dac0832.c

单片机进行模数转换成电流后再转换为电压

#include<reg52.h>
#define uchar unsigned char
#define uint unsigned int
sbit dacs=P1^7;
sbit dawr=P3^6;
void delay(uint x)
{
	uint i;
	uchar j;
	for(i=x;i>0;i--)
	for(j=110;j>0;j--);
}
void main()
{
	uint a1;
	dacs=0;
	dawr=0;
	P2=0xff;
	while(1)
	{
		for(a1=255;a1>0;a1--)
		{
			P2=a1;
			delay(40);
		}
		for(a1=0;a1<5;a1++)
		{
		 P2=~P2;
		 delay(2000);
		 }
		for(a1=0;a1<255;a1++)
		{
			P2=a1;
			delay(40);
		}
				for(a1=0;a1<5;a1++)
		{
		 P2=~P2;
		 delay(2000);
		 }
	}
}