1 // Test code for Adafruit GPS modules using MTK3329/MTK3339 driver
3 // This code shows how to listen to the GPS module in an interrupt
4 // which allows the program to have more 'freedom' - just parse
5 // when a new NMEA sentence is available! Then access data when
8 // Tested and works great with the Adafruit Ultimate GPS module
9 // using MTK33x9 chipset
10 // ------> http://www.adafruit.com/products/746
11 // Pick one up today at the Adafruit electronics shop
12 // and help support open source hardware & software! -ada
14 //This code is intended for use with Arduino Leonardo and other ATmega32U4-based Arduinos
16 #include <Adafruit_GPS.h>
17 #include <SoftwareSerial.h>
19 // Connect the GPS Power pin to 5V
20 // Connect the GPS Ground pin to ground
21 // If using software serial (sketch example default):
22 // Connect the GPS TX (transmit) pin to Digital 8
23 // Connect the GPS RX (receive) pin to Digital 7
24 // If using hardware serial:
25 // Connect the GPS TX (transmit) pin to Arduino RX1 (Digital 0)
26 // Connect the GPS RX (receive) pin to matching TX1 (Digital 1)
28 // If using software serial, keep these lines enabled
29 // (you can change the pin numbers to match your wiring):
30 //SoftwareSerial mySerial(8, 7);
31 //Adafruit_GPS GPS(&mySerial);
33 // If using hardware serial, comment
34 // out the above two lines and enable these two lines instead:
35 Adafruit_GPS GPS(&Serial1);
36 HardwareSerial mySerial = Serial1;
38 // Set GPSECHO to 'false' to turn off echoing the GPS data to the Serial console
39 // Set to 'true' if you want to debug and listen to the raw GPS sentences
45 // connect at 115200 so we can read the GPS fast enough and echo without dropping chars
49 Serial.println("Adafruit GPS library basic test!");
51 // 9600 NMEA is the default baud rate for Adafruit MTK GPS's- some use 4800
54 // uncomment this line to turn on RMC (recommended minimum) and GGA (fix data) including altitude
55 GPS.sendCommand(PMTK_SET_NMEA_OUTPUT_RMCGGA);
56 // uncomment this line to turn on only the "minimum recommended" data
57 //GPS.sendCommand(PMTK_SET_NMEA_OUTPUT_RMCONLY);
58 // For parsing data, we don't suggest using anything but either RMC only or RMC+GGA since
59 // the parser doesn't care about other sentences at this time
61 // Set the update rate
62 GPS.sendCommand(PMTK_SET_NMEA_UPDATE_1HZ); // 1 Hz update rate
63 // For the parsing code to work nicely and have time to sort thru the data, and
64 // print it out we don't suggest using anything higher than 1 Hz
66 // Request updates on antenna status, comment out to keep quiet
67 GPS.sendCommand(PGCMD_ANTENNA);
70 // Ask for firmware version
71 mySerial.println(PMTK_Q_RELEASE);
74 uint32_t timer = millis();
75 void loop() // run over and over again
78 // if you want to debug, this is a good time to do it!
82 // if a sentence is received, we can check the checksum, parse it...
83 if (GPS.newNMEAreceived()) {
84 // a tricky thing here is if we print the NMEA sentence, or data
85 // we end up not listening and catching other sentences!
86 // so be very wary if using OUTPUT_ALLDATA and trytng to print out data
87 //Serial.println(GPS.lastNMEA()); // this also sets the newNMEAreceived() flag to false
89 if (!GPS.parse(GPS.lastNMEA())) // this also sets the newNMEAreceived() flag to false
90 return; // we can fail to parse a sentence in which case we should just wait for another
93 // if millis() or timer wraps around, we'll just reset it
94 if (timer > millis()) timer = millis();
96 // approximately every 2 seconds or so, print out the current stats
97 if (millis() - timer > 2000) {
98 timer = millis(); // reset the timer
100 Serial.print("\nTime: ");
101 Serial.print(GPS.hour, DEC); Serial.print(':');
102 Serial.print(GPS.minute, DEC); Serial.print(':');
103 Serial.print(GPS.seconds, DEC); Serial.print('.');
104 Serial.println(GPS.milliseconds);
105 Serial.print("Date: ");
106 Serial.print(GPS.day, DEC); Serial.print('/');
107 Serial.print(GPS.month, DEC); Serial.print("/20");
108 Serial.println(GPS.year, DEC);
109 Serial.print("Fix: "); Serial.print((int)GPS.fix);
110 Serial.print(" quality: "); Serial.println((int)GPS.fixquality);
112 Serial.print("Location: ");
113 Serial.print(GPS.latitude, 4); Serial.print(GPS.lat);
115 Serial.print(GPS.longitude, 4); Serial.println(GPS.lon);
117 Serial.print("Speed (knots): "); Serial.println(GPS.speed);
118 Serial.print("Angle: "); Serial.println(GPS.angle);
119 Serial.print("Altitude: "); Serial.println(GPS.altitude);
120 Serial.print("Satellites: "); Serial.println((int)GPS.satellites);