單片機與dac0832如何編程序

#include<reg51.h>

sbit dawr=P3^6;

sbit csda=P3^2;

unsigned char a,j,k;

void delay(unsigned char i)

{

for(j=i;j>0;j--)

for(k=125;k>0;k--);

}

void main()

{

csda=0;

a=0;

dawr=0;

while(1)

{

P0=a;

delay(50);

a++;

}

}