Add samples for the ESP8266WiFi library

libraries/ESP8266WiFi/examples/WiFiClient/WiFiClient.ino

@@ -0,0 +1,85 @@
+/*
+ *  This sketch sends data via HTTP GET requests to data.sparkfun.com service.
+ *
+ *  You need to get streamId and privateKey at data.sparkfun.com and paste them
+ *  below. Or just customize this script to talk to other HTTP servers.
+ *
+ */
+
+#include <ESP8266WiFi.h>
+
+const char* ssid     = "your-ssid";
+const char* password = "your-password";
+
+const char* host = "data.sparkfun.com";
+const char* streamId   = "....................";
+const char* privateKey = "....................";
+
+void setup() {
+  Serial.begin(115200);
+  delay(10);
+
+  // We start by connecting to a WiFi network
+
+  Serial.println();
+  Serial.println();
+  Serial.print("Connecting to ");
+  Serial.println(ssid);
+  
+  WiFi.begin(ssid, password);
+  
+  while (WiFi.status() != WL_CONNECTED) {
+    delay(500);
+    Serial.print(".");
+  }
+
+  Serial.println("");
+  Serial.println("WiFi connected");  
+  Serial.println("IP address: ");
+  Serial.println(WiFi.localIP());
+}
+
+int value = 0;
+
+void loop() {
+  delay(5000);
+  ++value;
+
+  Serial.print("connecting to ");
+  Serial.println(host);
+  
+  // Use WiFiClient class to create TCP connections
+  WiFiClient client;
+  const int httpPort = 80;
+  if (!client.connect(host, httpPort)) {
+    Serial.println("connection failed");
+    return;
+  }
+  
+  // We now create a URI for the request
+  String url = "/input/";
+  url += streamId;
+  url += "?private_key=";
+  url += privateKey;
+  url += "&value=";
+  url += value;
+  
+  Serial.print("Requesting URL: ");
+  Serial.println(url);
+  
+  // This will send the request to the server
+  client.print(String("GET ") + url + " HTTP/1.1\r\n" +
+               "Host: " + host + "\r\n" + 
+               "Connection: close\r\n\r\n");
+  delay(10);
+  
+  // Read all the lines of the reply from server and print them to Serial
+  while(client.available()){
+    String line = client.readStringUntil('\r');
+    Serial.print(line);
+  }
+  
+  Serial.println();
+  Serial.println("closing connection");
+}
+

libraries/ESP8266WiFi/examples/WiFiScan/WiFiScan.ino

@@ -0,0 +1,48 @@
+/*
+ *  This sketch demonstrates how to scan WiFi networks. 
+ *  The API is almost the same as with the WiFi Shield library, 
+ *  the most obvious difference being the different file you need to include:
+ */
+#include "ESP8266WiFi.h"
+
+void setup() {
+  Serial.begin(115200);
+
+  // Set WiFi to station mode and disconnect from an AP if it was previously connected
+  WiFi.mode(WIFI_STA);
+  WiFi.disconnect();
+  delay(100);
+
+  Serial.println("Setup done");
+}
+
+void loop() {
+  Serial.println("scan start");
+
+  // WiFi.scanNetworks will return the number of networks found
+  int n = WiFi.scanNetworks();
+  Serial.println("scan done");
+  if (n == 0)
+    Serial.println("no networks found");
+  else
+  {
+    Serial.print(n);
+    Serial.println(" networks found");
+    for (int i = 0; i < n; ++i)
+    {
+      // Print SSID and RSSI for each network found
+      Serial.print(i + 1);
+      Serial.print(": ");
+      Serial.print(WiFi.SSID(i));
+      Serial.print(" (");
+      Serial.print(WiFi.RSSI(i));
+      Serial.print(")");
+      Serial.println((WiFi.encryptionType(i) == ENC_TYPE_NONE)?" ":"*");
+      delay(10);
+    }
+  }
+  Serial.println("");
+
+  // Wait a bit before scanning again
+  delay(5000);
+}

libraries/ESP8266WiFi/examples/WiFiWebServer/WiFiWebServer.ino

@@ -0,0 +1,99 @@
+/*
+ *  This sketch demonstrates how to set up a simple HTTP-like server.
+ *  The server will set a GPIO pin depending on the request
+ *    http://server_ip/gpio/0 will set the GPIO2 low,
+ *    http://server_ip/gpio/1 will set the GPIO2 high
+ *  server_ip is the IP address of the ESP8266 module, will be 
+ *  printed to Serial when the module is connected.
+ */
+
+#include <ESP8266WiFi.h>
+
+const char* ssid = "your-ssid";
+const char* password = "your-password";
+
+// Create an instance of the server
+// specify the port to listen on (first argument)
+// and the receive buffer size (second argument)
+WiFiServer server(80, 2048);  
+
+void setup() {
+  Serial.begin(115200);
+  delay(10);
+
+  // prepare GPIO2
+  pinMode(2, OUTPUT);
+  digitalWrite(2, 0);
+  
+  // Connect to WiFi network
+  Serial.println();
+  Serial.println();
+  Serial.print("Connecting to ");
+  Serial.println(ssid);
+  
+  WiFi.begin(ssid, password);
+  
+  while (WiFi.status() != WL_CONNECTED) {
+    delay(500);
+    Serial.print(".");
+  }
+  Serial.println("");
+  Serial.println("WiFi connected");
+  
+  // Start the server
+  server.begin();
+  Serial.println("Server started");
+
+  // Print the IP address
+  Serial.println(WiFi.localIP());
+}
+
+void loop() {
+  // Check if a client has connected
+  WiFiClient client = server.available();
+  if (!client) {
+    return;
+  }
+  
+  // Wait until the client sends some data
+  Serial.println("new client");
+  while(!client.available()){
+    delay(1);
+  }
+  
+  // Read the first line of the request
+  String req = client.readStringUntil('\r');
+  Serial.println(req);
+  client.flush();
+  
+  // Match the request
+  int val;
+  if (req.indexOf("/gpio/0") != -1)
+    val = 0;
+  else if (req.indexOf("/gpio/1") != -1)
+    val = 1;
+  else {
+    Serial.println("invalid request");
+    client.stop();
+    return;
+  }
+
+  // Set GPIO2 according to the request
+  digitalWrite(2, val);
+  
+  client.flush();
+
+  // Prepare the response
+  String s = "HTTP/1.1 200 OK\r\nContent-Type: text/html\r\n\r\n<!DOCTYPE HTML>\r\n<html>\r\nGPIO is now ";
+  s += (val)?"high":"low";
+  s += "</html>\n";
+
+  // Send the response to the client
+  client.print(s);
+  delay(1);
+  Serial.println("Client disonnected");
+
+  // The client will actually be disconnected 
+  // when the function returns and 'client' object is detroyed
+}
+