log_temp.c

_计算实用教程Visual C++6.0实用教程

/* log_temp.c */
/* compile uadc.c with: gcc -c uadc.c */
/* then compile with: gcc -O log_temp.c uadc.o */
/* used in Ordinary user mode */

#include <stdio.h>
#include <stdlib.h>
#include "uadc.h"

int main(int argc, char * argv[]))
{
int data_point;
float temp;
int i;

if (argc < 3) 
 {
 fprintf(stderr,"Usage: argv[0] Number_of_minutes output_file\n");
 return -1;
 }

if(adc(CHANNEL_3,DEVICE_OPEN))
  {
  outfile=fopen(argv[2],"w");
  for (i=0;i<atoi(argv[1]);i++)
      {
      data_point=adc(CHANNEL_3,DEVICE_READ);
      temp=(float)(data_point-2730)/10.0;
      fprintf(outfile,"%d  %f \n",i,temp);
      sleep(60);
      }
  adc(CHANNEL_3,DEVICE_CLOSE);
}

return 0;
}