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Delay function not working

esp8266
#1

Hello i have been trying to blink a led using esp 8266 (for a pattern) . I know how to do it using delay but i want to do it using time.settimeout function . now below is the code i did but it didnt work for me .


#include <DNSServer.h>
#include <ESP8266WebServer.h>
#include <WiFiManager.h>

#include <ESP8266WiFi.h>
#include <BlynkSimpleEsp8266.h>

char auth[] = "auth_token"; // enter the new code

char ssid[] = "Freedom";
char pass[] = "pajik@1234";

const int ledPin =  5 ;//D1 pin pwm pin.
int x = 0 ; // virtual pin 2


BlynkTimer timer ; // creates a time object called timer

int ledState = LOW; // initally making the ledstate zero.

BLYNK_CONNECTED() {
  
  Blynk.syncVirtual(V2);

}

BLYNK_WRITE(V2) {
  ledState = param.asInt();

  if (ledState == 1 ) {
    while (x > 15) {
      ledState = ! ledState ;
      digitalWrite (ledPin, ledState);
      timer.setTimeout(5000L, actionoff);
    }
    x = 0 ;
    ledState = 0 ;
    Blynk.virtualWrite (V2, ledState); // updating the button widget in the app
    digitalWrite(ledPin, ledState); // switches off the led
  }

}

void actionoff() {
  x = x + 1 ;
}

void setup() {

  Serial.begin(9600);

  WiFiManager wifiManager;
  wifiManager.autoConnect("auto_connect_ap");
  Serial.println("connected :)");

  Blynk.begin(auth, ssid, pass, IPAddress(xx, xxx, xx,xx), 8080);

  pinMode (ledPin , OUTPUT);


  digitalWrite (ledPin, LOW );



}

void loop() {

  Blynk.run();
  timer.run();
}```
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#2

this is my normal code which i used to blink the led using the delay function.

 ledState = param.asInt();

 while (x < 15) {
   ledState = !  ledState ;
   digitalWrite (ledPin, ledState);
   x = x + 1;
   delay(100);
 }
 x = 0 ;
 ledState = 0 ;
 Blynk.virtualWrite (V2, ledState); // updating the button widget in the app
 digitalWrite(ledPin, ledState); // switches off the led
}```
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#3

Firstly… you are requested (in the Welcome Topic) to properly format all posted code like this…

Blynk%20-%20FTFC

As for one way to blink without delay, try this… Add your digital pin write as needed.

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#4

Thanks for letting me know about making the code adjustments , i will read the link which you mentioned above.

thanks.

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#5

@Gunner i would really like to thank you , since every post that i have posted in this forum , you have taken your time to reply to those posts. people like you make this world a better place.

thanks,
Aaron from Sri-Lanka.

1 Like

#6

guys this article was so helpful as well have a good explanation of not using delay function.

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