#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include "phlib.h"

struct timeval t;

int main()
{
double	va,vb;

if(!open_phoenix())
	{
	fprintf(stderr, "Phoenix driver open failed.\n");
	exit(1);
	}

set_voltage(-5000.0);
usleep(1000);
select_adc(0);
for(va = -5000.0; va < 5000.0; va += 200)
	{
	set_voltage(va);
	usleep(100);
	vb = minus5000_to_5000();
	printf("%f %f\n", vb, (va-vb)/1000 );
	}

return 0;
}