v100.c

51下的 贪吃蛇 程序 用128864的LCD keil的开发环境

//Demo board system
//Designed 2002/12/25
//Modify   ----------
//Software Version V1.0
//Hardware Version V1.0 

#include <stdlib.h>
#include <LCD.h>
#include <reg51.h>
typedef unsigned char byte;
typedef unsigned int word;
#define XTALL           11.0592					//crystal frequency
#define DLY_10MS        (word)(10000*XTALL/12)  // 10ms counter        
#define DLY_400US       (word)(400*XTALL/12)    // 400us counter     
#define speed			30
#define  LCD_port    *(byte xdata*)(0x0000) 
#define   xram       ( byte xdata *)(0x8000)

sbit      power 	  =		0x94;	//p1.4
sbit	  lcd_power   =		0x95;   //p1.5
sbit	  DI		  =     0x92;   //p1.2
sbit	  RW		  =	    0x91;   //p1.1
sbit      E			  =		0x90;   //p1.0
sbit	  LCD1		  =		0x93;   //p1.3
sbit	  LCD2        =	    0x96;   //p1.6
//sbit	  RST		  =     0xB0;   //p3.0
//sbit	  RAM		  =		0xB1;	//P3.1
//sbit	  UP		  =		0xB5;	//P3.2
//sbit	  DOWN		  =		0xB4;	//P3.3
//sbit	  LEFT		  =		0xB3;	//P3.4
//sbit	  RIGHT		  =		0xB2;	//p3.5
sbit      C573        =     0x97;   //p1.7

extern bit		key_exit;

extern game(void);
extern byte REG573;
extern bit move_flag;
idata byte last_key;
word	key_count;
//#define k xram[2130];
//byte code key_code[16]={0xff,0xe7,0xf3,0xb7,0xcf,0xff,};//1:up 2:left 3:right 4:down

//------------------------------10ms timer counter-----------------------------
void TIM0_isr() interrupt 1 using 1 
{
	static idata word timercount;
   TR0=0;
   TL0+=-DLY_10MS&0xff;
   TH0+=-DLY_10MS>>8;
   TR0=1;
   if(timercount++ >speed){
   		timercount=0;
		move_flag=1;
   }
   if(key_count++>=10){ //press key 30ms force exit
   		key_count=0;
		key_exit=1;
   }
}
//-----------------------------key board service program----------------------
byte key(void)
{

	return 0xff;
}
//---------------------------reset the lcd controller chip--------------------- 
void reset_lcd(void){
	word i;
	C573 = 1;
	P2 = CS_16550;
	REG573 = CS_16550;	
	C573 = 0;

	MCR = 0X06;
    MCR = 00;	
	for(i=0;i<1000;i++);
	}
 //-------------------------write a command to left part of lcd ---------------
void write_l_com(byte com){
	byte ch;
	LCD2=0;
	LCD1=1;
	ch  = REG573;
	C573  =1;
	REG573 = CS_LCD; 
	P2  = CS_LCD;
	C573  = 0;
	
	RW=0;
	DI=0;
	LCD_port = com;
	E=1;
	E=1;
	E=0;
	C573 = 1;
	P2 = ch;
	REG573 = ch;
	C573 = 0;
	C573 = 0;
	}
//----------------------write a data to left part of lcd-----------------------
void write_l_dat(byte dat){
	byte ch;
	LCD2=0;
	LCD1=1;
	ch  = REG573;
	C573  =1;
	REG573 = CS_LCD; 
	P2  = CS_LCD;
	C573  = 0;
	RW=0;
	DI=1;
	LCD_port = dat;
	E=1;
	E=1;
	E=0;
	C573 = 1;
	P2 = ch;
	REG573 = ch;
	C573 = 0;
	C573 = 0;
	}
//--------------------------write a command to right part of lcd --------------
void write_r_com(byte com){
	byte ch;
	LCD2=1;
	LCD1=0;
	ch  = REG573;
	C573  =1;
	REG573 = CS_LCD; 
	P2  = CS_LCD;
	C573  = 0;
	RW=0;
	DI=0;
	LCD_port = com;
	E=1;
	E=1;
	E=0;
	C573 = 1;
	P2 = ch;
	REG573 = ch;
	C573 = 0;
	C573 = 0;
	}
//------------------------write a data to right part of lcd--------------------
void write_r_dat(byte dat){
	byte ch;
	LCD2=1;
	LCD1=0;
	ch  = REG573;
	C573  =1;
	REG573 = CS_LCD; 
	P2  = CS_LCD;
	C573  = 0;
	RW=0;
	DI=1;
	LCD_port = dat;
	E=1;
	E=1;
	E=0;
	C573 = 1;
	P2 = ch;
	REG573 = ch;
	C573 = 0;
	C573 = 0;
	}
//----------------------initialize lcd-----------------------------------------
 void init_lcd(){
 	byte i,j,page;
	word offset;
 	reset_lcd();
	write_l_com(0x3f);
	write_l_com(0xc0);
	write_r_com(0x3f);
	write_r_com(0xc0);
	page=0;
	for(i=0;i<8;i++){
		page=i|0xb8;
		write_l_com(page);
		write_l_com(0x40);
		write_r_com(page);
		write_r_com(0x40);
		for(j=0;j<64;j++){
			write_l_dat(0x00);
			write_r_dat(0x00);

		}
	}
	C573 = 1;
	P2 = CS_256;
	C573 = 0;
 	for(offset=0;offset<1024;offset++){
		*(xram+offset)=0x00;
	}
 }
 //---------------------display the data from the xdata buffer-----------------
 void display(){  //the display buffer is from 0x0000 to 0x0400 total 1024 byte
 	byte i,j,page=0;
	for(i=0;i<8;i++){
		page=i|0xb8;
		write_l_com(page);			//write the page of lcd display buffer memory
		write_l_com(40);			//set the start pixel
		for(j=0;j<64;j++){
			write_l_dat(*(xram+(128*i)+j));
		}
	}  //write the data to left part of lcd

	for(i=0;i<8;i++){
		page=i|0xb8;
		write_r_com(page);			//write the page of lcd display buffer memory
		write_r_com(40);			//set the start pixel
 		REG573 = CS_256;
		C573 = 1;
		P2 = CS_256;
		C573 = 0;
		for(j=0;j<64;j++){
			write_r_dat(*(xram+(128*i)+64+j));
		}
	}  //write the data to right part of lcd
}

//-----------------------CPU initialization-----------------------------------

void init(void) {
	TMOD=0x21 ;		// (T1 MODE 2_send_flagME,T0 MODE 1_send_flagME)
	TCON=0x51 ;		//0101 0000 (TR1=1 , TR0=1
	SCON=0x50 ;		//0101 0000 (MODE 1 ;RECEIVE ENABLE)
	IP=0x10  ;		//0001 0000 (S-PORT HIGH interrupt)
	IE=0x12   ;		//0001 0010 (S_PORT AND TIME0 ENABLE INT)
	TL1=TH1=0xfd;	//9600bps
	PCON=0x00;		//SMOD=0
	IE = 0x92;
	TR1=0;
//	RAM=0;			//static ram be select
	EA=1;           // enable all interrupt
}

//-----------------------------------------------------------------------------
void  main(){
 word i;
 power=0;
 lcd_power=0;
 init();
 init_lcd();
 while(1){
 	REG573 = CS_256;
	C573 = 1;
	P2 = CS_256;
	C573 = 0;
	game();
//------------------------------------------------
	display();
	while(1){
	 i=rand();
	}
	}
 }