标题: 12864m C51单片机并行C程序 [打印本页]
作者: huxiao    时间: 2015-1-24 16:03
标题: 12864m C51单片机并行C程序
本人亲测，绝对没有问题，如果不对，请注意你的端口定义，而且数据口只能用P0，我用的是89S52，12M，祝大家好运！
  1. #include <regx52.h>
  2. #include <intrins.h>
  3. #include <string.h>
  4. #define uchar unsigned char       //自定义关键字
  5. #define BUSY_FLAG P0_7       //液晶模块忙标志
  6. #define MPU_RS_CH P2_7       //寄存器选择输入   RS
  7. #define MPU_RW_CH P2_6       //读写控制     RW
  8. #define MPU_ENABLE P2_5       //使能控制        E
  9. #define MPU_PS_CH P3_6       //串/并传输控制    PSB
  10. #define MPU_RESET P3_7       //液晶复位控制    RST
  11. #define LCD_DATA P0        //液晶数据口    P0
  12. #define LOW    0        //低电平
  13. #define HIGH   1        //高电平
  14. #define OFF    0        //逻辑关
  15. #define ON    1        //逻辑开
  16. //-----------------------------------------------
  17. //液晶模块指令集定义
  18. #define cClearDisplay 0x01      //清显示指令
  19. #define cEntryModeSet 0x06      //设置输入模式
  20. #define cDisplayOnCtrl 0x0c      //设置开显控制
  21. #define cFunctionSetB 0x30      //功能设定(基本指令)
  22. #define cFunctionSetE 0x34      //功能设定(扩充指令)
  23. //-----------------------------------------------
  24. void checkLcdBusy (void)
  25. {
  26. LCD_DATA = 0xff;
  27. MPU_RS_CH = LOW;
  28. MPU_RW_CH = HIGH;
  29. MPU_ENABLE = HIGH;
  30. while (BUSY_FLAG);
  31. MPU_ENABLE = LOW;
  32. }
  33. //===============================================
  34. void delayMs (uchar ms)
  35. {
  36. uchar i;
  37. while (--ms)
  38. for (i = 0; i < 125; i++);
  39. }
  40. //===============================================
  41. void delaySec (uchar sec)
  42. {
  43. uchar i;
  44. while (--sec)
  45. for (i = 0; i < 200; i++)
  46.    delayMs (6);
  47. }
  48. //===============================================
  49. void lcdWriteCommand (uchar Command)
  50. {
  51. checkLcdBusy();
  52. MPU_RS_CH = LOW;
  53. MPU_RW_CH = LOW;
  54. LCD_DATA = Command;
  55. MPU_ENABLE = HIGH;
  56. delayMs(1);
  57. MPU_ENABLE = LOW;
  58. }
  59. //===============================================
  60. void lcdClear (void)
  61. {
  62. lcdWriteCommand(cClearDisplay);
  63. }
  64. //===============================================
  65. void lcdInit (void)   //初始化LCD子程序
  66. {
  67. MPU_RESET = LOW;
  68. delayMs(40);
  69. MPU_RESET = HIGH;
  70. delayMs(1);
  71. MPU_PS_CH = HIGH;
  72.    lcdWriteCommand(cFunctionSetE);
  73. lcdWriteCommand(cFunctionSetB);
  74. lcdClear();
  75. lcdWriteCommand(cEntryModeSet);
  76. lcdWriteCommand(cDisplayOnCtrl);
  77. }
  78. //===============================================
  79. void lcdWriteData (uchar Data)
  80. {
  81. checkLcdBusy();
  82. MPU_RS_CH = HIGH;
  83. MPU_RW_CH = LOW;
  84. LCD_DATA = Data;
  85. MPU_ENABLE = HIGH;
  86. delayMs(1);
  87. MPU_ENABLE = LOW;
  88. }
  89. //===============================================
  90. void dispString (uchar X, Y, speed, uchar *msg)
  91. {
  92. if (X == 0)       X = 0x80;
  93. else if (X == 1) X = 0x90;
  94. else if (X == 2) X = 0x88;
  95. else if (X == 3) X = 0x98;
  96. Y = X + Y;
  97. lcdWriteCommand(Y);
  98. while (*msg)
  99. {
  100.    lcdWriteData(*msg++);
  101.    delayMs(speed);
  102. }
  103. }
  104. //===============================================
  105. void main (void)
  106. {
  107. lcdInit (); lcdClear();
  108. while(1)
  109. {
  110. dispString(0, 0, 100, "西安建筑科技大学"); delaySec(1);
  111. dispString(1, 0, 100, "雁塔路中段13号"); delaySec(1);
  112. dispString(2, 1, 100, "冶金工程学院");      delaySec(1);
  113. dispString(3, 1, 100, "材料加工工程"); delaySec(6);
  114. lcdClear();
  115. dispString(0, 1, 100, "单片机开发");          delaySec(1);
  116. dispString(1, 0, 100, "电子设备研究开发"); delaySec(1);
  117. dispString(2, 1, 100, "工业过程模拟"); delaySec(1);
  118. dispString(3, 0, 100, "结构有限元分析"); delaySec(6);
  119. lcdClear();
  120. dispString(0, 0, 100, "联系人:crasyboye");    delaySec(1);
  121. dispString(1, 0, 100, "电话:02982203875"); delaySec(1);
  122. dispString(2, 0, 100, "手机:13519198625"); delaySec(1);
  123. dispString(3, 1, 100, "共同学习共同进步");      delaySec(6);
  124. lcdClear();
  125. }
  126. }
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