at89s51_test.c

at89s51小系统（带有LCD）

#include <absacc.h>
#include <reg51.h>
#include<intrins.h>
#define uchar unsigned char
#define LED1 XBYTE [0xA000]
#define LED2 XBYTE [0xA001]
#define LED3 XBYTE [0xA002]
#define LED4 XBYTE [0xA003]
#define LED5 XBYTE [0xA004]
#define LED6 XBYTE [0xA005]
#define LED7 XBYTE [0xA006]
#define LED8 XBYTE [0xA007]
#define KEY XBYTE [0xA100]

#define lcdDl XBYTE [0xA201]
#define lcdDr XBYTE [0xA301]
#define lcdlCommand XBYTE [0xA200]
#define lcdrCommand XBYTE [0xA300]

#define strat_yaddr 0x40
#define strat_xaddr 0xb8
#define strat_dispaddr 0xc0
#define libleng 0x5F   //字模库容量
#define dataleng 16*8  //全屏8*8点阵容量

sbit P1_4=P1^4;
sbit P1_3=P1^3;
sbit RW=P1^6;

bit first_getkey=0,getkey=0,keyon=0,control_readkey=0;
uchar lednum=0,keynum=0;
uchar led[8]={0,0,0,0,0,0,0,0};
uchar code segtab[16]={0xc0,0xf9,0xa4,0xb0,0x99,0x92,0x82,0xf8,0x80,0x90,0x88,0x83,0xc6,0xa1,0x86,0x8e};//LED显示驱动数据

uchar code worddata[dataleng]="National University of defence technology's ASIC R&D Center";//自定义要显示的ASCII字符串

//8*8点阵ASCII全部字符表
uchar code ASCII[libleng][8]={
{0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00},/*SPACE*/
                               
{0x00,0x00,0x7e,0x21,0x21,0x21,0x7e,0x00},/*A*/
                               
{0x00,0x00,0x7f,0x49,0x49,0x49,0x36,0x00},/*B*/
                               
{0x00,0x00,0x3e,0x41,0x41,0x41,0x22,0x00},/*C*/
                               
{0x00,0x00,0x7f,0x41,0x41,0x22,0x1c,0x00},/*D*/
                               
{0x00,0x00,0x7f,0x49,0x49,0x49,0x49,0x00},/*E*/
                               
{0x00,0x00,0x7f,0x09,0x09,0x09,0x01,0x00},/*F*/
                               
{0x00,0x00,0x3e,0x41,0x49,0x49,0x7a,0x00},/*G*/
                               
{0x00,0x00,0x7f,0x08,0x08,0x08,0x7f,0x00},/*H*/
                               
{0x00,0x00,0x41,0x7f,0x41,0x00,0x00,0x00},/*I*/
                               
{0x00,0x00,0x20,0x40,0x41,0x3f,0x01,0x00},/*J*/
                               
{0x00,0x00,0x7f,0x08,0x14,0x22,0x41,0x00},/*K*/
                               
{0x00,0x00,0x7f,0x40,0x40,0x40,0x40,0x00},/*L*/
                               
{0x00,0x00,0x7f,0x02,0x0c,0x02,0x7f,0x00},/*M*/
                               
{0x00,0x00,0x7f,0x04,0x08,0x10,0x7f,0x00},/*N*/
                               
{0x00,0x00,0x3e,0x41,0x41,0x41,0x3e,0x00},/*O*/
                               
{0x00,0x00,0x7f,0x09,0x09,0x09,0x06,0x00},/*P*/
                               
{0x00,0x00,0x3e,0x41,0x41,0x41,0x3e,0x00},/*Q*/
                               
{0x00,0x00,0x7f,0x09,0x19,0x29,0x46,0x00},/*R*/
                               
{0x00,0x00,0x46,0x49,0x49,0x49,0x31,0x00},/*S*/
                               
{0x00,0x00,0x01,0x01,0x7f,0x01,0x01,0x00},/*T*/
                               
{0x00,0x00,0x3f,0x40,0x40,0x40,0x3f,0x00},/*U*/
                               
{0x00,0x00,0x1f,0x20,0x40,0x20,0x1f,0x00},/*V*/
                               
{0x00,0x00,0x3f,0x40,0x38,0x40,0x3f,0x00},/*W*/
                               
{0x00,0x00,0x63,0x14,0x08,0x14,0x63,0x00},/*X*/
                               
{0x00,0x00,0x07,0x08,0x70,0x08,0x07,0x00},/*Y*/
                               
{0x00,0x00,0x61,0x51,0x49,0x45,0x43,0x00},/*Z*/
                               
{0x00,0x00,0x20,0x54,0x54,0x54,0x7c,0x00},/*a*/
                               
{0x00,0x00,0x7f,0x48,0x44,0x44,0x38,0x00},/*b*/
                               
{0x00,0x00,0x38,0x44,0x44,0x44,0x20,0x00},/*c*/
                               
{0x00,0x00,0x38,0x44,0x44,0x48,0x7f,0x00},/*d*/
                               
{0x00,0x00,0x38,0x54,0x54,0x54,0x18,0x00},/*e*/
                               
{0x00,0x00,0x08,0x7e,0x09,0x01,0x02,0x00},/*f*/
                               
{0x00,0x00,0x0c,0x52,0x52,0x52,0x3e,0x00},/*g*/
                               
{0x00,0x00,0x7f,0x08,0x04,0x04,0x78,0x00},/*h*/
                               
{0x00,0x00,0x00,0x44,0x7d,0x40,0x00,0x00},/*i*/
                               
{0x00,0x00,0x40,0x40,0x44,0x3d,0x00,0x00},/*j*/
                               
{0x00,0x00,0x7f,0x10,0x28,0x44,0x00,0x00},/*k*/
                                 
{0x00,0x00,0x00,0x41,0x7e,0x40,0x00,0x00},/*l*/
                               
{0x00,0x00,0x7c,0x04,0x18,0x04,0x78,0x00},/*m*/
                               
{0x00,0x00,0x7c,0x08,0x04,0x04,0x78,0x00},/*n*/
                               
{0x00,0x00,0x38,0x44,0x44,0x44,0x38,0x00},/*o*/
                               
{0x00,0x00,0x7c,0x14,0x14,0x14,0x08,0x00},/*p*/
                               
{0x00,0x00,0x08,0x14,0x14,0x14,0x7c,0x00},/*q*/
                               
{0x00,0x00,0x7c,0x08,0x04,0x04,0x08,0x00},/*r*/
                               
{0x00,0x00,0x48,0x54,0x54,0x54,0x20,0x00},/*s*/
                                
{0x00,0x00,0x04,0x3f,0x44,0x44,0x24,0x00},/*t*/
                               
{0x00,0x00,0x3c,0x40,0x40,0x20,0x7e,0x00},/*u*/
                               
{0x00,0x00,0x1d,0x20,0x40,0x20,0x1c,0x00},/*v*/
                               
{0x00,0x00,0x3c,0x40,0x30,0x40,0x3c,0x00},/*w*/
                               
{0x00,0x00,0x44,0x28,0x10,0x28,0x44,0x00},/*x*/
                               
{0x00,0x00,0x06,0x48,0x48,0x48,0x3e,0x00},/*y*/
                               
{0x00,0x00,0x44,0x64,0x54,0x4c,0x44,0x00},/*z*/
                               
{0x00,0x00,0x00,0x01,0x02,0x04,0x00,0x00},/*`*/
                               
{0x00,0x00,0x00,0x42,0x7f,0x40,0x40,0x00},/*1*/
                               
{0x00,0x00,0x62,0x51,0x51,0x49,0x46,0x00},/*2*/
                               
{0x00,0x00,0x21,0x41,0x45,0x4b,0x31,0x00},/*3*/
                               
{0x00,0x00,0x18,0x14,0x12,0x7f,0x10,0x00},/*4*/
                               
{0x00,0x00,0x27,0x45,0x45,0x45,0x39,0x00},/*5*/
                               
{0x00,0x00,0x3c,0x4a,0x49,0x49,0x30,0x00},/*6*/
                               
{0x00,0x00,0x01,0x71,0x09,0x05,0x03,0x00},/*7*/
                               
{0x00,0x00,0x36,0x49,0x49,0x49,0x36,0x00},/*8*/
                               
{0x00,0x00,0x06,0x49,0x49,0x29,0x1e,0x00},/*9*/
                               
{0x00,0x00,0x3e,0x51,0x49,0x45,0x3e,0x00},/*0*/  
                               
{0x00,0x00,0x08,0x08,0x08,0x08,0x08,0x00},/*-*/
                               
{0x00,0x00,0x14,0x14,0x14,0x14,0x14,0x00},/*=*/
                               
{0x00,0x00,0x01,0x02,0x08,0x10,0x20,0x00},/*\\*/
                               
{0x00,0x00,0x04,0x08,0x04,0x08,0x04,0x00},/*~*/
                               
{0x00,0x00,0x00,0x00,0x4f,0x00,0x00,0x00},/*!*/
                               
{0x00,0x00,0x3e,0x59,0x55,0x79,0x3e,0x00},/*@*/
                               
{0x00,0x00,0x14,0x7f,0x14,0x7f,0x14,0x00},/*#*/
                               
{0x00,0x00,0x24,0x2a,0x7f,0x2a,0x12,0x00},/*$*/
                               
{0x00,0x00,0x23,0x13,0x08,0x62,0x61,0x00},/*%*/
                               
{0x00,0x00,0x04,0x02,0x01,0x02,0x04,0x00},/*^*/
                               
{0x00,0x00,0x36,0x49,0x55,0x22,0x50,0x00},/*&*/
                               
{0x00,0x00,0x14,0x08,0x3e,0x08,0x14,0x00},/***/
                               
{0x00,0x00,0x00,0x1c,0x22,0x41,0x00,0x00},/*(*/
                               
{0x00,0x00,0x00,0x41,0x22,0x1c,0x00,0x00},/*)*/
                               
{0x00,0x00,0x40,0x40,0x40,0x40,0x40,0x00},/*_*/
                               
{0x00,0x00,0x08,0x08,0x3e,0x08,0x08,0x00},/*+*/
                               
{0x00,0x00,0x00,0x00,0x7e,0x00,0x00,0x00},/*|*/
                               
{0x00,0x00,0x00,0x7f,0x41,0x41,0x00,0x00},/*[*/
                               
{0x00,0x00,0x00,0x41,0x41,0x7f,0x00,0x00},/*]*/
                               
{0x00,0x00,0x00,0x56,0x36,0x00,0x00,0x00},/*;*/
                               
{0x00,0x00,0x00,0x00,0x05,0x03,0x00,0x00},/*'*/
                               
{0x00,0x00,0x00,0x00,0x28,0x18,0x00,0x00},/*,*/
                               
{0x00,0x00,0x00,0x00,0x60,0x60,0x00,0x00},/*.*/
                               
{0x00,0x00,0x20,0x10,0x08,0x04,0x02,0x00},/*//*/
                               
{0x00,0x00,0x00,0x08,0x36,0x41,0x00,0x00},/*{*/
                               
{0x00,0x00,0x00,0x41,0x36,0x08,0x00,0x00},/*}*/
                               
{0x00,0x00,0x00,0x36,0x36,0x00,0x00,0x00},/*:*/
                               
{0x00,0x00,0x00,0x00,0x07,0x00,0x07,0x00},/*"*/
                               
{0x00,0x00,0x08,0x14,0x22,0x41,0x00,0x00},/*<*/
                               
{0x00,0x00,0x00,0x41,0x22,0x14,0x08,0x00},/*>*/
                               
{0x00,0x00,0x02,0x01,0x51,0x09,0x06,0x00}/*?*/
                               };  
  
void leddisp(void);
void readkey(void);
void lcdlon_off(uchar D);
void setlstartx(uchar D);
void setlstarty(uchar D);
void setlstartline(uchar D);
void lcdron_off(uchar D);
void setrstartx(uchar D);
void setrstarty(uchar D);
void setrstartline(uchar D);
void lcdlwrite(uchar D);
void lcdrwrite(uchar D);

uchar GetIndex(uchar szText);
void writelcd(void);

//void delay400ms(void);

void intT0() interrupt 1
{
 TH0=-2720/256;
 TL0=-2720%256;

 leddisp();
 
 if(control_readkey==1)
   {
    readkey();
   }
 control_readkey=!control_readkey;
}


void main(void)
{
 TMOD=0x01;
 TH0=-2720/256;
 TL0=-2720%256;
 TCON=0x10;
 ET0=1;
 EA=1; 
 
 
 while(1)
 { lcdlon_off(0x3F);
 lcdron_off(0x3F);  //LCD两屏都打开
 setlstartline(strat_dispaddr);
 setrstartline(strat_dispaddr);//初始化
 writelcd();//写数据
//以上为LCD整体程序

  if(getkey==1)
    {
     getkey=0;
     led[0]=keynum;
     led[1]=keynum;
     led[2]=keynum;
     led[3]=keynum;
     led[4]=keynum;
     led[5]=keynum;
     led[6]=keynum;
     led[7]=keynum;      
    }
 }
}


void leddisp(void)
{