lcd1602.lst

C51操作5767收音机芯片(内置杭州的几个台)

C51 COMPILER V7.09   LCD1602                                                               07/05/2007 19:59:40 PAGE 1   


C51 COMPILER V7.09, COMPILATION OF MODULE LCD1602
OBJECT MODULE PLACED IN LCD1602.obj
COMPILER INVOKED BY: D:\A\KEIL\C51\BIN\C51.EXE LCD1602\LCD1602.c BROWSE DEBUG OBJECTEXTEND PRINT(.\LCD1602.lst) OBJECT(L
                    -CD1602.obj)

line level    source

   1          #include "LCD1602.h"
   2          
   3          
   4          #define BUSYFLAG 0x80 //用于检测LCM状态字中的Busy标识
   5          
   6          
   7          
   8          static void short_delay(unsigned int i)
   9          {
  10   1              while (i>0) i--;
  11   1      }
  12          
  13          
  14          void ReadBusyLCM(void)
  15          {       // 测试LCD忙碌状态 直到忙碌状态结束
  16   1              bit result;
  17   1              LCM_Data |= BUSYFLAG; //D7(BF) 1-正在执行内部操作 0-可接收指令
  18   1              do
  19   1              {
  20   2                      LCM_RS = 0;
  21   2                      LCM_RW = 1;
  22   2                      LCM_E = 1;
  23   2                      result = (bit)(LCM_Data & 0x80);////
  24   2                      LCM_E = 0;
  25   2              }while (result == 1);
  26   1      }
  27          
  28          
  29          //写数据
  30          void WriteDataLCM(unsigned char WDLCM)
  31          {
  32   1              ReadBusyLCM(); //检测忙
  33   1              LCM_Data = WDLCM;
  34   1              LCM_RS = 1;
  35   1              LCM_RW = 0;
  36   1              LCM_E = 1;
  37   1              LCM_E = 0; //若晶振速度太高可以在这后加小的延时
  38   1              short_delay(250);
  39   1      //      short_delay(250);
  40   1      }
  41          
  42          
  43          //写指令
  44          void WriteCommandLCM(unsigned char WCLCM,unsigned char BusyC) //BusyC为0时忽略忙检测
  45          {
  46   1              if (BusyC) ReadBusyLCM(); //根据需要检测忙
  47   1              LCM_Data = WCLCM;
  48   1              LCM_RS = 0;
  49   1              LCM_RW = 0; 
  50   1              LCM_E = 1; 
  51   1              LCM_E = 0;
  52   1              short_delay(250);
  53   1      }
  54          
C51 COMPILER V7.09   LCD1602                                                               07/05/2007 19:59:40 PAGE 2   

  55          
  56          void LCMInit(void) //LCM初始化
  57          {
  58   1              LCM_E = 0;
  59   1              WriteCommandLCM(0x38,0); //三次显示模式设置，不检测忙信号
  60   1              short_delay(250);
  61   1              WriteCommandLCM(0x38,0);
  62   1              short_delay(250);
  63   1              WriteCommandLCM(0x38,0);
  64   1              WriteCommandLCM(0x38,1); //显示模式设置,开始要求每次检测忙信号
  65   1              WriteCommandLCM(0x08,1); //关闭显示
  66   1              WriteCommandLCM(0x01,1); //显示清屏
  67   1              WriteCommandLCM(0x06,1); // 显示光标移动设置
  68   1              WriteCommandLCM(0x0C,1); // 显示开及光标设置
  69   1              short_delay(250);
  70   1      }
  71          
  72          
  73          //按指定位置显示一个字符
  74          void DisplayOneChar(unsigned char X, unsigned char Y, unsigned char DData)
  75          {
  76   1              Y &= 0x1;
  77   1              X &= 0xF; //限制X不能大于15，Y不能大于1
  78   1              if (Y) X |= 0x40; //当要显示第二行时地址码 0x40;
  79   1              X |= 0x80; // 算出指令码
  80   1              WriteCommandLCM(X, 1); //这里不检测忙信号，发送地址码
  81   1              WriteDataLCM(DData);
  82   1      }
  83          
  84          
  85          //按指定位置显示一串字符
  86          void DisplayListChar_code(unsigned char X, unsigned char Y, unsigned char code *DData)
  87          {
  88   1              DisplayOneChar(X,Y,*DData);
  89   1              while((*(++DData))>0x20 && ++X<=0xf)
  90   1              {
  91   2                      WriteDataLCM(*DData);
  92   2              }
  93   1      }
  94          
  95          void DisplayListChar(unsigned char X, unsigned char Y, unsigned char  *DData)
  96          {
  97   1              DisplayOneChar(X,Y,*DData);
  98   1              while((*(++DData))>0x20 && ++X<=0xf)
  99   1              {
 100   2                      WriteDataLCM(*DData);
 101   2              }
 102   1      }
 103          
 104          
 105          #ifdef ReadDataLCM_ENABLE
 106                  //读数据
 107                  unsigned char ReadDataLCM(void)
 108                  {
 109   1                      LCM_RS = 1; 
 110   1                      LCM_RW = 1;
 111   1                      LCM_E = 1;
 112   1                      LCM_E = 0;
 113   1                      short_delay(250);
 114   1                      return(LCM_Data);
 115   1              }
 116          #endif
C51 COMPILER V7.09   LCD1602                                                               07/05/2007 19:59:40 PAGE 3   

 117          
 118          
 119          


MODULE INFORMATION:   STATIC OVERLAYABLE
   CODE SIZE        =    293    ----
   CONSTANT SIZE    =   ----    ----
   XDATA SIZE       =   ----    ----
   PDATA SIZE       =   ----    ----
   DATA SIZE        =   ----       6
   IDATA SIZE       =   ----    ----
   BIT SIZE         =   ----       1
END OF MODULE INFORMATION.


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