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88 lines
2.7 KiB
C++
88 lines
2.7 KiB
C++
//
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// GPS Data Logger Program
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//
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// Author: Alex Spataru
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//
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// This program reads GPS data (latitude, longitude, and altitude) from a GPS module
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// connected to an Arduino. It then transmits this data over the serial port for
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// easy viewing on Serial Studio.
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//
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// The program uses the TinyGPS library to parse NMEA sentences from the GPS module.
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// Make sure to download and install the TinyGPS library from the Arduino Library
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// Manager before running this code.
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//
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// Required Libraries:
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// - TinyGPS (Install via Arduino Library Manager)
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//
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// Connections:
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// - Connect the GPS module's TX pin to the RX pin of the Arduino's Serial1.
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// - Ensure your GPS module operates at 9600 baud for compatibility.
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//
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// Baud Rates:
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// - Serial Studio: 115200 baud
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// - GPS Module: 9600 baud
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//
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#include <TinyGPS.h>
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// Initialize a TinyGPS parser instance
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TinyGPS gps;
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// Set up the serial port for GPS communication (using Serial1 for TX/RX pins)
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HardwareSerial &gpsSerial = Serial1;
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// SoftwareSerial gpsSerial(2, 3); // For Arduino UNO/Nano
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// Variables to store GPS position data
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float latitude = 0.0;
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float altitude = 0.0;
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float longitude = 0.0;
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void setup() {
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// Start the primary serial port (Serial Monitor) at a baud rate of 115200
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Serial.begin(115200);
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// Start the GPS serial port at a baud rate of 9600
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gpsSerial.begin(9600);
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// Print an initialization message
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Serial.println("GPS Data Reading Started...");
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}
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void loop() {
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// Read data from the GPS module and encode it using TinyGPS
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while (gpsSerial.available() > 0) {
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char receivedChar = gpsSerial.read();
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gps.encode(receivedChar);
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}
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// Obtain the current position from the GPS module
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unsigned long fixAge;
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long rawLatitude, rawLongitude;
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gps.get_position(&rawLatitude, &rawLongitude, &fixAge);
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// If valid latitude and longitude are received, update the global variables
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if (rawLatitude != TinyGPS::GPS_INVALID_ANGLE) {
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// Convert from TinyGPS format to standard decimal degrees
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latitude = rawLatitude / 1000000.0;
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longitude = rawLongitude / 1000000.0;
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// Get altitude if it is valid, otherwise set altitude to 0
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if (gps.f_altitude() != TinyGPS::GPS_INVALID_F_ALTITUDE) {
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altitude = gps.f_altitude();
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} else {
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altitude = 0.0;
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}
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}
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// Transmit the position data to Serial Studio
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Serial.print('$'); // Frame start sequence
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Serial.print(latitude, 6); // Latitude with 6 decimal places (index = 1)
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Serial.print(','); // Frame separator
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Serial.print(longitude, 6); // Longitude with 6 decimal places (index = 2)
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Serial.print(','); // Frame separator
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Serial.print(altitude, 2); // Altitude with 2 decimal places (index = 3)
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Serial.println(';'); // End of the data packet
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// Wait a little
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delay(5);
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} |