虚拟鼠标实验

本是古典何须时尚 2022-11-21 14:57 125阅读 0赞

# 虚拟鼠标实验 #

### 实验现象 ###

按键模拟鼠标向左移动，向右移动，点击左键等操作

### 原理图 ###

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzQ1NjcxNzMy_size_16_color_FFFFFF_t_70_pic_center]

### 代码编写 ###

#include<Mouse.h>
    #define KEY1 2 //左移
    #define KEY2 3 //右移
    #define KEY3 4 //左键
    int Flag_up = 1;
    
    void setup()
    { 
      pinMode(KEY1, INPUT_PULLUP);
      pinMode(KEY2, INPUT_PULLUP);
      pinMode(KEY3, INPUT_PULLUP);
      Mouse.begin();
    }
    
    void loop()
    { 
      if ( ScanKey(1) == 1)     //左移
      { 
        Mouse.move(-40, 0);     //左移40
      }
      else if (ScanKey(1) == 2) //右移
      { 
        Mouse.move(40, 0);
      }
      else if (ScanKey(1) == 3) //左键按下
      { 
        Mouse.click(MOUSE_LEFT);
      }
    }
    
    unsigned char ScanKey(int mode)     //按键扫描程序，返回键值
    { 
      if (mode)             //mode = 1时候，该代码支持长按。mode = 0时候，不支持长按
      { 
        Flag_up = 1;
      }
    
      if (Flag_up  && (digitalRead(KEY1) == LOW || digitalRead(KEY2) == LOW || digitalRead(KEY3) == LOW) )      //当Flag_up = 1并且按键按下时
      { 
        Flag_up = 0;            //清空Flag_up
        delay(30);              //延时去抖动
        if (digitalRead(KEY1) == LOW)   //按键按下
        { 
          return 1;             //返回键值1
        }
        if (digitalRead(KEY2) == LOW)   //按键按下
        { 
          return 2;             //返回键值2
        }
        if (digitalRead(KEY3) == LOW)   //按键按下
        { 
          return 3;             //返回键值3
        }
      }
      if (digitalRead(KEY1) == HIGH && digitalRead(KEY2) == HIGH && digitalRead(KEY3) == HIGH)  //按键松开时候
      { 
        Flag_up = 1;            //置位Flag_up
      }
      return 0;             //返回键值0
    }

[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzQ1NjcxNzMy_size_16_color_FFFFFF_t_70_pic_center]: /images/20221120/3a3cc3514a15456ca9df9027e7f14ac4.png