137 lines
3.9 KiB
Arduino
137 lines
3.9 KiB
Arduino
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/*
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WiFiEsp example: WebServer
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A simple web server that shows the value of the analog input
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pins via a web page using an ESP8266 module.
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This sketch will print the IP address of your ESP8266 module (once connected)
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to the Serial monitor. From there, you can open that address in a web browser
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to display the web page.
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The web page will be automatically refreshed each 20 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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int reqCount = 0; // number of requests received
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WiFiEspServer server(80);
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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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// start the web server on port 80
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server.begin();
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}
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void loop()
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{
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// listen for incoming clients
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WiFiEspClient client = server.available();
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if (client) {
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Serial.println("New 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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Serial.write(c);
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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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Serial.println("Sending response");
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// send a standard http response header
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// use \r\n instead of many println statements to speedup data send
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client.print(
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"HTTP/1.1 200 OK\r\n"
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"Content-Type: text/html\r\n"
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"Connection: close\r\n" // the connection will be closed after completion of the response
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"Refresh: 20\r\n" // refresh the page automatically every 20 sec
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"\r\n");
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client.print("<!DOCTYPE HTML>\r\n");
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client.print("<html>\r\n");
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client.print("<h1>Hello World!</h1>\r\n");
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client.print("Requests received: ");
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client.print(++reqCount);
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client.print("<br>\r\n");
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client.print("Analog input A0: ");
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client.print(analogRead(0));
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client.print("<br>\r\n");
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client.print("</html>\r\n");
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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(10);
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// close the connection:
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client.stop();
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Serial.println("Client disconnected");
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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 where to go in the browser
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Serial.println();
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Serial.print("To see this page in action, open a browser to http://");
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Serial.println(ip);
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Serial.println();
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}
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