单片机与DAC0832采集数据

#define uchar unsigned char
sbit csda=P3^2;
sbit wr=P3^6;
sbit dula=P2^6;
sbit wela=P2^7;
uchar dig;
void delay(uchar);
void main()
{
dula=0;
wela=0;
csda=0;
wr=0;
//delay(200);
while(1)
{
P0=dig;
delay(10);
dig++;

}
}

void delay(uchar x)
{
uchar a;
unsigned int b;
for(a=x;a>0;a--)
for(b=100;b>0;b--);
}