1602.lst

1602液晶测试程序, RS EQU P3.7 RW EQU P3.6 E EQU P3.5

C51 COMPILER V6.12  1602                                                                   12/20/2005 18:42:24 PAGE 1   


C51 COMPILER V6.12, COMPILATION OF MODULE 1602
OBJECT MODULE PLACED IN .\1602.OBJ
COMPILER INVOKED BY: C:\Keil\C51\BIN\C51.EXE .\1602.C DEBUG OBJECTEXTEND

stmt level    source

   1          #define LCM_RW  P3_6 //定义引脚 
   2          #define LCM_RS  P3_7 
   3          #define LCM_E   P3_5 
   4          #define LCM_Data  P1 
   5          #define Busy    0x80 //用于检测LCM状态字中的Busy标识 
   6          
   7          #include <at89x51.h> 
   8          
   9          void WriteDataLCM(unsigned char WDLCM); 
  10          void WriteCommandLCM(unsigned char WCLCM,BuysC); 
  11          unsigned char ReadDataLCM(void); 
  12          unsigned char ReadStatusLCM(void); 
  13          void LCMInit(void); 
  14          void DisplayOneChar(unsigned char X, unsigned char Y, unsigned char DData); 
  15          void DisplayListChar(unsigned char X, unsigned char Y, unsigned char code *DData); 
  16          void Delay5Ms(void); 
  17          void Delay400Ms(void); 
  18          
  19          unsigned char code uctech[] = {"uctech"}; 
  20          unsigned char code net[] = {"uctech.icpcn.com"}; 
  21          
  22          void main(void) 
  23          { 
  24   1       Delay400Ms(); //启动等待，等LCM讲入工作状态 
  25   1       LCMInit(); //LCM初始化 
  26   1       Delay5Ms(); //延时片刻(可不要) 
  27   1      
  28   1       DisplayListChar(0, 5, uctech); 
  29   1       DisplayListChar(0, 0, net); 
  30   1       ReadDataLCM();//测试用句无意义 
  31   1       while(1); 
  32   1      } 
  33          
  34          //写数据 
  35          void WriteDataLCM(unsigned char WDLCM) 
  36          { 
  37   1       ReadStatusLCM(); //检测忙 
  38   1       LCM_Data = WDLCM; 
  39   1       LCM_RS = 1; 
  40   1       LCM_RW = 0; 
  41   1       LCM_E = 0; //若晶振速度太高可以在这后加小的延时 
  42   1       LCM_E = 0; //延时 
  43   1       LCM_E = 1; 
  44   1      } 
  45          
  46          //写指令 
  47          void WriteCommandLCM(unsigned char WCLCM,BuysC) //BuysC为0时忽略忙检测 
  48          { 
  49   1       if (BuysC) ReadStatusLCM(); //根据需要检测忙 
  50   1       LCM_Data = WCLCM; 
  51   1       LCM_RS = 0; 
  52   1       LCM_RW = 0;  
  53   1       LCM_E = 0; 
  54   1       LCM_E = 0; 
  55   1       LCM_E = 1;  
C51 COMPILER V6.12  1602                                                                   12/20/2005 18:42:24 PAGE 2   

  56   1      } 
  57          
  58          //读数据 
  59          unsigned char ReadDataLCM(void) 
  60          { 
  61   1       LCM_RS = 1;  
  62   1       LCM_RW = 1; 
  63   1       LCM_E = 0; 
  64   1       LCM_E = 0; 
  65   1       LCM_E = 1; 
  66   1       return(LCM_Data); 
  67   1      } 
  68          
  69          //读状态 
  70          unsigned char ReadStatusLCM(void) 
  71          { 
  72   1       LCM_Data = 0xFF;  
  73   1       LCM_RS = 0; 
  74   1       LCM_RW = 1; 
  75   1       LCM_E = 0; 
  76   1       LCM_E = 0; 
  77   1       LCM_E = 1; 
  78   1       while (LCM_Data & Busy); //检测忙信号 
  79   1       return(LCM_Data); 
  80   1      } 
  81          
  82          void LCMInit(void) //LCM初始化 
  83          { 
  84   1       LCM_Data = 0; 
  85   1       WriteCommandLCM(0x38,0); //三次显示模式设置，不检测忙信号 
  86   1       Delay5Ms();  
  87   1       WriteCommandLCM(0x38,0); 
  88   1       Delay5Ms();  
  89   1       WriteCommandLCM(0x38,0); 
  90   1       Delay5Ms();  
  91   1      
  92   1       WriteCommandLCM(0x38,1); //显示模式设置,开始要求每次检测忙信号 
  93   1       WriteCommandLCM(0x08,1); //关闭显示 
  94   1       WriteCommandLCM(0x01,1); //显示清屏 
  95   1       WriteCommandLCM(0x06,1); // 显示光标移动设置 
  96   1       WriteCommandLCM(0x0C,1); // 显示开及光标设置 
  97   1      } 
  98          
  99          //按指定位置显示一个字符 
 100          void DisplayOneChar(unsigned char X, unsigned char Y, unsigned char DData) 
 101          { 
 102   1       Y &= 0x1; 
 103   1       X &= 0xF; //限制X不能大于15，Y不能大于1 
 104   1       if (Y) X |= 0x40; //当要显示第二行时地址码+0x40; 
 105   1       X |= 0x80; // 算出指令码 
 106   1       WriteCommandLCM(X, 0); //这里不检测忙信号，发送地址码 
 107   1       WriteDataLCM(DData); 
 108   1      } 
 109          
 110          //按指定位置显示一串字符 
 111          void DisplayListChar(unsigned char X, unsigned char Y, unsigned char code *DData) 
 112          { 
 113   1       unsigned char ListLength; 
 114   1      
 115   1        ListLength = 0; 
 116   1       Y &= 0x1; 
 117   1       X &= 0xF; //限制X不能大于15，Y不能大于1 
C51 COMPILER V6.12  1602                                                                   12/20/2005 18:42:24 PAGE 3   

 118   1       while (DData[ListLength]>0x20) //若到达字串尾则退出 
 119   1        { 
 120   2         if (X <= 0xF) //X坐标应小于0xF 
 121   2          { 
 122   3           DisplayOneChar(X, Y, DData[ListLength]); //显示单个字符 
 123   3           ListLength++; 
 124   3           X++; 
 125   3          } 
 126   2        } 
 127   1      } 
 128          
 129          //5ms延时 
 130          void Delay5Ms(void) 
 131          { 
 132   1       unsigned int TempCyc = 5552; 
 133   1       while(TempCyc--); 
 134   1      } 
 135          
 136          //400ms延时 
 137          void Delay400Ms(void) 
 138          { 
 139   1       unsigned char TempCycA = 5; 
 140   1       unsigned int TempCycB; 
 141   1       while(TempCycA--) 
 142   1       { 
 143   2        TempCycB=7269; 
 144   2        while(TempCycB--); 
 145   2       }; 
 146   1      } 


MODULE INFORMATION:   STATIC OVERLAYABLE
   CODE SIZE        =    307    ----
   CONSTANT SIZE    =     24    ----
   XDATA SIZE       =   ----    ----
   PDATA SIZE       =   ----    ----
   DATA SIZE        =   ----       8
   IDATA SIZE       =   ----    ----
   BIT SIZE         =   ----    ----
END OF MODULE INFORMATION.


C51 COMPILATION COMPLETE.  0 WARNING(S),  0 ERROR(S)