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pcDuino连结16 x 2 LCD屏 Shield

树老大 发表于 2013-5-16 22:42:58 | 显示全部楼层 |阅读模式
http://player.youku.com/player.php/sid/XNTIzNjE2NjA4/v.swf
360截图20130516223900128.jpg
  1. #include "core.h"

  3. #define RS 8
  4. #define EN 9
  5. #define backlight 10
  6. #define RS_L digitalWrite(RS,LOW)
  7. #define RS_H digitalWrite(RS,HIGH)
  8. #define EN_L digitalWrite(EN,LOW)
  9. #define EN_H digitalWrite(EN,HIGH)
  10. int DB[] = {7,6,5,4};
  11. /********************************************************************/
  12. void write_command(int command)
  13. {
  14. int i,temp;
  15. RS_L;
  16. EN_L;
  17. temp=command & 0xf0;
  18. for (i=0; i < 4; i++)
  19. {
  20. if(temp&0x80)
  21. digitalWrite(DB[i],HIGH);
  22. else digitalWrite(DB[i],LOW);
  23. temp <<= 1;
  24. }
  25. EN_H;
  26. delayMicroseconds(1);
  27. EN_L;
  28. temp=(command & 0x0f)<<4;
  29. for (i=0; i < 4; i++)
  30. {
  31. if(temp&0x80)
  32. digitalWrite(DB[i],HIGH);
  33. else digitalWrite(DB[i],LOW);
  34. temp <<= 1;
  35. }
  36. EN_H;
  37. delayMicroseconds(1);
  38. EN_L;
  39. }

  41. /********************************************************************/
  42. void write_data(int dat)
  43. {
  44. int i=0,temp;
  45. RS_H;
  46. EN_L;
  47. temp=dat & 0xf0;
  48. for (i=0; i < 4; i++)
  49. {
  50. if(temp&0x80)
  51. digitalWrite(DB[i],HIGH);
  52. else digitalWrite(DB[i],LOW);
  53. temp <<= 1;
  54. }
  55. EN_H;
  56. delayMicroseconds(1);
  57. EN_L;
  58. temp=(dat & 0x0f)<<4;
  59. for (i=0; i < 4; i++)
  60. {
  61. if(temp&0x80)
  62. digitalWrite(DB[i],HIGH);
  63. else digitalWrite(DB[i],LOW);
  64. temp <<= 1;

  66. }
  67. EN_H;
  68. delayMicroseconds(1);
  69. EN_L;
  70. }
  71. /********************************************************************/
  72. void LCD_write_char( int x,int y,int dat)
  73. {
  74. int address;
  75. if (x ==0) address = 0x80 + y;
  76. else address = 0xC0 + y;
  77. write_command(address);
  78. write_data(dat);
  79. delayMicroseconds(10);
  80. }
  81. /********************************************************************/
  82. void lcd1602_init()
  83. {
  84. int i = 0;
  85. pinMode(RS,OUTPUT);
  86. pinMode(EN,OUTPUT);
  87. pinMode(backlight,OUTPUT);
  88. digitalWrite(backlight,HIGH);
  89. for (i=0; i < 4; i++)
  90. {
  91. pinMode(DB[i],OUTPUT);
  92. }
  93. delay(100);
  94. write_command(0x28);
  95. delay(50);
  96. write_command(0x06);
  97. delay(50);
  98. write_command(0x0c);
  99. delay(50);
  100. write_command(0x80);
  101. delay(50);
  102. write_command(0x01);
  103. delay(100);
  104. }
  105. /********************************************************************/
  106. void setup (void)
  107. {
  108. lcd1602_init();
  109. }
  110. /********************************************************************/
  111. void loop (void)
  112. {
  113. write_command(0x02);
  114. delay(10);
  115. LCD_write_char(0,2,'W');
  116. LCD_write_char(0,3,'e');
  117. LCD_write_char(0,4,'l');
  118. LCD_write_char(0,5,'c');
  119. LCD_write_char(0,6,'o');
  120. LCD_write_char(0,7,'m');
  121. LCD_write_char(0,8,'e');

  123. LCD_write_char(0,10,'t');
  124. LCD_write_char(0,11,'o');

  126. LCD_write_char(1,4,'p');
  127. LCD_write_char(1,5,'c');
  128. LCD_write_char(1,6,'D');
  129. LCD_write_char(1,7,'u');
  130. LCD_write_char(1,8,'i');
  131. LCD_write_char(1,9,'n');
  132. LCD_write_char(1,10,'o');
  133. while(1);
  134. }
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joejoe 发表于 2013-12-15 13:35:31 | 显示全部楼层
请问楼主这块1602LCD Keypad怎么和万博网页版登陆页派相连
mouselt 发表于 2014-4-9 19:43:36 | 显示全部楼层
感谢楼主分享
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