From dd40ff0d9522dd01b4f94cb3e22befa01703c279 Mon Sep 17 00:00:00 2001
From: ladyada <limor@ladyada.net>
Date: Sun, 13 Oct 2019 20:22:14 -0400
Subject: [PATCH] parsingdemo

---
 examples/GPS_I2C_Parsing/GPS_I2C_Parsing.ino | 103 +++++++++++++++++++
 1 file changed, 103 insertions(+)
 create mode 100644 examples/GPS_I2C_Parsing/GPS_I2C_Parsing.ino

diff --git a/examples/GPS_I2C_Parsing/GPS_I2C_Parsing.ino b/examples/GPS_I2C_Parsing/GPS_I2C_Parsing.ino
new file mode 100644
index 0000000..6e251d3
--- /dev/null
+++ b/examples/GPS_I2C_Parsing/GPS_I2C_Parsing.ino
@@ -0,0 +1,103 @@
+// Test code for Adafruit GPS That Support Using I2C
+//
+// This code shows how to parse data from the I2C GPS
+//
+// Pick one up today at the Adafruit electronics shop
+// and help support open source hardware & software! -ada
+
+#include <Adafruit_GPS.h>
+
+// Connect to the GPS on the hardware I2C port
+Adafruit_GPS GPS(&Wire);
+
+// 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
+
+uint32_t timer = millis();
+
+
+void setup()
+{
+  //while (!Serial);  // uncomment to have the sketch wait until Serial is ready
+
+  // 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 I2C GPS library basic test!");
+
+  // 9600 NMEA is the default baud rate for Adafruit MTK GPS's- some use 4800
+  GPS.begin(0x10);  // The I2C address to use is 0x10
+  // 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
+  // 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
+
+  // Request updates on antenna status, comment out to keep quiet
+  GPS.sendCommand(PGCMD_ANTENNA);
+
+  delay(1000);
+
+  // Ask for firmware version
+  GPS.println(PMTK_Q_RELEASE);
+}
+
+void loop() // run over and over again
+{
+  // 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);
+  // 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 trying to print out data
+    Serial.println(GPS.lastNMEA()); // this also sets the newNMEAreceived() flag to false
+    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
+  }
+  // if millis() or timer wraps around, we'll just reset it
+  if (timer > millis()) timer = millis();
+
+  // approximately every 2 seconds or so, print out the current stats
+  if (millis() - timer > 2000) {
+    timer = millis(); // reset the timer
+    Serial.print("\nTime: ");
+    if (GPS.hour < 10) { Serial.print('0'); }
+    Serial.print(GPS.hour, DEC); Serial.print(':');
+    if (GPS.minute < 10) { Serial.print('0'); }
+    Serial.print(GPS.minute, DEC); Serial.print(':');
+    if (GPS.seconds < 10) { Serial.print('0'); }
+    Serial.print(GPS.seconds, DEC); Serial.print('.');
+    if (GPS.milliseconds < 10) {
+      Serial.print("00");
+    } else if (GPS.milliseconds > 9 && GPS.milliseconds < 100) {
+      Serial.print("0");
+    }
+    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);
+      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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