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esp8266 D1-mini wemos

PostPosted: Tue Jun 08, 2021 9:49 am
by Richard63
Hello, i am new to esp programming. did a bit on arduino but mostly python and delphi.

I am strugling to get a webserver running on a D1 mini board (berrybase/wemos)

The webserver test program works without errors and the flash program i wrote to flash 2 led's after eachother works also fine. but i cant manage to work it in the server program

button1 Headlights on/off
button2 turning signal left on/off
button3 turning signal right on/off
button4 brake lights on/off
for later (button 5 siren on/off)
button6 flashing lights on/off (blinking led left 3 times and then led right 3 times etc.......)

the last part is what i need help with. Can somebody give me a push in the right direction ?

here is the code i got so far
Code: Select all// Load Wi-Fi library
#include <ESP8266WiFi.h>

// Replace with your network credentials
const char* ssid     = "XXxxxxxxxxxxxXXXX";
const char* password = "xXxXxXXXxxxxxx";

// 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 output5State = "off";
String output4State = "off";

// Assign output variables to GPIO pins
const int output5 = LED_BUILTIN;
const int output4 = 4;

// Current time
unsigned long currentTime = millis();
// Previous time
unsigned long previousTime = 0;
// Define timeout time in milliseconds (example: 2000ms = 2s)
const long timeoutTime = 2000;

void setup() {

    // initialize digital pin LED_BUILTIN as an output.
  pinMode(BUILTIN_LED, OUTPUT); // D5

  pinMode(15, OUTPUT); // D8

  // Initialize the output variables as outputs
  pinMode(D1, OUTPUT);
  // Set outputs to LOW
  digitalWrite(D1, LOW);
  // Connect to Wi-Fi network with SSID and password
  Serial.print("Connecting to ");
  WiFi.begin(ssid, password);
  while (WiFi.status() != WL_CONNECTED) {
  // Print local IP address and start web server
  Serial.println("WiFi connected.");
  Serial.println("IP address: ");

void loop() {
  WiFiClient client = server.available();   // Listen for incoming clients

              // wait for a second
  digitalWrite(BUILTIN_LED, HIGH);    // D1 Mini: turns the LED *on*
  delay(50);                         // wait
  digitalWrite(BUILTIN_LED, LOW);   // D1 Mini: turns the LED *off*
  digitalWrite(BUILTIN_LED, HIGH);    // D1 Mini: turns the LED *on*
  delay(50);                         // wait
  digitalWrite(BUILTIN_LED, LOW);   // D1 Mini: turns the LED *off*
  digitalWrite(BUILTIN_LED, HIGH);    // D1 Mini: turns the LED *on*
  delay(50);    // wait
  digitalWrite(BUILTIN_LED, LOW);   // D1 Mini: turns the LED *off*

  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
    currentTime = millis();
    previousTime = currentTime;
    while (client.connected() && currentTime - previousTime <= timeoutTime) { // loop while the client's connected
      currentTime = millis();
      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("Connection: close");

            // turns the GPIOs on and off
            if (header.indexOf("GET /5/on") >= 0) {
              Serial.println("GPIO 5 on");// the loop function runs over and over again forever
            } else if (header.indexOf("GET /5/off") >= 0) {
              Serial.println("GPIO 5 off");
              output5State = "off";
              digitalWrite(output5, LOW);
            } else if (header.indexOf("GET /4/on") >= 0) {
              Serial.println("GPIO 4 on");
              output4State = "on";
              digitalWrite(output4, HIGH);
            } else if (header.indexOf("GET /4/off") >= 0) {
              Serial.println("GPIO 4 off");
              output4State = "off";
              digitalWrite(output4, 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: #195B6A; border: none; color: white; padding: 16px 40px;");
            client.println("text-decoration: none; font-size: 30px; margin: 2px; cursor: pointer;}");
            client.println(".button2 {background-color: #77878A;}</style></head>");

            // Web Page Heading
            client.println("<body><h1>Brandweerwagen Web Server</h1>");

            // Display current state, and ON/OFF buttons for D1
            client.println("<p>Zwaailicht " + output5State + "</p>");
            // If the output5State is off, it displays the ON button
            if (output5State == "off") {
              client.println("<p><a href=\"/5/on\"><button class=\"button\">ON</button></a></p>");
            } else {
              client.println("<p><a href=\"/5/off\"><button class=\"button button2\">OFF</button></a></p>");

            // Display current state, and ON/OFF buttons for D5
            client.println("<p>GPIO 4 - State " + output4State + "</p>");
            // If the output4State is off, it displays the ON button
            if (output4State == "off") {
              client.println("<p><a href=\"/4/on\"><button class=\"button\">ON</button></a></p>");
            } else {
              client.println("<p><a href=\"/4/off\"><button class=\"button button2\">OFF</button></a></p>");

            // The HTTP response ends with another blank line
            // Break out of the while loop
          } 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
    Serial.println("Client disconnected.");

Re: esp8266 D1-mini wemos

PostPosted: Sun Jun 13, 2021 11:15 pm
by katesimon123
First try the server program example, test it out and then add these LEDs in it. I did a similar project using Arduino Mega 2560, but it didn't worked out as planned.

Re: esp8266 D1-mini wemos

PostPosted: Sun Jun 20, 2021 1:45 am
by Richard63
My question was, were to put the led code, But with some help from another i get it up and running.

FIY the server code was already working.

i wil put code here if you like (not yet completed all functions)