dot_3.c

点阵

#include"AT89X52.H"
unsigned char code tab[]={0xfe,0xfd,0xfb,0xf7,0xef,0xdf,0xbf,0x7f};
unsigned char code graph[3][8]={{0x12,0x14,0x3c,0x48,0x3c,0x14,0x12,0x00},{0x00,0x00,0x38,0x44,0x44,0x44,0x38,0x00},{0x30,0x48,0x44,0x22,0x44,0x48,0x30,0x00}};
unsigned char count;
unsigned char cnta;
//************************************
void main(void)
{
unsigned char i,j;
TMOD=0x01;
TH0=-5000/256;
TL0=-5000%256;
TR0=1;
ET0=1;
EA=1;

while(1)
{
if(P2_0==0)
{
for(i=5;i>0;i--)
for(j=248;j>0;j--)
;
if(P2_0==0)
{
count++;
if(count==3)
{
count=0;
}
while(P2_0==0);
}
}
}
}
//**********************************
void t0(void) interrupt 1 using 0
{
TH0=-5000/256;
TL0=-5000%256;
P3=tab[cnta];
P1=graph[count][cnta];
cnta++;
if(cnta==8)
{
cnta=0;
}
}