84 lines
2.6 KiB
C++
84 lines
2.6 KiB
C++
/*
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Read NMEA sentences over I2C using Ublox module SAM-M8Q, NEO-M8P, etc
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By: Nathan Seidle
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SparkFun Electronics
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Date: August 22nd, 2018
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License: MIT. See license file for more information but you can
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basically do whatever you want with this code.
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This example reads the NMEA characters over I2C and pipes them to MicroNMEA
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This example will output your current long/lat and satellites in view
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Feel like supporting open source hardware?
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Buy a board from SparkFun!
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ZED-F9P RTK2: https://www.sparkfun.com/products/15136
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NEO-M8P RTK: https://www.sparkfun.com/products/15005
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SAM-M8Q: https://www.sparkfun.com/products/15106
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For more MicroNMEA info see https://github.com/stevemarple/MicroNMEA
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Hardware Connections:
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Plug a Qwiic cable into the GPS and a BlackBoard
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If you don't have a platform with a Qwiic connection use the SparkFun Qwiic Breadboard Jumper (https://www.sparkfun.com/products/14425)
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Open the serial monitor at 115200 baud to see the output
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Go outside! Wait ~25 seconds and you should see your lat/long
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*/
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#include <Wire.h> //Needed for I2C to GPS
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#include "SparkFun_Ublox_Arduino_Library.h" //http://librarymanager/All#SparkFun_u-blox_GNSS
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SFE_UBLOX_GPS myGPS;
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#include <MicroNMEA.h> //http://librarymanager/All#MicroNMEA
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char nmeaBuffer[100];
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MicroNMEA nmea(nmeaBuffer, sizeof(nmeaBuffer));
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void setup()
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{
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Serial.begin(115200);
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Serial.println("SparkFun Ublox Example");
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Wire.begin();
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if (myGPS.begin() == false)
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{
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Serial.println(F("Ublox GPS not detected at default I2C address. Please check wiring. Freezing."));
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while (1);
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}
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}
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void loop()
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{
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myGPS.checkUblox(); //See if new data is available. Process bytes as they come in.
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if(nmea.isValid() == true)
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{
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long latitude_mdeg = nmea.getLatitude();
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long longitude_mdeg = nmea.getLongitude();
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Serial.print("Latitude (deg): ");
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Serial.println(latitude_mdeg / 1000000., 6);
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Serial.print("Longitude (deg): ");
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Serial.println(longitude_mdeg / 1000000., 6);
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}
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else
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{
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Serial.print("No Fix - ");
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Serial.print("Num. satellites: ");
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Serial.println(nmea.getNumSatellites());
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}
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delay(250); //Don't pound too hard on the I2C bus
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}
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//This function gets called from the SparkFun Ublox Arduino Library
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//As each NMEA character comes in you can specify what to do with it
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//Useful for passing to other libraries like tinyGPS, MicroNMEA, or even
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//a buffer, radio, etc.
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void SFE_UBLOX_GPS::processNMEA(char incoming)
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{
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//Take the incoming char from the Ublox I2C port and pass it on to the MicroNMEA lib
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//for sentence cracking
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nmea.process(incoming);
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}
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