a reply
if (c == '\n' && current_ _is_blank) {
// send a standard http response header
client.println("HTTP/1.1 200 OK");
client.println("Content-Type: text/html");
client.println();
// output the value of each analog input pin
client.print("welcome to tinyos");
client.println("
");
client.print("//*************************************");
client.println("
");
client.print( );
client.println("
");
client.print("//*************************************");
client.println("
");
for (int i = 0; i < 6; i++) {
client.print("analog input ");
client.print(i);
client.print(" is ");
client.print(analogRead(i));
client.println("
");
}
break;
}
if (c == '\n') {
// we're starting a new
current_ _is_blank = true;
} else if (c != '\r') {
// we've gotten a character on the current
current_ _is_blank = false;
}
}
}
client.stop();
}
}
