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authorStanley Huang <stanleyhuangyc@gmail.com>2013-06-10 13:21:54 +0800
committerStanley Huang <stanleyhuangyc@gmail.com>2013-06-10 13:21:54 +0800
commitf99f21926e515cf93e2af35eb82808f337998738 (patch)
treeba931f65405704517acc543a4e96fc521fe3212e /obdlogger/TinyGPS.h
parent47c6ff979fea8051c02fb38fe99c0021880a4ed8 (diff)
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update OBD logger
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-/*
-TinyGPS - a small GPS library for Arduino providing basic NMEA parsing
-Based on work by and "distance_to" and "course_to" courtesy of Maarten Lamers.
-Suggestion to add satellites(), course_to(), and cardinal(), by Matt Monson.
-Copyright (C) 2008-2012 Mikal Hart
-All rights reserved.
-
-This library is free software; you can redistribute it and/or
-modify it under the terms of the GNU Lesser General Public
-License as published by the Free Software Foundation; either
-version 2.1 of the License, or (at your option) any later version.
-
-This library is distributed in the hope that it will be useful,
-but WITHOUT ANY WARRANTY; without even the implied warranty of
-MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
-Lesser General Public License for more details.
-
-You should have received a copy of the GNU Lesser General Public
-License along with this library; if not, write to the Free Software
-Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
-*/
-
-#ifndef TinyGPS_h
-#define TinyGPS_h
-
-#if defined(ARDUINO) && ARDUINO >= 100
-#include "Arduino.h"
-#else
-#include "WProgram.h"
-#endif
-
-#define _GPS_VERSION 12 // software version of this library
-#define _GPS_MPH_PER_KNOT 1.15077945
-#define _GPS_MPS_PER_KNOT 0.51444444
-#define _GPS_KMPH_PER_KNOT 1.852
-#define _GPS_MILES_PER_METER 0.00062137112
-#define _GPS_KM_PER_METER 0.001
-// #define _GPS_NO_STATS
-
-class TinyGPS
-{
-public:
- enum {
- GPS_INVALID_AGE = 0xFFFFFFFF, GPS_INVALID_ANGLE = 999999999,
- GPS_INVALID_ALTITUDE = 999999999, GPS_INVALID_DATE = 0,
- GPS_INVALID_TIME = 0xFFFFFFFF, GPS_INVALID_SPEED = 999999999,
- GPS_INVALID_FIX_TIME = 0xFFFFFFFF, GPS_INVALID_SATELLITES = 0xFF,
- GPS_INVALID_HDOP = 0xFFFFFFFF
- };
-
- static const float GPS_INVALID_F_ANGLE, GPS_INVALID_F_ALTITUDE, GPS_INVALID_F_SPEED;
-
- TinyGPS();
- bool encode(char c); // process one character received from GPS
- TinyGPS &operator << (char c) {encode(c); return *this;}
-
- // lat/long in hundred thousandths of a degree and age of fix in milliseconds
- void get_position(long *latitude, long *longitude, unsigned long *fix_age = 0);
-
- // date as ddmmyy, time as hhmmsscc, and age in milliseconds
- void get_datetime(unsigned long *date, unsigned long *time, unsigned long *age = 0);
-
- // signed altitude in centimeters (from GPGGA sentence)
- inline long altitude() { return _altitude; }
-
- // course in last full GPRMC sentence in 100th of a degree
- inline unsigned long course() { return _course; }
-
- // speed in last full GPRMC sentence in 100ths of a knot
- inline unsigned long speed() { return _speed; }
-
- // satellites used in last full GPGGA sentence
- inline unsigned short satellites() { return _numsats; }
-
- // horizontal dilution of precision in 100ths
- inline unsigned long hdop() { return _hdop; }
-
- void f_get_position(float *latitude, float *longitude, unsigned long *fix_age = 0);
- void crack_datetime(int *year, byte *month, byte *day,
- byte *hour, byte *minute, byte *second, byte *hundredths = 0, unsigned long *fix_age = 0);
- float f_altitude();
- float f_course();
- float f_speed_knots();
- float f_speed_mph();
- float f_speed_mps();
- float f_speed_kmph();
-
- static int library_version() { return _GPS_VERSION; }
-
- static float distance_between (float lat1, float long1, float lat2, float long2);
- static float course_to (float lat1, float long1, float lat2, float long2);
- static const char *cardinal(float course);
-
-#ifndef _GPS_NO_STATS
- void stats(unsigned long *chars, unsigned short *good_sentences, unsigned short *failed_cs);
-#endif
-
-private:
- enum {_GPS_SENTENCE_GPGGA, _GPS_SENTENCE_GPRMC, _GPS_SENTENCE_OTHER};
-
- // properties
- unsigned long _time, _new_time;
- unsigned long _date, _new_date;
- long _latitude, _new_latitude;
- long _longitude, _new_longitude;
- long _altitude, _new_altitude;
- unsigned long _speed, _new_speed;
- unsigned long _course, _new_course;
- unsigned long _hdop, _new_hdop;
- unsigned short _numsats, _new_numsats;
-
- unsigned long _last_time_fix, _new_time_fix;
- unsigned long _last_position_fix, _new_position_fix;
-
- // parsing state variables
- byte _parity;
- bool _is_checksum_term;
- char _term[15];
- byte _sentence_type;
- byte _term_number;
- byte _term_offset;
- bool _gps_data_good;
-
-#ifndef _GPS_NO_STATS
- // statistics
- unsigned long _encoded_characters;
- unsigned short _good_sentences;
- unsigned short _failed_checksum;
- unsigned short _passed_checksum;
-#endif
-
- // internal utilities
- int from_hex(char a);
- unsigned long parse_decimal();
- unsigned long parse_degrees();
- bool term_complete();
- bool gpsisdigit(char c) { return c >= '0' && c <= '9'; }
- long gpsatol(const char *str);
- int gpsstrcmp(const char *str1, const char *str2);
-};
-
-#if !defined(ARDUINO)
-// Arduino 0012 workaround
-#undef int
-#undef char
-#undef long
-#undef byte
-#undef float
-#undef abs
-#undef round
-#endif
-
-#endif