LCD显示器静态显示字符

ID:269935 · 发表于 2018-1-1 23:10

#include<reg52.h>
#include<intrins.h>
sbit RS = P1^0;
sbit RW = P1^1;
sbit EN = P2^5;
#define RS_CLR RS=0
#define RS_SET RS=1
#define RW_CLR RW=0
#define RW_SET RW=1
#define EN_CLR EN=0
#define EN_SET EN=1
#define DataPort P0
void DelayUs2x (unsigned char t)
{
  while (--t);
}
void DelayMs (unsigned char t)
{
while(t--)
  {
   DelayUs2x(245);
   DelayUs2x(245);
  }
}
bit LCD_Check_Busy (void)
{
  RS_CLR;
  RW_SET;
  EN_CLR;
  _nop_();
  EN_SET;
  return (bit)(DataPort & 0x80);
}
void LCD_Write_Com (unsigned char com)
{
  while (LCD_Check_Busy());
  RS_CLR;
  RW_CLR;
  EN_SET;
  DataPort= com;
  _nop_();
  EN_CLR;
}
void LCD_Write_Data (unsigned char Data)
{
  while (LCD_Check_Busy());
  RS_SET;
  RW_CLR;
  EN_SET;
  DataPort= Data;
  _nop_();
  EN_CLR;
}
void LCD_Clear (void)
{
  LCD_Write_Com(0x01);
  DelayMs (5);
}
void LCD_Write_String(unsigned char x,unsigned char y,unsigned char *s)
{
  if(y == 0)
{
   LCD_Write_Com (0x80 + x);
}
  else
{
   LCD_Write_Com (0xc0 + x);
}
while (*s)
   {
LCD_Write_Data (*s);
s ++;
   }
}
void LCD_Write_Char (unsigned char x,unsigned char y,unsigned char Data)
{
  if (y == 0)
{
LCD_Write_Com (0x80 + x);
}
  else
{
   LCD_Write_Com (0xc0 + x);
}
LCD_Write_Data (Data);
}
void LCD_Init (void)
{
LCD_Write_Com (0x38);
DelayMs (5);
LCD_Write_Com (0x38);
DelayMs (5);
LCD_Write_Com (0x38);
DelayMs (5);
LCD_Write_Com (0x38);
LCD_Write_Com (0x08);
LCD_Write_Com (0x01);
LCD_Write_Com (0x06);
DelayMs (5);
LCD_Write_Com (0x0C);
}
void main (void)
{
  LCD_Init();
  LCD_Clear();
  while (1)
  {
LCD_Write_Char (7,0,'o');
LCD_Write_Char (8,0,'k');
LCD_Write_String (1,1,"hellow world");
  while (1);
}
}

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