各位大虾，帮忙看一下下面的程序错在哪里？怎么接收数据丢失？
#include <reg52.h>
sbit in1 = P0^5;
sbit in2 = P0^4;
sbit stepcontl = P2^6;
sbit out = P2^1;
sbit cs = P3^3;
sbit inc = P3^4;
sbit u = P3^5;
unsigned char test,count,point=0;
unsigned char temp[4]={0};
unsigned char buf[4]={0};
unsigned char flag;
void delay (int timer);
void com_intilize (void)
{
SCON=0x50; //方式1
TMOD|=0x20; //TR1启动,方式1
PCON=0;
TH1=0xfd; //9600
TR1=1;
ES=1;
REN=1;
EA=1;
}
void recive (void) interrupt 4 using 3
{
unsigned char ch;
if (RI)
{
RI=0;
ch =SBUF;
if(point==0)
{
if((ch=='y')|(ch=='m'))
point++;
else point=0;
}
else if((point>0)&(point<4))
buf[point++]=ch;
else point=0;
}
}
main()
{
int j,i=0;
com_intilize();
stepcontl = 0;
out=0;
delay(100);
while (1){
if(point==4){
temp[0]=buf[0];
count=temp;
//count=count&0x80;
buf[0]=0;
if(count==0x88){
cs= 0;
while(count)
{
temp[1]=buf[1];
buf[1]=0;
temp[2]=buf[2];
buf[2]=0;
temp[3]=buf[3];
buf[3]=0;
test=temp[1];
test=test&0x01;
if(test==0x01){ //正向加
u = 1;
inc =0;
for(j=0;j<temp[2];j++)
{
inc=1;
delay(50);
inc=0;
}
delay(1000);
u=0; //要求的零电平
for(i=0;i<32;i++)
{
inc=1;
delay(50);
inc=0;
}
delay(6670);
out=1;
for(j=0;j<(temp[3]);j++)
{
delay(100);
}
out=0;
}
else // 正向减
{
u = 0;
inc =0;
for(j=0;j<temp[2];j++)
{
inc=1;
delay(50);
inc=0;
}
delay(100);
u=0; //要求的零电平
for(i=0;i<32;i++)
{
inc=1;
delay(50);
inc=0;
}
delay(6670);
out=1;
for(j=0;j<(temp[3]);j++)
{
delay(200);
}
out=0;
}
if(test==0x01){
u = 1;
inc =0;
for(j=0;j<(temp[2]);j++)
{
inc=1;
delay(50);
inc=0;
}
delay(100);
}
else
{
u = 0;
inc =0;
for(j=0;j<(temp[2]);j++)
{
inc=1;
delay(50);
inc=0;
}
}
count=0;
}
}
}
}
}
void delay(int timer)
{
while(--timer);
}
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