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.TH comedi_calibrate 8 ""
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\fBcomedi_calibrate\fR - COMEDI calibration utility
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\fBcomedi_calibrate\fR [-f /dev/comediN]
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\fBcomedi_calibrate\fR is used to autocalibrate \fBcomedi\fR
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devices. Some \fBcomedi\fR devices have the ability to
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measure internal stable voltage references and control
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gains and offsets using programmable DACs. On these devices,
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\fBcomedi_calibrate\fR adjusts the programmable calibration
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DACs so that the measured value of reference voltages fall
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within acceptable limits. The calibration settings are
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saved to a file which can be fed to comedi_apply_calibration()
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and related functions.
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\fBcomedi_calibrate\fR prints a lot of debugging information
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\fBcomedi_calibrate\fR only works on boards that it understands.
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For boards that are known to have autocalibration ability,
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but are not currently supported, \fBcomedi_calibrate\fR will
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output basic debugging information that is useful for
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the author to add support for your device. Please send this
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.BI comedi_calibrate\ \-\-file\ /dev/comediN
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If no default calibration for \fI/dev/comediN\fR already exists,
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and save results to default location.
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.BI comedi_calibrate\ \-\-calibrate
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Perform a calibration, using existing calibration (if it exists) as
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.BI comedi_calibrate\ \-\-reset\ \-\-calibrate
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Perform a fresh calibration and save results to default location.
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.BI comedi_calibrate\ \-\-no\-calibrate\ \-\-subdevice\ subd\ \-\-range\ range\ \-\-save\-file\ cal_file
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Apply calibration for subdevice \fIsubd\fR, range \fIrange\fR, using
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the settings in the calibration file \fIcal_file\fR.
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\fBcomedi_calibrate\fR recognizes the following options:
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.BI \-a\ aref ,\ \-\-aref\ aref
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Along with \fB--channel\fR, \fB--range\fR
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and \fB--subdevice\fR, this specifies which calibration you want comedi_calibrate
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leave applied to the board.
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.B \-\-[no\-]calibrate
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Force calibration to be performed (or not).
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By default, comedi_calibrate will only perform a new calibration if
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no existing calibration file is found (see \fB--save-file\fR).
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.BI \-c\ channel, \-\-channel\ channel
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Along with \fB--subdevice\fR, \fB--range\fR
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and \fB--aref\fR, this specifies which calibration you want comedi_calibrate
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to leave applied to the board.
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Perform (or not) dump of various information about
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state of calibration prior to performing new calibration.
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.BI \-f\ /dev/comediN, \-\-file\ /dev/comediN
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Perform calibration on device \fB/dev/comediN\fR.
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Print help for options then exit.
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Don't generate output to stdout.
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.BI \-r\ range ,\ \-\-range\ range
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Along with \fB--channel\fR, \fB--subdevice\fR
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and \fB--aref\fR, this specifies which calibration you want comedi_calibrate
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to leave applied to the board.
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Reset (or don't reset) calibration subdevice to
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a reasonable starting point before
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performing calibration. The default is \fB--no-reset\fR. If
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\fB--no-reset\fR is used, the calibration routine will try to use
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an existing calibration (see \fB--save-file\fR) as a starting point.
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pass is not sufficient, and you wish to perform another calibration
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pass starting from the results of the previous pass.
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Perform (or not) dump of various information about
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state of calibration after performing new calibration.
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.BI \-S\ file ,\ \-\-save-file\ file
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Save calibration information to specified file,
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instead of default location. If the file already exists, comedi_calibrate
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will also use its contents as a starting point for the calibration pass (see
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.BI \-s\ subdevice ,\ \-\-subdevice\ subdevice
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Along with \fB--channel\fR, \fB--range\fR
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and \fB--aref\fR, this specifies which calibration you want comedi_calibrate
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to leave applied to the board.
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Generate more verbose output to stdout, can be specified multiple times
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David Schleef, <ds@schleef.org>
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Frank Mori Hess, <fmhess@users.sourceforge.net>
added
removed
man/comedi_calibrate.8
