Get converter for hardware-calibrated subdevice
#include <comedilib.h>
int comedi_get_hardcal_converter(comedi_t * device, unsigned subdevice, unsigned channel, unsigned range, enum comedi_conversion_direction direction, comedi_polynomial_t * converter);
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The function comedi_get_hardcal_converter initializes the comedi_polynomial_t pointed to by converter so it can be passed to either comedi_to_physical, or comedi_from_physical. The result can be used to convert data from the specified subdevice, channel, and range. The direction parameter specifies whether converter will be passed to comedi_to_physical or comedi_from_physical.
This function initializes the comedi_polynomial_t pointed to by converter as a simple linear function with no calibration information, appropriate for boards which do their gain/offset/nonlinearity corrections in hardware. If your board needs calibration to be performed in software by the host computer, use comedi_get_softcal_converter instead. A subdevice will advertise the fact that it depends on a software calibration with the SDF_SOFT_CALIBRATED subdevice flag.
The result of this function will only depend on the channel parameter if either comedi_range_is_chan_specific or comedi_maxdata_is_chan_specific returns true for the specified subdevice.
Returns 0 on success, -1 on failure.
David Schleef <[email protected]>
Author.
Frank Mori Hess <[email protected]>
Author.
Herman Bruyninckx <[email protected]>
Author.
Bernd Porr <[email protected]>
Author.
Ian Abbott <[email protected]>
Author.
\('Eric Piel <[email protected]>
Author.
Copyright © 1998-2003 David Schleef
Copyright © 2001-2003, 2005, 2008 Frank Mori Hess
Copyright © 2002-2003 Herman Bruyninckx
Copyright © 2012 Bernd Porr
Copyright © 2012 Ian Abbott
Copyright © 2012 \('Eric Piel
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