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標題: 基于樹莓派C語言編程的數碼管計數器制作 [打印本頁]
作者: 花菜燉可愛    時間: 2018-12-10 11:05
標題: 基于樹莓派C語言編程的數碼管計數器制作
本次設計的數碼管計數器是基于樹莓派編程，應用材料只需按鍵開關一個、一位共陽數碼管一個、杜邦線數根。用樹莓派進行C語言編程，使其計數器實現初始為零、按鍵+1的效果，因考慮材料有限，數據顯示為0-9的循環顯示。從0開始按鍵+1一直到9，數據顯示到9之后按鍵繼續按下又再次回到數字0，按鍵+1到9。以此的一個按鍵+1的0-9的循環。



接線表：
  
數碼管引腳及按鍵開關接口
WPi
  
physical
  
A
25
  
37
B
24
  
35
C
23
  
33
D
22
  
31
E
21
  
29
F
14
  
23
G
13
  
21
DP
12
  
19
GND
26
  
32
Key
2
  
13
Key GND
OV
  
39


源碼：
  1. #include<wiringPi.h>
  2. #include<unistd.h>
  3. #include<time.h>
  4. #define LED_A 25  //定義數碼管引腳
  5. #define LED_B 24
  6. #define LED_C 23
  7. #define LED_D 22
  8. #define LED_E 21
  9. #define LED_F 14
  10. #define LED_G 13
  11. #define LED_DP 12
  12. #define DIGIT1 26
  13. #define btn 2   //定義按鍵開關引腳
  14. unsigned char num=0;  //初始化num=0
  15. void showDigit( int num);
  16. int main (void)
  17. {
  18.   wiringPiSetup ();  //設置數碼管引腳模式
  19. pinMode (LED_A, OUTPUT);
  20. pinMode (LED_B, OUTPUT);
  21.   pinMode (LED_C, OUTPUT);
  22.   pinMode (LED_D, OUTPUT);
  23.   pinMode (LED_E, OUTPUT);
  24.   pinMode (LED_F, OUTPUT);
  25.   pinMode (LED_G, OUTPUT);
  26.   pinMode (LED_DP, OUTPUT);
  27.   pinMode (DIGIT1, OUTPUT);
  28.   pinMode (btn, INPUT);
  29.   pullUpDnControl (btn, PUD_UP);
  30.   digitalWrite (DIGIT1, HIGH);
  31. num=0;
  32. while(1)
  33. {
  34.         if(digitalRead(btn)==0)  //按鍵輸出為高電平時
  35. {
  36. while(digitalRead(btn)==0);
  37. showDigit(num);
  38. delay(50);  //延時
  39. num=num+1;  //num加1
  40. if(num<0)  //當num<0時
  41. {
  42. num=0;  //num=0
  43. }
  44. if(num>9)  //當num>9時
  45. {
  46. num=0;  //num=0
  47. }
  48. }
  49. }
  50. }

  52. void showDigit(int num)
  53. {
  54.   if (num == 0)  //顯示數字0
  55. {
  56.     digitalWrite (LED_A, LOW) ;
  57.     digitalWrite (LED_B, LOW) ;
  58.     digitalWrite (LED_C, LOW) ;
  59.     digitalWrite (LED_D, LOW) ;
  60.     digitalWrite (LED_E, LOW) ;
  61.     digitalWrite (LED_F, LOW) ;
  62.     digitalWrite (LED_G, HIGH) ;
  63.   }
  64. else if (num == 1)  //顯示數字1
  65. {
  66.     digitalWrite (LED_A, HIGH) ;
  67.     digitalWrite (LED_B, LOW) ;
  68.     digitalWrite (LED_C, LOW) ;
  69.     digitalWrite (LED_D, HIGH) ;
  70.     digitalWrite (LED_E, HIGH) ;
  71.     digitalWrite (LED_F, HIGH) ;
  72.     digitalWrite (LED_G, HIGH) ;
  73.   }
  74. else if (num == 2)  //顯示數字2
  75. {
  76.     digitalWrite (LED_A, LOW) ;
  77.     digitalWrite (LED_B, LOW) ;
  78. digitalWrite (LED_C, HIGH) ;
  79. digitalWrite (LED_D, LOW) ;
  80. digitalWrite (LED_E, LOW) ;
  81. digitalWrite (LED_F, HIGH) ;
  82. digitalWrite (LED_G, LOW) ;
  83.   }
  84. else if (num == 3) //顯示數字3
  85. {
  86.     digitalWrite (LED_A, LOW) ;
  87.     digitalWrite (LED_B, LOW) ;
  88.     digitalWrite (LED_C, LOW) ;
  89.     digitalWrite (LED_D, LOW) ;
  90.     digitalWrite (LED_E, HIGH) ;
  91.     digitalWrite (LED_F, HIGH) ;
  92.     digitalWrite (LED_G, LOW) ;
  93.   }
  94. else if (num == 4)  //顯示數字4
  95. {
  96.     digitalWrite (LED_A, HIGH) ;
  97.     digitalWrite (LED_B, LOW) ;
  98.     digitalWrite (LED_C, LOW) ;
  99.     digitalWrite (LED_D, HIGH) ;
  100.     digitalWrite (LED_E, HIGH) ;
  101.     digitalWrite (LED_F, LOW) ;
  102.     digitalWrite (LED_G, LOW) ;
  103.   }
  104. else if (num == 5)  //顯示數字5
  105. {
  106.     digitalWrite (LED_A, LOW) ;
  107.     digitalWrite (LED_B, HIGH) ;
  108.     digitalWrite (LED_C, LOW) ;
  109.     digitalWrite (LED_D, LOW) ;
  110.     digitalWrite (LED_E, HIGH) ;
  111.     digitalWrite (LED_F, LOW) ;
  112.     digitalWrite (LED_G, LOW) ;
  113.   }
  114. else if (num == 6)  //顯示數字6
  115. {
  116.     digitalWrite (LED_A, LOW) ;
  117.     digitalWrite (LED_B, HIGH) ;
  118.     digitalWrite (LED_C, LOW) ;
  119.     digitalWrite (LED_D, LOW) ;
  120.     digitalWrite (LED_E, LOW) ;
  121.     digitalWrite (LED_F, LOW) ;
  122.     digitalWrite (LED_G, LOW) ;
  123.   }
  124. else if (num == 7)  //顯示數字7
  125. {
  126.     digitalWrite (LED_A, LOW) ;
  127.     digitalWrite (LED_B, LOW) ;
  128.     digitalWrite (LED_C, LOW) ;
  129.     digitalWrite (LED_D, HIGH) ;
  130.     digitalWrite (LED_E, HIGH) ;
  131.     digitalWrite (LED_F, HIGH) ;
  132.     digitalWrite (LED_G, HIGH) ;
  133.   }
  134. else if (num == 8) //顯示數字8
  135. {
  136.     digitalWrite (LED_A, LOW) ;
  137.     digitalWrite (LED_B, LOW) ;
  138.     digitalWrite (LED_C, LOW) ;
  139.     digitalWrite (LED_D, LOW) ;
  140.     digitalWrite (LED_E, LOW) ;
  141.     digitalWrite (LED_F, LOW) ;
  142.     digitalWrite (LED_G, LOW) ;
  143.   }
  144. else if (num == 9)  //顯示數字9
  145. {
  146.     digitalWrite (LED_A, LOW) ;
  147.     digitalWrite (LED_B, LOW) ;
  148.     digitalWrite (LED_C, LOW) ;
  149.     digitalWrite (LED_D, LOW) ;
  150.     digitalWrite (LED_E, HIGH) ;
  151.     digitalWrite (LED_F, LOW) ;
  152.     digitalWrite (LED_G, LOW) ;
  153.   }
  154. }
復制代碼

完整的Word格式文檔51黑下載地址：
樹莓派計數器.doc (342 KB, 下載次數: 16)






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