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I am using Uno and the A4988 driver with nema17 motor and finally the Accelstepper, I want to make the motor run endlessly in a direction, but when I press a button I want it to stop and run in the other direction also endlessly until I push the button again, here is my code:

// Include the AccelStepper Library
#include <AccelStepper.h>

// Define pin connections
const int dirPin = 2;
const int stepPin = 3;
const int dirButton = 8;
int potPin = 0;

int buttonState = 0;

// Define motor interface type
#define motorInterfaceType 1

// Creates an instance
AccelStepper myStepper(motorInterfaceType, stepPin, dirPin);

void setup() {
  pinMode(dirPin, OUTPUT);
  pinMode(dirButton, INPUT_PULLUP);
  myStepper.setMaxSpeed(500);
  Serial.begin(9600);
}

void loop() {
  int speed = analogRead(potPin)/4;
  myStepper.setSpeed(speed);
  digitalWrite(dirPin,LOW);
  buttonState = digitalRead(dirButton);
  
  if(buttonState = 0){
    
  }
  
  Serial.print(buttonState);
  delay(5);
  myStepper.run();
}

so the question is what should i put inside the :

if(buttonState = 0){
        
}

to make it switch direction?

I tried countless examples from the internet but the motor never changes direction.

thanks

Galal Rashid Sallam
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    `direction = ! direction;` – jsotola Jun 30 '21 at 01:18
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    `buttonState = 0` is an assignments, sets button state to zero and the expression itself evaluates to zero. So your `if` condition is always false. Use `==` for comparison. – Mat Jun 30 '21 at 05:54

0 Answers0