(二)数码管-arduino系列教程

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程序

nt pinDigitron = 2; //管脚D2连接到数码管的A脚，D3连B... D9连h  
  
void setup() {  
  for(int x=0; x<8; x++)  
    pinMode(pinDigitron+x, OUTPUT); //设置各脚为输出状态  
}  
  
//在数码管中显示数字的函数  
void displayDigit(unsigned char digit) {  
  //定义一个数组表：不同数字的abcdefgh各段的取值  
  unsigned char abcdefgh[][8] = {   
    {0,1,1,1,1,0,1,1},  //1  
    {0,0,1,0,1,1,0,0},  //2  
    {0,0,1,0,1,0,0,1},  //3  
    {0,1,0,0,1,0,1,1},  //4  
    {1,0,0,0,1,0,0,1},  //5  
    {1,0,0,0,1,0,0,0},  //6  
    {0,0,1,1,1,0,1,1},  //7  
    {0,0,0,0,1,0,0,0},  //8  
    {0,0,0,0,1,0,0,1},  //9  
    {0,0,0,0,1,0,1,0},  //A  
    {1,1,0,0,1,0,0,0},  //b  
    {1,0,0,1,1,1,0,0},  //C  
    {0,1,1,0,1,0,0,0},  //d  
    {1,0,0,0,1,1,0,0},  //E  
    {1,0,0,0,1,1,1,0},  //F  
  };  
    
  if ( digit >= 15 ) return;  
  for (unsigned char x=0; x<8; x++)  
    digitalWrite( pinDigitron + x, abcdefgh[digit][x] );  
}  
  
void loop() {   
   //在数码管中显示1-9,A-F各个数字  
   for (int x=0; x<15; x++) {  
     displayDigit(x);  //调用displayDigit()子函数，显示数字  
     delay(1000); //等待1000毫秒  
   }  
}  

接线图

演示视频

数码管

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有任何疑问和想法，欢迎在评论区与我交流。