arduino八段数码管使用

一：八段数码管的使用

 

 

控制要求：0-9的计时数据

实物连接图：

 

 

 

 

 

控制代码：

//智慧自动化2018.6.11

int a=7;//定义数字接口7 连接a 段数码管

int b=6;// 定义数字接口6 连接b 段数码管

int c=5;// 定义数字接口5 连接c 段数码管

int d=10;// 定义数字接口10 连接d 段数码管

int e=11;// 定义数字接口11 连接e 段数码管

int f=8;// 定义数字接口8 连接f 段数码管

int g=9;// 定义数字接口9 连接g 段数码管

int dp=4;// 定义数字接口4 连接dp 段数码管

void digital_0(void) //显示数字5

{

  unsigned char j;

  digitalWrite(a,HIGH);

  digitalWrite(b,HIGH);

  digitalWrite(c,HIGH);

  digitalWrite(d,HIGH);

  digitalWrite(e,HIGH);

  digitalWrite(f,HIGH);

  digitalWrite(g,LOW);

  digitalWrite(dp,LOW);

}

void digital_1(void) //显示数字1

{

  unsigned char j;

  digitalWrite(c,HIGH);//给数字接口5 引脚高电平，点亮c 段

  digitalWrite(b,HIGH);//点亮b 段

  for(j=7;j<=11;j++)//熄灭其余段

  digitalWrite(j,LOW);

  digitalWrite(dp,LOW);//熄灭小数点DP 段

}

void digital_2(void) //显示数字2

{

  unsigned char j;

  digitalWrite(b,HIGH);

  digitalWrite(a,HIGH);

  for(j=9;j<=11;j++)

  digitalWrite(j,HIGH);

  digitalWrite(dp,LOW);

  digitalWrite(c,LOW);

  digitalWrite(f,LOW);

}

void digital_3(void) //显示数字3

{

  digitalWrite(g,HIGH);

  digitalWrite(a,HIGH);

  digitalWrite(b,HIGH);

  digitalWrite(c,HIGH);

  digitalWrite(d,HIGH);

  digitalWrite(dp,LOW);

  digitalWrite(f,LOW);

  digitalWrite(e,LOW);

}

void digital_4(void) //显示数字4

{

  digitalWrite(c,HIGH);

  digitalWrite(b,HIGH);

  digitalWrite(f,HIGH);

  digitalWrite(g,HIGH);

  digitalWrite(dp,LOW);

  digitalWrite(a,LOW);

  digitalWrite(e,LOW);

  digitalWrite(d,LOW);

}

void digital_5(void) //显示数字5

{

  unsigned char j;

  digitalWrite(a,HIGH);

  digitalWrite(b, LOW);

  digitalWrite(c,HIGH);

  digitalWrite(d,HIGH);

  digitalWrite(e, LOW);

  digitalWrite(f,HIGH);

  digitalWrite(g,HIGH);

  digitalWrite(dp,LOW);

}

void digital_6(void) //显示数字6

{

  unsigned char j;

  for(j=7;j<=11;j++)

  digitalWrite(j,HIGH);

  digitalWrite(c,HIGH);

  digitalWrite(dp,LOW);

  digitalWrite(b,LOW);

}

void digital_7(void) //显示数字7

{

  unsigned char j;

  for(j=5;j<=7;j++)

  digitalWrite(j,HIGH);

  digitalWrite(dp,LOW);

  for(j=8;j<=11;j++)

  digitalWrite(j,LOW);

}

void digital_8(void) //显示数字8

{

  unsigned char j;

  for(j=5;j<=11;j++)

  digitalWrite(j,HIGH);

  digitalWrite(dp,LOW);

}

void digital_9(void) //显示数字5

{

  unsigned char j;

  digitalWrite(a,HIGH);

  digitalWrite(b,HIGH);

  digitalWrite(c,HIGH);

  digitalWrite(d,HIGH);

  digitalWrite(e, LOW);

  digitalWrite(f,HIGH);

  digitalWrite(g,HIGH);

  digitalWrite(dp,LOW);

}

void setup()

{

  int i;//定义变量

  for(i=4;i<=11;i++)

  pinMode(i,OUTPUT);//设置4～11 引脚为输出模式

}

void loop()

{

  while(1)

  {

    digital_0();//显示数字1

    delay(1000);//延时1s

    digital_1();//显示数字1

    delay(1000);//延时1s

    digital_2();//显示数字2

    delay(1000); //延时1s

    digital_3();//显示数字3

    delay(1000); //延时1s

    digital_4();//显示数字4

    delay(1000); //延时1s

    digital_5();//显示数字5

    delay(1000); //延时1s

    digital_6();//显示数字6

    delay(1000); //延时1s

    digital_7();//显示数字7

    delay(1000); //延时1s

    digital_8();//显示数字8

    delay(1000); //延时1s

    digital_9();//显示数字8

    delay(1000); //延时1s

  }

}

控制代码

 

来源：oschina

链接：https://my.oschina.net/u/4359607/blog/3940739