70 lines
2.4 KiB
Arduino
70 lines
2.4 KiB
Arduino
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#include <TinyGPSPlus.h>
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#include <SoftwareSerial.h>
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/*
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This sample demonstrates TinyGPSPlus's capacity for extracting custom
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fields from any NMEA sentence. TinyGPSPlus has built-in facilities for
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extracting latitude, longitude, altitude, etc., from the $GPGGA and
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$GPRMC sentences. But with the TinyGPSCustom type, you can extract
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other NMEA fields, even from non-standard NMEA sentences.
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It requires the use of SoftwareSerial, and assumes that you have a
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4800-baud serial GPS device hooked up on pins 4(RX) and 3(TX).
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*/
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static const int RXPin = 4, TXPin = 3;
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static const uint32_t GPSBaud = 4800;
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// The TinyGPSPlus object
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TinyGPSPlus gps;
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// The serial connection to the GPS device
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SoftwareSerial ss(RXPin, TXPin);
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/*
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By declaring TinyGPSCustom objects like this, we announce that we
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are interested in the 15th, 16th, and 17th fields in the $GPGSA
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sentence, respectively the PDOP (F("positional dilution of precision")),
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HDOP (F("horizontal...")), and VDOP (F("vertical...")).
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(Counting starts with the field immediately following the sentence name,
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i.e. $GPGSA. For more information on NMEA sentences, consult your
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GPS module's documentation and/or http://aprs.gids.nl/nmea/.)
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If your GPS module doesn't support the $GPGSA sentence, then you
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won't get any output from this program.
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*/
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TinyGPSCustom pdop(gps, "GPGSA", 15); // $GPGSA sentence, 15th element
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TinyGPSCustom hdop(gps, "GPGSA", 16); // $GPGSA sentence, 16th element
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TinyGPSCustom vdop(gps, "GPGSA", 17); // $GPGSA sentence, 17th element
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void setup()
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{
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Serial.begin(115200);
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ss.begin(GPSBaud);
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Serial.println(F("UsingCustomFields.ino"));
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Serial.println(F("Demonstrating how to extract any NMEA field using TinyGPSCustom"));
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Serial.print(F("Testing TinyGPSPlus library v. ")); Serial.println(TinyGPSPlus::libraryVersion());
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Serial.println(F("by Mikal Hart"));
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Serial.println();
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}
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void loop()
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{
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// Every time anything is updated, print everything.
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if (gps.altitude.isUpdated() || gps.satellites.isUpdated() ||
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pdop.isUpdated() || hdop.isUpdated() || vdop.isUpdated())
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{
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Serial.print(F("ALT=")); Serial.print(gps.altitude.meters());
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Serial.print(F(" PDOP=")); Serial.print(pdop.value());
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Serial.print(F(" HDOP=")); Serial.print(hdop.value());
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Serial.print(F(" VDOP=")); Serial.print(vdop.value());
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Serial.print(F(" SATS=")); Serial.println(gps.satellites.value());
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}
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while (ss.available() > 0)
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gps.encode(ss.read());
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}
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