// 定义霍尔传感器和按钮的引脚
const int hallSensorPin1 = 2; // 第一个霍尔传感器引脚连接到Arduino的数字引脚2
const int hallSensorPin2 = 3; // 第二个霍尔传感器引脚连接到Arduino的数字引脚3
const int buttonPin = 4;      // 按钮引脚连接到Arduino的数字引脚4

// 定义电机控制引脚
const int motorPin1 = 5; // 电机引脚1连接到Arduino的数字引脚5
const int motorPin2 = 6; // 电机引脚2连接到Arduino的数字引脚6
// 定义电机控制引脚
const int motorPina1 = 7; // 电机引脚1连接到Arduino的数字引脚5
const int motorPina2 = 8; // 电机引脚2连接到Arduino的数字引脚6


void setup() {
  // 初始化霍尔传感器和按钮的引脚
  pinMode(hallSensorPin1, INPUT_PULLUP);
  pinMode(hallSensorPin2, INPUT_PULLUP);
  pinMode(LED_BUILTIN,OUTPUT);
  pinMode(buttonPin, INPUT_PULLUP); // 使用内置上拉电阻

  // 初始化电机控制引脚
  pinMode(motorPin1, OUTPUT);
  pinMode(motorPin2, OUTPUT);

  digitalWrite(LED_BUILTIN,HIGH);
  stopMotor();
}

void loop() {
  // put your main code here, to run repeatedly:
if(digitalRead(buttonPin)==0){
forward();

}else if(digitalRead(hallSensorPin1)==0){
  backward();
}else if(digitalRead(hallSensorPin2)== 0){
  stopMotor();
}
}
void forward() {
  digitalWrite(motorPin1, HIGH);
  digitalWrite(motorPin2, LOW);
}

void backward() {
  digitalWrite(motorPina1, HIGH);
  digitalWrite(motorPina2, LOW);
}

void stopMotor() {
  digitalWrite(motorPin1, LOW);
  digitalWrite(motorPin2, LOW);
  digitalWrite(motorPina1, LOW);
  digitalWrite(motorPina2, LOW);
}