Add binary search calibration function.
This commit is contained in:
David Schleef
parent
2851280824
commit
ec607f5003
4 changed files with 189 additions and 44 deletions
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@ -99,6 +99,7 @@ void setup_caldacs( calibration_setup_t *setup, int caldac_subdev);
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void postgain_cal( calibration_setup_t *setup, int obs1, int obs2, int dac);
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void cal1( calibration_setup_t *setup, int obs, int dac);
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void cal1_fine( calibration_setup_t *setup, int obs, int dac);
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void cal_binary( calibration_setup_t *setup, int obs, int dac);
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/* misc and temp */
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@ -380,6 +380,124 @@ void cal1_fine( calibration_setup_t *setup, int obs, int dac )
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}
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}
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void cal_binary( calibration_setup_t *setup, int obs, int dac)
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{
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int x1, x2, x;
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double y1, y2, y;
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new_sv_t sv;
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double target = setup->observables[obs].target;
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unsigned int chanspec = setup->observables[obs].observe_insn.chanspec;
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DPRINT(0,"binary: %s\n", setup->observables[obs].name);
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preobserve( setup, obs);
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x1 = 0;
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x2 = setup->caldacs[dac].maxdata;
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new_sv_init(&sv, setup->dev,0,chanspec);
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setup->caldacs[dac].current = x1;
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update_caldac( setup, dac );
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usleep(100000);
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new_sv_measure( setup->dev, &sv);
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y1 = sv.average;
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new_sv_init(&sv, setup->dev,0,chanspec);
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setup->caldacs[dac].current = x2;
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update_caldac( setup, dac );
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usleep(100000);
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new_sv_measure( setup->dev, &sv);
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y2 = sv.average;
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x = 0;
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while(x2-x1 > 1){
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x = (x1 + x2 + 1)/2;
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printf("trying %d\n",x);
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new_sv_init(&sv, setup->dev,0,chanspec);
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setup->caldacs[dac].current = x;
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update_caldac( setup, dac );
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usleep(100000);
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new_sv_measure( setup->dev, &sv);
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y = sv.average;
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if(fabs(y2 - target) > fabs(y1 - target)){
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x2 = x;
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y2 = y;
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}else{
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x1 = x;
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y1 = y;
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}
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measure_observable( setup, obs);
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}
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DPRINT(0,"caldac[%d] set to %d\n",dac,x);
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if(verbose>=3){
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measure_observable( setup, obs);
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}
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}
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#if 0
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void cal_postgain_binary( calibration_setup_t *setup, int obs1, int obs2, int dac)
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{
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int x1, x2, x;
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double y1, y2, y;
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new_sv_t sv;
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double target = setup->observables[obs1].target;
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unsigned int chanspec = setup->observables[obs].observe_insn.chanspec;
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DPRINT(0,"binary: %s\n", setup->observables[obs].name);
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preobserve( setup, obs);
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x1 = 0;
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x2 = setup->caldacs[dac].maxdata;
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new_sv_init(&sv, setup->dev,0,chanspec);
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setup->caldacs[dac].current = x1;
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update_caldac( setup, dac );
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usleep(100000);
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new_sv_measure( setup->dev, &sv);
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y1 = sv.average;
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new_sv_init(&sv, setup->dev,0,chanspec);
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setup->caldacs[dac].current = x2;
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update_caldac( setup, dac );
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usleep(100000);
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new_sv_measure( setup->dev, &sv);
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y2 = sv.average;
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x = 0;
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while(x2-x1 > 1){
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x = (x1 + x2 + 1)/2;
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printf("trying %d\n",x);
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new_sv_init(&sv, setup->dev,0,chanspec);
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setup->caldacs[dac].current = x;
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update_caldac( setup, dac );
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usleep(100000);
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new_sv_measure( setup->dev, &sv);
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y = sv.average;
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if(fabs(y2 - target) > fabs(y1 - target)){
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x2 = x;
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y2 = y;
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}else{
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x1 = x;
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y1 = y;
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}
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measure_observable( setup, obs);
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}
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DPRINT(0,"caldac[%d] set to %d\n",dac,x);
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if(verbose>=3){
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measure_observable( setup, obs);
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}
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}
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#endif
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#if 0
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void chan_cal(int adc,int cdac,int range,double target)
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{
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@ -558,6 +558,7 @@ int cal_ni_pci_6052e(calibration_setup_t *setup)
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postgain_cal( setup, ni_zero_offset_low,ni_zero_offset_high,2);
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postgain_cal( setup, ni_zero_offset_low,ni_zero_offset_high,3);
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cal1( setup, ni_zero_offset_high,0);
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cal_binary( setup, ni_zero_offset_high,0);
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cal1( setup, ni_zero_offset_high,1);
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cal1( setup, ni_reference_low,4);
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cal1_fine( setup, ni_reference_low,4);
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@ -1,56 +1,81 @@
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Warning: device not fully calibrated due to insufficient information
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Please send this output to <ds@schleef.org>
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Id: comedi_calibrate.c,v 1.24 2002/01/22 09:32:28 ds Exp
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Id: comedi_calibrate.c,v 1.34 2002/05/20 02:23:38 fmhess Exp
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Driver name: ni_pcimio
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Device name: pci-mio-16e-4
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Id: ni.c,v 1.27 2002/06/06 01:21:10 ds Exp
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Comedi version: 0.7.64
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ai, bipolar zero offset, low gain
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offset -0.01755(25), target 0
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caldac[2] gain=2.61(21)e-6 V/bit S_min=252.423 dof=254
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caldac[4] gain=-1.01914(21)e-3 V/bit S_min=516.532 dof=254
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caldac[8] gain=-1.372(21)e-5 V/bit S_min=288.485 dof=254
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offset -0.017094( 0), target 0
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caldac[2] gain=4.26(26)e-8 V/bit S_min=3409.07 dof=254
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caldac[4] gain=-1.021498(59)e-3 V/bit S_min=50641.2 dof=254
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caldac[6] gain=1.02(19)e-8 V/bit S_min=4115.85 dof=254
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caldac[8] gain=-6.908(46)e-6 V/bit S_min=22241.7 dof=254
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caldac[10] gain=1.03(14)e-8 V/bit S_min=5691.07 dof=254
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caldac[11] gain=1.96(27)e-8 V/bit S_min=3408.86 dof=254
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caldac[12] gain=-1.49(30)e-8 V/bit S_min=2469.79 dof=254
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caldac[13] gain=-1.19(19)e-8 V/bit S_min=4105.45 dof=254
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caldac[15] gain=-1.31(20)e-8 V/bit S_min=5662.46 dof=254
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ai, bipolar zero offset, high gain
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offset 5.09(15)e-5, target 0
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caldac[4] gain=-5.0978(13)e-6 V/bit S_min=502.615 dof=254
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caldac[8] gain=-1.39770(14)e-5 V/bit S_min=679.792 dof=254
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offset 6.83(11)e-5, target 0
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caldac[2] gain=-4.99(99)e-9 V/bit S_min=288.746 dof=254
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caldac[3] gain=-4.13(99)e-9 V/bit S_min=293.248 dof=254
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caldac[4] gain=-5.10962(97)e-6 V/bit S_min=727.711 dof=254
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caldac[7] gain=-6.78(99)e-9 V/bit S_min=248.96 dof=254
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caldac[8] gain=-1.39849(10)e-5 V/bit S_min=1288.88 dof=254
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ai, bipolar voltage reference, low gain
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offset 4.97115(24), target 5
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caldac[2] gain=-5.8899(21)e-4 V/bit S_min=1123.96 dof=254
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caldac[4] gain=-1.00933(21)e-3 V/bit S_min=1272.16 dof=254
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caldac[8] gain=-1.430(21)e-5 V/bit S_min=221.197 dof=254
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offset 4.97306(19), target 5
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caldac[2] gain=-5.88719(73)e-4 V/bit S_min=29950 dof=254
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caldac[4] gain=-1.008969(59)e-3 V/bit S_min=56500.4 dof=254
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caldac[8] gain=-2.5583(73)e-5 V/bit S_min=14492.6 dof=254
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ai, unipolar zero offset, low gain
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offset 0.01377(29), target 0
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caldac[2] gain=1.19099(58)e-3 V/bit S_min=210.537 dof=130
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caldac[4] gain=-1.01479(57)e-3 V/bit S_min=112.628 dof=131
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caldac[7] gain=-3.8281(50)e-4 V/bit S_min=187.394 dof=142
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caldac[8] gain=-1.400(22)e-5 V/bit S_min=262.423 dof=254
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offset 0.014652( 0), target 0
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caldac[0] gain=3.23(13)e-9 V/bit S_min=65130.6 dof=254
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caldac[1] gain=2.52(13)e-9 V/bit S_min=65389.8 dof=254
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caldac[2] gain=1.19191(17)e-3 V/bit S_min=17850.7 dof=134
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caldac[3] gain=-3.00(25)e-9 V/bit S_min=32625.1 dof=254
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caldac[4] gain=-1.01486(15)e-3 V/bit S_min=25438.3 dof=137
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caldac[5] gain=1.05(13)e-9 V/bit S_min=65724 dof=254
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caldac[7] gain=-3.8387(11)e-4 V/bit S_min=31783.2 dof=157
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caldac[8] gain=-2.372(29)e-6 V/bit S_min=8736.21 dof=254
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caldac[9] gain= V/bit S_min=inf dof=254
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caldac[11] gain=-4.20(25)e-9 V/bit S_min=32487.9 dof=254
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caldac[12] gain= V/bit S_min=inf dof=254
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ao 0, zero offset, low gain
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offset -0.01797(29), target 0.002442
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caldac[2] gain=2.29(21)e-6 V/bit S_min=254.331 dof=254
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caldac[4] gain=-1.01891(21)e-3 V/bit S_min=545.249 dof=254
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caldac[6] gain=-7.7659(21)e-4 V/bit S_min=607.002 dof=254
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caldac[8] gain=-1.374(21)e-5 V/bit S_min=230.534 dof=254
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caldac[10] gain=-1.1598(21)e-4 V/bit S_min=239.522 dof=254
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offset -0.017094( 0), target 0.002442
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caldac[0] gain=5.17(38)e-9 V/bit S_min=21570.8 dof=254
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caldac[1] gain=-2.62(25)e-9 V/bit S_min=32659.1 dof=254
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caldac[2] gain=5.35(68)e-9 V/bit S_min=17683.9 dof=254
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caldac[3] gain=-1.35(13)e-9 V/bit S_min=65678.3 dof=254
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caldac[4] gain=-1.021496(58)e-3 V/bit S_min=52710.9 dof=254
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caldac[6] gain=-7.78336(56)e-4 V/bit S_min=56693.3 dof=254
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caldac[8] gain=-2.424(30)e-6 V/bit S_min=7393.87 dof=254
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caldac[10] gain=-1.17403(57)e-4 V/bit S_min=48658.3 dof=254
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caldac[11] gain=-1.77(25)e-9 V/bit S_min=32718.1 dof=254
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caldac[12] gain=-2.57(25)e-9 V/bit S_min=32663.6 dof=254
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caldac[13] gain=-1.51(38)e-9 V/bit S_min=21743.2 dof=254
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caldac[14] gain=-2.74(13)e-9 V/bit S_min=65316.8 dof=254
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caldac[15] gain=-6.73(38)e-9 V/bit S_min=21440.4 dof=254
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ao 0, reference voltage, low gain
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offset -0.01866(26), target -0.001221
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caldac[2] gain=2.53(21)e-6 V/bit S_min=272.485 dof=254
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caldac[4] gain=-1.01943(21)e-3 V/bit S_min=573.214 dof=254
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caldac[6] gain=-7.7663(21)e-4 V/bit S_min=678.907 dof=254
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caldac[8] gain=-1.402(21)e-5 V/bit S_min=249.548 dof=254
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caldac[10] gain=-1.4088(21)e-4 V/bit S_min=272.917 dof=254
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caldac[11] gain=-1.3022(21)e-4 V/bit S_min=231 dof=254
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offset -0.017094( 0), target -0.001221
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caldac[0] gain=1.31(25)e-9 V/bit S_min=32740.8 dof=254
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caldac[1] gain=-2.85(13)e-9 V/bit S_min=65278.1 dof=254
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caldac[2] gain=2.12(13)e-9 V/bit S_min=65510.3 dof=254
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caldac[3] gain= V/bit S_min=inf dof=254
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caldac[4] gain=-1.021433(59)e-3 V/bit S_min=51765.8 dof=254
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caldac[5] gain=-3.10(13)e-9 V/bit S_min=65185.4 dof=254
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caldac[6] gain=-7.78395(57)e-4 V/bit S_min=53236.3 dof=254
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caldac[8] gain=-1.950(26)e-6 V/bit S_min=7024.76 dof=254
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caldac[10] gain=-1.40592(61)e-4 V/bit S_min=43847.7 dof=254
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caldac[11] gain=-1.29133(55)e-4 V/bit S_min=52013 dof=254
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caldac[12] gain=-1.84(13)e-9 V/bit S_min=65578.8 dof=254
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caldac[13] gain= V/bit S_min=inf dof=254
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caldac[14] gain=-1.95(13)e-9 V/bit S_min=65552.5 dof=254
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caldac[15] gain=-1.97(25)e-9 V/bit S_min=32706.8 dof=254
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ao 1, zero offset, low gain
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offset -0.01381(25), target 0.002442
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caldac[1] gain=-1.1411(21)e-4 V/bit S_min=263.933 dof=254
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caldac[2] gain=2.19(21)e-6 V/bit S_min=243.597 dof=254
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caldac[4] gain=-1.01955(21)e-3 V/bit S_min=599.792 dof=254
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caldac[8] gain=-1.428(21)e-5 V/bit S_min=237.196 dof=254
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caldac[9] gain=-7.7193(21)e-4 V/bit S_min=698.792 dof=254
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ao 1, reference voltage, low gain
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offset -0.01458(28), target -0.001221
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caldac[1] gain=-1.3930(21)e-4 V/bit S_min=309.317 dof=254
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caldac[2] gain=1.97(21)e-6 V/bit S_min=267.818 dof=254
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caldac[4] gain=-1.01913(21)e-3 V/bit S_min=543.239 dof=254
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caldac[5] gain=-1.2838(21)e-4 V/bit S_min=336.928 dof=254
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caldac[8] gain=-1.360(21)e-5 V/bit S_min=291.421 dof=254
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caldac[9] gain=-7.7185(21)e-4 V/bit S_min=697.617 dof=254
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offset -0.012210( 0), target 0.002442
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caldac[1] gain=-1.14975(64)e-4 V/bit S_min=36050.3 dof=254
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caldac[2] gain=1.601(95)e-7 V/bit S_min=1003.46 dof=254
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caldac[4] gain=-1.021610(62)e-3 V/bit S_min=41708.9 dof=254
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caldac[8] gain=-7.944(52)e-6 V/bit S_min=18169.4 dof=254
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caldac[9] gain=-7.73938(62)e-4 V/b
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