C51 COMPILER V9.56.0.0   LCD                                                               04/08/2022 02:58:55 PAGE 1   


C51 COMPILER V9.56.0.0, COMPILATION OF MODULE LCD
OBJECT MODULE PLACED IN lcd.OBJ
COMPILER INVOKED BY: D:\Keil_v5\C51\BIN\C51.EXE lcd.c OPTIMIZE(8,SPEED) BROWSE DEBUG OBJECTEXTEND TABS(2)

line level    source

   1          #include  "lcd.h"
   2          
   3          
   4          void Read_Busy()           //忙检测函数，判断bit7是0，允许执行；1禁止
   5          {
   6   1          unsigned char sta;      //
   7   1          LCD1602_DB = 0xff;
   8   1          LCD1602_RS = 0;
   9   1          LCD1602_RW = 1;
  10   1          do
  11   1          {
  12   2              LCD1602_EN = 1;
  13   2              sta = LCD1602_DB;
  14   2              LCD1602_EN = 0;    //使能，用完就拉低，释放总线
  15   2          }while(sta & 0x80);
  16   1      }
  17          
  18          void Lcd1602_Write_Cmd(unsigned char cmd)     //写命令
  19          {
  20   1          Read_Busy();
  21   1          LCD1602_RS = 0;
  22   1          LCD1602_RW = 0;
  23   1          LCD1602_DB = cmd;
  24   1          LCD1602_EN = 1;
  25   1          LCD1602_EN = 0;    
  26   1      }
  27          
  28          void Lcd1602_Write_Data(unsigned char dat)   //写数据
  29          {
  30   1            Read_Busy();
  31   1            LCD1602_RS = 1;
  32   1            LCD1602_RW = 0;
  33   1            LCD1602_DB = dat;
  34   1            LCD1602_EN = 1;
  35   1            LCD1602_EN = 0;
  36   1      }
  37          
  38          void LcdSetCursor(unsigned char x,unsigned char y)  //坐标显示
  39          {
  40   1          unsigned char addr;
  41   1          if(y == 0)
  42   1              addr = 0x00 + x;
  43   1          else
  44   1              addr = 0x40 + x;
  45   1          
  46   1          Lcd1602_Write_Cmd(addr|0x80);
  47   1      }
  48          
  49          //按指定位置显示一个字符
  50          void DisplayOneChar(unsigned char X, unsigned char Y, unsigned char DData)
  51          {
  52   1        Y &= 0x1;
  53   1        X &= 0xF; //限制X不能大于15，Y不能大于1
  54   1        if (Y) X |= 0x40; //当要显示第二行时地址码+0x40;
  55   1        X |= 0x80; //算出指令码
C51 COMPILER V9.56.0.0   LCD                                                               04/08/2022 02:58:55 PAGE 2   

  56   1        Lcd1602_Write_Cmd(X); //发命令字
  57   1        Lcd1602_Write_Data(DData); //发数据
  58   1      }
  59          
  60          
  61          void LcdShowStr(unsigned char x,unsigned char y,unsigned char *str)     //显示字符串
  62          {
  63   1          LcdSetCursor(x,y);      //当前字符的坐标
  64   1          while(*str != '\0')
  65   1          {
  66   2              Lcd1602_Write_Data(*str++);
  67   2          }
  68   1      }
  69          
  70          void InitLcd1602()              //1602初始化
  71          {
  72   1          Lcd1602_Write_Cmd(0x38);    //打开，5*8,8位数据
  73   1          Lcd1602_Write_Cmd(0x0c);
  74   1          Lcd1602_Write_Cmd(0x06);
  75   1          Lcd1602_Write_Cmd(0x01);    //清屏   
  76   1      }


MODULE INFORMATION:   STATIC OVERLAYABLE
   CODE SIZE        =    157    ----
   CONSTANT SIZE    =   ----    ----
   XDATA SIZE       =   ----    ----
   PDATA SIZE       =   ----    ----
   DATA SIZE        =   ----       3
   IDATA SIZE       =   ----    ----
   BIT SIZE         =   ----    ----
END OF MODULE INFORMATION.


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