dslcd.c

来自「不少单片机C代码」· C语言 代码 · 共 47 行

#include <reg51.h>
#include <absacc.h>
#define uchar unsigned char
#define LCDCOM XBYTE[0x7ff0]
#define LCDDATA XBYTE[0x7ff1]
sbit bflag=ACC^7;
uchar idata s_GOOD[5]={0x47,0x4f,0x4f,0x44,0x00};

void wait(void)
{ 
  do {ACC=LCDCOM;} while(bflag==1);
}

void init_lcd(void)
{
  LCDCOM=0x38;
  wait();
  LCDCOM=0x06;
  wait();
  LCDCOM=0x0f;
  wait();
  LCDCOM=0x01;
  wait();
}

void  d_char(uchar a)
{ LCDDATA=a;
  wait();
}

void display( x,s)
uchar x;
uchar idata  *s;
{  uchar i=0;
   LCDCOM=x;
   while(s[i]!=0x00)
   { d_char(s[i]);
     i++;
   }
}

void main(void)
{ 
  init_lcd();
  display(2,s_GOOD);
}