#include <Arduino.h>
#include "A4988.h"



//pins definition


#define modBtnPin   5
#define rotLftPin   4
#define rotRgtPin   3

#define lftLedPin   13
#define rgtLedPin   12

#define drvDirPin   14
#define drvStepPin  15
#define drvMS1Pin   16
#define drvMS2Pin   17
#define drvMS3Pin   18

//global variables
int drvRPM = 100;           //initial motor Revolution Per Minute
int drvMicrostep = 2;       //microsteping setup (1-full; 2-half; 4-quarter...)
const int drvSPR = 200;     //motor Step Per Revolution
int drvStep = 200;          // initial value of step no to rotate

//declaration of stepper motor
A4988 stepper(drvSPR,drvDirPin,drvStepPin,drvMS1Pin,drvMS2Pin,drvMS3Pin);

void setupButtons()
{
  pinMode(modBtnPin,INPUT_PULLUP);
  pinMode(rotLftPin,INPUT_PULLUP);
  pinMode(rotRgtPin,INPUT_PULLUP);
}

void setupLeds()
{
  pinMode(lftLedPin,OUTPUT);
  pinMode(rgtLedPin,OUTPUT);
  
  digitalWrite(lftLedPin,LOW);
  digitalWrite(rgtLedPin,LOW);
}

void setupDriver()
{
  pinMode(drvStep,OUTPUT);
  pinMode(drvDirPin,OUTPUT);

  digitalWrite(drvStep,LOW); //no movment
  digitalWrite(drvDirPin,LOW);

  stepper.begin(drvRPM,drvMicrostep);
}

void setup() {
  Serial.begin(9600);
  setupButtons();
  setupLeds();
  setupDriver();

}

void loop() {

  stepper.move(200);
  delay(600);
  stepper.move(-200);
  delay(600);

}