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115 lines
3.0 KiB
C++
115 lines
3.0 KiB
C++
/*
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Web Server
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A simple web server that shows the value of the analog input pins.
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using a WiFi shield.
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This example is written for a network using WPA encryption. For
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WEP or WPA, change the Wifi.begin() call accordingly.
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Circuit:
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* WiFi shield attached
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* Analog inputs attached to pins A0 through A5 (optional)
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created 13 July 2010
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by dlf (Metodo2 srl)
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modified 4 Mar 2012
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by Tom Igoe
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*/
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#include <SPI.h>
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#include <WiFi.h>
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char ssid[] = "YourNetwork"; // your network SSID (name)
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char pass[] = "password"; // your network password (use for WPA, or use as key for WEP)
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int keyIndex = 0; // your network key Index number (needed only for WEP)
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int status = WL_IDLE_STATUS;
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WiFiServer server(80);
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void setup() {
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// initialize serial:
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Serial.begin(9600);
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Serial.println("Attempting to connect to Wifi network...");
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Serial.print("SSID: ");
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Serial.println(ssid);
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status = WiFi.begin(ssid, pass);
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if ( status != WL_CONNECTED) {
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Serial.println("Couldn't get a wifi connection");
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while(true);
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}
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else {
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server.begin();
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Serial.print("Connected to wifi.");
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printWifiStatus();
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}
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}
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void loop() {
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// listen for incoming clients
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WiFiClient client = server.available();
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if (client) {
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// an http request ends with a blank line
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boolean currentLineIsBlank = true;
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while (client.connected()) {
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if (client.available()) {
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char c = client.read();
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// if you've gotten to the end of the line (received a newline
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// character) and the line is blank, the http request has ended,
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// so you can send a reply
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if (c == '\n' && currentLineIsBlank) {
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// send a standard http response header
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client.println("HTTP/1.1 200 OK");
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client.println("Content-Type: text/html");
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client.println();
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client.println("<html>");
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// output the value of each analog input pin
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for (int analogChannel = 0; analogChannel < 6; analogChannel++) {
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client.print("analog input ");
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client.print(analogChannel);
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client.print(" is ");
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client.print(analogRead(analogChannel));
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client.println("<br />");
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}
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client.println("</html>");
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break;
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}
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if (c == '\n') {
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// you're starting a new line
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currentLineIsBlank = true;
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}
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else if (c != '\r') {
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// you've gotten a character on the current line
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currentLineIsBlank = false;
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}
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}
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}
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// give the web browser time to receive the data
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delay(1);
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// close the connection:
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client.stop();
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}
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}
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void printWifiStatus() {
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// print the SSID of the network you're attached to:
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Serial.print("SSID: ");
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Serial.println(WiFi.SSID());
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// print your WiFi shield's IP address:
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IPAddress ip = WiFi.localIP();
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Serial.print("IP Address: ");
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Serial.println(ip);
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// print the received signal strength:
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long rssi = WiFi.RSSI();
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Serial.print("signal strength (RSSI):");
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Serial.print(rssi);
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Serial.println(" dBm");
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}
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