comedi_from_phys — convert physical units to sample
#include <comedilib.h>
lsampl_t comedi_from_phys( | double data, |
| comedi_range * range, | |
lsampl_t maxdata); |
Converts parameter data given in
physical units (double) into sample values
(lsampl_t, between 0 and maxdata).
The parameter range
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. The mapping between
physical units and raw data is linear and
assumes that the converter has ideal characteristics.
Conversion is not affected by out-of-range behavior. Out-of-range
data parameters are silently truncated to the range 0
to maxdata.