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  1.  
  2. /*16*16點陣屏的顯示*/       
  3. /*******************
  4. PIN  --  点阵 
  5. -------------------
  6. DATA  --  Ser
  7. SCLH  --  Srck
  8. SCLT  --  rck
  9. AB  --  ab
  10. SC  --  ck
  11. *******************/
  12.  
  13. int DATA=3;                //列數據輸出位        
  14. int SCLH=4;                //列掃描時觸發位
  15. int SCLT=5;                //列數據鎖存位
  16. int AB  =6;                //行數據輸出位
  17. int SC=7;                  //行掃描時觸發位
  18. unsigned char i=0,j=0;
  19. unsigned char date[32];                //32字節RAM做為16*16點陣屏顯示緩存
  20.  
  21. void setup() {                
  22.   // initialize the digital pin as an output.
  23.   pinMode(DATA, OUTPUT);   
  24.   pinMode(SCLH, OUTPUT); 
  25.   pinMode(SCLT, OUTPUT); 
  26.   pinMode(AB, OUTPUT); 
  27.   pinMode(SC, OUTPUT);   
  28. }
  29.  
  30. int table1[32]={
  31. 0x00,0x04,0x00,0x04,0x00,0x0C,0x00,0x3C,0x00,0xE4,0x03,0xC4,0x0E,0x40,0x18,0x40,
  32. 0x1C,0x40,0x1F,0x40,0x07,0xE4,0x01,0xFC,0x00,0x7C,0x00,0x1C,0x00,0x04,0x00,0x04};/*"A"*/
  33. int table2[32]={
  34. 0x00,0x04,0x10,0x04,0x1F,0xFC,0x1F,0xFC,0x1F,0xFC,0x11,0x84,0x11,0x84,0x11,0x84,
  35. 0x11,0x84,0x11,0x84,0x11,0x84,0x1F,0x8C,0x1F,0xFC,0x0E,0x78,0x00,0x30,0x00,0x00};/*"B"*/
  36. int table3[32]={
  37. 0x00,0x00,0x03,0xE0,0x07,0xF0,0x0F,0xF8,0x0C,0x1C,0x18,0x0C,0x10,0x04,0x10,0x04,
  38. 0x10,0x04,0x10,0x04,0x10,0x04,0x10,0x04,0x10,0x08,0x18,0x08,0x0C,0x30,0x00,0x00};/*"C"*/
  39. int table4[32]={
  40. 0x00,0x00,0x10,0x04,0x1F,0xFC,0x1F,0xFC,0x1F,0xFC,0x10,0x04,0x10,0x04,0x10,0x04,
  41. 0x10,0x04,0x10,0x0C,0x18,0x0C,0x0C,0x18,0x0F,0xF8,0x07,0xF0,0x03,0xE0,0x00,0x00};/*"D"*/
  42.  
  43. /* 顯示函數 */
  44. void display()
  45. {        
  46.         unsigned char i,ia,j,tmp;  //定義變量
  47.         digitalWrite(AB,LOW);            //將行數據位清0，準備移位
  48.         for(i=0;i<=16;i++)           //循環輸出16行數據
  49.         {                
  50.                 digitalWrite(SC,LOW);        //為行移位做準備
  51.                 digitalWrite(SCLT,LOW);        //為列鎖存做準備
  52.                 for(ia=2;ia>0;)                //每行16個點，循環位移兩個字節,循環兩次
  53.                 {        
  54.                         ia--;                
  55.                         tmp=date[i*2+ia];  //讀取點陣數據做輸出                           
  56.                         shiftOut(DATA,SCLH,LSBFIRST,tmp);  //將DATA上的數據移入寄存器                                              
  57.                 }        
  58.                  PORTD |= 0xa0;                //移入两个字节结束,SCK\SCLT拉高.
  59.                 digitalWrite(AB,HIGH);        //行数据位只在第一行时为0，其它时候都为1
  60.                                                          //移位的过程，AB就必需是1
  61.         }                                                                        
  62.         j=64;
  63.         while(j--);               //移入兩個字節結束,SCK\SCLT拉高
  64.         digitalWrite(SC,LOW);                        
  65.         digitalWrite(SC,HIGH);       //行數據位只在第一行時為0，其它時候都為1
  66.                                     //移位的過程，AB就必需是1
  67. }
  68.  
  69. /* timer=1時，為1s左右的延時 */
  70. void display_time(unsigned int timer)      //指定時間掃描顯示
  71. {
  72.         unsigned char i;        
  73.         while(timer--)
  74.         {                
  75.                 i=50;                
  76.                 while(i--)
  77.                         display();
  78.         }
  79. }
  80.  
  81. void disp()
  82. {
  83.     for(i=0;i<32;i++)
  84.         date[i]=table1[i];//將"A"字數據複製到顯示緩存
  85.         display_time(2);        //顯示約2秒
  86.  
  87.     for(i=0;i<32;i++)
  88.         date[i]=table2[i];//將"B"字數據複製到顯示緩存
  89.         display_time(2);         //顯示約2秒
  90.  
  91.     for(i=0;i<32;i++)
  92.         date[i]=table3[i];//將"C"字數據複製到顯示緩存
  93.         display_time(2);         //顯示約2秒
  94.     for(i=0;i<32;i++)
  95.         date[i]=table4[i];//將"D"字數據複製到顯示緩存
  96.         display_time(2);         //顯示約2秒
  97. }
  98. void loop() 
  99. {        
  100.     disp();                
  101. }
  102.  
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https://ideone.com/Gb3Cwf
language:
C (gcc 8.3)
created:
12 years ago
visibility:
public

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