1602.lst

1602液晶模块程序

C51 COMPILER V7.07   1602                                                                  07/23/2007 15:31:58 PAGE 1   


C51 COMPILER V7.07, 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          #include <Reg51.h>
   2          #define uchar unsigned char   
   3          #define uint unsigned int
   4          #define LCM_Data  P0 
   5          sbit LCM_RW=P1^3;  //定义LCD引脚
   6          sbit LCM_RS=P1^1;       
   7          sbit LCM_E=P1^2; 
   8          #define Busy    0x80  //用于检测LCM状态字中的Busy标识
   9          void delay(uint t);
  10          void delay400ms(void);
  11          void LCMreset(void);
  12          void DisplayOneChar(unsigned char X, unsigned char Y, unsigned char DData);
  13          void DisplayListChar(unsigned char X, unsigned char Y, unsigned char code *DData);
  14          void WriteDataLCM(unsigned char WDLCM);
  15          void WriteCommandLCM(unsigned char WCLCM,BuysC);
  16          
  17          unsigned char ReadDataLCM(void);
  18          unsigned char ReadStatusLCM(void);
  19          unsigned char code cdle_net[] = {"--cug--"};
  20          unsigned char code email[] = {"[e-mail]"};
  21          unsigned char code Cls[] = {"zou guo xiong"};
  22          void main(void)
  23          {
  24   1              unsigned char TempCyc;
  25   1      
  26   1              delay400ms(); //启动等待，等LCM讲入工作状态
  27   1              LCMreset(); //LCM初始化
  28   1              DisplayListChar(0, 0, cdle_net);
  29   1              DisplayListChar(0, 1, email);
  30   1              ReadDataLCM();//测试用句无意义
  31   1              for (TempCyc=0; TempCyc<10; TempCyc++)
  32   1                              delay400ms(); //延时
  33   1              DisplayListChar(0, 1, Cls);     
  34   1      }
  35          
  36          //写数据
  37          void WriteDataLCM(unsigned char WDLCM) 
  38          {
  39   1              ReadStatusLCM(); //检测忙
  40   1              LCM_Data=WDLCM;
  41   1              LCM_RS=1;
  42   1              LCM_RW=0;
  43   1              LCM_E=0; //若晶振速度太高可以在这后加小的延时
  44   1              LCM_E=0; //延时
  45   1              LCM_E=1;
  46   1      }
  47          
  48          //写指令
  49          void WriteCommandLCM(unsigned char WCLCM,BuysC) //BuysC为0时忽略忙检测
  50          {
  51   1              if (BuysC) ReadStatusLCM(); //根据需要检测忙
  52   1              LCM_Data = WCLCM;
  53   1              LCM_RS = 0;
  54   1              LCM_RW = 0;     
  55   1              LCM_E = 0;
C51 COMPILER V7.07   1602                                                                  07/23/2007 15:31:58 PAGE 2   

  56   1              LCM_E = 0;
  57   1              LCM_E = 1;      
  58   1      }
  59          
  60          //读数据
  61          unsigned char ReadDataLCM(void)
  62          {
  63   1              LCM_RS = 1; 
  64   1              LCM_RW = 1;
  65   1              LCM_E = 0;
  66   1              LCM_E = 0;
  67   1              LCM_E = 1;
  68   1              return(LCM_Data);
  69   1      }
  70          
  71          //读状态
  72          unsigned char ReadStatusLCM(void)
  73          {
  74   1              LCM_Data=0xFF; 
  75   1              LCM_RS=0;
  76   1              LCM_RW=1;
  77   1              LCM_E=0;
  78   1              LCM_E=0;
  79   1              LCM_E=1;
  80   1              while(LCM_Data & Busy); //检测忙信号
  81   1              return(LCM_Data);
  82   1      }
  83          
  84          void LCMreset(void) //LCM初始化
  85          {
  86   1              LCM_Data=0;
  87   1              WriteCommandLCM(0x38,0); //三次显示模式设置，不检测忙信号
  88   1              delay(5000); 
  89   1              WriteCommandLCM(0x38,0);
  90   1              delay(5000); 
  91   1              WriteCommandLCM(0x38,0);
  92   1              delay(5000);
  93   1      
  94   1              WriteCommandLCM(0x38,1); //显示模式设置,开始要求每次检测忙信号
  95   1              WriteCommandLCM(0x08,1); //关闭显示
  96   1              WriteCommandLCM(0x01,1); //显示清屏
  97   1              WriteCommandLCM(0x06,1); // 显示光标移动设置
  98   1              WriteCommandLCM(0x0F,1); // 显示开及光标设置
  99   1      }
 100          
 101          //按指定位置显示一个字符
 102          void DisplayOneChar(unsigned char X, unsigned char Y, unsigned char DData)
 103          {
 104   1              Y &= 0x1;
 105   1              X &= 0xF; //限制X不能大于15，Y不能大于1
 106   1              if (Y) X |= 0x40; //当要显示第二行时地址码+0x40;
 107   1              X |= 0x80; //算出指令码
 108   1              WriteCommandLCM(X, 1); //发命令字
 109   1              WriteDataLCM(DData); //发数据
 110   1      }
 111          
 112          //按指定位置显示一串字符
 113          void DisplayListChar(unsigned char X, unsigned char Y, unsigned char code *DData)
 114          {
 115   1              unsigned char ListLength;
 116   1      
 117   1        ListLength = 0;
C51 COMPILER V7.07   1602                                                                  07/23/2007 15:31:58 PAGE 3   

 118   1              Y &= 0x1;
 119   1              X &= 0xF; //限制X不能大于15，Y不能大于1
 120   1              while (DData[ListLength]>0x20) //若到达字串尾则退出
 121   1                      {
 122   2                              if (X <= 0xF) //X坐标应小于0xF
 123   2                                      {
 124   3                                              DisplayOneChar(X, Y, DData[ListLength]); //显示单个字符
 125   3                                              ListLength++;
 126   3                                              X++;
 127   3                                      }
 128   2                      }
 129   1      }
 130          
 131          //延时
 132          void delay(uint t)                    
 133          {uint i;
 134   1       for (i=0;i<t;i++);
 135   1      }
 136          void delay400ms(void)
 137          {   delay(50000);
 138   1              delay(50000);
 139   1              delay(50000);
 140   1              delay(50000);
 141   1              delay(50000);
 142   1              delay(50000);
 143   1              delay(50000);
 144   1              delay(50000);
 145   1              }


MODULE INFORMATION:   STATIC OVERLAYABLE
   CODE SIZE        =    342    ----
   CONSTANT SIZE    =     39    ----
   XDATA SIZE       =   ----    ----
   PDATA SIZE       =   ----    ----
   DATA SIZE        =   ----       9
   IDATA SIZE       =   ----    ----
   BIT SIZE         =   ----    ----
END OF MODULE INFORMATION.


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