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Date: Wed, 05 Aug 2015 01:00:09 -0400
From: Jorge Ramirez Ortiz <jro@xenomai.org>
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Subject: Re: [Xenomai] analogy calibration issue(s)
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To: "Yogi A. Patel" <yapatel@gatech.edu>, "xenomai@xenomai.org" <xenomai@xenomai.org>

On 08/04/2015 11:01 PM, Yogi A. Patel wrote:
> Hi -
> 
> I am migrating a xenomai 2.5.4 application to the cobalt core. I have xenomai
> 3.0-rc5 installed with 3.18.12.
> 
> I have a NI PCI 6250 card that is attached via analogy_config. I can
> successfully run the insn_read command that is installed with the user space
> support by running:
> 
> sudo ./insn_read -d analogy0 -c 3 -R 0 --verbose
> 
> This prints out a set of values close to what I am expecting (5V)
> 
> I then attempt to use the analogy calibration feature added to Xenomai 3 by
> running:
> 
> sudo ./analogy_calibrate --device=analogy0 --output=calvals.bin
> 
> This prints out the following:
> 
>    0"000.079| calibration output: calvals.binls
>    0"004.427| calibrating device: analogy_ni_pcimio
>    0"255.934| Polynomial :
>    0"255.972|     order =  3
>    0"255.995|     expansion origin =  32767.000000
>    0"256.026|     order  0  coefficient =  32867.5
>    0"256.051|     order  1  coefficient =  0.949174
...
> 
> NOTE: there appears to be a print bug above (0"283.294| Calibrating AI: �m)

apply the following:

[jramirez@calypso ~ (master *)]$ git diff calibration_ni_m.c
diff --git a/utils/analogy/calibration_ni_m.c b/utils/analogy/calibration_ni_m.c
index c72a44d..6f9be6f 100644
--- a/utils/analogy/calibration_ni_m.c
+++ b/utils/analogy/calibration_ni_m.c
@@ -973,7 +973,7 @@ static int ni_m_calibrate_ai(void)
         * calibrate low, medium and high gain ranges
         */
        for (i = 0; i < ARRAY_LEN(cal_info); i++) {
-               __debug("Calibrating AI: %s \n", cal_info[i]);
+               __debug("Calibrating AI: %s \n", cal_info[i].message);

                if (cal_info[i].range >= 0)
                        goto calibrate;



> > Has anyone successfully used the calibration feature?

it seemed to work ok when I wrote the code some time ago on the 6220 I think it was.
Please could you post the contents of the calibration file?