286 lines
11 KiB
C
286 lines
11 KiB
C
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#ifndef NMEAGPS_CFG_H
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#define NMEAGPS_CFG_H
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//------------------------------------------------------
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// Enable/disable the parsing of specific sentences.
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//
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// Configuring out a sentence prevents it from being recognized; it
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// will be completely ignored. (See also NMEAGPS_RECOGNIZE_ALL, below)
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//
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// FYI: Only RMC and ZDA contain date information. Other
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// sentences contain time information. Both date and time are
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// required if you will be doing time_t-to-clock_t operations.
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#define NMEAGPS_PARSE_GGA
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#define NMEAGPS_PARSE_GLL
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#define NMEAGPS_PARSE_GSA
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#define NMEAGPS_PARSE_GSV
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#define NMEAGPS_PARSE_GST
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#define NMEAGPS_PARSE_RMC
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#define NMEAGPS_PARSE_VTG
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#define NMEAGPS_PARSE_ZDA
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//------------------------------------------------------
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// Select which sentence is sent *last* by your GPS device
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// in each update interval. This can be used by your sketch
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// to determine when the GPS quiet time begins, and thus
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// when you can perform "some" time-consuming operations.
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#define LAST_SENTENCE_IN_INTERVAL NMEAGPS::NMEA_RMC
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// If the NMEA_LAST_SENTENCE_IN_INTERVAL is not chosen
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// correctly, GPS data may be lost because the sketch
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// takes too long elsewhere when this sentence is received.
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// Also, fix members may contain information from different
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// time intervals (i.e., they are not coherent).
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//
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// If you don't know which sentence is the last one,
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// use NMEAorder.ino to list them. You do not have to select
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// the last sentence the device sends if you have disabled
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// it. Just select the last sentence that you have *enabled*.
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//------------------------------------------------------
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// Enable/Disable coherency:
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//
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// If you need each fix to contain information that is only
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// from the current update interval, you should uncomment
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// this define. At the beginning of the next interval,
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// the accumulating fix will start out empty. When
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// the LAST_SENTENCE_IN_INTERVAL arrives, the valid
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// fields will be coherent.
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//#define NMEAGPS_COHERENT
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// With IMPLICIT merging, fix() will be emptied when the
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// next sentence begins.
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//
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// With EXPLICIT or NO merging, the fix() was already
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// being initialized.
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//
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// If you use the fix-oriented methods available() and read(),
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// they will empty the current fix for you automatically.
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//
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// If you use the character-oriented method decode(), you should
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// empty the accumulating fix by testing and clearing the
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// 'intervalComplete' flag in the same way that available() does.
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//------------------------------------------------------
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// Choose how multiple sentences are merged:
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// 1) No merging
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// Each sentence fills out its own fix; there could be
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// multiple sentences per interval.
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// 2) EXPLICIT_MERGING
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// All sentences in an interval are *safely* merged into one fix.
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// NMEAGPS_FIX_MAX must be >= 1.
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// An interval is defined by NMEA_LAST_SENTENCE_IN_INTERVAL.
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// 3) IMPLICIT_MERGING
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// All sentences in an interval are merged into one fix, with
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// possible data loss. If a received sentence is rejected for
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// any reason (e.g., a checksum error), all the values are suspect.
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// The fix will be cleared; no members will be valid until new
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// sentences are received and accepted. This uses less RAM.
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// An interval is defined by NMEA_LAST_SENTENCE_IN_INTERVAL.
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// Uncomment zero or one:
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#define NMEAGPS_EXPLICIT_MERGING
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//#define NMEAGPS_IMPLICIT_MERGING
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#ifdef NMEAGPS_IMPLICIT_MERGING
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#define NMEAGPS_MERGING NMEAGPS::IMPLICIT_MERGING
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// When accumulating, nothing is done to the fix at the
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// beginning of every sentence...
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#ifdef NMEAGPS_COHERENT
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// ...unless COHERENT is enabled and a new interval is starting
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#define NMEAGPS_INIT_FIX(m) \
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if (intervalComplete()) { intervalComplete( false ); m.valid.init(); }
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#else
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#define NMEAGPS_INIT_FIX(m)
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#endif
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// ...but we invalidate one part when it starts to get parsed. It *may* get
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// validated when the parsing is finished.
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#define NMEAGPS_INVALIDATE(m) m_fix.valid.m = false
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#else
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#ifdef NMEAGPS_EXPLICIT_MERGING
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#define NMEAGPS_MERGING NMEAGPS::EXPLICIT_MERGING
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#else
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#define NMEAGPS_MERGING NMEAGPS::NO_MERGING
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#define NMEAGPS_NO_MERGING
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#endif
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// When NOT accumulating, invalidate the entire fix at the
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// beginning of every sentence
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#define NMEAGPS_INIT_FIX(m) m.valid.init()
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// ...so the individual parts do not need to be invalidated as they are parsed
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#define NMEAGPS_INVALIDATE(m)
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#endif
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#if ( defined(NMEAGPS_NO_MERGING) + \
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defined(NMEAGPS_IMPLICIT_MERGING) + \
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defined(NMEAGPS_EXPLICIT_MERGING) ) > 1
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#error Only one MERGING technique should be enabled in NMEAGPS_cfg.h!
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#endif
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//------------------------------------------------------
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// Define the fix buffer size. The NMEAGPS object will hold on to
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// this many fixes before an overrun occurs. This can be zero,
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// but you have to be more careful about using gps.fix() structure,
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// because it will be modified as characters are received.
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#define NMEAGPS_FIX_MAX 1
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#if defined(NMEAGPS_EXPLICIT_MERGING) && (NMEAGPS_FIX_MAX == 0)
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#error You must define FIX_MAX >= 1 to allow EXPLICIT merging in NMEAGPS_cfg.h
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#endif
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//------------------------------------------------------
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// Enable/Disable interrupt-style processing of GPS characters
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// If you are using one of the NeoXXSerial libraries,
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// to attachInterrupt, this must be defined.
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// Otherwise, it must be commented out.
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//#define NMEAGPS_INTERRUPT_PROCESSING
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#ifdef NMEAGPS_INTERRUPT_PROCESSING
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#define NMEAGPS_PROCESSING_STYLE NMEAGPS::PS_INTERRUPT
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#else
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#define NMEAGPS_PROCESSING_STYLE NMEAGPS::PS_POLLING
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#endif
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//------------------------------------------------------
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// Enable/disable the talker ID, manufacturer ID and proprietary message processing.
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//
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// First, some background information. There are two kinds of NMEA sentences:
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//
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// 1. Standard NMEA sentences begin with "$ttccc", where
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// "tt" is the talker ID, and
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// "ccc" is the variable-length sentence type (i.e., command).
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//
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// For example, "$GPGLL,..." is a GLL sentence (Geographic Lat/Long)
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// transmitted by talker "GP". This is the most common talker ID. Some
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// devices may report "$GNGLL,..." when a mix of GPS and non-GPS
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// satellites have been used to determine the GLL data.
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//
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// 2. Proprietary NMEA sentences (i.e., those unique to a particular
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// manufacturer) begin with "$Pmmmccc", where
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// "P" is the NMEA-defined prefix indicator for proprietary messages,
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// "mmm" is the 3-character manufacturer ID, and
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// "ccc" is the variable-length sentence type (it can be empty).
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//
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// No validation of manufacturer ID and talker ID is performed in this
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// base class. For example, although "GP" is a common talker ID, it is not
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// guaranteed to be transmitted by your particular device, and it IS NOT
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// REQUIRED. If you need validation of these IDs, or you need to use the
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// extra information provided by some devices, you have two independent
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// options:
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//
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// 1. Enable SAVING the ID: When /decode/ returns DECODE_COMPLETED, the
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// /talker_id/ and/or /mfr_id/ members will contain ID bytes. The entire
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// sentence will be parsed, perhaps modifying members of /fix/. You should
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// enable one or both IDs if you want the information in all sentences *and*
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// you also want to know the ID bytes. This adds two bytes of RAM for the
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// talker ID, and 3 bytes of RAM for the manufacturer ID.
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//
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// 2. Enable PARSING the ID: The virtual /parse_talker_id/ and
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// /parse_mfr_id/ will receive each ID character as it is parsed. If it
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// is not a valid ID, return /false/ to abort processing the rest of the
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// sentence. No CPU time will be wasted on the invalid sentence, and no
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// /fix/ members will be modified. You should enable this if you want to
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// ignore some IDs. You must override /parse_talker_id/ and/or
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// /parse_mfr_id/ in a derived class.
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//
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//#define NMEAGPS_SAVE_TALKER_ID
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//#define NMEAGPS_PARSE_TALKER_ID
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//#define NMEAGPS_PARSE_PROPRIETARY
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#ifdef NMEAGPS_PARSE_PROPRIETARY
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//#define NMEAGPS_SAVE_MFR_ID
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#define NMEAGPS_PARSE_MFR_ID
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#endif
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//------------------------------------------------------
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// Enable/disable tracking the current satellite array and,
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// optionally, all the info for each satellite.
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//
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#define NMEAGPS_PARSE_SATELLITES
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#define NMEAGPS_PARSE_SATELLITE_INFO
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#ifdef NMEAGPS_PARSE_SATELLITES
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#define NMEAGPS_MAX_SATELLITES (20)
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#ifndef GPS_FIX_SATELLITES
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#error GPS_FIX_SATELLITES must be defined in GPSfix.h!
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#endif
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#endif
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#if defined(NMEAGPS_PARSE_SATELLITE_INFO) & \
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!defined(NMEAGPS_PARSE_SATELLITES)
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#error NMEAGPS_PARSE_SATELLITES must be defined!
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#endif
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//------------------------------------------------------
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// Enable/disable gathering interface statistics:
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// CRC errors and number of sentences received
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#define NMEAGPS_STATS
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//------------------------------------------------------
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// Configuration item for allowing derived types of NMEAGPS.
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// If you derive classes from NMEAGPS, you *must* define NMEAGPS_DERIVED_TYPES.
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// If not defined, virtuals are not used, with a slight size (2 bytes) and
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// execution time savings.
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//#define NMEAGPS_DERIVED_TYPES
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#ifdef NMEAGPS_DERIVED_TYPES
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#define NMEAGPS_VIRTUAL virtual
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#else
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#define NMEAGPS_VIRTUAL
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#endif
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//-----------------------------------
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// See if DERIVED_TYPES is required
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#if (defined(NMEAGPS_PARSE_TALKER_ID) | defined(NMEAGPS_PARSE_MFR_ID)) & \
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!defined(NMEAGPS_DERIVED_TYPES)
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#error You must define NMEAGPS_DERIVED_TYPES in NMEAGPS.h in order to parse Talker and/or Mfr IDs!
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#endif
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//------------------------------------------------------
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// Some devices may omit trailing commas at the end of some
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// sentences. This may prevent the last field from being
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// parsed correctly, because the parser for some types keep
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// the value in an intermediate state until the complete
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// field is received (e.g., parseDDDMM, parseFloat and
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// parseZDA).
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//
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// Enabling this will inject a simulated comma when the end
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// of a sentence is received and the last field parser
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// indicated that it still needs one.
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//#define NMEAGPS_COMMA_NEEDED
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//------------------------------------------------------
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// Some applications may want to recognize a sentence type
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// without actually parsing any of the fields. Uncommenting
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// this define will allow the nmeaMessage member to be set
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// when *any* standard message is seen, even though that
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// message is not enabled by a NMEAGPS_PARSE_xxx define above.
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// No valid flags will be true for those sentences.
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#define NMEAGPS_RECOGNIZE_ALL
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//------------------------------------------------------
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// Sometimes, a little extra space is needed to parse an intermediate form.
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// This config items enables extra space.
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#define NMEAGPS_PARSING_SCRATCHPAD
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#endif
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