Re: [Xenomai] analogy calibration issue(s)

["Yogi A. Patel" <yapatel@gatech.edu>]

>> please pull again from 
>> http://git.xenomai.org/xenomai-jro.git/log/?h=devel
It took some time, but I was able to get the process to *run* - but not 
work.

I had to make the following modifications to the calibration.c file to 
get this to work on 3 different machines:

diff --git a/lib/analogy/calibration.c b/lib/analogy/calibration.c
index b50cb2f..d062a00 100644
--- a/lib/analogy/calibration.c
+++ b/lib/analogy/calibration.c
@@ -105,7 +105,10 @@ static inline int read_int(int *val, struct 
_dictionary_ *f, const char *subd,

         *val = iniparser_getint(f, str, 0xFFFF);
         if (*val == 0xFFFF)
+       {
+               *val = -1;
                 ret = -ENOENT;
+       }
         free(str);

         return ret;
@@ -226,7 +229,7 @@ int a4l_read_calibration_file(char *name, struct 
a4l_calibration_data *data)
                 if (nb_elements < 0 ) {
                         /* AO is optional */
                         if (!strncmp(subdevice[k], AO_SUBD_STR, 
sizeof(AO_SUBD_STR)))
-                            break;
+                               return 0;
                         return -1;
                 }

I get why these modifications are necessary and why it works now. I 
don't understand how it worked for you before.

Now the problem is that when I run:

$ ./insn_read -R 0 -c 3 -d analogy0 -y /home/yapatel/file
Calibrated values:
0.000000
0.000000
0.000000
0.000000
0.000000
0.000000
0.000000
0.000000
0.000000
0.000000

without calibration, it works fine:

$ ./insn_read -R 0 -c 3 -d analogy0
Non Calibrated values:
4.837873
4.838788
4.839094
4.838788
4.839094
4.838483
4.838483
4.838178
4.836957
4.836652

Also, the calibration file output has another error. The channel values 
are all "-1". I've attached my newest calibration file from a machine 
with an NI-6250 card (no AO).

Can you send me a file that has worked for you?
-------------- next part --------------
[platform] 
driver_name = analogy_ni_pcimio;
board_name = pci-6250;

[analog_input] 
index = 0;
elements = 7;
[analog_input_0] 
channel = -1;
range = 0;
expansion_origin = 6.95294e-310;
nbcoeff= 4;
coeff_0 = 6.36599e-314;
coeff_1 = 6.95294e-310;
coeff_2 = 4.94066e-324;
coeff_3 = 6.91753e-310;
[analog_input_1] 
channel = -1;
range = 1;
expansion_origin = 32767;
nbcoeff= 4;
coeff_0 = -0.000646698;
coeff_1 = 0.000162018;
coeff_2 = -1.50544e-11;
coeff_3 = -6.47918e-16;
[analog_input_2] 
channel = -1;
range = 2;
expansion_origin = 32767;
nbcoeff= 4;
coeff_0 = -0.000225658;
coeff_1 = 6.46977e-05;
coeff_2 = -6.01158e-12;
coeff_3 = -2.58729e-16;
[analog_input_3] 
channel = -1;
range = 3;
expansion_origin = 32767;
nbcoeff= 4;
coeff_0 = -8.87597e-05;
coeff_1 = 3.24157e-05;
coeff_2 = -3.012e-12;
coeff_3 = -1.29632e-16;
[analog_input_4] 
channel = -1;
range = 4;
expansion_origin = 32767;
nbcoeff= 4;
coeff_0 = -1.8853e-05;
coeff_1 = 1.61998e-05;
coeff_2 = -1.50525e-12;
coeff_3 = -6.47836e-17;
[analog_input_5] 
channel = -1;
range = 5;
expansion_origin = 32767;
nbcoeff= 4;
coeff_0 = 2.17638e-05;
coeff_1 = 6.49031e-06;
coeff_2 = -6.03067e-13;
coeff_3 = -2.59551e-17;
[analog_input_6] 
channel = -1;
range = 6;
expansion_origin = 32767;
nbcoeff= 4;
coeff_0 = 3.60315e-05;
coeff_1 = 3.24112e-06;
coeff_2 = -3.01158e-13;
coeff_3 = -1.29614e-17;