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1

Hi people! I am testing push buttons to control stepper motor! I use this code below! The motor works with this code. However, when I press the button, I don't manage to make the motor goes through a specific number of steps and stop! Instead of this, the motor stops when I stop to press the button! How do I solve this?

const int stepPin = 7;
const int dirPin = 8;
const int numerodepassos =72;
const int Mode0 = 2;
const int Mode1 = 4;
const int Mode2 = 3;
const int nRESET = 11;
const int button0 = 5;
const int button1= 6;
boolean dir;


void setup() {
 pinMode(stepPin, OUTPUT);
  pinMode(dirPin, OUTPUT);
  pinMode (nRESET, OUTPUT);
  pinMode(Mode0, OUTPUT);
  pinMode(Mode1, OUTPUT);
  pinMode(Mode2, OUTPUT);
  pinMode (button0, INPUT_PULLUP);
  pinMode (button1, INPUT_PULLUP);
  digitalWrite(Mode0,LOW);
  digitalWrite(Mode1, LOW);
  digitalWrite(Mode2, LOW);
  Serial.begin(9600); // put your setup code here, to run once:

}
 void loop() {
  if (digitalRead(button0) == HIGH )
  {  
    digitalWrite(dirPin,HIGH); 
    digitalWrite (nRESET,HIGH);
    for(int i=1;i <=numerodepassos; i++){
    Serial.println(button0);
    digitalWrite(stepPin, HIGH);
    delayMicroseconds(1000);
    digitalWrite(stepPin, LOW);
    delayMicroseconds(1000);
    }
  }
  else
  {
    if (digitalRead(button1) == HIGH)
  {
   digitalWrite(dirPin,LOW); 
   digitalWrite (nRESET,HIGH); 
    for(int i=1;i <=numerodepassos; i++){
     Serial.println(button1);
    digitalWrite(stepPin, HIGH);
    delayMicroseconds(1000);
    digitalWrite(stepPin, LOW);
    delayMicroseconds(1000);
    }
    }
  }
}
2 
if (digitalRead(button0) == HIGH )

Will only execute as long as the button is pressed. If you want to cotinue untill it's done you need to remember the button is pressed, do stuff while you remembered it was pressed and forget it when you're finished.

Pseudo code

if(buttonbecomesPressed()){
  doStuff = true;
}
if(doStuff){
  //do stuff
  
  if(doneDoingStuff()){
    doStuff = false;
  }
}
3

Instead of this, the motor stops when I stop to press the button! How do I solve this?

Detect when the button becomes pressed rather than when it is pressed.

See the StateChangeDetection example in the IDE.