累加器实验

你的名字 2022-12-13 04:37 141阅读 0赞

[四位共阴数码管][Link 1]

# 累加器实验 #

### 实验目的 ###

每当按下一个按键，数码管显示值加一

### 代码编写 ###

#include<Arduino.h>
    //I/O定义
    #define seg_a 2
    #define seg_b 3
    #define seg_c 4
    #define seg_d 5
    #define seg_e 6
    #define seg_f 7
    #define seg_g 8
    #define seg_h 9
    #define com1 10
    #define com2 11
    #define com3 12
    #define com4 13
    #define key 2
    int sum = 0;
    int flag_up = 1;
    unsigned char table[10][8] = { 
      { 0, 0, 1, 1, 1, 1, 1, 1},
      { 0, 0, 0, 0, 0, 1, 1, 0},
      { 0, 1, 0, 1, 1, 0, 1, 1},
      { 0, 1, 0, 0, 1, 1, 1, 1},
      { 0, 1, 1, 0, 0, 1, 1, 0},
      { 0, 1, 1, 0, 1, 1, 0, 1},
      { 0, 1, 1, 1, 1, 1, 0, 1},
      { 0, 0, 0, 0, 0, 1, 1, 1},
      { 0, 1, 1, 1, 1, 1, 1, 1},
      { 0, 1, 1, 0, 1, 1, 1, 1}
    };
    void setup() { 
      // put your setup code here, to run once:
      //将引脚设置为输出
      pinMode(seg_a, OUTPUT);
      pinMode(seg_b, OUTPUT);
      pinMode(seg_c, OUTPUT);
      pinMode(seg_d, OUTPUT);
      pinMode(seg_e, OUTPUT);
      pinMode(seg_f, OUTPUT);
      pinMode(seg_g, OUTPUT);
      pinMode(seg_h, OUTPUT);
      pinMode(com1, OUTPUT);
      pinMode(com2, OUTPUT);
      pinMode(com3, OUTPUT);
      pinMode(com4, OUTPUT);
      pinMode(key, INPUT_PULLUP);
    }
    unsigned char Scankey() { 
      //按键扫描程序
      if (flag_up && digitalRead(key) == LOW) {  //有按键按下
        flag_up = 0;
        delay(20);//延时去抖动
        if (digitalRead(key) == LOW) {  //有按键按下
          return 1;
        }
      }
      if (digitalRead(key) == HIGH) { 
        flag_up = 1;
      }
      return 0;
    }
    void loop() { 
      if (Scankey() == 1) { 
        sum++;
        if (sum > 9999) { 
          sum = 9999;
        }
      }
      Display(1, sum / 1000);
      delay(3);
      Display(2, sum % 1000 / 100);
      delay(3);
      Display(3, sum % 100 / 10);
      delay(3);
      Display(4, sum % 10);
      delay(3);
    }
    void Display(unsigned char com, unsigned char num) { 
      //去除余晖
      digitalWrite(seg_a, LOW);
      digitalWrite(seg_b, LOW);
      digitalWrite(seg_c, LOW);
      digitalWrite(seg_d, LOW);
      digitalWrite(seg_e, LOW);
      digitalWrite(seg_f, LOW);
      digitalWrite(seg_g, LOW);
      digitalWrite(seg_h, LOW);
      switch (com) { 
        case 1: {  //选择位1
            digitalWrite(com1, LOW);
            digitalWrite(com2, HIGH);
            digitalWrite(com3, HIGH);
            digitalWrite(com4, HIGH);
            break;
          }
        case 2: {  //选择位2
            digitalWrite(com1, HIGH);
            digitalWrite(com2, LOW);
            digitalWrite(com3, HIGH);
            digitalWrite(com4, HIGH);
            break;
          }
        case 3: { 
            digitalWrite(com1, HIGH);
            digitalWrite(com2, HIGH);
            digitalWrite(com3, LOW);
            digitalWrite(com4, HIGH);
            break;
          }
        case 4: { 
            digitalWrite(com1, HIGH);
            digitalWrite(com2, HIGH);
            digitalWrite(com3, HIGH);
            digitalWrite(com4, LOW);
            break;
          }
        default:
          break;
      }
      digitalWrite(seg_a, table[num][7]);
      digitalWrite(seg_b, table[num][6]);
      digitalWrite(seg_c, table[num][5]);
      digitalWrite(seg_d, table[num][4]);
      digitalWrite(seg_e, table[num][3]);
      digitalWrite(seg_f, table[num][2]);
      digitalWrite(seg_g, table[num][1]);
      digitalWrite(seg_h, table[num][0]);
    }

[步进电机驱动实验][Link 2]

[Link 1]: https://blog.csdn.net/qq_45671732/article/details/108983483
[Link 2]: https://blog.csdn.net/qq_45671732/article/details/109008534