dot_character_1.c

点阵

#include<AT89X52.H>

unsigned char code tab[]={0xfe,0xfd,0xfb,0xf7,0xef,0xdf,0xbf,0x7f}; 
unsigned char code digittab[64]={0x00,0x00,0x00,0x00,
                                 0x4c,0x34,0x34,0xdc,0x4e,0x3c,0x44,0x8c,0x00,  //欢
                                 0x49,0x7a,0xbc,0xa2,0xfd,0xa4,0xbc,0x80,0x00,  //迎
							     0x88,0x8a,0xfc,0x0f,0xfc,0x8b,0x88,0xc0,0x00,  //光
							     0x38,0xfe,0xe8,0xa6,0xec,0xac,0xf4,0x00,0x00,  //临
							     0x00,0x00,0x00}; 
#define Anode    P2  //接口定义
#define Cathode  P0
unsigned int timecount;
unsigned char cnta;
unsigned char n;

void main(void)
{
	TMOD=0x01;
	TH0=-3000/256; //TH0=-3000>>8;
	TL0=-3000%256; //TL0=-3000&0xff;
	TR0=1;
	ET0=1;
	EA=1;
	while(1);
}

void to(void) interrupt 1 using 0
{
	TH0=-3000/256;
	TL0=-3000%256;
	Cathode=tab[cnta];
	Anode=digittab[cnta+n];
	cnta++;
	if(cnta==8)
	{
		cnta=0;
	}
	timecount++;
	if(timecount==50)
	{	
		timecount=0;
		n++;
		if(n>42)
		{
			n=0;
		}
	}
}