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Nathanial Hendler
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a2idiot.ino
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203
a2idiot.ino
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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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// Load Wi-Fi library
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#include <WiFi.h>
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// Replace with your network credentials
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const char* ssid = "GSO";
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const char* password = "xerxes27";
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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 http_header;
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/* OUTPUTS (numbers mean GPIO port) */
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#define DATA_0_PIN 9
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#define DATA_1_PIN 10
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#define DATA_2_PIN 5
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#define DATA_3_PIN 5
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#define DATA_4_PIN 5
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#define DATA_5_PIN 5
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#define DATA_6_PIN 5
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#define DATA_7_PIN 5
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#define DEVSEL_PIN 5
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// Auxiliar variables to store the current output state
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String output26State = "off";
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String output27State = "off";
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// Assign output variables to GPIO pins
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const int output26 = 26;
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const int output27 = 27;
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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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//Serial.begin(9600);
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// Initialize the output variables as outputs
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//pinMode(output26, OUTPUT);
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//pinMode(output27, OUTPUT);
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// Set outputs to LOW
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//digitalWrite(output26, LOW);
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//digitalWrite(output27, LOW);
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pinMode(DATA_0_PIN, INPUT);
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pinMode(DATA_1_PIN, INPUT);
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pinMode(DATA_2_PIN, INPUT);
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pinMode(DATA_3_PIN, INPUT);
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pinMode(DATA_4_PIN, INPUT);
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pinMode(DATA_5_PIN, INPUT);
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pinMode(DATA_6_PIN, INPUT);
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pinMode(DATA_7_PIN, INPUT);
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pinMode(DEVSEL_PIN, INPUT);
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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 http_check() {
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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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http_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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// turns the GPIOs on and off
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if (http_header.indexOf("GET /26/on") >= 0) {
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//Serial.println("GPIO 26 on");
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output26State = "on";
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digitalWrite(output26, HIGH);
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} else if (http_header.indexOf("GET /26/off") >= 0) {
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//Serial.println("GPIO 26 off");
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output26State = "off";
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digitalWrite(output26, LOW);
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} else if (http_header.indexOf("GET /27/on") >= 0) {
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//Serial.println("GPIO 27 on");
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output27State = "on";
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digitalWrite(output27, HIGH);
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} else if (http_header.indexOf("GET /27/off") >= 0) {
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//Serial.println("GPIO 27 off");
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output27State = "off";
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digitalWrite(output27, LOW);
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}
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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>html { font-family: Helvetica; display: inline-block; margin: 0px auto; text-align: center;}");
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client.println(".button { background-color: #4CAF50; border: none; color: white; padding: 16px 40px;");
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client.println("text-decoration: none; font-size: 30px; margin: 2px; cursor: pointer;}");
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client.println(".button2 {background-color: #555555;}</style></head>");
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// Web Page Heading
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client.println("<body><h1>ESP32 Web Server</h1>");
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// Display current state, and ON/OFF buttons for GPIO 26
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client.println("<p>GPIO 26 - State " + output26State + "</p>");
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// If the output26State is off, it displays the ON button
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if (output26State=="off") {
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client.println("<p><a href=\"/26/on\"><button class=\"button\">ON</button></a></p>");
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} else {
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client.println("<p><a href=\"/26/off\"><button class=\"button button2\">OFF</button></a></p>");
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}
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// Display current state, and ON/OFF buttons for GPIO 27
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client.println("<p>GPIO 27 - State " + output27State + "</p>");
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// If the output27State is off, it displays the ON button
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if (output27State=="off") {
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client.println("<p><a href=\"/27/on\"><button class=\"button\">ON</button></a></p>");
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} else {
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client.println("<p><a href=\"/27/off\"><button class=\"button button2\">OFF</button></a></p>");
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}
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client.println("</body></html>");
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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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http_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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unsigned char copy_DATA_pins_to_register(void) {
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unsigned char retval = 0;
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retval |= digitalRead(DATA_0_PIN);
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retval = retval << 1;
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retval |= digitalRead(DATA_1_PIN);
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retval = retval << 1;
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retval |= digitalRead(DATA_2_PIN);
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retval = retval << 1;
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retval |= digitalRead(DATA_3_PIN);
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retval = retval << 1;
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retval |= digitalRead(DATA_4_PIN);
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retval = retval << 1;
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retval |= digitalRead(DATA_5_PIN);
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retval = retval << 1;
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retval |= digitalRead(DATA_6_PIN);
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retval = retval << 1;
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retval |= digitalRead(DATA_7_PIN);
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return retval;
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}
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void loop() {
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//http_check()
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if (digitalRead(DEVSEL_PIN) == LOW) {
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data_register = copy_DATA_pins_to_register()
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//Serial.println(copy_DATA_pins_to_register());
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}
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}
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