// %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
// WOKWI:  A bipolar stepper motor
// The stepper motor moves 1.8 degrees per step (200 steps per revolution).
// The motor also supports half-stepping (0.9 degrees per step / 400 steps per revolution). 
// Pin names
// Name	Description
// A-	Coil A negative signal
// A+	Coil A positive signal
// B+	Coil B positive signal
// B-	Coil B negative signal
// %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%

#include <Stepper.h>

const int stepsPerRevolution = 200;  // change this to fit the number of steps per revolution
// for your motor

// initialize the stepper library: give a name, define revolutions and pins, on pins 8 through 11: 8=IN4, 10=IN2, 9=IN3, 11=IN1;
Stepper myStepper(stepsPerRevolution, 8, 9, 10, 11);       // Stepper myStepper(stepsPerRevolution, B-, B+, A+, A-); (IN4, IN2, IN3, IN1)

int buttonPin = 13    ;               // Pin 13 ist digital input pin for button
bool buttonPressed;                   // status buttonPressed is boolean (true/false)


void setup() 
{ Serial.begin(9600);                            // initialize the serial port:
  
  myStepper.setSpeed(60);                        // set the speed at 60 rpm:
  
  pinMode(buttonPin, INPUT_PULLUP);              // button pin is normally pulled up to 5V (high, true), goes to GND (low, false) if pressed
  buttonPressed = true;                          // 'true' means button is not pressed, so 5V (high, true)
}


void loop() 
{ /*
  Serial.println("clockwise");                   // step one revolution  in one direction:
  myStepper.step(stepsPerRevolution);
  delay(500);
  Serial.println("counterclockwise");            // step one revolution in the other direction:
  myStepper.step(-stepsPerRevolution);
  delay(500);
  */
  
  buttonPressed = digitalRead(buttonPin);        // is the button pressed? low/false=pressed (GND), high/true=not pressed (5V)
  if (buttonPressed == false)                    // false = button pressed to GND (low)
  {
    myStepper.step(stepsPerRevolution / 8);      // make 1/8 revolutions
    delay(50);
    buttonPressed = true;
  }
}


// %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%

/*======================================================================== 
  Stepper motor learning on UNO, driver chip ULN3003AN, motor28BYJ-48
  Aug. 2023 
  added: emmgee: Button on pin 13 to GND. If pressed: 1/8 revolution
  ========================================================================
/*
  www.elegoo.com   2018.10.25
  Stepper Motor Control - one revolution
  This program drives a unipolar or bipolar stepper motor.
  The motor is attached to digital pins 8 - 11 of the Arduino.

  The motor should revolve one revolution in one direction, then
  one revolution in the other direction.
*/

/*
#include <Stepper.h>                  // standard library for stepper motors

const int stepsPerRevolution = 2048;  // change this to fit the number of steps per revolution. 2048 equals 360 degrees
const int rolePerMinute = 10;         // Adjustable range of 28BYJ-48 stepper is 0~17 rpm (default 15)

// initialize the stepper library: give a name, define revolutions and pins, on pins 8 through 11: 8=IN4, 10=IN2, 9=IN3, 11=IN1;
Stepper myStepper(stepsPerRevolution, 8, 10, 9, 11);      // Stepper myStepper(stepsPerRevolution, IN4, IN2, IN3, IN1); (B-, B+, A+, A-)

int buttonPin = 13;                     // Pin 13 ist digital input pin for button
bool buttonPressed;                     // status buttonPressed is boolean (true/false)

void setup() 
{
  Serial.begin(115200);                 // initialize the serial port,  Serial.begin(9600); 
  
  myStepper.setSpeed(rolePerMinute);    // or just: myStepper.setSpeed(10);
  
  pinMode(buttonPin, INPUT_PULLUP);     // button pin is normally pulled up to 5V (high, true), goes to GND (low, false) if pressed
  buttonPressed = true;                 // 'true' means button is not pressed, so 5V (high, true)
}

void loop() 
{  
 //   
  Serial.println("clockwise");          // step one revolution  in one direction (positive):
  myStepper.step(stepsPerRevolution);   // make a full revolution with 2048 steps. Or: myStepper.step(stepsPerRevolution/4);
  delay(500);
  Serial.println("counterclockwise");   // step one revolution in the other  (negative):
  myStepper.step(-stepsPerRevolution);  // make a full revolution in other (-) direction.  
  delay(500);
 //
 
  buttonPressed = digitalRead(buttonPin);  // is the button pressed? low/false=pressed (GND), high/true=not pressed (5V)
  if (buttonPressed == false)                   // false = button pressed to GND (low)
  {
    myStepper.step(stepsPerRevolution / 8);     // make 1/8 revolutions
    delay(50);
    buttonPressed = true;
  } 

}
*/