stc89c52 1602LCD字符静态显示字符 -

标题: stc89c52 1602LCD字符静态显示字符 [打印本页]

作者: 夏宇闪擎 时间: 2019-7-26 17:29
标题: stc89c52 1602LCD字符静态显示字符
# include <reg51.h>
# include <intrins.h>
typedef unsigned char BYTE;
typedef unsigned int WORD;
typedef bit BOOL;

sbit rs=P0^7;
sbit rw=P0^6;
sbit ep=P0^5;

BYTE code dis1 []={"  yanlindianzi"};
BYTE code dis2 []={" 15001162199"};

void delay (int m)
{
unsigned char i,j;
for (i=0;i<m;i++)
for (j=0;j<253;j++);
}

BOOL lcd_bz()
{
  BOOL result;
  rs=0;          // 读忙信号
  rw=1;
  ep=1;
  _nop_();
  _nop_();
  _nop_();
  _nop_();
  result = (BOOL)(P2&0x80);
  ep=0;
  result ;
}

void lcd_wcmd (BYTE cmd)
{
  while (lcd_bz());
  rs=0;
  rw=0;
  ep=0;
  _nop_();
  _nop_();
  P2=cmd ;
  _nop_();
  _nop_();
  _nop_();
  _nop_();
  ep=1;
  _nop_();
  _nop_();
  _nop_();
  _nop_();
  ep=0;
}

void lcd_pos (BYTE pos)
{
  lcd_wcmd (pos|0x80);
}

void lcd_wdat (BYTE dat)
{
while (lcd_bz());
  rs=1;
  rw=0;
  ep=0;
  _nop_();
  _nop_();
  P2=dat ;
  _nop_();
  _nop_();
  _nop_();
  _nop_();
  ep=1;
  _nop_();
  _nop_();
  _nop_();
  _nop_();
  ep=0;
}

void lcd_init ()
{
  lcd_wcmd (0x38);
  delay (1);
  lcd_wcmd (0x0c);
  delay (1);
  lcd_wcmd (0x06);
  delay (1);
  lcd_wcmd (0x01);
  delay (1);
}

main ()
{
  BYTE i;
  lcd_init ();
  delay (10);

  lcd_pos (0);
  i=0;
  while (dis1 [i]!='\0')
{
   lcd_wdat (dis1 [i]);
   i++;
}

lcd_pos (0x41);
  i=0;
  while (dis2 [i]!='\0')
{
   lcd_wdat (dis2 [i]);
   i++;
}
while (1);
}

作者: admin 时间: 2019-7-26 23:38
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