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Conditional compilation for Arduino Due. Due support is hardcoded for Serial1 Added due_parsing and due_shield_sdlog examples
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| // Test code for Adafruit GPS modules using MTK3329/MTK3339 driver | ||
| // | ||
| // This code shows how to listen to the GPS module in an interrupt | ||
| // which allows the program to have more 'freedom' - just parse | ||
| // when a new NMEA sentence is available! Then access data when | ||
| // desired. | ||
| // | ||
| // Tested and works great with the Adafruit Ultimate GPS module | ||
| // using MTK33x9 chipset | ||
| // ------> http://www.adafruit.com/products/746 | ||
| // Pick one up today at the Adafruit electronics shop | ||
| // and help support open source hardware & software! -ada | ||
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| #include <Adafruit_GPS.h> | ||
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| #ifdef __AVR__ | ||
| #include <SoftwareSerial.h> | ||
| #endif | ||
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| // If you're using a GPS module: | ||
| // Connect the GPS Power pin to 5V | ||
| // Connect the GPS Ground pin to ground | ||
| // If using software serial (sketch example default): | ||
| // Connect the GPS TX (transmit) pin to Digital 3 | ||
| // Connect the GPS RX (receive) pin to Digital 2 | ||
| // If using hardware serial (e.g. Arduino Mega): | ||
| // Connect the GPS TX (transmit) pin to Arduino RX1, RX2 or RX3 | ||
| // Connect the GPS RX (receive) pin to matching TX1, TX2 or TX3 | ||
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| // If you're using the Adafruit GPS shield, change | ||
| // SoftwareSerial mySerial(3, 2); -> SoftwareSerial mySerial(8, 7); | ||
| // and make sure the switch is set to SoftSerial | ||
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| // If using software serial, keep this line enabled | ||
| // (you can change the pin numbers to match your wiring): | ||
| //SoftwareSerial mySerial(3, 2); | ||
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| // If using hardware serial (e.g. Arduino Mega, Leonardo, Due), comment | ||
| // out the above line and enable this line instead: | ||
| #define mySerial Serial1 | ||
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| Adafruit_GPS GPS(&mySerial); | ||
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| // Set GPSECHO to 'false' to turn off echoing the GPS data to the Serial console | ||
| // Set to 'true' if you want to debug and listen to the raw GPS sentences. | ||
| #define GPSECHO true | ||
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| // this keeps track of whether we're using the interrupt | ||
| // off by default! | ||
| boolean usingInterrupt = false; | ||
| void useInterrupt(boolean); // Func prototype keeps Arduino 0023 happy | ||
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| void setup() | ||
| { | ||
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| // connect at 115200 so we can read the GPS fast enough and echo without dropping chars | ||
| // also spit it out | ||
| Serial.begin(115200); | ||
| Serial.println("Adafruit GPS library basic test!"); | ||
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| // 9600 NMEA is the default baud rate for Adafruit MTK GPS's- some use 4800 | ||
| GPS.begin(9600); | ||
| mySerial.begin(9600); | ||
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| // uncomment this line to turn on RMC (recommended minimum) and GGA (fix data) including altitude | ||
| GPS.sendCommand(PMTK_SET_NMEA_OUTPUT_RMCGGA); | ||
| // uncomment this line to turn on only the "minimum recommended" data | ||
| //GPS.sendCommand(PMTK_SET_NMEA_OUTPUT_RMCONLY); | ||
| // For parsing data, we don't suggest using anything but either RMC only or RMC+GGA since | ||
| // the parser doesn't care about other sentences at this time | ||
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| // Set the update rate | ||
| GPS.sendCommand(PMTK_SET_NMEA_UPDATE_1HZ); // 1 Hz update rate | ||
| // For the parsing code to work nicely and have time to sort thru the data, and | ||
| // print it out we don't suggest using anything higher than 1 Hz | ||
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| // Request updates on antenna status, comment out to keep quiet | ||
| GPS.sendCommand(PGCMD_ANTENNA); | ||
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| // the nice thing about this code is you can have a timer0 interrupt go off | ||
| // every 1 millisecond, and read data from the GPS for you. that makes the | ||
| // loop code a heck of a lot easier! | ||
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| #ifdef __arm__ | ||
| usingInterrupt = false; //NOTE - we don't want to use interrupts on the Due | ||
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| #else | ||
| useInterrupt(true); | ||
| #endif | ||
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| delay(1000); | ||
| // Ask for firmware version | ||
| mySerial.println(PMTK_Q_RELEASE); | ||
| } | ||
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| #ifdef __AVR__ | ||
| // Interrupt is called once a millisecond, looks for any new GPS data, and stores it | ||
| SIGNAL(TIMER0_COMPA_vect) { | ||
| char c = GPS.read(); | ||
| // if you want to debug, this is a good time to do it! | ||
| #ifdef UDR0 | ||
| if (GPSECHO) | ||
| if (c) UDR0 = c; | ||
| // writing direct to UDR0 is much much faster than Serial.print | ||
| // but only one character can be written at a time. | ||
| #endif | ||
| } | ||
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| void useInterrupt(boolean v) { | ||
| if (v) { | ||
| // Timer0 is already used for millis() - we'll just interrupt somewhere | ||
| // in the middle and call the "Compare A" function above | ||
| OCR0A = 0xAF; | ||
| TIMSK0 |= _BV(OCIE0A); | ||
| usingInterrupt = true; | ||
| } else { | ||
| // do not call the interrupt function COMPA anymore | ||
| TIMSK0 &= ~_BV(OCIE0A); | ||
| usingInterrupt = false; | ||
| } | ||
| } | ||
| #endif //#ifdef__AVR__ | ||
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| uint32_t timer = millis(); | ||
| void loop() // run over and over again | ||
| { | ||
| // in case you are not using the interrupt above, you'll | ||
| // need to 'hand query' the GPS, not suggested :( | ||
| if (! usingInterrupt) { | ||
| // read data from the GPS in the 'main loop' | ||
| char c = GPS.read(); | ||
| // if you want to debug, this is a good time to do it! | ||
| if (GPSECHO) | ||
| if (c) Serial.print(c); | ||
| } | ||
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| // if a sentence is received, we can check the checksum, parse it... | ||
| if (GPS.newNMEAreceived()) { | ||
| // a tricky thing here is if we print the NMEA sentence, or data | ||
| // we end up not listening and catching other sentences! | ||
| // so be very wary if using OUTPUT_ALLDATA and trytng to print out data | ||
| //Serial.println(GPS.lastNMEA()); // this also sets the newNMEAreceived() flag to false | ||
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| if (!GPS.parse(GPS.lastNMEA())) // this also sets the newNMEAreceived() flag to false | ||
| return; // we can fail to parse a sentence in which case we should just wait for another | ||
| } | ||
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| // if millis() or timer wraps around, we'll just reset it | ||
| if (timer > millis()) timer = millis(); | ||
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| // approximately every 2 seconds or so, print out the current stats | ||
| if (millis() - timer > 2000) { | ||
| timer = millis(); // reset the timer | ||
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| Serial.print("\nTime: "); | ||
| Serial.print(GPS.hour, DEC); Serial.print(':'); | ||
| Serial.print(GPS.minute, DEC); Serial.print(':'); | ||
| Serial.print(GPS.seconds, DEC); Serial.print('.'); | ||
| Serial.println(GPS.milliseconds); | ||
| Serial.print("Date: "); | ||
| Serial.print(GPS.day, DEC); Serial.print('/'); | ||
| Serial.print(GPS.month, DEC); Serial.print("/20"); | ||
| Serial.println(GPS.year, DEC); | ||
| Serial.print("Fix: "); Serial.print((int)GPS.fix); | ||
| Serial.print(" quality: "); Serial.println((int)GPS.fixquality); | ||
| if (GPS.fix) { | ||
| Serial.print("Location: "); | ||
| Serial.print(GPS.latitude, 4); Serial.print(GPS.lat); | ||
| Serial.print(", "); | ||
| Serial.print(GPS.longitude, 4); Serial.println(GPS.lon); | ||
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| Serial.print("Speed (knots): "); Serial.println(GPS.speed); | ||
| Serial.print("Angle: "); Serial.println(GPS.angle); | ||
| Serial.print("Altitude: "); Serial.println(GPS.altitude); | ||
| Serial.print("Satellites: "); Serial.println((int)GPS.satellites); | ||
| } | ||
| } | ||
| } | ||
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why don't we want to use interrupts on the due?