| /* | |
| 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 02 Sept 2015 | |
| by Arturo Guadalupi | |
| */ | |
| // 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 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() { | |
| // You can use Ethernet.init(pin) to configure the CS pin | |
| //Ethernet.init(10); // Most Arduino shields | |
| //Ethernet.init(5); // MKR ETH shield | |
| //Ethernet.init(0); // Teensy 2.0 | |
| //Ethernet.init(20); // Teensy++ 2.0 | |
| //Ethernet.init(15); // ESP8266 with Adafruit Featherwing Ethernet | |
| //Ethernet.init(33); // ESP32 with Adafruit Featherwing Ethernet | |
| // Open serial communications and wait for port to open: | |
| Serial.begin(9600); | |
| while (!Serial) { | |
| ; // wait for serial port to connect. Needed for native USB port only | |
| } | |
| Serial.println("Ethernet WebServer Example"); | |
| // start the Ethernet connection and the server: | |
| Ethernet.begin(mac, ip); | |
| // Check for Ethernet hardware present | |
| if (Ethernet.hardwareStatus() == EthernetNoHardware) { | |
| Serial.println("Ethernet shield was not found. Sorry, can't run without hardware. :("); | |
| while (true) { | |
| delay(1); // do nothing, no point running without Ethernet hardware | |
| } | |
| } | |
| if (Ethernet.linkStatus() == LinkOFF) { | |
| Serial.println("Ethernet cable is not connected."); | |
| } | |
| // start the server | |
| server.begin(); | |
| Serial.print("server is at "); | |
| Serial.println(Ethernet.localIP()); | |
| } | |
| 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: 5"); // refresh the page automatically every 5 sec | |
| client.println(); | |
| client.println("<!DOCTYPE HTML>"); | |
| client.println("<html>"); | |
| // output the value of each analog input pin | |
| for (int analogChannel = 0; analogChannel < 6; analogChannel++) { | |
| int sensorReading = analogRead(analogChannel); | |
| client.print("analog input "); | |
| client.print(analogChannel); | |
| client.print(" is "); | |
| client.print(sensorReading); | |
| client.println("<br />"); | |
| } | |
| client.println("</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 disconnected"); | |
| } | |
| } | |