自己做的一个小车，蓝牙模块和超声波模块。单独用超声波模块有用，放在一起怎么就没用了，请大神帮我看一下。
#include<reg51.h>
#define uchar unsigned char
#define uint unsigned int
sbit d1=P1^0;
sbit d2=P1^1;
sbit d3=P1^2;
sbit d4=P1^3;
sbit d5=P3^4;
sbit d6=P3^5;
sbit d7=P3^6;
sbit d8=P3^7;
sbit led1=P2^0;
sbit led2=P2^1;
sbit led3=P2^2;
sbit led4=P2^6;
sbit rs=P2^3;
sbit rw=P2^4;
sbit en=P2^5;
sbit RX=P1^7;
sbit TX=P1^6;
uchar code table[]={" welcome to fa "};
uchar code table1[]={"ming chuang zao "};
uchar a;
uint time=0;
uint s;
void delay(uchar m)
{
uchar n;
for(;m>0;m--)
for(n=110;n>0;n--);
}
void init()
{
TH0=0;
TL0=0;
time=TH0*256+TL0;
s=time/58;
if(s<10)
{
d1=1;
d2=0;
d3=1;
d4=0;
d5=1;
d6=0;
d7=1;
d8=0;
led1=1;
led2=1;
led3=0;
led4=0;
}
if(s>15)
{
d1=0;
d2=1;
d3=0;
d4=1;
d5=0;
d6=1;
d7=0;
d8=1;
led1=0;
led2=0;
led3=1;
led4=1;
}
}
void write_com(uchar com)
{
rs=0;
rw=0;
P0=com;
delay(1);
en=1;
delay(5);
en=0;
}
void write_date(uchar date)
{
rs=1;
rw=0;
P0=date;
delay(1);
en=1;
delay(5);
en=0;
}
void main()
{
uchar i,j;
TMOD=0x20;
SM0=0;
SM1=1;
TH1=0Xfd;
TL1=0Xfd;
REN=1;
TR1=1;
ES=1;
EA=1;
write_com(0x38);
write_com(0x06);
write_com(0x0c);
write_com(0x01);
while(1)
{
write_com(0x80);
for(i=0;i<16;i++)
write_date(table[i]);
write_com(0x80+0x40);
for(j=0;j<16;j++)
write_date(table1[j]);
if(a==0x01)
{
d1=0;
d2=1;
d3=0;
d4=1;
d5=0;
d6=1;
d7=0;
d8=1;
led1=0;
led2=0;
led3=1;
led4=1;
}
if(a==0x02)
{
d1=0;
d2=1;
d3=0;
d4=1;
d5=1;
d6=0;
d7=1;
d8=0;
led1=0;
led2=1;
led3=1;
led4=0;
}
if(a==0x03)
{
d1=1;
d2=0;
d3=1;
d4=0;
d5=1;
d6=0;
d7=1;
d8=0;
led1=1;
led2=1;
led3=0;
led4=0;
}
if(a==0x04)
{
d1=1;
d2=0;
d3=1;
d4=0;
d5=0;
d6=1;
d7=0;
d8=1;
led1=1;
led2=0;
led3=0;
led4=1;
}
if(a==0x05)
{
d1=1;
d2=1;
d3=1;
d4=1;
d5=1;
d6=1;
d7=1;
d8=1;
led1=1;
led2=1;
led3=1;
led4=1;
}
if(a==0x06)
{
ET0=1;
TH0=0;
TL0=0;
TMOD=0x01;
while(1)
{
TX=1;
delay(10);
TX=0;
while(!RX);
TR0=1;
while(RX);
TR0=0;
init();
}
}
}
}
void lanya() interrupt 4
{
if(RI==1)
{
RI=0;
a=SBUF;
}
} |
