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標題: LCD1602顯示漢字年月日 [打印本頁]

作者: Lukezhao 時間: 2016-4-13 19:43
標題: LCD1602顯示漢字年月日
//***************************************************************************************
//硬件連接：1602VDD接5V，VO接地，BL1接5V，BL2接地，8根數據線接P0
//口，RS RW E分別接P2.0、P2.1、P.4口
//***************************************************************************************
#include <REG52.h>
#include <string.h>

#define Busy 0x80 //用于檢測LCM狀態字中的Busy標識
#define LCM_Data P0
sbit LCM_RS = P3^7;          //寄存器選擇
sbit LCM_RW = P3^6;       //讀/寫控制
sbit LCM_E = P3^5;          //讀/寫使能
int i,j;

//自定義字符列表
//=====================================================================================
unsigned char character0[8] = {0x08,0x0f,0x12,0x0f,0x0a,0x1f,0x02,0x02}, //年
                  character1[8] = {0x0f,0x09,0x0f,0x09,0x0f,0x09,0x0b,0x11}, //月
            character2[8] = {0x0f,0x09,0x09,0x09,0x0f,0x09,0x09,0x0f}, //日
                        characterN[8] = {0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00}; //日
//=====================================================================================

//=====================================================================================
//延時程序
//=====================================================================================
void Delay5Ms(void)
{
      unsigned long int TempCyc = 5552;
      while(TempCyc--);
}
//========================================第5頁========================================
void Delay400Ms(void)
{
      unsigned char TempCycA = 5;
      unsigned int TempCycB;
      while(TempCycA--)
      {
            TempCycB=7269;
            while(TempCycB--);
      };
}

//=====================================================================================
//讀寫子程序
//=====================================================================================
//讀數據
unsigned char ReadDataLCM(void)
{
      LCM_RS = 1;
      LCM_RW = 1;
      LCM_E = 1;
      LCM_E = 0;
      for(i=0;i<100;i++);
            LCM_E = 1;
      return(LCM_Data);
}
//讀狀態
unsigned char ReadStatusLCM(void)
{
      LCM_Data = 0xFF;
      LCM_RS = 0;
      LCM_RW = 1;
      LCM_E = 1;
      LCM_E = 0;
      for(i=0;i<100;i++);
            LCM_E = 1;
      while (LCM_Data & Busy); //檢測忙信號
      return(LCM_Data);
}
//寫數據
//========================================第6頁========================================
void WriteDataLCM(unsigned char WDLCM)
{
      ReadStatusLCM(); //檢測忙
      LCM_Data = WDLCM;
      LCM_RS = 1;
      LCM_RW = 0;
      LCM_E = 1;
      LCM_E = 0; //若晶振速度太高可以在這后加小的延時
      for(i=0;i<100;i++);//延時
      LCM_E = 1;
}
//寫指令
void WriteCommandLCM(unsigned char WCLCM,BuysC) //BuysC為0時忽略忙檢測
{
      if (BuysC) ReadStatusLCM(); //根據需要檢測忙
      LCM_Data = WCLCM;
      LCM_RS = 0;
      LCM_RW = 0;
      LCM_E = 1;
      LCM_E = 0;
      for(i=0;i<100;i++);
      LCM_E = 1;
}
//=====================================================================================
//初始化子程序
//=====================================================================================
void LCMInit(void) //LCM初始化
{
      LCM_Data = 0;
      WriteCommandLCM(0x38,0); // 三次顯示模式設置，不檢測忙信號
      Delay5Ms();
      WriteCommandLCM(0x38,0);
      Delay5Ms();
      WriteCommandLCM(0x38,0);
      Delay5Ms();
      WriteCommandLCM(0x38,1); // 顯示模式設置,開始要求每次檢測忙信號
      Delay5Ms();
      WriteCommandLCM(0x08,1); // 關閉顯示
//========================================第7頁========================================
      Delay5Ms();
      WriteCommandLCM(0x01,1); // 清屏
      Delay5Ms();
      WriteCommandLCM(0x06,1); // 顯示光標移動設置
      Delay5Ms();
      WriteCommandLCM(0x0c,1); // 顯示開及光標設置
      Delay5Ms();
}

//=====================================================================================
//按指定位置顯示一個字符
//=====================================================================================
void DisplayOneChar(unsigned char X, unsigned char Y, unsigned char DData)
{
      Y &= 0x1;
      X &= 0xF; //限制X不能大于15，Y不能大于1
      if (Y) X |= 0x40; //當要顯示第二行時地址碼+0x40;
      X |= 0x80; //算出指令碼
      WriteCommandLCM(X, 0); //這里不檢測忙信號，發送地址碼
      WriteDataLCM(DData);
}
//=====================================================================================
//按指定位置顯示一串字符
//void DisplayListChar(unsigned char X, unsigned char Y, unsigned char code *DData)
//說明: x(0-15):x參數 y(0-1):y參數 DData(字符串):要顯示的內容(英文、數字、符號)
//=====================================================================================

void DisplayListChar(unsigned char X, unsigned char Y, unsigned char code *DData)
{
      unsigned char ListLength,j;
      ListLength = strlen(DData);
      Y &= 0x1;
      X &= 0xF; //限制X不能大于15，Y不能大于1
//========================================第8頁========================================
if (X <= 0xF) //X坐標應小于0xF
{
            for(j=0;j<ListLength;j++)
      {
            DisplayOneChar(X, Y, DData[j]); //顯示單個字符
         X++;
      }
}
}
//=====================================================================================
//顯示自定義字符
//void mychar(char xx,char yy,unsigned char *character,unsigned char saveto)
//說明:xx(0-15):為x參數.yy(0-1):y參數.character:要顯示的字符的列表地址,在程序前面有定義
//saveto(1-7)為字符保存的RAM，每屏最多顯示7個自定義字符
//(0x00-0x0h是自定義字符)
//=====================================================================================
void mychar(char xx,char yy,unsigned char *character,unsigned char saveto)
{
      unsigned char add = (saveto<<3) | 0x40;
      unsigned char t;    //臨時變量，每一行的值

      t=*(character+0);
      WriteCommandLCM(add, 0);    //第1行
      WriteDataLCM(t);
      t=*(character+1);
      WriteCommandLCM(add+1, 0);    //第2行
      WriteDataLCM(t);
      t=*(character+2);
      WriteCommandLCM(add+2, 0);    //第3行
      WriteDataLCM(t);
      t=*(character+3);
      WriteCommandLCM(add+3, 0);    //第4行
      WriteDataLCM(t);
      t=*(character+4);
      WriteCommandLCM(add+4, 0);    //第5行
      //========================================第9頁========================================
      WriteDataLCM(t);
      t=*(character+5);
      WriteCommandLCM(add+5, 0);    //第6行
      WriteDataLCM(t);
      t=*(character+6);
      WriteCommandLCM(add+6, 0);    //第7行
      WriteDataLCM(t);
      t=*(character+7);
      WriteCommandLCM(add+7, 0);    //第8行
      WriteDataLCM(t);

      for(i = 0;i<8;i++)
      {
               WriteCommandLCM(add+i, 0);
            WriteDataLCM(*(character+i));
      }
      DisplayOneChar(xx,yy,saveto); //顯示字符
}
//=====================================================================================
//主函數
//=====================================================================================
main()
{
      Delay400Ms();
LCMInit();
      Delay400Ms();    //1602初始化
      while(1)
      {
            DisplayListChar(0,0,"This is ListChar");
            DisplayListChar(0,1,"!");
            for(j=0;j<30;j++)for(i=0;i<30000;i++);
                     WriteCommandLCM(0x01,1); //清屏
            Delay5Ms();
            DisplayListChar(0,0,"This is OneChar:");
            DisplayOneChar(0,1,0x4f);
            DisplayOneChar(1,1,0x6e);
            DisplayOneChar(2,1,0x65);
            //========================================第10頁========================================
            DisplayOneChar(3,1,0x21);
            for(j=0;j<30;j++)for(i=0;i<30000;i++);
                     WriteCommandLCM(0x01,1); //清屏
            Delay5Ms();
            DisplayListChar(0,0,"This is MyChar:");
            mychar(0,1, character0,1);
            mychar(1,1, character1,2);
            mychar(2,1, character2,3);
            for(j=0;j<30;j++)for(i=0;i<30000;i++);
                     WriteCommandLCM(0x01,1); //清屏
            Delay5Ms();
      }
}

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