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/********* | |
Rui Santos | |
Complete project details at https://randomnerdtutorials.com | |
*********/ | |
// Load Wi-Fi library | |
#include <ESP8266WiFi.h> | |
// Replace with your network credentials | |
const char* ssid = "ESP32-Access-Point"; | |
const char* password = "123456789"; | |
// Set web server port number to 80 | |
WiFiServer server(80); | |
// Variable to store the HTTP request | |
String header; | |
// Auxiliar variables to store the current output state | |
String output26State = "off"; | |
String output27State = "off"; | |
// Assign output variables to GPIO pins | |
const int output26 = 26; | |
const int output27 = 27; | |
void setup() { | |
Serial.begin(115200); | |
// Initialize the output variables as outputs | |
pinMode(output26, OUTPUT); | |
pinMode(output27, OUTPUT); | |
// Set outputs to LOW | |
digitalWrite(output26, LOW); | |
digitalWrite(output27, LOW); | |
// Connect to Wi-Fi network with SSID and password | |
Serial.print("Setting AP (Access Point)…"); | |
// Remove the password parameter, if you want the AP (Access Point) to be open | |
WiFi.softAP(ssid, password); | |
IPAddress IP = WiFi.softAPIP(); | |
Serial.print("AP IP address: "); | |
Serial.println(IP); | |
server.begin(); | |
} | |
void loop(){ | |
WiFiClient client = server.available(); // Listen for incoming clients | |
if (client) { // If a new client connects, | |
Serial.println("New Client."); // print a message out in the serial port | |
String currentLine = ""; // make a String to hold incoming data from the client | |
while (client.connected()) { // loop while the client's connected | |
if (client.available()) { // if there's bytes to read from the client, | |
char c = client.read(); // read a byte, then | |
Serial.write(c); // print it out the serial monitor | |
header += c; | |
if (c == '\n') { // if the byte is a newline character | |
// if the current line is blank, you got two newline characters in a row. | |
// that's the end of the client HTTP request, so send a response: | |
if (currentLine.length() == 0) { | |
// HTTP headers always start with a response code (e.g. HTTP/1.1 200 OK) | |
// and a content-type so the client knows what's coming, then a blank line: | |
client.println("HTTP/1.1 200 OK"); | |
client.println("Content-type:text/html"); | |
client.println("Connection: close"); | |
client.println(); | |
// turns the GPIOs on and off | |
if (header.indexOf("GET /26/on") >= 0) { | |
Serial.println("GPIO 26 on"); | |
output26State = "on"; | |
digitalWrite(output26, HIGH); | |
} else if (header.indexOf("GET /26/off") >= 0) { | |
Serial.println("GPIO 26 off"); | |
output26State = "off"; | |
digitalWrite(output26, LOW); | |
} else if (header.indexOf("GET /27/on") >= 0) { | |
Serial.println("GPIO 27 on"); | |
output27State = "on"; | |
digitalWrite(output27, HIGH); | |
} else if (header.indexOf("GET /27/off") >= 0) { | |
Serial.println("GPIO 27 off"); | |
output27State = "off"; | |
digitalWrite(output27, LOW); | |
} | |
// Display the HTML web page | |
client.println("<!DOCTYPE html><html>"); | |
client.println("<head><meta name=\"viewport\" content=\"width=device-width, initial-scale=1\">"); | |
client.println("<link rel=\"icon\" href=\"data:,\">"); | |
// CSS to style the on/off buttons | |
// Feel free to change the background-color and font-size attributes to fit your preferences | |
client.println("<style>html { font-family: Helvetica; display: inline-block; margin: 0px auto; text-align: center;}"); | |
client.println(".button { background-color: #4CAF50; border: none; color: white; padding: 16px 40px;"); | |
client.println("text-decoration: none; font-size: 30px; margin: 2px; cursor: pointer;}"); | |
client.println(".button2 {background-color: #555555;}</style></head>"); | |
// Web Page Heading | |
client.println("<body><h1>ESP32 Web Server</h1>"); | |
// Display current state, and ON/OFF buttons for GPIO 26 | |
client.println("<p>GPIO 26 - State " + output26State + "</p>"); | |
// If the output26State is off, it displays the ON button | |
if (output26State=="off") { | |
client.println("<p><a href=\"/26/on\"><button class=\"button\">ON</button></a></p>"); | |
} else { | |
client.println("<p><a href=\"/26/off\"><button class=\"button button2\">OFF</button></a></p>"); | |
} | |
// Display current state, and ON/OFF buttons for GPIO 27 | |
client.println("<p>GPIO 27 - State " + output27State + "</p>"); | |
// If the output27State is off, it displays the ON button | |
if (output27State=="off") { | |
client.println("<p><a href=\"/27/on\"><button class=\"button\">ON</button></a></p>"); | |
} else { | |
client.println("<p><a href=\"/27/off\"><button class=\"button button2\">OFF</button></a></p>"); | |
} | |
client.println("</body></html>"); | |
// The HTTP response ends with another blank line | |
client.println(); | |
// Break out of the while loop | |
break; | |
} else { // if you got a newline, then clear currentLine | |
currentLine = ""; | |
} | |
} else if (c != '\r') { // if you got anything else but a carriage return character, | |
currentLine += c; // add it to the end of the currentLine | |
} | |
} | |
} | |
// Clear the header variable | |
header = ""; | |
// Close the connection | |
client.stop(); | |
Serial.println("Client disconnected."); | |
Serial.println(""); | |
} | |
} |
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