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