WiFi examples

libraries/WiFi/examples/AP_SimpleWebServer/AP_SimpleWebServer.ino

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+/*
+  WiFi Web Server LED Blink
+
+  A simple web server that lets you blink an LED via the web.
+  This sketch will create a new access point (with no password).
+  It will then launch a new server and print out the IP address
+  to the Serial Monitor. From there, you can open that address in a web browser
+  to turn on and off the LED on pin 13.
+
+  If the IP address of your board is yourAddress:
+    http://yourAddress/H turns the LED on
+    http://yourAddress/L turns it off
+
+  created 25 Nov 2012
+  by Tom Igoe
+  adapted to WiFi AP by Adafruit
+ */
+
+#include <WiFi.h>
+#include "arduino_secrets.h" 
+///////please enter your sensitive data in the Secret tab/arduino_secrets.h
+char ssid[] = SECRET_SSID;        // your network SSID (name)
+char pass[] = SECRET_PASS;    // your network password (use for WPA, or use as key for WEP)
+int keyIndex = 0;                // your network key index number (needed only for WEP)
+
+int led =  LED_BUILTIN;
+int status = WL_IDLE_STATUS;
+WiFiServer server(80);
+
+void setup() {
+  //Initialize serial 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("Access Point Web Server");
+
+  pinMode(led, OUTPUT);      // set the LED pin mode
+
+  // check for the WiFi module:
+  if (WiFi.status() == WL_NO_MODULE) {
+    Serial.println("Communication with WiFi module failed!");
+    // don't continue
+    while (true);
+  }
+
+  WiFi.config(IPAddress(10, 0, 0, 1));
+
+  // print the network name (SSID);
+  Serial.print("Creating access point named: ");
+  Serial.println(ssid);
+
+  // Create open network. Change this line if you want to create an open network:
+  status = WiFi.beginAP(ssid, pass);
+  if (status != WL_AP_LISTENING) {
+    Serial.println("Creating access point failed");
+    // don't continue
+    while (true);
+  }
+
+  // start the web server on port 80
+  server.begin();
+
+  // you're connected now, so print out the status
+  printWiFiStatus();
+}
+
+
+void loop() {
+  // compare the previous status to the current status
+  if (status != WiFi.status()) {
+    // it has changed update the variable
+    status = WiFi.status();
+
+    if (status == WL_AP_CONNECTED) {
+      // a device has connected to the AP
+      Serial.println("Device connected to AP");
+    } else {
+      // a device has disconnected from the AP, and we are back in listening mode
+      Serial.println("Device disconnected from AP");
+    }
+  }
+
+  WiFiClient client = server.available();   // listen for incoming clients
+
+  if (client) {                             // if you get a client,
+    Serial.println("new client");           // print a message out the serial port
+    String currentLine = "";                // make a String to hold incoming data from the client
+    while (client.connected()) {            // loop while the client's connected
+      delayMicroseconds(10);                // This is required for the Arduino Nano RP2040 Connect - otherwise it will loop so fast that SPI will never be served.
+      if (client.available()) {             // if there's bytes to read from the client,
+        char c = client.read();             // read a byte, then
+        Serial.write(c);                    // print it out to the serial monitor
+        if (c == '\n') {                    // if the byte is a newline character
+
+          // if the current line is blank, you got two newline characters in a row.
+          // that's the end of the client HTTP request, so send a response:
+          if (currentLine.length() == 0) {
+            // HTTP headers always start with a response code (e.g. HTTP/1.1 200 OK)
+            // and a content-type so the client knows what's coming, then a blank line:
+            client.println("HTTP/1.1 200 OK");
+            client.println("Content-type:text/html");
+            client.println();
+
+            // the content of the HTTP response follows the header:
+            client.print("Click <a href=\"/H\">here</a> turn the LED on<br>");
+            client.print("Click <a href=\"/L\">here</a> turn the LED off<br>");
+
+            // The HTTP response ends with another blank line:
+            client.println();
+            // break out of the while loop:
+            break;
+          }
+          else {      // if you got a newline, then clear currentLine:
+            currentLine = "";
+          }
+        }
+        else if (c != '\r') {    // if you got anything else but a carriage return character,
+          currentLine += c;      // add it to the end of the currentLine
+        }
+
+        // Check to see if the client request was "GET /H" or "GET /L":
+        if (currentLine.endsWith("GET /H")) {
+          digitalWrite(led, HIGH);               // GET /H turns the LED on
+        }
+        if (currentLine.endsWith("GET /L")) {
+          digitalWrite(led, LOW);                // GET /L turns the LED off
+        }
+      }
+    }
+    // close the connection:
+    client.stop();
+    Serial.println("client disconnected");
+  }
+}
+
+void printWiFiStatus() {
+  // print the SSID of the network you're attached to:
+  Serial.print("SSID: ");
+  Serial.println(WiFi.SSID());
+
+  // print your WiFi shield's IP address:
+  IPAddress ip = WiFi.localIP();
+  Serial.print("IP Address: ");
+  Serial.println(ip);
+
+  // print where to go in a browser:
+  Serial.print("To see this page in action, open a browser to http://");
+  Serial.println(ip);
+
+}

libraries/WiFi/examples/AP_SimpleWebServer/arduino_secrets.h

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+// Both SSID and password must be 8 characters or longer
+#define SECRET_SSID ""
+#define SECRET_PASS ""

libraries/WiFi/examples/SimpleWebServerWiFi/SimpleWebServerWiFi.ino

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+/*
+  WiFi Web Server LED Blink
+
+ A simple web server that lets you blink an LED via the web.
+ This sketch will print the IP address of your WiFi module (once connected)
+ to the Serial Monitor. From there, you can open that address in a web browser
+ to turn on and off the LED on pin 9.
+
+ If the IP address of your board is yourAddress:
+ http://yourAddress/H turns the LED on
+ http://yourAddress/L turns it off
+
+ This example is written for a network using WPA encryption. For
+ WEP or WPA, change the WiFi.begin() call accordingly.
+
+ Circuit:
+ * Board with WiFi
+ * LED attached to pin 9
+
+ created 25 Nov 2012
+ by Tom Igoe
+ */
+
+#include <WiFi.h>
+
+#include "arduino_secrets.h" 
+///////please enter your sensitive data in the Secret tab/arduino_secrets.h
+char ssid[] = SECRET_SSID;        // your network SSID (name)
+char pass[] = SECRET_PASS;    // your network password (use for WPA, or use as key for WEP)
+int keyIndex = 0;                 // your network key index number (needed only for WEP)
+
+int status = WL_IDLE_STATUS;
+WiFiServer server(80);
+
+void setup() {
+  Serial.begin(9600);      // initialize serial communication
+  pinMode(LED_BUILTIN, OUTPUT);      // set the LED pin mode
+
+  // check for the WiFi module:
+  if (WiFi.status() == WL_NO_MODULE) {
+    Serial.println("Communication with WiFi module failed!");
+    // don't continue
+    while (true);
+  }
+
+  // attempt to connect to WiFi network:
+  while (status != WL_CONNECTED) {
+    Serial.print("Attempting to connect to Network named: ");
+    Serial.println(ssid);                   // print the network name (SSID);
+
+    // Connect to WPA/WPA2 network. Change this line if using open or WEP network:
+    status = WiFi.begin(ssid, pass);
+    // wait 3 seconds for connection:
+    delay(3000);
+  }
+  server.begin();                           // start the web server on port 80
+  printWifiStatus();                        // you're connected now, so print out the status
+}
+
+
+void loop() {
+  WiFiClient client = server.available();   // listen for incoming clients
+
+  if (client) {                             // if you get a client,
+    Serial.println("new client");           // print a message out the serial port
+    String currentLine = "";                // make a String to hold incoming data from the client
+    while (client.connected()) {            // loop while the client's connected
+      if (client.available()) {             // if there's bytes to read from the client,
+        char c = client.read();             // read a byte, then
+        Serial.write(c);                    // print it out to the serial monitor
+        if (c == '\n') {                    // if the byte is a newline character
+
+          // if the current line is blank, you got two newline characters in a row.
+          // that's the end of the client HTTP request, so send a response:
+          if (currentLine.length() == 0) {
+            // HTTP headers always start with a response code (e.g. HTTP/1.1 200 OK)
+            // and a content-type so the client knows what's coming, then a blank line:
+            client.println("HTTP/1.1 200 OK");
+            client.println("Content-type:text/html");
+            client.println();
+
+            // the content of the HTTP response follows the header:
+            client.print("Click <a href=\"/H\">here</a> turn the LED on<br>");
+            client.print("Click <a href=\"/L\">here</a> turn the LED off<br>");
+
+            // The HTTP response ends with another blank line:
+            client.println();
+            // break out of the while loop:
+            break;
+          } else {    // if you got a newline, then clear currentLine:
+            currentLine = "";
+          }
+        } else if (c != '\r') {  // if you got anything else but a carriage return character,
+          currentLine += c;      // add it to the end of the currentLine
+        }
+
+        // Check to see if the client request was "GET /H" or "GET /L":
+        if (currentLine.endsWith("GET /H")) {
+          digitalWrite(LED_BUILTIN, HIGH);               // GET /H turns the LED on
+        }
+        if (currentLine.endsWith("GET /L")) {
+          digitalWrite(LED_BUILTIN, LOW);                // GET /L turns the LED off
+        }
+      }
+    }
+    // close the connection:
+    client.stop();
+    Serial.println("client disconnected");
+  }
+}
+
+void printWifiStatus() {
+  // print the SSID of the network you're attached to:
+  Serial.print("SSID: ");
+  Serial.println(WiFi.SSID());
+
+  // print your board's IP address:
+  IPAddress ip = WiFi.localIP();
+  Serial.print("IP Address: ");
+  Serial.println(ip);
+
+  // print the received signal strength:
+  long rssi = WiFi.RSSI();
+  Serial.print("signal strength (RSSI):");
+  Serial.print(rssi);
+  Serial.println(" dBm");
+  // print where to go in a browser:
+  Serial.print("To see this page in action, open a browser to http://");
+  Serial.println(ip);
+}

libraries/WiFi/examples/SimpleWebServerWiFi/arduino_secrets.h

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+#define SECRET_SSID ""
+#define SECRET_PASS ""

libraries/WiFi/examples/WiFiAdvancedChatServer/WiFiAdvancedChatServer.ino

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+/*
+ Advanced WiFi Chat Server
+
+ A more advanced server that distributes any incoming messages
+ to all connected clients but the client the message comes from.
+ To use, telnet to your device's IP address and type.
+
+ Circuit:
+  * Board with WiFi
+
+ */
+
+#include <WiFi.h>
+
+#include "arduino_secrets.h"
+///////please enter your sensitive data in the Secret tab/arduino_secrets.h
+char ssid[] = SECRET_SSID;        // your network SSID (name)
+char pass[] = SECRET_PASS;    // your network password (use for WPA, or use as key for WEP)
+
+int status = WL_IDLE_STATUS;
+
+// telnet defaults to port 23
+WiFiServer server(23);
+
+WiFiClient clients[8];
+
+void setup() {
+  //Initialize serial and wait for port to open:
+  Serial.begin(9600);
+  while (!Serial) {
+    ; // wait for serial port to connect. Needed for native USB port only
+  }
+
+  // check for the WiFi module:
+  if (WiFi.status() == WL_NO_MODULE) {
+    Serial.println("Communication with WiFi module failed!");
+    // don't continue
+    while (true);
+  }
+
+  // attempt to connect to WiFi network:
+  while (status != WL_CONNECTED) {
+    Serial.print("Attempting to connect to SSID: ");
+    Serial.println(ssid);
+    // Connect to WPA/WPA2 network. Change this line if using open network:
+    status = WiFi.begin(ssid, pass);
+
+    // wait 3 seconds for connection:
+    delay(3000);
+  }
+
+  // start the server:
+  server.begin();
+
+  Serial.print("Chat server address:");
+  Serial.println(WiFi.localIP());
+}
+
+void loop() {
+  // check for any new client connecting, and say hello (before any incoming data)
+  WiFiClient newClient = server.accept();
+  if (newClient) {
+    for (byte i=0; i < 8; i++) {
+      if (!clients[i]) {
+        Serial.print("We have a new client #");
+        Serial.println(i);
+        newClient.print("Hello, client number: ");
+        newClient.println(i);
+        // Once we "accept", the client is no longer tracked by WiFiServer
+        // so we must store it into our list of clients
+        clients[i] = newClient;
+        break;
+      }
+    }
+  }
+
+  // check for incoming data from all clients
+  for (byte i=0; i < 8; i++) {
+    if (clients[i] && clients[i].available() > 0) {
+      // read bytes from a client
+      byte buffer[80];
+      int count = clients[i].read(buffer, 80);
+      // write the bytes to all other connected clients
+      for (byte j=0; j < 8; j++) {
+        if (j != i && clients[j].connected()) {
+          clients[j].write(buffer, count);
+        }
+      }
+    }
+  }
+
+  // stop any clients which disconnect
+  for (byte i=0; i < 8; i++) {
+    if (clients[i] && !clients[i].connected()) {
+      Serial.print("disconnect client #");
+      Serial.println(i);
+      clients[i].stop();
+    }
+  }
+
+}

libraries/WiFi/examples/WiFiAdvancedChatServer/arduino_secrets.h

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+#define SECRET_SSID ""
+#define SECRET_PASS ""