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C51单片机驱动MAX7219控制LED点阵滚动显示汉字程序

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ID:1026000 发表于 2022-5-24 12:33 | 显示全部楼层 |阅读模式
利用多个8*8点阵模块设计并制作条形显示屏，滚动显汉字，现在写出了C语言，但是老师要求汇编
图片1.png

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ID:1026000 发表于 2022-5-24 12:37 | 显示全部楼层
  1. #include <reg52.h>
  2. #include <intrins.h>

  4. #define u8 unsigned char
  5. #define u16  unsigned int

  7. #define DECODE_MODE  0x09
  8. #define INTENSITY    0x0A
  9. #define SCAN_LIMIT   0x0B
  10. #define SHUT_DOWN    0x0C
  11. #define DISPLAY_TEST 0x0F

  13. #define BLOCKS 8


  16. sbit MAX7219_CLK = P1^2;
  17. sbit MAX7219_CS  = P1^1;
  18. sbit MAX7219_DIN = P1^0;

  20. u8 code bytes[] = {
  21.        
  22. 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
  23. 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
  24. 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
  25. 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
  26. /* 热[0xC8C8]   16x16 */
  27. 0x08,0x40,0x08,0x40,0x08,0x48,0x7F,0xFC,0x08,0x48,0x0A,0x48,0x1C,0xC8,0x68,0x48,
  28. 0x08,0xA8,0x08,0x8A,0x29,0x0A,0x12,0x04,0x00,0x00,0x48,0x88,0x44,0x46,0x84,0x42,
  29. /* GB2312 16x16点阵字库*/
  30. /* 烈[0xC1D2]   16x16 */
  31. 0x01,0x04,0x7F,0x84,0x10,0x24,0x10,0x24,0x1F,0x24,0x21,0x24,0x21,0x24,0x52,0x24,
  32. 0x0C,0x24,0x08,0x04,0x30,0x0C,0x40,0x00,0x28,0x90,0x24,0x4C,0x44,0x46,0x80,0x02,
  33. /* GB2312 16x16点阵字库*/
  34. /* 祝[0xD7A3]   16x16 */
  35. 0x20,0x08,0x13,0xFC,0x12,0x08,0x02,0x08,0xFE,0x08,0x0A,0x08,0x12,0x08,0x3B,0xF8,
  36. 0x56,0xA8,0x90,0xA0,0x10,0xA0,0x11,0x20,0x11,0x22,0x12,0x22,0x14,0x1E,0x18,0x00,
  37. /* GB2312 16x16点阵字库*/
  38. /* 贺[0xBAD8]   16x16 */
  39. 0x10,0x00,0x10,0x04,0x7F,0x7E,0x11,0x44,0x11,0x44,0x25,0x7C,0x42,0x10,0x9F,0xF8,
  40. 0x10,0x10,0x11,0x10,0x11,0x10,0x11,0x10,0x11,0x10,0x02,0xC0,0x0C,0x30,0x30,0x08,
  41. /* GB2312 16x16点阵字库*/
  42. /* 中[0xD6D0]   16x16 */
  43. 0x01,0x00,0x01,0x00,0x01,0x04,0x7F,0xFE,0x41,0x04,0x41,0x04,0x41,0x04,0x41,0x04,
  44. 0x7F,0xFC,0x41,0x04,0x01,0x00,0x01,0x00,0x01,0x00,0x01,0x00,0x01,0x00,0x01,0x00,
  45. /* GB2312 16x16点阵字库*/
  46. /* 南[0xC4CF]   16x16 */
  47. 0x01,0x00,0x01,0x04,0xFF,0xFE,0x01,0x00,0x01,0x04,0x7F,0xFE,0x48,0x24,0x44,0x44,
  48. 0x5F,0xF4,0x41,0x04,0x41,0x04,0x5F,0xF4,0x41,0x04,0x41,0x04,0x41,0x14,0x40,0x08,
  49. /* GB2312 16x16点阵字库*/
  50. /* 大[0xB4F3]   16x16 */
  51. 0x01,0x00,0x01,0x00,0x01,0x00,0x01,0x00,0x01,0x04,0xFF,0xFE,0x01,0x00,0x02,0x80,
  52. 0x02,0x80,0x02,0x40,0x04,0x40,0x04,0x20,0x08,0x10,0x10,0x0E,0x60,0x04,0x00,0x00,
  53. /* GB2312 16x16点阵字库*/
  54. /* 学[0xD1A7]   16x16 */
  55. 0x22,0x08,0x11,0x08,0x11,0x10,0x00,0x20,0x7F,0xFE,0x40,0x02,0x80,0x04,0x1F,0xE0,
  56. 0x00,0x40,0x01,0x84,0xFF,0xFE,0x01,0x00,0x01,0x00,0x01,0x00,0x05,0x00,0x02,0x00,
  57. /* GB2312 16x16点阵字库*/
  58. /* 物[0xCEEF]   16x16 */
  59. 0x11,0x00,0x11,0x00,0x51,0x00,0x51,0x04,0x7B,0xFE,0x54,0xA4,0x90,0xA4,0x1C,0xA4,
  60. 0x31,0x24,0xD1,0x44,0x12,0x44,0x12,0x44,0x14,0x84,0x10,0x84,0x11,0x28,0x10,0x10,
  61. /* GB2312 16x16点阵字库*/
  62. /* 理[0xC0ED]   16x16 */
  63. 0x00,0x08,0x13,0xFC,0xFA,0x48,0x22,0x48,0x23,0xF8,0x22,0x48,0xFA,0x48,0x23,0xF8,
  64. 0x20,0x40,0x20,0x50,0x23,0xF8,0x3C,0x40,0xE0,0x40,0x40,0x44,0x0F,0xFE,0x00,0x00,
  65. /* GB2312 16x16点阵字库*/
  66. /* 与[0xD3EB]   16x16 */
  67. 0x10,0x00,0x10,0x00,0x10,0x08,0x1F,0xFC,0x10,0x00,0x10,0x00,0x10,0x08,0x1F,0xFC,
  68. 0x00,0x08,0x00,0x08,0x00,0x48,0xFF,0xE8,0x00,0x08,0x00,0x08,0x00,0x50,0x00,0x20,
  69. /* GB2312 16x16点阵字库*/
  70. /* 电[0xB5E7]   16x16 */
  71. 0x02,0x00,0x02,0x00,0x02,0x10,0x7F,0xF8,0x42,0x10,0x42,0x10,0x7F,0xF0,0x42,0x10,
  72. 0x42,0x10,0x7F,0xF0,0x42,0x10,0x02,0x00,0x02,0x04,0x02,0x04,0x01,0xFC,0x00,0x00,
  73. /* GB2312 16x16点阵字库*/
  74. /* 子[0xD7D3]   16x16 */
  75. 0x00,0x00,0x3F,0xF0,0x00,0x10,0x00,0x20,0x00,0x40,0x01,0x80,0x01,0x04,0xFF,0xFE,
  76. 0x01,0x00,0x01,0x00,0x01,0x00,0x01,0x00,0x01,0x00,0x01,0x00,0x05,0x00,0x02,0x00,
  77. /* GB2312 16x16点阵字库*/
  78. /* 学[0xD1A7]   16x16 */
  79. 0x22,0x08,0x11,0x08,0x11,0x10,0x00,0x20,0x7F,0xFE,0x40,0x02,0x80,0x04,0x1F,0xE0,
  80. 0x00,0x40,0x01,0x84,0xFF,0xFE,0x01,0x00,0x01,0x00,0x01,0x00,0x05,0x00,0x02,0x00,
  81. /* 院[0xD4BA]   16x16 */
  82. 0x00,0x80,0x78,0x40,0x4F,0xFE,0x54,0x02,0x58,0x14,0x63,0xF8,0x50,0x00,0x48,0x08,
  83. 0x4F,0xFC,0x48,0xA0,0x68,0xA0,0x50,0xA0,0x41,0x22,0x41,0x22,0x42,0x1E,0x4C,0x00,
  84. /* GB2312 16x16点阵字库*/
  85. /* 成[0xB3C9]   16x16 */
  86. 0x00,0x80,0x00,0xA0,0x00,0x90,0x3F,0xFC,0x20,0x80,0x20,0x80,0x20,0x84,0x3E,0x44,
  87. 0x22,0x48,0x22,0x48,0x22,0x30,0x2A,0x20,0x24,0x62,0x40,0x92,0x81,0x0A,0x00,0x06,
  88. /* GB2312 16x16点阵字库*/
  89. /* 立[0xC1A2]   16x16 */
  90. 0x02,0x00,0x01,0x00,0x01,0x00,0x00,0x08,0x7F,0xFC,0x00,0x00,0x00,0x10,0x10,0x10,
  91. 0x08,0x20,0x08,0x20,0x04,0x40,0x04,0x40,0x04,0x80,0x00,0x04,0xFF,0xFE,0x00,0x00,
  92. /* 字串 20   16x16  */
  93. 0x00,0x00,0x00,0x00,0x7C,0x7C,0xC6,0xC6,0x06,0xC6,0x0C,0xCE,0x18,0xD6,0x30,0xD6,
  94. 0x60,0xE6,0xC0,0xC6,0xC6,0xC6,0xFE,0x7C,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
  95. /* GB2312 16x16点阵字库*/
  96. /* 周[0xD6DC]   16x16 */
  97. 0x00,0x08,0x3F,0xFC,0x21,0x08,0x21,0x48,0x2F,0xE8,0x21,0x08,0x21,0x28,0x3F,0xF8,
  98. 0x20,0x48,0x27,0xE8,0x24,0x48,0x24,0x48,0x24,0x48,0x47,0xC8,0x84,0x28,0x00,0x10,
  99. /* GB2312 16x16点阵字库*/
  100. /* 年[0xC4EA]   16x16 */
  101. 0x08,0x00,0x08,0x08,0x1F,0xFC,0x11,0x00,0x21,0x00,0x41,0x10,0x1F,0xF8,0x11,0x00,
  102. 0x11,0x00,0x11,0x04,0xFF,0xFE,0x01,0x00,0x01,0x00,0x01,0x00,0x01,0x00,0x01,0x00


  105. };

  107. u8 val[8];
  108. u8 character_len = sizeof(bytes) / 8;
  109. void delay(u16 x)
  110. {
  111.   u16 i,j;
  112.   for(i = 0; i < x; i++)
  113.     for(j = 0;j < 112; j++);
  114. }

  116. void Max7219_writeByte(u8 dat)
  117. {
  118.   u8 i;
  119.   MAX7219_CS = 0;
  120.   for(i = 8; i >= 1; i--)
  121.   {
  122.     MAX7219_CLK = 0;
  123.     MAX7219_DIN = dat & 0x80; // &10000000, 取最高位
  124.     dat = dat << 1;
  125.     MAX7219_CLK = 1;
  126.   }
  127. }



  131. void Max7219_singeWrite(u8 index, u8 addr, u8 dat)
  132. {
  133.   MAX7219_CS = 0;
  134.   Max7219_writeByte(addr);
  135.   Max7219_writeByte(dat);
  136. while(index--)
  137. {
  138. Max7219_writeByte(0x00);
  139. Max7219_writeByte(0x00);

  141. }
  142.   MAX7219_CS = 1;

  144. }

  146. void Max7219_multiWrite1(u8 addr, u8* dat)
  147. {
  148. u16 t=8;
  149.         MAX7219_CS = 0;
  150.   while(t--)
  151.   {
  152.                
  153.     Max7219_writeByte(addr);
  154.     Max7219_writeByte         (*dat++);
  155.                
  156.   }
  157.   MAX7219_CS = 1;
  158. }



  162. void Max7219_init(void)
  163. {
  164.   u8 i;
  165.   for (i = 0; i < BLOCKS; i++)
  166.   {
  167.     Max7219_singeWrite(i, SHUT_DOWN,   0x01);  // 0x00:shutdown, 0x01:normal
  168.     Max7219_singeWrite(i, DECODE_MODE, 0x00);  // No decode
  169.     Max7219_singeWrite(i, INTENSITY,   0x03);  // 0x00:min, 0x0F:max
  170.     Max7219_singeWrite(i, SCAN_LIMIT,  0x07);  // Display 8 digits
  171.     Max7219_singeWrite(i, DISPLAY_TEST, 0x00); // 0x00:normal, 0x01:test mode
  172.   }
  173. }


  176. void main(void)
  177. {
  178. u16 i=0,j=0,t=0,n=0,m=0,f;
  179.   Max7219_init();

  181. while(1)
  182.   {
  183.         f=0;
  184.     n = t / 8; // 第几个字
  185.                 m=t%8;

  187.     for(j=0;j<8;j++)
  188.                 {
  189.                          for(i=0;i<4;i++)
  190.                         {
  191.                                 f=(n+i)%(character_len/2);
  192.                                 val[i]=bytes[2*j+f/2*32+f%2]<<m;
  193.                                         val[i+4]=bytes[2*j+f/2*32+f%2+16]<<m;
  194.                                 f=(n+i+1)%(character_len/2);
  195.                                 val[i]|=bytes[2*j+f/2*32+f%2]>>8-m;
  196.                                 val[i+4]|=bytes[2*j+f/2*32+f%2+16]>>8-m;
  197.                         }

  199.                         Max7219_multiWrite1(j+1, val);
  200.     }
  201.                         t=(t+1)%(sizeof(bytes)/2);
  202.                
  203.                 delay(150);
  204.         }

  206.        
  207.         }
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