Quiero sincronizar dos pulsadores físicos con 2 de Blynk

#define BLYNK_PRINT Serial
 
#include <ESP8266WiFi.h>

#include <BlynkSimpleEsp8266.h>


// You should get Auth Token in the Blynk App.

// Go to the Project Settings (nut icon).

char auth[] = "xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx";
 
// Your WiFi credentials.
// Set password to "" for open networks.
BlynkTimer timer;
char ssid[] = "xxxxxxxxxxxxxxxx";
char pass[] = "xxxxxxxxx";

int pul1 = D6; //derecha
int pul2 = D7;
int pul3 = D4; //izquierdita
int pul4 = D5;
int LeftPin = D8; //motor
int RightPin = D9; //motor
int a;
int b;
int MOTOR;
int c;
int d;
int sw1;
int sw2;
int PULS1;
int PULS2;

void setup() {
//pinMode(pul1, INPUT); 
pinMode(pul2, INPUT);
//pinMode(pul3, INPUT); 
pinMode(pul4, INPUT);
pinMode(LeftPin, OUTPUT);
pinMode(RightPin, OUTPUT);

Blynk.begin(auth, ssid, pass);
timer.setInterval(20L, motorDC);
Serial.begin(9600);
MOTOR=0;
sw1=0;
sw2=0;
a=1;
c=1;
}

void loop()
{
  Blynk.run();
  timer.run();
}

BLYNK_WRITE(V7) 
{
motorDC();
a = param.asInt();
motorDC();
}


BLYNK_WRITE(V8) 
{
motorDC();
c = param.asInt();
motorDC();
}

void motorDC() {
PULS1 = digitalRead(pul1); 
b = digitalRead(pul2);

if(a == LOW && sw1 == 0) 
  { 
    //digitalWrite(b, LOW);
    sw1=1;
    if(MOTOR == 0 && b==HIGH)
    {
      digitalWrite(LeftPin, LOW);
      digitalWrite(RightPin, HIGH); 
      MOTOR=1;
      Serial.println("on");
    }
    else
    {
      digitalWrite(RightPin, LOW);
      digitalWrite(LeftPin, LOW);
      MOTOR=0;
    }
  }
else if(a == HIGH && sw1 == 1)
{
  sw1 = 0;
}

if(MOTOR == 1 && b==LOW)
{
  digitalWrite(RightPin, LOW);
  MOTOR=0;
}

PULS2 = digitalRead(pul3); 
d = digitalRead(pul4);

if(c == LOW && sw2 == 0) 
  { 
    sw2=1;
    if(MOTOR == 0 && d==HIGH)
    {
      digitalWrite(LeftPin, HIGH);
      digitalWrite(RightPin, LOW); 
      MOTOR=1;
      Serial.println("on");
    }
    else
    {
      digitalWrite(RightPin, LOW);
      digitalWrite(LeftPin, LOW);
      MOTOR=0;
    }
  }
else if(c == HIGH && sw2 == 1)
{
  sw2 = 0;
}

if(MOTOR == 1 && d==LOW)
{
  digitalWrite(LeftPin, LOW);
  MOTOR=0;
}

}

Quiero poder sincronizar los pulsadores PULS1 con V7 de Blynk, y PULS2 con V8 de Blynk.
Estuve viendo el ejemplo de sync physical button pero no logro entenderlo.

That is an issue… if you want to do it, it helps to understand it. The example should have enough commentary to assist.

Basically you have a function that does a thing, controlled by a Button Widget.

Then you have a timer or interrupt that monitors a physical GPIO (button) preferably with some form of debouncing, that senses the state change and updates the widget (button) via Blynk.virtualWrite(vPin, state), then follows up with a Blynk.syncVirtual(vPin) that causes the aforementioned function to be called and do a thing.