136 lines
5.6 KiB
Arduino
136 lines
5.6 KiB
Arduino
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/*********
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Rui Santos
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Complete project details at http://randomnerdtutorials.com
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*********/
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#include <WiFi.h>
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#include <Servo.h>
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Servo myservo; // create servo object to control a servo
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// twelve servo objects can be created on most boards
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// GPIO the servo is attached to
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static const int servoPin = 13;
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// Replace with your network credentials
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const char* ssid = "JoeNelsDarlings";
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const char* password = "Paris2016";
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// Set web server port number to 80
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WiFiServer server(80);
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// Variable to store the HTTP request
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String header;
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// Decode HTTP GET value
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String valueString = String(5);
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int pos1 = 0;
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int pos2 = 0;
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// Current time
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unsigned long currentTime = millis();
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// Previous time
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unsigned long previousTime = 0;
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// Define timeout time in milliseconds (example: 2000ms = 2s)
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const long timeoutTime = 2000;
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void setup() {
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Serial.begin(115200);
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myservo.attach(servoPin); // attaches the servo on the servoPin to the servo object
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// Connect to Wi-Fi network with SSID and password
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Serial.print("Connecting to ");
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Serial.println(ssid);
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WiFi.begin(ssid, password);
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while (WiFi.status() != WL_CONNECTED) {
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delay(500);
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Serial.print(".");
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}
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// Print local IP address and start web server
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Serial.println("");
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Serial.println("WiFi connected.");
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Serial.println("IP address: ");
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Serial.println(WiFi.localIP());
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server.begin();
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}
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void loop(){
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WiFiClient client = server.available(); // Listen for incoming clients
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if (client) { // If a new client connects,
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currentTime = millis();
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previousTime = currentTime;
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Serial.println("New Client."); // print a message out in the serial port
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String currentLine = ""; // make a String to hold incoming data from the client
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while (client.connected() && currentTime - previousTime <= timeoutTime) { // loop while the client's connected
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currentTime = millis();
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if (client.available()) { // if there's bytes to read from the client,
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char c = client.read(); // read a byte, then
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Serial.write(c); // print it out the serial monitor
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header += c;
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if (c == '\n') { // if the byte is a newline character
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// if the current line is blank, you got two newline characters in a row.
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// that's the end of the client HTTP request, so send a response:
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if (currentLine.length() == 0) {
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// HTTP headers always start with a response code (e.g. HTTP/1.1 200 OK)
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// and a content-type so the client knows what's coming, then a blank line:
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client.println("HTTP/1.1 200 OK");
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client.println("Content-type:text/html");
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client.println("Connection: close");
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client.println();
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// Display the HTML web page
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client.println("<!DOCTYPE html><html>");
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client.println("<head><meta name=\"viewport\" content=\"width=device-width, initial-scale=1\">");
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client.println("<link rel=\"icon\" href=\"data:,\">");
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// CSS to style the on/off buttons
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// Feel free to change the background-color and font-size attributes to fit your preferences
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client.println("<style>body { text-align: center; font-family: \"Trebuchet MS\", Arial; margin-left:auto; margin-right:auto;}");
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client.println(".slider { width: 300px; }</style>");
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client.println("<script src=\"https://ajax.googleapis.com/ajax/libs/jquery/3.3.1/jquery.min.js\"></script>");
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// Web Page
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client.println("</head><body><h1>ESP32 with Servo</h1>");
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client.println("<p>Position: <span id=\"servoPos\"></span></p>");
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client.println("<input type=\"range\" min=\"0\" max=\"180\" class=\"slider\" id=\"servoSlider\" onchange=\"servo(this.value)\" value=\""+valueString+"\"/>");
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client.println("<script>var slider = document.getElementById(\"servoSlider\");");
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client.println("var servoP = document.getElementById(\"servoPos\"); servoP.innerHTML = slider.value;");
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client.println("slider.oninput = function() { slider.value = this.value; servoP.innerHTML = this.value; }");
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client.println("$.ajaxSetup({timeout:1000}); function servo(pos) { ");
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client.println("$.get(\"/?value=\" + pos + \"&\"); {Connection: close};}</script>");
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client.println("</body></html>");
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//GET /?value=180& HTTP/1.1
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if(header.indexOf("GET /?value=")>=0) {
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pos1 = header.indexOf('=');
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pos2 = header.indexOf('&');
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valueString = header.substring(pos1+1, pos2);
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//Rotate the servo
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myservo.write(valueString.toInt());
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Serial.println(valueString);
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}
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// The HTTP response ends with another blank line
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client.println();
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// Break out of the while loop
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break;
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} else { // if you got a newline, then clear currentLine
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currentLine = "";
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}
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} else if (c != '\r') { // if you got anything else but a carriage return character,
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currentLine += c; // add it to the end of the currentLine
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}
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}
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}
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// Clear the header variable
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header = "";
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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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Serial.println("");
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}
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}
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