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dmpop/ledctrl.ino

Created March 15, 2018 15:23
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Control LED with NodeMCU in the AP mode
Raw
ledctrl.ino
/*
* Sketch: ESP8266_LED_Control_02
* Control an LED from a web browser
* Intended to be run on an ESP8266
*
* connect to the ESP8266 AP then
* use web broswer to go to 192.168.4.1
*
*/
#include <ESP8266WiFi.h>
const char WiFiPassword[] = "12345678";
const char AP_NameChar[] = "LEDControl" ;
WiFiServer server(80);
String header = "HTTP/1.1 200 OK\r\nContent-Type: text/html\r\n\r\n";
String html_1 = "<!DOCTYPE html><html><head><title>LED Control</title></head><body><div id='main'><h2>LED Control</h2>";
String html_2 = "<form id='F1' action='LEDON'><input class='button' type='submit' value='LED ON' ></form><br>";
String html_3 = "<form id='F2' action='LEDOFF'><input class='button' type='submit' value='LED OFF' ></form><br>";
String html_4 = "</div></body></html>";
String request = "";
int LED_Pin = D1;
void setup()
{
pinMode(LED_Pin, OUTPUT);
boolean conn = WiFi.softAP(AP_NameChar, WiFiPassword);
server.begin();
} // void setup()
void loop()
{
// Check if a client has connected
WiFiClient client = server.available();
if (!client) { return; }
// Read the first line of the request
request = client.readStringUntil('\r');
if ( request.indexOf("LEDON") > 0 ) { digitalWrite(LED_Pin, HIGH); }
else if ( request.indexOf("LEDOFF") > 0 ) { digitalWrite(LED_Pin, LOW); }
client.flush();
client.print( header );
client.print( html_1 );
client.print( html_2 );
client.print( html_3 );
client.print( html_4);
delay(5);
// The client will actually be disconnected when the function returns and 'client' object is detroyed
} // void loop()
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