#include "reg51.h"
#define uchar unsigned char
#define uint unsigned int
#define out P1
sbit DAC_cs=P2^0;
sbit DAC_wr=P2^1;
void main(void)
{
uchar temp,i=255;
while(1)
{
{
out=temp;
DAC_cs=0;
DAC_wr=0;
DAC_cs=1;
DAC_wr=1;
temp++;
while(--i);
while(--i);
while(--i);
}
}
}
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