sramtestc.lst

16x2字符液晶调试程序

C51 COMPILER V7.06   SRAMTESTC                                                             06/27/2007 20:20:03 PAGE 1   


C51 COMPILER V7.06, COMPILATION OF MODULE SRAMTESTC
OBJECT MODULE PLACED IN SRAMTESTC.OBJ
COMPILER INVOKED BY: C:\Program Files\keil\C51\BIN\C51.EXE SRAMTESTC.C BROWSE DEBUG OBJECTEXTEND

stmt level    source

   1          #include <reg51.h> 
   2          #include <intrins.h>
   3          
   4          #define uchar unsigned char
   5          #define nop() _nop_()
   6          #define LCM_Data P0 
   7          #define Busy    0x80  //用于检测LCM状态字中的Busy标识
   8          sbit LCM_RW=P1^3;  //定义LCD引脚
   9          sbit LCM_RS=P1^1; 
  10          sbit LCM_E=P1^2;
  11          
  12          uchar code cdle_net[] = {"--xsgylyzhb--"};
  13          uchar code email[] = {"[e-mail]"};
  14          
  15          //5ms延时
  16          void Delay5Ms(void)
  17          {
  18   1              unsigned int TempCyc = 5552;
  19   1              while(TempCyc--);
  20   1      }
  21          
  22          //400ms延时
  23          void Delay400Ms(void)
  24          {
  25   1              unsigned char TempCycA = 5;
  26   1              unsigned int TempCycB;
  27   1              while(TempCycA--)
  28   1                      {
  29   2                              TempCycB=7269;
  30   2                              while(TempCycB--);
  31   2                      };
  32   1      }
  33          //读状态
  34          unsigned char ReadStatusLCM(void)
  35          {
  36   1              LCM_Data=0xFF; 
  37   1              LCM_RS=0;
  38   1              LCM_RW=1;
  39   1              LCM_E=0;
  40   1              LCM_E=0;
  41   1              LCM_E=1;
  42   1              while(LCM_Data & Busy); //检测忙信号
  43   1              return(LCM_Data);
  44   1      }
  45          
  46          //写数据
  47          void WriteDataLCM(unsigned char WDLCM) 
  48          {
  49   1              ReadStatusLCM(); //检测忙
  50   1              LCM_Data=WDLCM;
  51   1              LCM_RS=1;
  52   1              LCM_RW=0;
  53   1              LCM_E=0; //
  54   1              LCM_E=0; //延时
  55   1              LCM_E=1;
C51 COMPILER V7.06   SRAMTESTC                                                             06/27/2007 20:20:03 PAGE 2   

  56   1      }
  57          
  58          //写指令
  59          void WriteCommandLCM(unsigned char WCLCM,BuysC) //BuysC为0时忽略忙检测
  60          {
  61   1              if (BuysC) ReadStatusLCM(); //根据需要检测忙
  62   1              LCM_Data = WCLCM;
  63   1              LCM_RS = 0;
  64   1              LCM_RW = 0;     
  65   1              LCM_E = 0;
  66   1              LCM_E = 0;
  67   1              LCM_E = 1;      
  68   1      }
  69          
  70          //按指定位置显示一个字符
  71          void DisplayOneChar(unsigned char X, unsigned char Y, unsigned char DData)
  72          {
  73   1              Y &= 0x1;
  74   1              X &= 0xF; //限制X不能大于15，Y不能大于1
  75   1              if (Y) X |= 0x40; //当要显示第二行时地址码+0x40;
  76   1              X |= 0x80; //算出指令码
  77   1              WriteCommandLCM(X, 1); //发命令字
  78   1              WriteDataLCM(DData); //发数据
  79   1      }
  80          
  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(0x0F,1); // 显示开及光标设置
  97   1      }
  98          
  99          
 100          //按指定位置显示一串字符
 101          void DisplayListChar(unsigned char X, unsigned char Y, unsigned char code *DData)
 102          {
 103   1              unsigned char ListLength;
 104   1      
 105   1          ListLength = 0;
 106   1              Y &= 0x1;
 107   1              X &= 0xF; //限制X不能大于15，Y不能大于1
 108   1              while (DData[ListLength]>0x20) //若到达字串尾则退出
 109   1                      {
 110   2                              if (X <= 0xF) //X坐标应小于0xF
 111   2                                      {
 112   3                                              DisplayOneChar(X, Y, DData[ListLength]); //显示单个字符
 113   3                                              ListLength++;
 114   3                                              X++;
 115   3                                      }
 116   2                      }
 117   1      }
C51 COMPILER V7.06   SRAMTESTC                                                             06/27/2007 20:20:03 PAGE 3   

 118          
 119          
 120          void main()
 121          {  
 122   1         Delay400Ms(); //启动等待，等LCM讲入工作状态
 123   1         LCMInit(); //LCM初始化    
 124   1         DisplayListChar(0, 0, cdle_net);
 125   1         DisplayListChar(0, 1, email);  
 126   1         while(1);
 127   1      }


MODULE INFORMATION:   STATIC OVERLAYABLE
   CODE SIZE        =    261    ----
   CONSTANT SIZE    =     29    ----
   XDATA SIZE       =   ----    ----
   PDATA SIZE       =   ----    ----
   DATA SIZE        =   ----       3
   IDATA SIZE       =   ----    ----
   BIT SIZE         =   ----    ----
END OF MODULE INFORMATION.


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