Multiple ESP8266's on a same network
Posted: Thu Aug 30, 2018 7:34 amHi. As you can see, I'm a newbie.
I want to connect 2 or more EPS8266 devices to a single network and control their pins for a school project.
One device works perfectly. When I add another one, that's when the problem starts. Seems like one ESP disconnects the other.
I have no idea what causes it.
Also, I'd like to keep static IP address.
(I apologize in advance if this question has been asked. I tried, but was unable to find it)
Appreciate all the help I can get.
This is the code I'm using, it's relatively simple:
I want to connect 2 or more EPS8266 devices to a single network and control their pins for a school project.
One device works perfectly. When I add another one, that's when the problem starts. Seems like one ESP disconnects the other.
I have no idea what causes it.
Also, I'd like to keep static IP address.
(I apologize in advance if this question has been asked. I tried, but was unable to find it)
Appreciate all the help I can get.
This is the code I'm using, it's relatively simple:
Code: Select all
#include <ESP8266WiFi.h>
const char* ssid = "ESP Test";
const char* password = "88888888";
; //
WiFiServer server(80);
void setup() {
Serial.begin(115200);
delay(10);
pinMode(0, OUTPUT);
pinMode(2, OUTPUT);
pinMode(0, OUTPUT);
pinMode(13, OUTPUT);
digitalWrite(0, LOW);
digitalWrite(2, LOW);
digitalWrite(0, LOW);
digitalWrite(13, LOW);
// Connect to WiFi network
Serial.println();
Serial.println();
Serial.print("Connecting to ");
Serial.println(ssid);
WiFi.begin(ssid, password);
IPAddress ip(192,168,5,199); ////////////////////////////////////////////adresa
IPAddress gateway(192,168,5,1); ///////////////////////////////////ruter
IPAddress subnet(255,255,255,0);
WiFi.config(ip, gateway, subnet);
while (WiFi.status() != WL_CONNECTED) {
delay(500);
Serial.print(".");
}
Serial.println("");
Serial.println("WiFi connected");
// Start the server
server.begin();
Serial.println("Server started");
// Print the IP address
Serial.print("Use this URL to connect: ");
Serial.print("http://");
Serial.print(WiFi.localIP());
Serial.println("/");
}
void loop() {
// Check if a client has connected
WiFiClient client = server.available();
if (!client) {
return;
}
// Wait until the client sends some data
Serial.println("new client");
while(!client.available()){
delay(1);
}
// Read the first line of the request
String request = client.readStringUntil('\r');
Serial.println(request);
client.flush();
// Match the request
if (request.indexOf("/light1on") > 0) {
digitalWrite(0, HIGH);
}
if (request.indexOf("/light1off") >0) {
digitalWrite(0, LOW);
}
if (request.indexOf("/light2on") > 0) {
digitalWrite(2, HIGH);
}
if (request.indexOf("/light2off") >0) {
digitalWrite(2, LOW);
}
if (request.indexOf("/light3on") >0) {
digitalWrite(0, HIGH);
}
if (request.indexOf("/light3off") > 0) {
digitalWrite(0, LOW);
}
if (request.indexOf("/light4on") > 0) {
digitalWrite(13, HIGH);
}
if (request.indexOf("/light4off") > 0) {
digitalWrite(13, LOW);
}
// Set ledPin according to the request
//digitalWrite(ledPin, value);
// Return the response
client.println("HTTP/1.1 200 OK");
client.println("Content-Type: text/html");
client.println(""); // do not forget this one
client.println("<!DOCTYPE HTML>");
client.println("<html>");
client.println("<head>");
client.println("<meta name='apple-mobile-web-app-capable' content='yes' />");
client.println("<meta name='apple-mobile-web-app-status-bar-style' content='black-translucent' />");
client.println("</head>");
client.println("<body bgcolor = \"#f7e6ec\">");
client.println("<hr/><hr>");
client.println("<h4><center> Esp8266 Electrical Device Control </center></h4>");
client.println("<hr/><hr>");
client.println("<br><br>");
client.println("<br><br>");
client.println("<center>");
client.println("Device 1");
client.println("<a href=\"/light1on\"\"><button>Turn On </button></a>");
client.println("<a href=\"/light1off\"\"><button>Turn Off </button></a><br />");
client.println("</center>");
client.println("<br><br>");
client.println("<center>");
client.println("Device 2");
client.println("<a href=\"/light2on\"\"><button>Turn On </button></a>");
client.println("<a href=\"/light2off\"\"><button>Turn Off </button></a><br />");
client.println("</center>");
client.println("<br><br>");
client.println("<center>");
client.println("Device 3");
client.println("<a href=\"/light3on\"\"><button>Turn On </button></a>");
client.println("<a href=\"/light3off\"\"><button>Turn Off </button></a><br />");
client.println("</center>");
client.println("<br><br>");
client.println("<center>");
client.println("Device 4");
client.println("<a href=\"/light4on\"\"><button>Turn On </button></a>");
client.println("<a href=\"/light4off\"\"><button>Turn Off </button></a><br />");
client.println("</center>");
client.println("<br><br>");
client.println("<center>");
client.println("<table border=\"5\">");
client.println("<tr>");
if (digitalRead(5))
{
client.print("<td>Light 1 is ON</td>");
}
else
{
client.print("<td>Light 1 is OFF</td>");
}
client.println("<br />");
if (digitalRead(4))
{
client.print("<td>Light 2 is ON</td>");
}
else
{
client.print("<td>Light 2 is OFF</td>");
}
client.println("</tr>");
client.println("<tr>");
if (digitalRead(0))
{
client.print("<td>Light 3 is ON</td>");
}
else
{
client.print("<td>Light 3 is OFF</td>");
}
if (digitalRead(13))
{
client.print("<td>Light 4 is ON</td>");
}
else
{
client.print("<td>Light 4 is OFF</td>");
}
client.println("</tr>");
client.println("</table>");
client.println("</center>");
client.println("</html>");
delay(1);
Serial.println("Client disonnected");
Serial.println("");
}