man comedi_from_phys (Fonctions bibliothèques) - convert physical units to sample
NAME
comedi_from_phys - convert physical units to sample
SYNOPSIS
#include <comedilib.h> lsampl_t comedi_from_phys (double data, comedi_range * range, lsampl_t maxdata);
DESCRIPTION
Converts data given in physical units (data) into sample values (lsampl_t, between 0 and maxdata). The parameter rng represents the conversion information to use, and the parameter maxdata represents the maximum possible data value for the channel that the data will be written to.
Conversion is not affected by out-of-range behavior. Out-of-range data parameters are silently truncated to the range 0 to maxdata.