to use fine calibration.
void setup_caldacs(void);
void postgain_cal(int obs1, int obs2, int dac);
void cal1(int obs, int dac);
+void cal1_fine(int obs, int dac);
/* misc and temp */
void channel_dependence(int adc,int range);
void caldac_dependence(int caldac);
-void dump_curve(int adc,int caldac);
void chan_cal(int adc,int caldac,int range,double target);
int read_eeprom(int addr);
double linear_fit_func_y(linear_fit_t *l,double x);
double linear_fit_func_x(linear_fit_t *l,double y);
double check_gain_chan_x(linear_fit_t *l,unsigned int ad_chanspec,int cdac);
+double check_gain_chan_fine(linear_fit_t *l,unsigned int ad_chanspec,int cdac);
+void dump_curve(linear_fit_t *l);
/* slowly varying measurements */
a = (offset1-offset2)/(slope1-slope2);
a=caldacs[dac].current-a;
- DPRINT(0,"caldac[%d] set to %g\n",dac,a);
-
caldacs[dac].current=rint(a);
update_caldac(dac);
usleep(100000);
+ DPRINT(0,"caldac[%d] set to %g (%g)\n",dac,rint(a),a);
+
if(verbose>=2){
preobserve(obs1);
measure_observable(obs1);
update_caldac(dac);
usleep(100000);
- DPRINT(0,"caldac[%d] set to %g\n",dac,a);
+ DPRINT(0,"caldac[%d] set to %g (%g)\n",dac,rint(a),a);
+ if(verbose>=3){
+ measure_observable(obs);
+ }
+}
+
+void cal1_fine(int obs, int dac)
+{
+ linear_fit_t l;
+ double a;
+
+ DPRINT(0,"linear fine: %s\n",observables[obs].name);
+ preobserve(obs);
+ check_gain_chan_fine(&l,observables[obs].observe_insn.chanspec,dac);
+ a=linear_fit_func_x(&l,observables[obs].target);
+
+ caldacs[dac].current=rint(a);
+ update_caldac(dac);
+ usleep(100000);
+
+ DPRINT(0,"caldac[%d] set to %g (%g)\n",dac,rint(a),a);
if(verbose>=3){
measure_observable(obs);
}
}
#endif
-#if 0
-void dump_curve(int adc,int caldac)
-{
- linear_fit_t l;
-
- check_gain_chan_x(&l,CR_PACK(adc,0,AREF_OTHER),caldac);
-}
-#endif
-
void setup_caldacs(void)
{
}
#endif
+
double check_gain_chan_x(linear_fit_t *l,unsigned int ad_chanspec,int cdac)
{
int orig,i,n;
caldacs[cdac].current=0;
update_caldac(cdac);
+ usleep(100000);
new_sv_measure(&sv);
- usleep(100000);
sum_err=0;
for(i=0;i*step<n;i++){
caldacs[cdac].current=i*step;
update_caldac(cdac);
+ //usleep(100000);
new_sv_measure(&sv);
//printf("--> %g\n",fabs(l.slope/l.err_slope));
}
- if(verbose>=3){
- static int dump_number=0;
- double x,y;
-
- printf("start dump %d\n",dump_number);
- for(i=0;i<l->n;i++){
- x=l->x0+i*l->dx-l->ave_x;
- y=l->y_data[i];
- printf("D%d: %d %g %g %g\n",dump_number,i,y,
- l->ave_y+l->slope*x,
- l->ave_y+l->slope*x-y);
+ if(verbose>=3)dump_curve(l);
+
+ free(l->y_data);
+
+ return l->slope;
+}
+
+
+double check_gain_chan_fine(linear_fit_t *l,unsigned int ad_chanspec,int cdac)
+{
+ int orig,i,n;
+ int step;
+ new_sv_t sv;
+ double sum_err;
+ int sum_err_count=0;
+ char str[20];
+ int fine_size = 10;
+
+ n=2*fine_size+1;
+ memset(l,0,sizeof(*l));
+
+ step=1;
+ l->n=0;
+
+ l->y_data=malloc(n*sizeof(double)/step);
+ if(l->y_data == NULL)
+ {
+ perror("comedi_calibrate");
+ exit(1);
+ }
+
+ orig=caldacs[cdac].current;
+
+ new_sv_init(&sv,dev,0,
+ CR_CHAN(ad_chanspec),
+ CR_RANGE(ad_chanspec),
+ CR_AREF(ad_chanspec));
+
+ caldacs[cdac].current=0;
+ update_caldac(cdac);
+ usleep(100000);
+
+ new_sv_measure(&sv);
+
+ sum_err=0;
+ for(i=0;i<n;i++){
+ caldacs[cdac].current=i+orig-fine_size;
+ update_caldac(cdac);
+ usleep(100000);
+
+ new_sv_measure(&sv);
+
+ l->y_data[i]=sv.average;
+ if(!isnan(sv.average)){
+ sum_err+=sv.error;
+ sum_err_count++;
}
- printf("end dump\n");
- dump_number++;
+ l->n++;
+ }
+
+ caldacs[cdac].current=orig;
+ update_caldac(cdac);
+
+ l->yerr=sum_err/sum_err_count;
+ l->dx=1;
+ l->x0=orig-fine_size;
+
+ linear_fit_monotonic(l);
+
+ if(verbose>=2 || (verbose>=1 && fabs(l->slope/l->err_slope)>4.0)){
+ sci_sprint_alt(str,l->slope,l->err_slope);
+ printf("caldac[%d] gain=%s V/bit S_min=%g dof=%g\n",
+ cdac,str,l->S_min,l->dof);
+ //printf("--> %g\n",fabs(l.slope/l.err_slope));
}
+ if(verbose>=3)dump_curve(l);
free(l->y_data);
-
/* helpers */
int get_bipolar_lowgain(comedi_t *dev,int subdev)
return l->ave_x+(y-l->ave_y)/l->slope;
}
+void dump_curve(linear_fit_t *l)
+{
+ static int dump_number=0;
+ double x,y;
+ int i;
+
+ printf("start dump %d\n",dump_number);
+ for(i=0;i<l->n;i++){
+ x=l->x0+i*l->dx-l->ave_x;
+ y=l->y_data[i];
+ printf("D%d: %d %g %g %g\n",dump_number,i,y,
+ l->ave_y+l->slope*x,
+ l->ave_y+l->slope*x-y);
+ }
+ printf("end dump\n");
+ dump_number++;
+}
+
/* printing of scientific numbers (with errors) */
postgain_cal(ni_zero_offset_low,ni_zero_offset_high,2);
cal1(ni_zero_offset_high,8);
cal1(ni_reference_low,0);
+ cal1_fine(ni_reference_low,0);
cal1(ni_reference_low,1);
}
postgain_cal(ni_zero_offset_low,ni_zero_offset_high,2);
cal1(ni_zero_offset_high,8);
cal1(ni_reference_low,0);
+ cal1_fine(ni_reference_low,0);
cal1(ni_reference_low,1);
if(do_output){
-Warning: device not fully calibrated due to insufficient information
-Please send this output to <ds@schleef.org>
$Id$
Driver name: ni_mio_cs
Device name: DAQCard-ai-16xe-50
Comedi version: 0.7.60
-ai, bipolar zero offset, low gain
-offset 3.03(20)e-3, target 0
-caldac[0] gain=-2.189(21)e-6 V/bit S_min=243.812 dof=254
-caldac[2] gain=1.56508(21)e-4 V/bit S_min=1783.46 dof=254
-caldac[8] gain=2.503(13)e-7 V/bit S_min=253.063 dof=254
-ai, bipolar zero offset, high gain
-offset 4.389(41)e-5, target 0
-caldac[0] gain=-2.320(29)e-8 V/bit S_min=249.236 dof=254
-caldac[2] gain=1.56558(27)e-6 V/bit S_min=791.846 dof=254
-caldac[8] gain=2.61352(17)e-7 V/bit S_min=855.308 dof=254
-ai, bipolar voltage reference, low gain
-offset 4.99545(93), target 5
-caldac[0] gain=-3.78978(23)e-4 V/bit S_min=14557.8 dof=254
-caldac[1] gain=-9.697(22)e-6 V/bit S_min=312.544 dof=254
-caldac[2] gain=1.57174(22)e-4 V/bit S_min=1157.4 dof=254
-caldac[8] gain=2.489(13)e-7 V/bit S_min=235.627 dof=254
-ai, unipolar zero offset, low gain
-offset 0.0143(16), target 0
-caldac[0] gain=3.74071(28)e-4 V/bit S_min=2557.58 dof=153
-caldac[1] gain=9.670(11)e-6 V/bit S_min=865.571 dof=254
-caldac[2] gain=7.8701(11)e-5 V/bit S_min=1417.23 dof=254
-caldac[8] gain=2.5358(68)e-7 V/bit S_min=264.614 dof=254
postgain: ai, bipolar zero offset, low gain; ai, bipolar zero offset, high gain
-caldac[2] gain=1.56512(21)e-4 V/bit S_min=1553.24 dof=254
-caldac[2] gain=1.56497(28)e-6 V/bit S_min=791.899 dof=254
-caldac[2] set to 88.5981
+caldac[2] gain=1.56377(23)e-4 V/bit S_min=1670.79 dof=254
+caldac[2] gain=1.56342(29)e-6 V/bit S_min=814.731 dof=254
+caldac[2] set to 89 (88.9996)
linear: ai, bipolar zero offset, high gain
-caldac[8] gain=2.61390(17)e-7 V/bit S_min=861.352 dof=254
-caldac[8] set to 2105.22
+caldac[8] gain=2.61512(18)e-7 V/bit S_min=892.566 dof=254
+caldac[8] set to 2115 (2114.92)
+linear: ai, bipolar voltage reference, low gain
+caldac[0] gain=-3.77918(24)e-4 V/bit S_min=12815.3 dof=254
+caldac[0] set to 110 (110.428)
+linear fine: ai, bipolar voltage reference, low gain
+caldac[0] gain=-3.8386(94)e-4 V/bit S_min=78.9229 dof=19
+caldac[0] set to 104 (104.393)
linear: ai, bipolar voltage reference, low gain
-caldac[0] gain=-3.78239(23)e-4 V/bit S_min=15854.5 dof=254
-caldac[0] set to 108.088
+caldac[1] gain=-1.0452(23)e-5 V/bit S_min=759.199 dof=254
+caldac[1] set to 148 (147.917)
ai, bipolar zero offset, low gain
-offset 1.01(77)e-3, target 0
-caldac[0] gain=-2.000(20)e-6 V/bit S_min=306.532 dof=254
-caldac[2] gain=1.56687(22)e-4 V/bit S_min=1618.1 dof=254
-caldac[8] gain=2.730(13)e-7 V/bit S_min=330.827 dof=254
+offset 8.7(69)e-4, target 0
+caldac[0] gain=-1.890(21)e-6 V/bit S_min=287.296 dof=254
+caldac[2] gain=1.56695(23)e-4 V/bit S_min=1532.32 dof=254
+caldac[8] gain=2.647(13)e-7 V/bit S_min=341.08 dof=254
ai, bipolar zero offset, high gain
-offset 5.5(41)e-7, target 0
-caldac[0] gain=-1.954(25)e-8 V/bit S_min=316.271 dof=254
-caldac[2] gain=1.56701(27)e-6 V/bit S_min=932.943 dof=254
-caldac[8] gain=2.61784(17)e-7 V/bit S_min=908.822 dof=254
+offset 9.8(41)e-7, target 0
+caldac[0] gain=-1.826(26)e-8 V/bit S_min=331.882 dof=254
+caldac[2] gain=1.56731(29)e-6 V/bit S_min=901.674 dof=254
+caldac[8] gain=2.62011(18)e-7 V/bit S_min=804.673 dof=254
ai, bipolar voltage reference, low gain
-offset 4.99690(93), target 5
-caldac[0] gain=-3.80360(23)e-4 V/bit S_min=29148.2 dof=254
-caldac[1] gain=-9.765(22)e-6 V/bit S_min=443.933 dof=254
-caldac[2] gain=1.57427(22)e-4 V/bit S_min=1010.04 dof=254
-caldac[8] gain=2.558(14)e-7 V/bit S_min=254.046 dof=254
+offset 4.99925(68), target 5
+caldac[0] gain=-3.78224(24)e-4 V/bit S_min=12116.6 dof=254
+caldac[1] gain=-1.0397(23)e-5 V/bit S_min=785.128 dof=254
+caldac[2] gain=1.57339(23)e-4 V/bit S_min=1028.84 dof=254
+caldac[8] gain=3.113(15)e-7 V/bit S_min=414.889 dof=254
ai, unipolar zero offset, low gain
-offset 4.1(16)e-3, target 0
-caldac[0] gain=3.73655(30)e-4 V/bit S_min=2142.83 dof=145
-caldac[1] gain=9.816(11)e-6 V/bit S_min=778.092 dof=254
-caldac[2] gain=7.8716(17)e-5 V/bit S_min=886.796 dof=188
-caldac[8] gain=2.8011(71)e-7 V/bit S_min=426.744 dof=254
+offset nan, target 0
+caldac[0] gain=3.73812(32)e-4 V/bit S_min=1279.24 dof=143
+caldac[1] gain=9.301(53)e-6 V/bit S_min=72.2441 dof=87
+caldac[2] gain=7.8821(22)e-5 V/bit S_min=839.616 dof=163
+caldac[8] gain=2.463(28)e-7 V/bit S_min=100.124 dof=95
projects / comedilib.git / commitdiff