#include <Stepper.h>

//电动机每转一圈的步数，根据步进电机的实际情况来设置
const int stepsPerRevolution = 200;
int motSpeed = 5;
Stepper myStepper(stepsPerRevolution, 8,9,10,11);
int motDirect = 1;

const int btnPin = 7;
int btnVal = 0;
int btnBefore = 1;
int btnNext = 1;

void setup() {
  
  Serial.begin(115200);
  //这里设置的速度是rpm，即每分钟转多少圈
  myStepper.setSpeed(motSpeed);

  pinMode(btnPin, INPUT_PULLUP);
}

void loop() {
  
  btnVal = digitalRead(btnPin);
  btnNext = btnVal;
  Serial.print("btnBefore: ");
  Serial.print(btnBefore);
  Serial.print(", btnNext: ");
  Serial.println(btnNext);

  if(btnBefore == 0 && btnNext == 1){
    Serial.println("onBtnRelease");
    motDirect *= -1;
  }
  Serial.print("motDirect: ");
  Serial.println(motDirect);

  btnBefore = btnNext;

  //设置步进电机要转过的步数
  myStepper.step(1 * motDirect);
  //delay(10);
}