How can I repeat the activity in case 1 and case 2 which is in BLYNK_WRITE? It only run once

Need Help With My Project
1 

#define BLYNK_PRINT Serial

#include <WiFi.h>
#include <WiFiClient.h>
#include <BlynkSimpleEsp32.h>

char auth[] = "auth";
char ssid[] = "ssid";
char pass[] = "pass";

WidgetLED ledR1(V1),
          ledY1(V2),
          ledG1(V3),
          ledR2(V4),
          ledY2(V5),
          ledG2(V6);

BlynkTimer timer;



const int green1 = 5;
const int yellow1 = 18;
const int red1 = 19;
const int green2 = 21;
const int yellow2 = 22;
const int red2 = 23;
const int sensor = 34;


void setup() {
  // put your setup code here, to run once:
  pinMode(red1, OUTPUT);
  pinMode(red2, OUTPUT);
  pinMode(yellow1, OUTPUT);
  pinMode(yellow2, OUTPUT);
  pinMode(green1, OUTPUT);
  pinMode(green2, OUTPUT);
  pinMode(sensor, INPUT);
  Serial.begin(9600);

  Blynk.begin(auth, ssid, pass);


  timer.setInterval(1000L, blinkLedWidget);
}

void loop () {
  Blynk.run();
  timer.run();
}
BLYNK_WRITE(V0) {
  switch (param.asInt())
  {
    case 1: { // Item 1
        int sensorstate = digitalRead(sensor);
        if (sensorstate == LOW) {
          digitalWrite(red1, HIGH);
          ledR1.on();
          Serial.println("LED on V1: on"); //RED 1
          digitalWrite(green2, HIGH);
          ledG2.on();
          Serial.println("LED on V6: on"); //GREEN 2
          digitalWrite(red2, LOW);
          ledR2.off();
          Serial.println("LED on V4: off"); //RED 2
          digitalWrite(green1, LOW);
          ledG1.off();
          Serial.println("LED on V3: off"); //GREEN 1
          digitalWrite(yellow1, LOW);
          ledY1.off();
          Serial.println("LED on V2: off"); //YELLOW 1
          digitalWrite(yellow2, LOW);
          ledY2.off();
          Serial.println("LED on V5: off"); //YELLOW 2
          delay(1000);
        } else if (sensorstate == HIGH) {
          digitalWrite(red1, LOW);
          ledR1.off();
          Serial.println("LED on V1: off"); //RED 1
          digitalWrite(green2, LOW);
          ledG2.off();
          Serial.println("LED on V6: off"); //GREEN 2
          digitalWrite(red2, HIGH);
          ledR2.on();
          Serial.println("LED on V4: on"); //RED 2
          digitalWrite(green1, HIGH);
          ledG1.on();
          Serial.println("LED on V3: on"); //GREEN 1
          digitalWrite(yellow1, LOW);
          ledY1.off();
          Serial.println("LED on V2: off"); //YELLOW 1
          digitalWrite(yellow2, LOW);
          ledY2.off();
          Serial.println("LED on V5: off"); //YELLOW 2
          delay(1000);
          break;
        }
      }
    case 2: { // Item 2
        digitalWrite(red1, LOW);
        ledR1.off();
        Serial.println("LED on V1: off"); //RED 1
        digitalWrite(green2, LOW);
        ledG2.off();
        Serial.println("LED on V6: off"); //GREEN 2
        digitalWrite(red2, LOW);
        ledR2.off();
        Serial.println("LED on V4: off"); //RED 2
        digitalWrite(green1, LOW);
        ledG1.off();
        Serial.println("LED on V3: off"); //GREEN 1
        digitalWrite(yellow1, HIGH);
        digitalWrite(yellow2, HIGH);
        ledY1.on(),
                 ledY2.on();
        Serial.println("LED on V2: on"),
                       ("LED on V5: on");
        delay(500);
        digitalWrite(yellow1, LOW);
        digitalWrite(yellow2, LOW);
        ledY1.off(),
                  ledY2.off();
        Serial.println("LED on V2: off"),
                       ("LED on V5: off");
        delay(500);
        break;
      }
  }
}
void blinkLedWidget()
{
}
2 
BLYNK_WRITE(V0)

return 0 or 1, not 1 and 2 :stuck_out_tongue_winking_eye:

So , replace by case 0 and case 1.
but you 'll have disconnection with delay(1000) :thinking:

3

If you want something to repeat then you should define a Blynk timer that runs at the desired interval.
The timer will call a function, but that can’t be a BLYNK_WRITE function, so you’ll need to move some of that code out of your BLYNK_WRITE into your timed function.

If you only want actions to repeat in certain situations then add an if statement into your timed function, which only performs the actions if a flag variable is true.

Pete

4

I got it. Thanks :smiley: