StopMotor after delay

Projects General Guidance
1

Hello everyone, I'm new on this forum, I need your help.
I try different ways to stop 2 motors after 500 ms :
I've tried delay(); millis() and timer().
I'm using Proteus for simulate the code on a ATTiny85, I've attached a photo of the montage.

There is my code :

// ************************************************************
// ATtiny_attachInterrupt.ino
// ************************************************************
// Ce programme est inspire de l exemple donne en page reference
// pour attachInterrupt() en mettant 0 (INT0) a la place de
// digitalPinToInterrupt(pin) qui n est pas accepte pour ATtiny

const byte MotorPin = 0;
const byte Motor2Pin = 1;
const byte interruptPin = 2;
int laststate = 0;

void setup() {
pinMode(MotorPin, OUTPUT);
pinMode(Motor2Pin, OUTPUT);
pinMode(interruptPin, INPUT_PULLUP);
attachInterrupt(0, blink, FALLING);
}

void loop() {
long int duree=millis();
if (laststate%2==0){
if (millis()-duree<=500){
digitalWrite(MotorPin, 100); //moteur 1 en marche
digitalWrite(Motor2Pin, 0);//moteur 2 à l'arrêt
}
else{
digitalWrite(MotorPin, 0);
digitalWrite(Motor2Pin, 0);
}
}

if (laststate%2!=0){
digitalWrite(MotorPin, 0);
digitalWrite(Motor2Pin, 100);
}
}

void blink() {
laststate=laststate+1;
}

I'm using millis() but it doesn't work.
Please, light on my lantern !

montage.PNG
montage.PNG912×614 4.47 KB

montage.PNG
montage.PNG912×614 4.47 KB

2

This is not going to work

void loop() {
 long int duree=millis();
 if (laststate%2==0){
   if (millis()-duree<=500){

because you update the value of duree every time through loop() so millis() is never 500 greater than duree.

You should only set the value of duree at the moment when the motor is switched on.

And your test should be

   if (millis() - duree >= 500){

...R

PS ... when posting code please always use the code button </>