/*-
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* BSD 2-Clause License
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*
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* Copyright (c) 2012-2018, Jan Breuer
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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*
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* * Redistributions of source code must retain the above copyright notice, this
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* list of conditions and the following disclaimer.
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*
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* * Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
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* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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/**
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* @file scpi_units.c
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* @date Thu Nov 15 10:58:45 UTC 2012
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*
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* @brief SCPI units
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*
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*
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*/
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#include <string.h>
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#include "scpi/parser.h"
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#include "scpi/units.h"
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#include "utils_private.h"
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#include "scpi/utils.h"
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#include "scpi/error.h"
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#include "lexer_private.h"
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/*
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* multipliers IEEE 488.2-1992 tab 7-2
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* 1E18 EX
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* 1E15 PE
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* 1E12 T
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* 1E9 G
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* 1E6 MA (use M for OHM and HZ)
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* 1E3 K
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* 1E-3 M (disaalowed for OHM and HZ)
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* 1E-6 U
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* 1E-9 N
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* 1E-12 P
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* 1E-15 F
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* 1E-18 A
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*/
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/*
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* units definition IEEE 488.2-1992 tab 7-1
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*/
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const scpi_unit_def_t scpi_units_def[] = {
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#if USE_UNITS_PARTICLES
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/* Absorbet dose */
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{/* name */ "GY", /* unit */ SCPI_UNIT_GRAY, /* mult */ 1},
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/* Activity of radionuclide */
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{/* name */ "BQ", /* unit */ SCPI_UNIT_BECQUEREL, /* mult */ 1},
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/* Amount of substance */
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{/* name */ "MOL", /* unit */ SCPI_UNIT_MOLE, /* mult */ 1},
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/* Dose equivalent */
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{/* name */ "NSV", /* unit */ SCPI_UNIT_SIEVERT, /* mult */ 1e-9},
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{/* name */ "USV", /* unit */ SCPI_UNIT_SIEVERT, /* mult */ 1e-6},
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{/* name */ "MSV", /* unit */ SCPI_UNIT_SIEVERT, /* mult */ 1e-3},
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{/* name */ "SV", /* unit */ SCPI_UNIT_SIEVERT, /* mult */ 1},
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{/* name */ "KSV", /* unit */ SCPI_UNIT_SIEVERT, /* mult */ 1e3},
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{/* name */ "MASV", /* unit */ SCPI_UNIT_SIEVERT, /* mult */ 1e6},
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/* Energy */
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{/* name */ "EV", /* unit */ SCPI_UNIT_ELECTRONVOLT, /* mult */ 1},
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{/* name */ "KEV", /* unit */ SCPI_UNIT_ELECTRONVOLT, /* mult */ 1e3},
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{/* name */ "MAEV", /* unit */ SCPI_UNIT_ELECTRONVOLT, /* mult */ 1e6},
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{/* name */ "GEV", /* unit */ SCPI_UNIT_ELECTRONVOLT, /* mult */ 1e9},
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{/* name */ "TEV", /* unit */ SCPI_UNIT_ELECTRONVOLT, /* mult */ 1e12},
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/* Mass */
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{/* name */ "U", /* unit */ SCPI_UNIT_ATOMIC_MASS, /* mult */ 1},
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#endif /* USE_UNITS_PARTICLES */
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#if USE_UNITS_ANGLE
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/* Angle */
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{/* name */ "DEG", /* unit */ SCPI_UNIT_DEGREE, /* mult */ 1},
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{/* name */ "GON", /* unit */ SCPI_UNIT_GRADE, /* mult */ 1},
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{/* name */ "MNT", /* unit */ SCPI_UNIT_DEGREE, /* mult */ 1. / 60.},
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{/* name */ "RAD", /* unit */ SCPI_UNIT_RADIAN, /* mult */ 1},
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{/* name */ "SEC", /* unit */ SCPI_UNIT_DEGREE, /* mult */ 1. / 3600.},
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{/* name */ "REV", /* unit */ SCPI_UNIT_REVOLUTION, /* mult */ 1},
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{/* name */ "RS", /* unit */ SCPI_UNIT_STERADIAN, /* mult */ 1},
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#endif /* USE_UNITS_ANGLE */
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#if USE_UNITS_ELECTRIC
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/* Electric - capacitance */
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{/* name */ "PF", /* unit */ SCPI_UNIT_FARAD, /* mult */ 1e-12},
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{/* name */ "NF", /* unit */ SCPI_UNIT_FARAD, /* mult */ 1e-9},
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{/* name */ "UF", /* unit */ SCPI_UNIT_FARAD, /* mult */ 1e-6},
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{/* name */ "MF", /* unit */ SCPI_UNIT_FARAD, /* mult */ 1e-3},
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{/* name */ "F", /* unit */ SCPI_UNIT_FARAD, /* mult */ 1},
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/* Electric - current */
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{/* name */ "UA", /* unit */ SCPI_UNIT_AMPER, /* mult */ 1e-6},
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{/* name */ "MA", /* unit */ SCPI_UNIT_AMPER, /* mult */ 1e-3},
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{/* name */ "A", /* unit */ SCPI_UNIT_AMPER, /* mult */ 1},
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{/* name */ "KA", /* unit */ SCPI_UNIT_AMPER, /* mult */ 1e3},
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/* Electric - potential */
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{/* name */ "UV", /* unit */ SCPI_UNIT_VOLT, /* mult */ 1e-6},
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{/* name */ "MV", /* unit */ SCPI_UNIT_VOLT, /* mult */ 1e-3},
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{/* name */ "V", /* unit */ SCPI_UNIT_VOLT, /* mult */ 1},
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{/* name */ "KV", /* unit */ SCPI_UNIT_VOLT, /* mult */ 1e3},
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/* Electric - resistance */
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{/* name */ "OHM", /* unit */ SCPI_UNIT_OHM, /* mult */ 1},
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{/* name */ "KOHM", /* unit */ SCPI_UNIT_OHM, /* mult */ 1e3},
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{/* name */ "MOHM", /* unit */ SCPI_UNIT_OHM, /* mult */ 1e6},
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/* Inductance */
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{/* name */ "UH", /* unit */ SCPI_UNIT_HENRY, /* mult */ 1e-6},
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{/* name */ "MH", /* unit */ SCPI_UNIT_HENRY, /* mult */ 1e-3},
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{/* name */ "H", /* unit */ SCPI_UNIT_HENRY, /* mult */ 1},
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#endif /* USE_UNITS_ELECTRIC */
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#if USE_UNITS_ELECTRIC_CHARGE_CONDUCTANCE
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/* Electric - charge */
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{/* name */ "C", /* unit */ SCPI_UNIT_COULOMB, /* mult */ 1},
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/* Electric - conductance */
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{/* name */ "USIE", /* unit */ SCPI_UNIT_SIEMENS, /* mult */ 1e-6},
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{/* name */ "MSIE", /* unit */ SCPI_UNIT_SIEMENS, /* mult */ 1e-3},
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{/* name */ "SIE", /* unit */ SCPI_UNIT_SIEMENS, /* mult */ 1},
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#endif /* USE_UNITS_ELECTRIC_CHARGE_CONDUCTANCE */
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#if USE_UNITS_ENERGY_FORCE_MASS
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/* Energy */
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{/* name */ "J", /* unit */ SCPI_UNIT_JOULE, /* mult */ 1},
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{/* name */ "KJ", /* unit */ SCPI_UNIT_JOULE, /* mult */ 1e3},
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{/* name */ "MAJ", /* unit */ SCPI_UNIT_JOULE, /* mult */ 1e6},
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/* Force */
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{/* name */ "N", /* unit */ SCPI_UNIT_NEWTON, /* mult */ 1},
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{/* name */ "KN", /* unit */ SCPI_UNIT_NEWTON, /* mult */ 1e3},
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/* Pressure */
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{/* name */ "ATM", /* unit */ SCPI_UNIT_ATMOSPHERE, /* mult */ 1},
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{/* name */ "INHG", /* unit */ SCPI_UNIT_INCH_OF_MERCURY, /* mult */ 1},
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{/* name */ "MMHG", /* unit */ SCPI_UNIT_MM_OF_MERCURY, /* mult */ 1},
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{/* name */ "TORR", /* unit */ SCPI_UNIT_TORT, /* mult */ 1},
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{/* name */ "BAR", /* unit */ SCPI_UNIT_BAR, /* mult */ 1},
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{/* name */ "PAL", /* unit */ SCPI_UNIT_PASCAL, /* mult */ 1},
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{/* name */ "KPAL", /* unit */ SCPI_UNIT_PASCAL, /* mult */ 1e3},
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{/* name */ "MAPAL", /* unit */ SCPI_UNIT_PASCAL, /* mult */ 1e6},
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/* Viscosity kinematic */
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{/* name */ "ST", /* unit */ SCPI_UNIT_STROKES, /* mult */ 1},
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/* Viscosity dynamic */
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{/* name */ "P", /* unit */ SCPI_UNIT_POISE, /* mult */ 1},
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/* Viscosity dynamic */
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{/* name */ "L", /* unit */ SCPI_UNIT_LITER, /* mult */ 1},
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/* Mass */
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{/* name */ "MG", /* unit */ SCPI_UNIT_KILOGRAM, /* mult */ 1e-6},
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{/* name */ "G", /* unit */ SCPI_UNIT_KILOGRAM, /* mult */ 1e-3},
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{/* name */ "KG", /* unit */ SCPI_UNIT_KILOGRAM, /* mult */ 1},
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{/* name */ "TNE", /* unit */ SCPI_UNIT_KILOGRAM, /* mult */ 1000},
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#endif /* USE_UNITS_ENERGY_FORCE_MASS */
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#if USE_UNITS_FREQUENCY
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/* Frequency */
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{/* name */ "HZ", /* unit */ SCPI_UNIT_HERTZ, /* mult */ 1},
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{/* name */ "KHZ", /* unit */ SCPI_UNIT_HERTZ, /* mult */ 1e3},
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{/* name */ "MHZ", /* unit */ SCPI_UNIT_HERTZ, /* mult */ 1e6},
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{/* name */ "GHZ", /* unit */ SCPI_UNIT_HERTZ, /* mult */ 1e9},
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#endif /* USE_UNITS_FREQUENCY */
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#if USE_UNITS_DISTANCE
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/* Length */
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{/* name */ "ASU", /* unit */ SCPI_UNIT_ASTRONOMIC_UNIT, /* mult */ 1},
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{/* name */ "PRS", /* unit */ SCPI_UNIT_PARSEC, /* mult */ 1},
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#if USE_UNITS_IMPERIAL
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{/* name */ "IN", /* unit */ SCPI_UNIT_INCH, /* mult */ 1},
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{/* name */ "FT", /* unit */ SCPI_UNIT_FOOT, /* mult */ 1},
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{/* name */ "MI", /* unit */ SCPI_UNIT_MILE, /* mult */ 1},
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{/* name */ "NAMI", /* unit */ SCPI_UNIT_NAUTICAL_MILE, /* mult */ 1},
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#endif /* USE_UNITS_IMPERIAL */
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{/* name */ "NM", /* unit */ SCPI_UNIT_METER, /* mult */ 1e-9},
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{/* name */ "UM", /* unit */ SCPI_UNIT_METER, /* mult */ 1e-6},
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{/* name */ "MM", /* unit */ SCPI_UNIT_METER, /* mult */ 1e-3},
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{/* name */ "M", /* unit */ SCPI_UNIT_METER, /* mult */ 1},
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{/* name */ "KM", /* unit */ SCPI_UNIT_METER, /* mult */ 1e3},
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#endif /* USE_UNITS_DISTANCE */
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#if USE_UNITS_LIGHT
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/* Illuminance */
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{/* name */ "LX", /* unit */ SCPI_UNIT_LUX, /* mult */ 1},
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/* Luminous flux */
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{/* name */ "LM", /* unit */ SCPI_UNIT_LUMEN, /* mult */ 1},
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/* Luminous intensity */
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{/* name */ "CD", /* unit */ SCPI_UNIT_CANDELA, /* mult */ 1},
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#endif /* USE_UNITS_LIGHT */
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#if USE_UNITS_MAGNETIC
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/* Magnetic flux */
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{/* name */ "WB", /* unit */ SCPI_UNIT_WEBER, /* mult */ 1},
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/* Magnetic induction */
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{/* name */ "NT", /* unit */ SCPI_UNIT_TESLA, /* mult */ 1e-9},
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{/* name */ "UT", /* unit */ SCPI_UNIT_TESLA, /* mult */ 1e-6},
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{/* name */ "MT", /* unit */ SCPI_UNIT_TESLA, /* mult */ 1e-3},
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{/* name */ "T", /* unit */ SCPI_UNIT_TESLA, /* mult */ 1},
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#endif /* USE_UNITS_MAGNETIC */
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#if USE_UNITS_POWER
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/* Power */
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{/* name */ "W", /* unit */ SCPI_UNIT_WATT, /* mult */ 1},
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{/* name */ "DBM", /* unit */ SCPI_UNIT_DBM, /* mult */ 1},
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{/* name */ "DBMW", /* unit */ SCPI_UNIT_DBM, /* mult */ 1},
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#endif /* USE_UNITS_POWER */
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#if USE_UNITS_RATIO
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/* Ratio */
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{/* name */ "DB", /* unit */ SCPI_UNIT_DECIBEL, /* mult */ 1},
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{/* name */ "PCT", /* unit */ SCPI_UNIT_UNITLESS, /* mult */ 1e-2},
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{/* name */ "PPM", /* unit */ SCPI_UNIT_UNITLESS, /* mult */ 1e-6},
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#endif /* USE_UNITS_RATIO */
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#if USE_UNITS_TEMPERATURE
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/* Temperature */
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{/* name */ "CEL", /* unit */ SCPI_UNIT_CELSIUS, /* mult */ 1},
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#if USE_UNITS_IMPERIAL
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{/* name */ "FAR", /* unit */ SCPI_UNIT_FAHRENHEIT, /* mult */ 1},
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#endif /* USE_UNITS_IMPERIAL */
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{/* name */ "K", /* unit */ SCPI_UNIT_KELVIN, /* mult */ 1},
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#endif /* USE_UNITS_TEMPERATURE */
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#if USE_UNITS_TIME
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/* Time */
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{/* name */ "PS", /* unit */ SCPI_UNIT_SECOND, /* mult */ 1e-12},
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{/* name */ "NS", /* unit */ SCPI_UNIT_SECOND, /* mult */ 1e-9},
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{/* name */ "US", /* unit */ SCPI_UNIT_SECOND, /* mult */ 1e-6},
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{/* name */ "MS", /* unit */ SCPI_UNIT_SECOND, /* mult */ 1e-3},
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{/* name */ "S", /* unit */ SCPI_UNIT_SECOND, /* mult */ 1},
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{/* name */ "MIN", /* unit */ SCPI_UNIT_SECOND, /* mult */ 60},
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{/* name */ "HR", /* unit */ SCPI_UNIT_SECOND, /* mult */ 3600},
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{/* name */ "D", /* unit */ SCPI_UNIT_DAY, /* mult */ 1},
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{/* name */ "ANN", /* unit */ SCPI_UNIT_YEAR, /* mult */ 1},
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#endif /* USE_UNITS_TIME */
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SCPI_UNITS_LIST_END,
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};
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/*
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* Special number values definition
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*/
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const scpi_choice_def_t scpi_special_numbers_def[] = {
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{/* name */ "MINimum", /* type */ SCPI_NUM_MIN},
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{/* name */ "MAXimum", /* type */ SCPI_NUM_MAX},
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{/* name */ "DEFault", /* type */ SCPI_NUM_DEF},
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{/* name */ "UP", /* type */ SCPI_NUM_UP},
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{/* name */ "DOWN", /* type */ SCPI_NUM_DOWN},
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{/* name */ "NAN", /* type */ SCPI_NUM_NAN},
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{/* name */ "INFinity", /* type */ SCPI_NUM_INF},
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{/* name */ "NINF", /* type */ SCPI_NUM_NINF},
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{/* name */ "AUTO", /* type */ SCPI_NUM_AUTO},
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SCPI_CHOICE_LIST_END,
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};
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/**
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* Convert string describing unit to its representation
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* @param units units patterns
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* @param unit text representation of unknown unit
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* @param len length of text representation
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* @return pointer of related unit definition or NULL
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*/
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static const scpi_unit_def_t * translateUnit(const scpi_unit_def_t * units, const char * unit, size_t len) {
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int i;
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if (units == NULL) {
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return NULL;
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}
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for (i = 0; units[i].name != NULL; i++) {
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if (compareStr(unit, len, units[i].name, strlen(units[i].name))) {
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return &units[i];
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}
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}
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return NULL;
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}
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/**
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* Convert unit definition to string
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* @param units units definitions (patterns)
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* @param unit type of unit
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* @return string representation of unit
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*/
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static const char * translateUnitInverse(const scpi_unit_def_t * units, const scpi_unit_t unit) {
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int i;
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if (units == NULL) {
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return NULL;
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}
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for (i = 0; units[i].name != NULL; i++) {
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if ((units[i].unit == unit) && (units[i].mult == 1)) {
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return units[i].name;
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}
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}
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return NULL;
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}
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/**
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* Transform number to base units
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* @param context
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* @param unit text representation of unit
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* @param len length of text representation
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* @param value preparsed numeric value
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* @return TRUE if value parameter was converted to base units
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*/
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static scpi_bool_t transformNumber(scpi_t * context, const char * unit, size_t len, scpi_number_t * value) {
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size_t s;
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const scpi_unit_def_t * unitDef;
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s = skipWhitespace(unit, len);
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if (s == len) {
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value->unit = SCPI_UNIT_NONE;
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return TRUE;
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}
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unitDef = translateUnit(context->units, unit + s, len - s);
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if (unitDef == NULL) {
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SCPI_ErrorPush(context, SCPI_ERROR_INVALID_SUFFIX);
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return FALSE;
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}
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value->content.value *= unitDef->mult;
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value->unit = unitDef->unit;
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return TRUE;
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}
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/**
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* Parse parameter as number, number with unit or special value (min, max, default, ...)
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* @param context
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* @param value return value
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* @param mandatory if the parameter is mandatory
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* @return
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*/
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scpi_bool_t SCPI_ParamNumber(scpi_t * context, const scpi_choice_def_t * special, scpi_number_t * value, scpi_bool_t mandatory) {
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scpi_token_t token;
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lex_state_t state;
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scpi_parameter_t param;
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scpi_bool_t result;
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int32_t tag;
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if (!value) {
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SCPI_ErrorPush(context, SCPI_ERROR_SYSTEM_ERROR);
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return FALSE;
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}
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result = SCPI_Parameter(context, ¶m, mandatory);
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if (!result) {
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return result;
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}
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state.buffer = param.ptr;
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state.pos = state.buffer;
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state.len = param.len;
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switch (param.type) {
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case SCPI_TOKEN_DECIMAL_NUMERIC_PROGRAM_DATA:
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case SCPI_TOKEN_HEXNUM:
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case SCPI_TOKEN_OCTNUM:
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case SCPI_TOKEN_BINNUM:
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case SCPI_TOKEN_DECIMAL_NUMERIC_PROGRAM_DATA_WITH_SUFFIX:
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case SCPI_TOKEN_PROGRAM_MNEMONIC:
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value->unit = SCPI_UNIT_NONE;
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value->special = FALSE;
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result = TRUE;
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break;
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default:
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break;
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}
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switch (param.type) {
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case SCPI_TOKEN_DECIMAL_NUMERIC_PROGRAM_DATA:
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case SCPI_TOKEN_DECIMAL_NUMERIC_PROGRAM_DATA_WITH_SUFFIX:
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case SCPI_TOKEN_PROGRAM_MNEMONIC:
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value->base = 10;
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break;
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case SCPI_TOKEN_BINNUM:
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value->base = 2;
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break;
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case SCPI_TOKEN_HEXNUM:
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value->base = 16;
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break;
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case SCPI_TOKEN_OCTNUM:
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value->base = 8;
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break;
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default:
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break;
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}
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switch (param.type) {
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case SCPI_TOKEN_DECIMAL_NUMERIC_PROGRAM_DATA:
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SCPI_ParamToDouble(context, ¶m, &(value->content.value));
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break;
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case SCPI_TOKEN_HEXNUM:
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SCPI_ParamToDouble(context, ¶m, &(value->content.value));
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break;
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case SCPI_TOKEN_OCTNUM:
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SCPI_ParamToDouble(context, ¶m, &(value->content.value));
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break;
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case SCPI_TOKEN_BINNUM:
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SCPI_ParamToDouble(context, ¶m, &(value->content.value));
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break;
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case SCPI_TOKEN_DECIMAL_NUMERIC_PROGRAM_DATA_WITH_SUFFIX:
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scpiLex_DecimalNumericProgramData(&state, &token);
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scpiLex_WhiteSpace(&state, &token);
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scpiLex_SuffixProgramData(&state, &token);
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SCPI_ParamToDouble(context, ¶m, &(value->content.value));
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result = transformNumber(context, token.ptr, token.len, value);
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break;
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case SCPI_TOKEN_PROGRAM_MNEMONIC:
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scpiLex_WhiteSpace(&state, &token);
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scpiLex_CharacterProgramData(&state, &token);
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/* convert string to special number type */
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result = SCPI_ParamToChoice(context, &token, special, &tag);
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value->special = TRUE;
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value->content.tag = tag;
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break;
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default:
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result = FALSE;
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}
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return result;
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}
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/**
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* Convert scpi_number_t to string
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* @param context
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* @param value number value
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* @param str target string
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* @param len max length of string including null-character termination
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* @return number of chars written to string
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*/
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size_t SCPI_NumberToStr(scpi_t * context, const scpi_choice_def_t * special, scpi_number_t * value, char * str, size_t len) {
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const char * type;
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const char * unit;
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size_t result;
|
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if (!value || !str || len==0) {
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return 0;
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}
|
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if (value->special) {
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if (SCPI_ChoiceToName(special, value->content.tag, &type)) {
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strncpy(str, type, len);
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result = SCPIDEFINE_strnlen(str, len - 1);
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str[result] = '\0';
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return result;
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} else {
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str[0] = '\0';
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return 0;
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}
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}
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result = SCPI_DoubleToStr(value->content.value, str, len);
|
|
if (result + 1 < len) {
|
unit = translateUnitInverse(context->units, value->unit);
|
|
if (unit) {
|
strncat(str, " ", len - result);
|
if (result + 2 < len) {
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strncat(str, unit, len - result - 1);
|
}
|
result = strlen(str);
|
}
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}
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return result;
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}
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