mirror of https://github.com/gnss-sdr/gnss-sdr
170 lines
8.3 KiB
C
170 lines
8.3 KiB
C
/*----------------------------------------------------------------------------------------------*/
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/*! \file defines.h
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//
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// FILENAME: defines.h
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//
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// DESCRIPTION: Important, non board-specific defines, many associated with IS-GPS-200D.
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//
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// DEVELOPERS: Gregory W. Heckler (2003-2009)
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//
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// LICENSE TERMS: Copyright (c) Gregory W. Heckler 2009
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//
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// This file is part of the GPS Software Defined Radio (GPS-SDR)
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//
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// The GPS-SDR is free software; you can redistribute it and/or modify it under the terms of the
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// GNU General Public License as published by the Free Software Foundation; either version 2 of
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// the License, or (at your option) any later version. The GPS-SDR is distributed in the hope that
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// it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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// more details.
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//
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// Note: Comments within this file follow a syntax that is compatible with
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// DOXYGEN and are utilized for automated document extraction
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//
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// Reference:
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*/
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/*----------------------------------------------------------------------------------------------*/
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#ifndef DEFINES_H_
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#define DEFINES_H_
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/* For unnamed pipes */
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/*----------------------------------------------------------------------------------------------*/
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#define READ (0) //!< Read handle
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#define WRITE (1) //!< Write handle
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#define TRUE (1) //!< True?
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#define FALSE (0) //!< False!
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/*----------------------------------------------------------------------------------------------*/
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/* First make some type prototypes */
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/*----------------------------------------------------------------------------------------------*/
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typedef unsigned char uint8; //!< Unsigned byte
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typedef unsigned short uint16; //!< Unsigned word
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//typedef unsigned long uint32; //!< Unsigned double word
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typedef unsigned long long uint64; //!< Unsigned quadruple word
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typedef signed char int8; //!< Signed byte
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typedef signed short int16; //!< Signed word
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//typedef signed long int32; //!< Signed double word
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typedef signed long long int64; //!< Signed quadruple word
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typedef signed int int32;
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typedef unsigned int uint32;
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/*----------------------------------------------------------------------------------------------*/
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/* Constants for scaling the ephemeris found in the data message
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the format is the following: TWO_N5 -> 2^-5, TWO_P4 -> 2^4, PI_TWO_N43 -> Pi*2^-43, etc etc
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Additionally some of the PI*2^N terms are used in the tracking stuff
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TWO_PX ==> 2^X
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TWO_NX ==> 2^-X
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PI_TWO_NX ==> Pi*2^-X
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PI_TWO_PX ==> Pi*2^X
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ONE_PI_TWO_PX = (1/Pi)*2^X
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*/
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/*----------------------------------------------------------------------------------------------*/
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#define TWO_P4 (16) //!< 2^4
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#define TWO_P11 (2048) //!< 2^11
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#define TWO_P12 (4096) //!< 2^12
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#define TWO_P14 (16384) //!< 2^14
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#define TWO_P16 (65536) //!< 2^16
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#define TWO_P19 (524288) //!< 2^19
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#define TWO_P31 (2147483648.0) //!< 2^31
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#define TWO_P32 (4294967296.0) //!< 2^32 this is too big for an int so add the x.0
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#define TWO_P57 (1.441151880758559e+017) //!< 2^57
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#define TWO_N5 (0.03125) //!< 2^-5
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#define TWO_N11 (4.882812500000000e-004) //!< 2^-11
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#define TWO_N19 (1.907348632812500e-006) //!< 2^-19
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#define TWO_N20 (9.536743164062500e-007) //!< 2^-20
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#define TWO_N21 (4.768371582031250e-007) //!< 2^-21
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#define TWO_N24 (5.960464477539063e-008) //!< 2^-24
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#define TWO_N25 (2.980232238769531e-008) //!< 2^-25
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#define TWO_N27 (7.450580596923828e-009) //!< 2^-27
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#define TWO_N29 (1.862645149230957e-009) //!< 2^-29
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#define TWO_N30 (9.313225746154785e-010) //!< 2^-30
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#define TWO_N31 (4.656612873077393e-010) //!< 2^-31
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#define TWO_N32 (2.328306436538696e-010) //!< 2^-32
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#define TWO_N33 (1.164153218269348e-010) //!< 2^-33
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#define TWO_N38 (3.637978807091713e-012) //!< 2^-38
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#define TWO_N43 (1.136868377216160e-013) //!< 2^-43
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#define TWO_N50 (8.881784197001252e-016) //!< 2^-50
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#define TWO_N55 (2.775557561562891e-017) //!< 2^-55
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#define TWO_P56 (7.205759403792794e+016) //!< 2^56
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#define TWO_P57 (1.441151880758559e+017) //!< 2^57
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#define PI_TWO_N19 (5.992112452678286e-006) //!< Pi*2^-19
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#define PI_TWO_N43 (3.571577341960839e-013) //!< Pi*2^-43
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#define PI_TWO_N31 (1.462918079267160e-009) //!< Pi*2^-31
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#define PI_TWO_N38 (1.142904749427469e-011) //!< Pi*2^-38
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#define PI_TWO_N23 (3.745070282923929e-007) //!< Pi*2^-23
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/* from ICD-GPS-2000 !!! Do not extend the number of significant digits !!! */
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#ifndef PI
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#define PI (3.141592653589793) //!< Pi
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#endif
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#ifndef TWO_PI
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#define TWO_PI (6.283185307179586) //!< 2*Pi
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#endif
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#define THREE_PI_OVER_2 (4.7123889803) //!< 3*Pi/2
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#define PI_OVER_2 (1.5707963267) //!< Pi/2
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#define RAD_2_DEG (57.29577951308232) //!< 180/Pi
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#define DEG_2_RAD (0.01745329251994) //!< Pi/180
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/*----------------------------------------------------------------------------------------------*/
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/* Channel Defines */
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/*----------------------------------------------------------------------------------------------*/
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#define FRAME_SIZE_PLUS_2 (12) //!< Number of 30 bit words in subframe plus 2
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#define PREAMBLE (unsigned long)(0x008B) //!< GPS data message preamble.
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#define INVERSEPREAMBLE (unsigned long)(0x0074) //!< Inverted preamble.
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/*----------------------------------------------------------------------------------------------*/
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/* PVT Stuff */
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/*----------------------------------------------------------------------------------------------*/
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#define GRAVITY_CONSTANT (3.986005e14) //!< Earth's WGS-84 gravitational constant (m^3/s^2) as specified in IS-GPS-200D
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#define WGS84OE (7.2921151467e-5) //!< Earth's WGS-84 rotation rate (rads/s) as specified in IS-GPS-200D
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#define WGS84_MAJOR_AXIS (6378137.0) //!< Earth's WGS-84 ellipsoid's major axis
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#define WGS84_MINOR_AXIS (6356752.314245) //!< Earth's WGS-84 ellipsoid's minor axis
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#define SECONDS_IN_1024_WEEKS (619315200.0) //!< Number of seconds in 1024 weeks
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#define SECONDS_IN_WEEK (604800.0) //!< Number of seconds in a week
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#define HALF_OF_SECONDS_IN_WEEK (302400.0) //!< Number of seconds in one half of a week
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#define SECONDS_IN_DAY (86400.0) //!< Number of seconds in a day
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#define SECONDS_IN_HOUR (3600.0) //!< Number of seconds in an hour
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#define SECONDS_IN_MINUTE (60.0) //!< Number of seconds in a minute
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#define SECONDS_IN_HALF_HOUR (1800.0) //!< Number of seconds in a half hour
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#define FOUR_HOURS (14400.0) //!< Number of seconds in 4 hrs
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#define SECONDS_PER_MZCOUNT (0.6) //!< Seconds per RTCM-104 modified Z-count.
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#define L1 (1.57542e9)
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#define L2 (1.2276e9)
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#define L1_WAVELENGTH (1.902936727983649e-001) //!< Meters
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#define L1_OVER_C (5.255035468570728) //!< L1 over Speed O Light
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#define C_OVER_L1 (0.190293672798365) //!< Speed O Light over L1
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#ifndef SPEED_OF_LIGHT
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#define SPEED_OF_LIGHT (2.99792458e8) //!< Speed of light (m/s) as specified in IS-GPS-200D
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#endif
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#define INVERSE_L1 (6.347513678891978e-10) //!< 1/L1
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#define INVERSE_SPEED_OF_LIGHT (3.33564095198152049576e-9) //!< Inverse speed of light
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#define CODE_RATE (1.023e6) //!< L1 C/A code chipping rate
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#define INVERSE_CODE_RATE (9.775171065493646e-07) //!< 1/L1 C/A code chipping rate
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#define CODE_CHIPS (1023)
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#define SAMPS_MS (2048) //!< All incoming signals are resampled to this sampling frequency
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#define SAMPLE_FREQUENCY (2048000) //!< All incoming signals are resampled to this sampling frequency
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#define INVERSE_SAMPLE_FREQUENCY (4.882812500000000e-7)
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/*----------------------------------------------------------------------------------------------*/
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/* Global Serial Port */
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/*----------------------------------------------------------------------------------------------*/
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#define CHECK_STATUS(x) if((x) != NU_SUCCESS) {ERC_System_Error((x));}
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#define READ (0)
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#define WRITE (1)
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/*----------------------------------------------------------------------------------------------*/
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/*----------------------------------------------------------------------------------------------*/
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#define NON_EXISTENT_SV (666)
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#define NON_EXISTENT_IODE (9999)
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#define STALE_SPS_VALUE (99999)
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/*----------------------------------------------------------------------------------------------*/
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#endif //DEFINES_H_
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