51單片機控制LCD12864顯示漢字

ID:368523 · 發表于 2018-7-11 21:42

程序：
#include <reg52.h>
#define DATA_PORT P0
sbit LCD12864_EN = P1^2;
sbit LCD12864_RSET = P1^3;
sbit LCD12864_RS = P1^0;
sbit LCD12864_RW = P1^1;
sbit LCD12864_PSB  = P1^6;

void delay(unsigned int xms)  //延時//
{
      unsigned char i,j;
      for(j = 0; j < xms; j++)
      {
            for(i = 0;i < 110;i++);
      }
}
bit LcdBusyCheck(){
      bit result;
      LCD12864_RS = 0;
      LCD12864_RW = 1;
      LCD12864_EN = 1;
      result = (bit)(DATA_PORT&0x80);
      LCD12864_EN = 0;
      return result;
}

void WriteCmdToLCD(unsigned char cmd)
{
            //       while(LcdBusyCheck());
      delay(10);
      LCD12864_RS = 0;
      LCD12864_RW = 0;
      LCD12864_EN = 1;
      DATA_PORT = cmd;
      delay(5);
      LCD12864_EN = 0;
      delay(5);
      LCD12864_EN = 1;

}

void WriteDatToLcd(unsigned char dat)
{
            //while(LcdBusyCheck());
            delay(10);
            LCD12864_RS = 1;
      LCD12864_RW = 0;
      LCD12864_EN = 1;
      DATA_PORT = dat;
      delay(5);
      LCD12864_EN = 0;
      delay(5);
      LCD12864_EN = 1;

}

void WriteStrToLcd(unsigned char *str)
{
      while(*str != '\0')
      {
            WriteDatToLcd(*str++);
            delay(5);
      }
}

void LcdPos(unsigned char x,unsigned char y)
{
      unsigned char pos;
      if(x == 1)
      {
            x = 0x80;
      }else if(x == 2)
      {
            x = 0x90;
      }else if(x == 3)
      {
            x = 0x88;
      }else if(x == 4)
      {
            x = 0x98;
      }
      pos = x + y - 1;
      WriteCmdToLCD(pos);
}

void LcdInit()
{
      LCD12864_PSB = 1;
      LCD12864_RSET = 0;
      delay(10);
      LCD12864_RSET = 1;

      WriteCmdToLCD(0x30);
      delay(5);
      WriteCmdToLCD(0x30);
      delay(5);
      WriteCmdToLCD(0x18);
      delay(5);
      WriteCmdToLCD(0x10);
      delay(5);
      WriteCmdToLCD(0x01);

      delay(5);
      WriteCmdToLCD(0x06);
      delay(5);
      WriteCmdToLCD(0x0c);
      delay(5);

}
int main()
{
            P0 = 0xff;
            P1 = 0xff;
         LcdInit();
         while(1)
         {
                  LcdPos(1,1);
                     WriteStrToLcd("  榆林學院  ");
                     delay(5);

            LcdPos(2,1);
                     WriteStrToLcd("能源工程學院");
                     delay(5);
            LcdPos(3,1);
                     WriteStrToLcd("51控制LCD12864");
                     delay(5);
            LcdPos(4,1);
                     WriteStrToLcd("加油吧朋友們！！！");
                     delay(500);
         }
}