lcd1602.h

这是本人花了200元买的51开发板上的所有程序资料

sbit RS=P1^0;
sbit RW=P1^1;
sbit EN=P1^2; 
#define LCDPORT P0
//*************LCD1602驱动程序***************************///

void lcd_delay(unsigned char delaytime)
{
while(delaytime)delaytime--;
}
void write_lcd_command(unsigned char write_command)
{
lcd_delay(40);
RS=0;
RW=0;
LCDPORT=write_command;
EN=1;
EN=0;
}
void write_lcd_data(unsigned char write_data)
{
lcd_delay(40);
RS=1;
RW=0;
LCDPORT=write_data;
EN=1;
EN=0;
}

void LCD_write_char( unsigned x,unsigned char y,unsigned char dat) //x表示行，y表示该行的位置（也就是列）
{
 //LCD_set_xy( x, y ); 
 switch(x)
 {
  case 0:
       write_lcd_command(0x80+y);
	   break;
	   case 1:
	   write_lcd_command(0xc0+y);
       break;
  }
// LCD_en_dat(dat);
  write_lcd_data(dat|0x30);   //dat或上0x30，就时把数字0123456789转换成ASIIC码
}

void lcd_displaystr(unsigned char x,unsigned char y,unsigned char code *str)
{
 switch(x)
 {
  case 0:
       write_lcd_command(0x80+y);
	   break;
	   case 1:
	   write_lcd_command(0xc0+y);
       break;
  }
  while (*str)
  {
    write_lcd_data(*str);
	str++;
  }
}

void initial_lcd1602(void) //初始化LCD1602
{
 unsigned char i;
 EN=0;
 for(i=200;i>0;i--)
   lcd_delay(248);
 write_lcd_command(0x38);
 for(i=4;i>0;i--)
   lcd_delay(248);
 write_lcd_command(0x38);
  for(i=4;i>0;i--)
   lcd_delay(248);
 write_lcd_command(0x0c);  //光标不显示，不闪烁
 for(i=4;i>0;i--)
   lcd_delay(248);
 write_lcd_command(0x06);
  for(i=4;i>0;i--)
   lcd_delay(248);
write_lcd_command(0x01);
 for(i=4;i>0;i--)
   lcd_delay(248);

}
//********************lcd1602驱动程序到此完********************//