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2018-4-16 15:44 上傳
單片機源程序如下:
- //============================智宇科技===========================
- // 智能小車紅外避障實驗1(基礎避障)
- //===============================================================
- //#include <Servo.h>
- int Left_motor_go=8; //左電機前進(IN1)
- int Left_motor_back=9; //左電機后退(IN2)
- int Right_motor_go=10; // 右電機前進(IN3)
- int Right_motor_back=11; // 右電機后退(IN4)
- int key=7;//定義按鍵 數字7 接口
- int beep=12;//定義蜂鳴器 數字12 接口
- const int SensorRight = 3; //右循跡紅外傳感器(P3.2 OUT1)
- const int SensorLeft = 4; //左循跡紅外傳感器(P3.3 OUT2)
- const int SensorRight_2 = 5; //右紅外傳感器(P3.4 OUT3)
- const int SensorLeft_2 = 6; //左紅外傳感器(P3.5 OUT4)
- int SL; //左循跡紅外傳感器狀態
- int SR; //右循跡紅外傳感器狀態
- int SL_2; //左紅外傳感器狀態
- int SR_2; //右紅外傳感器狀態
- void setup()
- {
- //初始化電機驅動IO為輸出方式
- pinMode(Left_motor_go,OUTPUT); // PIN 8 (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);//定義按鍵接口為輸入接口
- pinMode(beep,OUTPUT);
- pinMode(SensorRight, INPUT); //定義右循跡紅外傳感器為輸入
- pinMode(SensorLeft, INPUT); //定義左循跡紅外傳感器為輸入
- pinMode(SensorRight_2, INPUT); //定義右紅外傳感器為輸入
- pinMode(SensorLeft_2, INPUT); //定義左紅外傳感器為輸入
- }
- //=======================智能小車的基本動作=========================
- //void run(int time) // 前進
- void run() // 前進
- {
- digitalWrite(Right_motor_go,HIGH); // 右電機前進
- digitalWrite(Right_motor_back,LOW);
- analogWrite(Right_motor_go,200);//PWM比例0~255調速,左右輪差異略增減
- analogWrite(Right_motor_back,0);
- digitalWrite(Left_motor_go,LOW); // 左電機前進
- digitalWrite(Left_motor_back,HIGH);
- analogWrite(Left_motor_go,0);//PWM比例0~255調速,左右輪差異略增減
- analogWrite(Left_motor_back,200);
- //delay(time * 100); //執行時間,可以調整
- }
- void brake(int time) //剎車,停車
- {
- digitalWrite(Right_motor_go,LOW);
- digitalWrite(Right_motor_back,LOW);
- digitalWrite(Left_motor_go,LOW);
- digitalWrite(Left_motor_back,LOW);
- delay(time * 100);//執行時間,可以調整
- }
- //void left(int time) //左轉(左輪不動,右輪前進)
- void left() //左轉(左輪不動,右輪前進)
- {
- digitalWrite(Right_motor_go,HIGH); // 右電機前進
- digitalWrite(Right_motor_back,LOW);
- analogWrite(Right_motor_go,200);
- analogWrite(Right_motor_back,0);//PWM比例0~255調速
- digitalWrite(Left_motor_go,LOW); //左輪后退
- digitalWrite(Left_motor_back,LOW);
- analogWrite(Left_motor_go,0);
- analogWrite(Left_motor_back,0);//PWM比例0~255調速
- //delay(time * 100); //執行時間,可以調整
- }
- void spin_left(int time) //左轉(左輪后退,右輪前進)
- {
- digitalWrite(Right_motor_go,HIGH); // 右電機前進
- digitalWrite(Right_motor_back,LOW);
- analogWrite(Right_motor_go,200);
- analogWrite(Right_motor_back,0);//PWM比例0~255調速
- digitalWrite(Left_motor_go,HIGH); //左輪后退
- digitalWrite(Left_motor_back,LOW);
- analogWrite(Left_motor_go,200);
- analogWrite(Left_motor_back,0);//PWM比例0~255調速
- delay(time * 100); //執行時間,可以調整
- }
- //void right(int time)
- void right() //右轉(右輪不動,左輪前進)
- {
- digitalWrite(Right_motor_go,LOW); //右電機后退
- digitalWrite(Right_motor_back,LOW);
- analogWrite(Right_motor_go,0);
- analogWrite(Right_motor_back,0);//PWM比例0~255調速
- digitalWrite(Left_motor_go,LOW);//左電機前進
- digitalWrite(Left_motor_back,HIGH);
- analogWrite(Left_motor_go,0);
- analogWrite(Left_motor_back,200);//PWM比例0~255調速
- //delay(time * 100); //執行時間,可以調整
- }
- void spin_right(int time) //右轉(右輪后退,左輪前進)
- {
- digitalWrite(Right_motor_go,LOW); //右電機后退
- digitalWrite(Right_motor_back,HIGH);
- analogWrite(Right_motor_go,0);
- analogWrite(Right_motor_back,200);//PWM比例0~255調速
- digitalWrite(Left_motor_go,LOW);//左電機前進
- digitalWrite(Left_motor_back,HIGH);
- analogWrite(Left_motor_go,0);
- analogWrite(Left_motor_back,200);//PWM比例0~255調速
- delay(time * 100); //執行時間,可以調整
- }
- void back(int time) //后退
- {
- digitalWrite(Right_motor_go,LOW); //右輪后退
- digitalWrite(Right_motor_back,HIGH);
- analogWrite(Right_motor_go,0);
- analogWrite(Right_motor_back,150);//PWM比例0~255調速
- digitalWrite(Left_motor_go,HIGH); //左輪后退
- digitalWrite(Left_motor_back,LOW);
- analogWrite(Left_motor_go,150);
- analogWrite(Left_motor_back,0);//PWM比例0~255調速
- delay(time * 100); //執行時間,可以調整
- }
- //==========================================================
- void keysacn()//按鍵掃描
- {
- int val;
- val=digitalRead(key);//讀取數字7 口電平值賦給val
- while(!digitalRead(key))//當按鍵沒被按下時,一直循環
- {
- val=digitalRead(key);//此句可省略,可讓循環跑空
- }
- while(digitalRead(key))//當按鍵被按下時
- {
- delay(10); //延時10ms
- val=digitalRead(key);//讀取數字7 口電平值賦給val
- if(val==HIGH) //第二次判斷按鍵是否被按下
- {
- digitalWrite(beep,HIGH); //蜂鳴器響
- while(!digitalRead(key)) //判斷按鍵是否被松開
- digitalWrite(beep,LOW); //蜂鳴器停止
- }
- else
- digitalWrite(beep,LOW);//蜂鳴器停止
- }
- }
- void loop()
- {
- keysacn(); //調用按鍵掃描函數
- while(1)
- {
- //有信號為LOW 沒有信號為HIGH
- SR_2 = digitalRead(SensorRight_2);
- SL_2 = digitalRead(SensorLeft_2);
- if (SL_2 == HIGH&&SR_2==HIGH)//前面沒有障礙物
- run(); //調用前進函數
- else if (SL_2 == HIGH & SR_2 == LOW)// 右邊探測到有障礙物,有信號返回,向左轉
- left();//調用左轉函數
- else if (SR_2 == HIGH & SL_2 == LOW) //左邊探測到有障礙物,有信號返回,向右轉
- right();//調用右轉函數
- else // 都是有障礙物, 后退
- {
- back(3);//后退300MS
- left();//調用左轉函數
- delay(500); //延時500ms
- }
- }
- }
復制代碼
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