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// Test code for Adafruit GPS modules using MTK3329/MTK3339 driver | ||
// | ||
// This code erases the LOCUS built-in datalogger storage | ||
// | ||
// 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> | ||
#if ARDUINO >= 100 | ||
#include <SoftwareSerial.h> | ||
#else | ||
// Older Arduino IDE requires NewSoftSerial, download from: | ||
// http://arduiniana.org/libraries/newsoftserial/ | ||
#include <NewSoftwareSerial.h> | ||
// DO NOT install NewSoftSerial if using Arduino 1.0 or later! | ||
#endif | ||
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// 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 using software serial, keep these lines enabled | ||
// (you can change the pin numbers to match your wiring): | ||
#if ARDUINO >= 100 | ||
SoftwareSerial mySerial(3, 2); | ||
#else | ||
NewSoftSerial mySerial(3, 2); | ||
#endif | ||
Adafruit_GPS GPS(&mySerial); | ||
// If using hardware serial (e.g. Arduino Mega), comment | ||
// out the above six lines and enable this line instead: | ||
//Adafruit_GPS GPS(&Serial1); | ||
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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 false | ||
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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() | ||
{ | ||
// connect at 115200 so we can read the GPS fast enuf and | ||
// also spit it out | ||
Serial.begin(115200); | ||
Serial.println("Adafruit GPS erase FLASH!"); | ||
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// 9600 NMEA is the default baud rate for MTK | ||
GPS.begin(9600); | ||
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GPS.sendCommand(PMTK_SET_NMEA_OUTPUT_OFF); | ||
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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! | ||
useInterrupt(true); | ||
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Serial.println("This code will ERASE the data log stored in the FLASH - Permanently!"); | ||
Serial.print("Are you sure you want to do this? [Y/N]: "); | ||
while (Serial.read() != 'Y') delay(10); | ||
Serial.println("\nERASING! UNPLUG YOUR ARDUINO WITHIN 5 SECONDS IF YOU DIDNT MEAN TO!"); | ||
delay(5000); | ||
GPS.sendCommand(PMTK_LOCUS_ERASE_FLASH); | ||
Serial.println("Erased"); | ||
} | ||
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void loop() // run over and over again | ||
{ | ||
// If using hardware serial (e.g. Arduino Mega), change this to Serial1, etc. | ||
if (mySerial.available()) { | ||
char c = mySerial.read(); | ||
if (c) UDR0 = c; | ||
} | ||
} | ||
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/******************************************************************/ | ||
// 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! | ||
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. | ||
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} | ||
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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; | ||
} | ||
} | ||
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