- Thu Oct 27, 2016 10:41 pm
#57257
I'm following the example web server code for the ESP8266. All it does is connect to a network, starts up a web server to take in some GET requests and responds to front end some how, and triggers some GPIOs. However, it both connects to a wifi network while also creating it's own open network. How do I prevent the creation of its own network? it's listed as `ESP_<identifier>` when I scan for networks. Here's my code:
The code is pretty straight forward, I don't see anywhere where it explicitly creates the access point. I am using the nodeMCU (ESP-12E) development board.
Maybe I'm just using the wrong classes, if anyone has a better example to follow, would appreciate it.
Code: Select all
/*
* This sketch demonstrates how to set up a simple HTTP-like server.
* The server will set a GPIO pin depending on the request
* http://server_ip/gpio/0 will set the GPIO2 low,
* http://server_ip/gpio/1 will set the GPIO2 high
* server_ip is the IP address of the ESP8266 module, will be
* printed to Serial when the module is connected.
*/
#include <ESP8266WiFi.h>
const char* ssid = "SSID";
const char* password = "PASSWORD";
// Create an instance of the server
// specify the port to listen on as an argument
WiFiServer server(80);
void setup() {
Serial.begin(115200);
delay(10);
// prepare GPIO2
pinMode(2, OUTPUT);
digitalWrite(2, 0);
pinMode(0, OUTPUT);
digitalWrite(0, 0);
// Connect to WiFi network
Serial.println();
Serial.println();
Serial.print("Connecting to ");
Serial.println(ssid);
WiFi.begin(ssid, password);
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.println(WiFi.localIP());
}
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 req = client.readStringUntil('\r');
Serial.println(req);
client.flush();
Serial.println(req);
Serial.println("indexOf:");
Serial.println(req.indexOf("/"));
if (req.indexOf("/gpio") != -1) {
// Match the request
int val;
if (req.indexOf("/gpio/0") != -1)
val = 0;
else if (req.indexOf("/gpio/1") != -1)
val = 1;
else {
Serial.println("invalid request");
client.stop();
return;
}
// Set GPIO2 according to the request
digitalWrite(0, val);
digitalWrite(2, val);
client.flush();
// Prepare the response
String s = "HTTP/1.1 200 OK\r\nContent-Type: text/html\r\n\r\n<!DOCTYPE HTML>\r\n<html>\r\nGPIO is now ";
s += (val)?"high":"low";
s += "</html>\n";
// Send the response to the client
client.print(s);
delay(1);
Serial.println("Client disonnected");
// The client will actually be disconnected
// when the function returns and 'client' object is detroyed
} else if (req.indexOf("/") == 4) {
client.flush();
String s = "HTTP/1.1 200 OK\r\nContent-Type: text/html\r\n\r\n<!DOCTYPE HTML>\r\n<html>\r\nhi!</html>";
client.print(s);
delay(1);
Serial.println("Client disonnected");
} else {
client.flush();
String s = "HTTP/1.1 200 OK\r\nContent-Type: text/html\r\n\r\n<!DOCTYPE HTML>\r\n<html>\r\nsomething went wrong</html>";
client.print(s);
delay(1);
Serial.println("Client disonnected");
}
}
The code is pretty straight forward, I don't see anywhere where it explicitly creates the access point. I am using the nodeMCU (ESP-12E) development board.
Maybe I'm just using the wrong classes, if anyone has a better example to follow, would appreciate it.
