时效性提醒：本文首次编写发布于8年前。
自带的例子修改而来，加了点简单的样式
代码：
/*
Web Server
A simple web server that shows the value of the analog input pins.
using an Arduino Wiznet Ethernet shield.
Circuit:
* Ethernet shield attached to pins 10, 11, 12, 13
* Analog inputs attached to pins A0 through A5 (optional)
created 18 Dec 2009
by David A. Mellis
modified 9 Apr 2012
by Tom Igoe
modified 31 Dec 2015
by SiYu Wu
*/
#include <SPI.h>
#include <Ethernet.h>
// Enter a MAC address and IP address for your controller below.
// The IP address will be dependent on your local network:
byte mac[] = {
0xDE, 0xAD, 0xBE, 0xEF, 0xFE, 0xED };
IPAddress static_ip(192,168,1,177);
// Initialize the Ethernet server library
// with the IP address and port you want to use
// (port 80 is default for HTTP):
EthernetServer server(80);
void setup() {
for(int i=2;i<14;i++){
pinMode(i, INPUT_PULLUP);
}
// Open serial communications and wait for port to open:
Serial.begin(9600);
// while (!Serial) {
// ; // wait for serial port to connect. Needed for Leonardo only
// }
// start the Ethernet connection and the server:
Serial.print("Trying to configure Ethernet using DHCP...");
if (Ethernet.begin(mac) == 0){
Serial.println("Failed");
Serial.println("Use static IP");
Ethernet.begin(mac, static_ip);
}else{
Serial.println("Success");
}
server.begin();
Serial.print("Web server is at ");
Serial.println(Ethernet.localIP());
pinMode(13, OUTPUT);
digitalWrite(13, HIGH);
}
void loop() {
// listen for incoming clients
EthernetClient client = server.available();
if (client) {
Serial.println("New client");
// an http request ends with a blank line
boolean currentLineIsBlank = true;
while (client.connected()) {
if (client.available()) {
char c = client.read();
// Serial.write(c);
// if you've gotten to the end of the line (received a newline
// character) and the line is blank, the http request has ended,
// so you can send a reply
if (c == 'n' && currentLineIsBlank) {
// send a standard http response header
client.println("HTTP/1.1 200 OK");
client.println("Content-Type: text/html");
client.println("Connection: close"); // the connection will be closed after completion of the response
client.println("Refresh: 2"); // refresh the page automatically every 1 sec
client.println();
client.println("<!DOCTYPE HTML>");
client.println("<html style='background:#39ABFF;height:100%;'><body style='height:100%;width:360px;margin:0 auto 0 120px;background:#0072C6;color:#fff;'>");
client.println("<title>Arduino IO Status</title><div style='padding:20px 50px;'><h1 style='font-weight:400;'>Arduino IO</h1>");
client.println("<span style='width:175px;display:inline-block;'><b>Pin</b></span><b>Value</b><br/>");
// output the value of each analog input pin
for (int analogChannel = 0; analogChannel < 6; analogChannel++) {
int sensorReading = analogRead(analogChannel);
client.print("<span style='width:175px;display:inline-block;'>Analog input ");
client.print(analogChannel);
client.print("</span>");
client.print(sensorReading);
client.println("<br />");
}
client.println("<br />");
for (int digitalChannel = 2; digitalChannel < 14; digitalChannel++) {
int sensorReading = digitalRead(digitalChannel);
client.print("<span style='width:175px;display:inline-block;'>Digital input ");
client.print(digitalChannel);
client.print("</span>");
if(sensorReading){
client.print("HIGH");
}else{
client.print("LOW");
}
client.println("<br />");
}
client.println("</div></body></html>");
break;
}
if (c == 'n') {
// you're starting a new line
currentLineIsBlank = true;
}
else if (c != 'r') {
// you've gotten a character on the current line
currentLineIsBlank = false;
}
}
}
// give the web browser time to receive the data
delay(1);
// close the connection:
client.stop();
Serial.println("client disonnected");
}
}
