• ZYAR20A 亚克力2驱 蓝牙 298寻迹避障机器人 —— 小车红外避障实验(带后退掉头避障)


    在下载到开发板之前要选择好板和端口,具体参见:

    ZYAR20A 亚克力2驱 蓝牙 298寻迹避障机器人 —— Arduino相关设置

    代码

    //  智能小车红外避障实验1(基础避障)
    //===============================================================
    //#include <Servo.h> 
    int Left_motor_go=8;     //左电机前进(IN1)
    int Left_motor_back=9;     //左电机后退(IN2)
    
    int Right_motor_go=10;    // 右电机前进(IN3)
    int Right_motor_back=11;    // 右电机后退(IN4)
    
    int key=A2;//定义按键 数字A2 接口
    int beep=A3;//定义蜂鸣器 数字A3 接口
    
    int LED=7;//定义LED 数字7 接口
    
    const int SensorRight_2 = 5;   	//左边红外避障传感器()
    const int SensorLeft_2 = 6;   	//右边红外避障传感器()
    
    int SR_2;    //右边红外避障传感器状态
    int SL_2;    //左边红外避障传感器状态
    
    void setup()
    {
      //初始化电机驱动IO为输出方式
      pinMode(Left_motor_go,OUTPUT); // PIN 8 ( 无 PWM)
      pinMode(Left_motor_back,OUTPUT); // PIN 9 (PWM)
      pinMode(Right_motor_go,OUTPUT);// PIN 10 (PWM) 
      pinMode(Right_motor_back,OUTPUT);// PIN 11 (PWM)
      pinMode(key,INPUT);//定义按键接口为输入接口
      pinMode(beep,OUTPUT);//定义蜂鸣器为输出接口
      pinMode(LED,OUTPUT);//定义LED为输出接口
    
      pinMode(SensorRight_2, INPUT); //定义中间避障传感器为输入
    
    }
    //=======================智能小车的基本动作=========================
    //void run(int time)     // 前进
    void run()     // 前进
    {
      digitalWrite(Right_motor_go,HIGH);  // 右电机前进
      digitalWrite(Right_motor_back,LOW);     
      analogWrite(Right_motor_go,160);//PWM比例0~255调速,左右轮差异略增减
      analogWrite(Right_motor_back,0);
      digitalWrite(Left_motor_go,LOW);  // 左电机前进
      digitalWrite(Left_motor_back,HIGH);
      analogWrite(Left_motor_go,0);//PWM比例0~255调速,左右轮差异略增减
      analogWrite(Left_motor_back,160);
      //delay(time * 100);   //执行时间,可以调整  
    }
    
    void brake()  //刹车,停车
    {
      digitalWrite(Right_motor_go,LOW);
      digitalWrite(Right_motor_back,LOW);
      digitalWrite(Left_motor_go,LOW);
      digitalWrite(Left_motor_back,LOW);
      //delay(time * 100);//执行时间,可以调整  
    }
    
    //void left(int time)         //左转(左轮不动,右轮前进)
    void left()         //左转(左轮不动,右轮前进)
    {
      digitalWrite(Right_motor_go,HIGH);	// 右电机前进
      digitalWrite(Right_motor_back,LOW);
      analogWrite(Right_motor_go,200); 
      analogWrite(Right_motor_back,0);//PWM比例0~255调速
      digitalWrite(Left_motor_go,LOW);   //左轮后退
      digitalWrite(Left_motor_back,LOW);
      analogWrite(Left_motor_go,0); 
      analogWrite(Left_motor_back,0);//PWM比例0~255调速
      //delay(time * 100);	//执行时间,可以调整  
    }
    
    void spin_left( )         //左转(左轮后退,右轮前进)
    {
      digitalWrite(Right_motor_go,HIGH);	// 右电机前进
      digitalWrite(Right_motor_back,LOW);
      analogWrite(Right_motor_go,200); 
      analogWrite(Right_motor_back,0);//PWM比例0~255调速
      digitalWrite(Left_motor_go,HIGH);   //左轮后退
      digitalWrite(Left_motor_back,LOW);
      analogWrite(Left_motor_go,200); 
      analogWrite(Left_motor_back,0);//PWM比例0~255调速
      //delay(time * 100);	//执行时间,可以调整   
    }
    
    //void right(int time)
    void right()        //右转(右轮不动,左轮前进)
    {
      digitalWrite(Right_motor_go,LOW);   //右电机后退
      digitalWrite(Right_motor_back,LOW);
      analogWrite(Right_motor_go,0); 
      analogWrite(Right_motor_back,0);//PWM比例0~255调速
      digitalWrite(Left_motor_go,LOW);//左电机前进
      digitalWrite(Left_motor_back,HIGH);
      analogWrite(Left_motor_go,0); 
      analogWrite(Left_motor_back,200);//PWM比例0~255调速
      //delay(time * 100);	//执行时间,可以调整  
    }
    
    void spin_right()        //右转(右轮后退,左轮前进)
    {
      digitalWrite(Right_motor_go,LOW);   //右电机后退
      digitalWrite(Right_motor_back,HIGH);
      analogWrite(Right_motor_go,0); 
      analogWrite(Right_motor_back,200);//PWM比例0~255调速
      digitalWrite(Left_motor_go,LOW);//左电机前进
      digitalWrite(Left_motor_back,HIGH);
      analogWrite(Left_motor_go,0); 
      analogWrite(Left_motor_back,200);//PWM比例0~255调速
      //delay(time * 100);	//执行时间,可以调整    
    }
    
    void back()          //后退
    {
      digitalWrite(Right_motor_go,LOW);  //右轮后退
      digitalWrite(Right_motor_back,HIGH);
      analogWrite(Right_motor_go,0);
      analogWrite(Right_motor_back,150);//PWM比例0~255调速
      digitalWrite(Left_motor_go,HIGH);  //左轮后退
      digitalWrite(Left_motor_back,LOW);
      analogWrite(Left_motor_go,150);
      analogWrite(Left_motor_back,0);//PWM比例0~255调速
      //delay(time * 100);     //执行时间,可以调整 
    }
    //==========================================================
    
    void keysacn()//按键扫描
    {
      int val;
      val=digitalRead(key);//读取数字7 口电平值赋给val
      while(!digitalRead(key))//当按键没被按下时,一直循环
      {
        val=digitalRead(key);//此句可省略,可让循环跑空
      }
      while(digitalRead(key))//当按键被按下时
      {
        delay(10);	//延时10ms
        val=digitalRead(key);//读取数字7 口电平值赋给val
        if(val==HIGH)  //第二次判断按键是否被按下
        {
          digitalWrite(beep,HIGH);		//蜂鸣器响
          while(!digitalRead(key))	//判断按键是否被松开
            digitalWrite(beep,LOW);		//蜂鸣器停止
        }
        else
          digitalWrite(beep,LOW);//蜂鸣器停止
      }
    }
    
    void loop()
    {
      keysacn();	   //调用按键扫描函数
      while(1)
      {
      //有信号为LOW  没有信号为HIGH
        SR_2 = digitalRead(SensorRight_2);
        SL_2 = digitalRead(SensorLeft_2);
        if (SL_2 == HIGH&&SR_2==HIGH)
          {
            run();   //调用前进函数
             digitalWrite(beep,LOW);
          }
        else if (SL_2 == HIGH & SR_2 == LOW)// 右边探测到有障碍物,有信号返回,向左转 
            left();
        else if (SR_2 == HIGH & SL_2 == LOW) //左边探测到有障碍物,有信号返回,向右转  
          spin_right();
        else // 都是有障碍物, 后退
        {
            digitalWrite(beep,HIGH);		//蜂鸣器响
             //digitalWrite(LED,HIGH);		//LED亮
             brake();//停止200MS
             delay(300);
             back();//后退500MS
             delay(400);
             left();//调用左转函数  延时500ms 
             delay(500); 
        }
          
      }
    }
    
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  • 原文地址:https://www.cnblogs.com/AlexKing007/p/12339250.html
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