i am using NODEMCU ( Ver 0.9, model ESP8266MOD ) in WIFI Soft Access Point to control my lights using relays. when it is connected it takes time to open the given IP address to control the lights and sometimes it don't connect and if connected the IP web page don't open from where we can control the lights.. any help please ??
we can't guess what's wrong with it unless you post your code ( in code tags please)
#include <ESP8266WiFi.h>
// Replace with your network credentials
// to create its own wifi network
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 output1State = "off";
String output2State = "off";
String output3State = "off";
String output4State = "off";
// Assign output variables to GPIO pins
const int output1 = D0;
const int output2 = D1;
const int output3 = D2;
const int output4 = D3;
void setup() {
Serial.begin(115200);
// Initialize the output variables as outputs
pinMode(output1, OUTPUT);
pinMode(output2, OUTPUT);
pinMode(output3, OUTPUT);
pinMode(output4, OUTPUT);
// Set outputs to high because we are using active low type relay module
digitalWrite(output1, HIGH);
digitalWrite(output2, HIGH);
digitalWrite(output3, HIGH);
digitalWrite(output4, HIGH);
// 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
//foe GPIO1
if (header.indexOf("GET /1/on") >= 0)
{
Serial.println("GPIO 1 on");
output1State = "on";
digitalWrite(output1, LOW);
}
else if (header.indexOf("GET /1/off") >= 0)
{
Serial.println("GPIO 1 off");
output1State = "off";
digitalWrite(output1, HIGH);
}
//for GPIO2
else if (header.indexOf("GET /2/on") >= 0)
{
Serial.println("GPIO 2 on");
output2State = "on";
digitalWrite(output2, LOW);
}
else if (header.indexOf("GET /2/off") >= 0)
{
Serial.println("GPIO 2 off");
output2State = "off";
digitalWrite(output2, HIGH);
}
//for GPIO3
else if (header.indexOf("GET /3/on") >= 0)
{
Serial.println("GPIO 3 on");
output3State = "on";
digitalWrite(output3, LOW);
}
else if (header.indexOf("GET /3/off") >= 0)
{
Serial.println("GPIO 3 off");
output3State = "off";
digitalWrite(output3, HIGH);
}
//for GPIO4
else if (header.indexOf("GET /4/on") >= 0)
{
Serial.println("GPIO 4 on");
output4State = "on";
digitalWrite(output4, LOW);
}
else if (header.indexOf("GET /4/off") >= 0)
{
Serial.println("GPIO 4 off");
output4State = "off";
digitalWrite(output4, HIGH);
}
// Display the HTML web page
client.println("");
client.println("<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("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;}");
// Web Page Heading
client.println("
ESP32 Web Server
");// Display current state, and ON/OFF buttons for GPIO 1
client.println("
GPIO 1 - State " + output1State + "
");// If the output1State is off, it displays the ON button
if (output1State=="off") {
client.println("
<a href="/1/on"><button class="button">ON
");} else {
client.println("
<a href="/1/off"><button class="button button2">OFF
");}
// Display current state, and ON/OFF buttons for GPIO 2
client.println("
GPIO 2 - State " + output2State + "
");// If the output2State is off, it displays the ON button
if (output2State=="off") {
client.println("
<a href="/2/on"><button class="button">ON
");} else {
client.println("
<a href="/2/off"><button class="button button2">OFF
");}
// Display current state, and ON/OFF buttons for GPIO 3
client.println("
GPIO 3 - State " + output3State + "
");// If the output3State is off, it displays the ON button
if (output3State=="off") {
client.println("
<a href="/3/on"><button class="button">ON
");} else {
client.println("
<a href="/3/off"><button class="button button2">OFF
");}
// Display current state, and ON/OFF buttons for GPIO 4
client.println("
GPIO 4 - State " + output4State + "
");// If the output4State is off, it displays the ON button
if (output4State=="off") {
client.println("
<a href="/4/on"><button class="button">ON
");} else {
client.println("
<a href="/4/off"><button class="button button2">OFF
");}
client.println("");
// 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("");
}
}
To put your code in a code box, use the </> icon in the far left of the post tool bar and paste your code between the two bracket sets that appear.
To go back and put your code in a code box, in the bottom right of your post, select "more" and click modify. When the modify post opens, high light your code and click the </> in the far left of the post tool bar. This will put you code in code brackets. Then save the changes.
ghayour:
i am using NODEMCU ( Ver 0.9, model ESP8266MOD ) in WIFI Soft Access Point to control my lights using relays. when it is connected it takes time to open the given IP address to control the lights and sometimes it don't connect and if connected the IP web page don't open from where we can control the lights.. any help please ??
I loaded the code, modified for my system, and it operates as a web server on a wireless router network, not as an access point. The served web page loads immediately. On my WeMOS board, D0 and D1 are the rx/tx pins, so those probably won't work. Pins D2 and D3 are turned on/off appropriately by the buttons. You would use a different code to use as an access point with the web server.