IP Configuration

lib/WiFiEsp/examples/WebClientRepeating/WebClientRepeating.ino

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+/*
+ WiFiEsp example: WebClientRepeating
+
+ This sketch connects to a web server and makes an HTTP request
+ using an Arduino ESP8266 module.
+ It repeats the HTTP call each 10 seconds.
+
+ For more details see: http://yaab-arduino.blogspot.com/p/wifiesp.html
+*/
+
+#include "WiFiEsp.h"
+
+// Emulate Serial1 on pins 6/7 if not present
+#ifndef HAVE_HWSERIAL1
+#include "SoftwareSerial.h"
+SoftwareSerial Serial1(6, 7); // RX, TX
+#endif
+
+char ssid[] = "Twim";            // your network SSID (name)
+char pass[] = "12345678";        // your network password
+int status = WL_IDLE_STATUS;     // the Wifi radio's status
+
+char server[] = "arduino.cc";
+
+unsigned long lastConnectionTime = 0;         // last time you connected to the server, in milliseconds
+const unsigned long postingInterval = 10000L; // delay between updates, in milliseconds
+
+// Initialize the Ethernet client object
+WiFiEspClient client;
+
+void setup()
+{
+  // initialize serial for debugging
+  Serial.begin(115200);
+  // initialize serial for ESP module
+  Serial1.begin(9600);
+  // initialize ESP module
+  WiFi.init(&Serial1);
+
+  // check for the presence of the shield
+  if (WiFi.status() == WL_NO_SHIELD) {
+    Serial.println("WiFi shield not present");
+    // don't continue
+    while (true);
+  }
+
+  // attempt to connect to WiFi network
+  while ( status != WL_CONNECTED) {
+    Serial.print("Attempting to connect to WPA SSID: ");
+    Serial.println(ssid);
+    // Connect to WPA/WPA2 network
+    status = WiFi.begin(ssid, pass);
+  }
+
+  Serial.println("You're connected to the network");
+  
+  printWifiStatus();
+}
+
+void loop()
+{
+  // if there's incoming data from the net connection send it out the serial port
+  // this is for debugging purposes only
+  while (client.available()) {
+    char c = client.read();
+    Serial.write(c);
+  }
+
+  // if 10 seconds have passed since your last connection,
+  // then connect again and send data
+  if (millis() - lastConnectionTime > postingInterval) {
+    httpRequest();
+  }
+}
+
+// this method makes a HTTP connection to the server
+void httpRequest()
+{
+  Serial.println();
+    
+  // close any connection before send a new request
+  // this will free the socket on the WiFi shield
+  client.stop();
+
+  // if there's a successful connection
+  if (client.connect(server, 80)) {
+    Serial.println("Connecting...");
+    
+    // send the HTTP PUT request
+    client.println(F("GET /asciilogo.txt HTTP/1.1"));
+    client.println(F("Host: arduino.cc"));
+    client.println("Connection: close");
+    client.println();
+
+    // note the time that the connection was made
+    lastConnectionTime = millis();
+  }
+  else {
+    // if you couldn't make a connection
+    Serial.println("Connection failed");
+  }
+}
+
+
+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 the received signal strength
+  long rssi = WiFi.RSSI();
+  Serial.print("Signal strength (RSSI):");
+  Serial.print(rssi);
+  Serial.println(" dBm");
+}