原创 arduino 7段数码管显示实验

编译环境： DELL D630 笔记本

实验板：arduino  Duemilanove 改进版控制板 ATmega8（看下面的连接）。

http://blog.ednchina.com/huanan_/1983286/message.aspx

http://item.taobao.com/auction/item_detail.htm?item_num_id=9342078118

编译环境：arduino 0022

编译器截图：

[attachimg]147213[/attachimg]

实验代码如下：

int led_A =0;   //D0 ---- LED 7PIN

int led_B =1;   //D1 ---- LED 6PIN

int led_C =2;   //D2 ---- LED 4PIN

int led_D =3;   //D3 ---- LED 2PIN

int led_E =4;   //D4 ---- LED 1PIN

int led_F =5;   //D5 ---- LED 9PIN

int led_G =6;   //D6 ---- LED 10PIN

void display(int a)

{

  switch(a)

  {

    case 0:

    {

      digitalWrite(led_A,LOW);

      digitalWrite(led_B,LOW);

      digitalWrite(led_C,LOW);

      digitalWrite(led_D,LOW);

      digitalWrite(led_E,LOW);

      digitalWrite(led_F,LOW);

    }

    case 1:

    {

       digitalWrite(led_B,LOW);

       digitalWrite(led_C,LOW);

    }

  }

}

void setup()

{

  pinMode(led_A,OUTPUT);

  pinMode(led_B,OUTPUT);

  pinMode(led_C,OUTPUT);

  pinMode(led_D,OUTPUT);

  pinMode(led_E,OUTPUT);

  pinMode(led_F,OUTPUT);

  pinMode(led_G,OUTPUT);

  digitalWrite(led_A,HIGH);

  digitalWrite(led_B,HIGH);

  digitalWrite(led_C,HIGH);

  digitalWrite(led_D,HIGH);

  digitalWrite(led_E,HIGH);

  digitalWrite(led_F,HIGH);

  digitalWrite(led_G,HIGH);

}

void loop()

{

   digitalWrite(led_A,LOW);

   digitalWrite(led_B,LOW);

   digitalWrite(led_C,LOW);

   digitalWrite(led_D,LOW);

   digitalWrite(led_E,LOW);

   digitalWrite(led_F,LOW);

}

视频连接：

http://v.youku.com/v_show/id_XMjUzNDY2Njg0.html

运行效果图：

[attachimg]147216[/attachimg]

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