thermistor.c

#include <stdio.h>
#include <stddef.h>
#include <stdlib.h>

struct point {
	int t;
	double R;
};

const struct point NCP18XH103F03RB_10K[]={
	{ .t=1250, .R=  0.531 },
	{ .t=1200, .R=  0.596 },
	{ .t=1150, .R=  0.672 },
	{ .t=1100, .R=  0.758 },
	{ .t=1050, .R=  0.858 },
	{ .t=1000, .R=  0.974 },
	{ .t= 950, .R=  1.110 },
	{ .t= 900, .R=  1.268 },
	{ .t= 850, .R=  1.452 },
	{ .t= 800, .R=  1.669 },
	{ .t= 750, .R=  1.925 },
	{ .t= 700, .R=  2.228 },
	{ .t= 650, .R=  2.586 },
	{ .t= 600, .R=  3.014 },
	{ .t= 550, .R=  3.535 },
	{ .t= 500, .R=  4.161 },
	{ .t= 450, .R=  4.917 },
	{ .t= 400, .R=  5.834 },
	{ .t= 350, .R=  6.948 },
	{ .t= 300, .R=  8.315 },
	{ .t= 250, .R= 10.000 },
	{ .t= 200, .R= 12.081 },
	{ .t= 150, .R= 14.674 },
	{ .t= 100, .R= 17.926 },
	{ .t=  50, .R= 22.021 },
	{ .t=   0, .R= 27.219 },
	{ .t= -50, .R= 33.892 },
	{ .t=-100, .R= 42.506 },
	{ .t=-150, .R= 53.650 },
	{ .t=-200, .R= 68.237 },
	{ .t=-250, .R= 87.559 },
	{ .t=-300, .R=113.347 },
	{ .t=-350, .R=148.171 },
	{ .t=-400, .R=195.652 },
	{ .t=-450, .R=261.000 },
	{ .t=-500, .R=352.000 },
	{ .t=-550, .R=484.000 }
};

const size_t NCP18XH103F03RB_10K_SZ = sizeof(NCP18XH103F03RB_10K)/sizeof(struct point);
const double ADCVREF = 2.5;
const size_t ADCRES = 12;

int main()
{
    const double ADCVONE = ADCVREF/(1<<ADCRES);
    size_t n;

    printf("termistor:\n");

    for(n=0;n<NCP18XH103F03RB_10K_SZ;n++)
    {
        double i = ADCVREF / ( 10. + NCP18XH103F03RB_10K[n].R);
        double vout = i*10.;

        printf("\t{\t%u,\t%4i }, /* T=%3iC R=%3.3fK Uadc=%1.5fV */\n", (unsigned)(vout/ADCVONE), NCP18XH103F03RB_10K[n].t,
                (unsigned)(0.1*NCP18XH103F03RB_10K[n].t), NCP18XH103F03RB_10K[n].R, vout);
    }

    return 0;
}