ad_tlc1549.txt

用89C52制作恒流源

#include"reg52.h"
#define uchar unsigned char
#define uint unsigned int
sbit ad_clk=P1^4;
sbit ad_out=P1^5;
sbit ad_cs=P1^6;
uint ad_0()
{
  uchar idata i,j;
  uint ad;
  ad_cs=1;
  ad_cs=0;
  ad=0;
  for(i=0;i<10;i++)
  {
    ad_clk=0;
    ad*=2;
    if(ad_out) ad++;
    ad_clk=1;
   }
  ad_cs=1;
  return ad;
  for(i=0;i<10;i++);
}