标题: C51单片机驱动MAX7219控制LED点阵滚动显示汉字程序 [打印本页]

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作者: oops64    时间: 2022-5-24 12:33
标题: C51单片机驱动MAX7219控制LED点阵滚动显示汉字程序
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

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作者: oops64    时间: 2022-5-24 12:37

1. #include <reg52.h>
   
2. #include <intrins.h>
   
3. 
   
4. #define u8 unsigned char
   
5. #define u16  unsigned int
   
6. 
   
7. #define DECODE_MODE  0x09
   
8. #define INTENSITY    0x0A
   
9. #define SCAN_LIMIT   0x0B
   
10. #define SHUT_DOWN    0x0C
    
11. #define DISPLAY_TEST 0x0F
    
12. 
    
13. #define BLOCKS 8
    
14. 
    
15. 
    
16. sbit MAX7219_CLK = P1^2;
    
17. sbit MAX7219_CS  = P1^1;
    
18. sbit MAX7219_DIN = P1^0;
    
19. 
    
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
     
103. 
     
104. 
     
105. };
     
106. 
     
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. }
     
115. 
     
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. }
     
128. 
     
129. 
     
130. 
     
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);
     
140. 
     
141. }
     
142.   MAX7219_CS = 1;
     
143. 
     
144. }
     
145. 
     
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. }
     
159. 
     
160. 
     
161. 
     
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. }
     
174. 
     
175. 
     
176. void main(void)
     
177. {
     
178. u16 i=0,j=0,t=0,n=0,m=0,f;
     
179.   Max7219_init();
     
180. 
     
181. while(1)
     
182.   {
     
183.         f=0;
     
184.     n = t / 8; // 第几个字
     
185.                 m=t%8;
     
186. 
     
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.                         }
     
198. 
     
199.                         Max7219_multiWrite1(j+1, val);
     
200.     }
     
201.                         t=(t+1)%(sizeof(bytes)/2);
     
202.                
     
203.                 delay(150);
     
204.         }
     
205. 
     
206.        
     
207.         }

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