From 03de53a7570acdf9d3ac270f94ff758b466ceac0 Mon Sep 17 00:00:00 2001 From: David Schleef Date: Wed, 29 Mar 2000 23:52:34 +0000 Subject: [PATCH] added support for pci-mio-16xe-10 --- comedi_calibrate/comedi_calibrate.c | 95 ++++++++++++++++++++++++++++- 1 file changed, 93 insertions(+), 2 deletions(-) diff --git a/comedi_calibrate/comedi_calibrate.c b/comedi_calibrate/comedi_calibrate.c index 81cf1f1..aa45dbd 100644 --- a/comedi_calibrate/comedi_calibrate.c +++ b/comedi_calibrate/comedi_calibrate.c @@ -63,6 +63,7 @@ void reset_caldacs(void); void setup_caldacs(void); void cal_ni_mio_E(void); void ni_mio_ai_postgain_cal(void); +void ni_mio_ai_postgain_cal_2(int chan,int dac,int range_lo,int range_hi,double gain); void channel_dependence(int adc,int range); void caldac_dependence(int caldac); void dump_curve(int adc,int caldac); @@ -263,6 +264,68 @@ void cal_ni_mio_E(void) return; } + if(!strcmp(boardname,"pci-mio-16xe-10")){ +/* + * results of channel dependence test: + * + * [0] [1] [2] [3] [8] + * offset, lo 1.9e-4* 2.2e-6 2.4e-7 + * offset, hi 2.0e-6* 2.1e-8 2.7e-7 + * offset, unip 1.9e-4 2.1e-6 3.9e-7 + * ref -2.3e-5*-1.3e-6*1.9e-4* 2.1e-6* 3.2e-7 + * + * thus, 2,3 are postgain offset, 8 is pregain, and + * 0,1 is gain. Note the suspicious lack of unipolar + * offset. + * + * layout + * + * 0 AI gain -2.3e-5 + * 1 AI gain -1.3e-6 + * 2 AI postgain offset 1.9e-4 + * 3 AI postgain offset 2.2e-6 + * 4 AO + * 5 AO + * 6 AO + * 7 AO + * 8 AI pregain offset 2.4e-7 + * 9 unknown + * 10 unknown + */ + printf("last factory calibration %02d/%02d/%02d\n", + read_eeprom(508),read_eeprom(507),read_eeprom(506)); + + printf("lsb=%d msb=%d\n",read_eeprom(430),read_eeprom(431)); + + ref=5.000+(0.001*(read_eeprom(430)+read_eeprom(431))); + printf("ref=%g\n",ref); + + reset_caldacs(); + + printf("postgain offset\n"); + ni_mio_ai_postgain_cal_2(0,2,0,6,100.0); + ni_mio_ai_postgain_cal_2(0,3,0,6,100.0); + + printf("pregain offset\n"); + chan_cal(0,8,6,0.0); + chan_cal(0,8,6,0.0); + + //printf("unipolar offset\n"); + //chan_cal(0,2,8,0.0); + //chan_cal(0,2,8,0.0); + + printf("gain offset\n"); + chan_cal(5,0,0,5.0); + chan_cal(5,1,0,5.0); + chan_cal(5,1,0,5.0); + + printf("results (offset)\n"); + for(i=0;i<16;i++){ + read_chan(0,i); + } + + //return; + } { int n_ranges; @@ -273,15 +336,19 @@ void cal_ni_mio_E(void) n_ranges=comedi_get_n_ranges(dev,ad_subdev,0); + /* 0 offset, low gain */ printf("channel dependence 0 range 0\n"); channel_dependence(0,0); + /* 0 offset, high gain */ printf("channel dependence 0 range %d\n",n_ranges/2-1); channel_dependence(0,n_ranges/2-1); + /* unip/bip offset */ printf("channel dependence 0 range %d\n",n_ranges/2); channel_dependence(0,n_ranges/2); + /* voltage reference */ printf("channel dependence 5 range 0\n"); channel_dependence(5,0); } @@ -315,6 +382,32 @@ void ni_mio_ai_postgain_cal(void) update_caldac(1); } +void ni_mio_ai_postgain_cal_2(int chan,int dac,int range_lo,int range_hi,double gain) +{ + double offset_lo,offset_hi; + linear_fit_t l; + double slope; + double a; + + check_gain_chan_x(&l,chan,range_lo,dac); + offset_lo=linear_fit_func_y(&l,caldacs[dac].current); + printf("offset lo %g\n",offset_lo); + + check_gain_chan_x(&l,chan,range_hi,dac); + offset_hi=linear_fit_func_y(&l,caldacs[dac].current); + printf("offset hi %g\n",offset_hi); + + slope=l.slope; + + a=(offset_lo-offset_hi)/(gain-1.0); + a=caldacs[dac].current-a/slope; + + printf("%g\n",a); + + caldacs[dac].current=rint(a); + update_caldac(dac); +} + void chan_cal(int adc,int cdac,int range,double target) { linear_fit_t l; @@ -385,8 +478,6 @@ void setup_caldacs(void) caldacs[i].subdev=s; caldacs[i].chan=i; caldacs[i].maxdata=comedi_get_maxdata(dev,s,i); -/* XXX */ -caldacs[i].maxdata=255; caldacs[i].current=0; //printf("caldac %d, %d\n",i,caldacs[i].maxdata); } -- 2.26.2