From 3f4a1a59480323f3c9666a8363a74336c1412c0f Mon Sep 17 00:00:00 2001
From: Jack Sampson <jcps@mac.com>
Date: Thu, 16 Oct 2014 10:44:05 -0400
Subject: [PATCH 1/2] Addition of Google Maps friendly coordinates

Added a latitudeDegrees, which calculates the GPS position into only
degrees, which Google Maps uses.
---
 Adafruit_GPS.cpp | 12 ++++++++++++
 Adafruit_GPS.h   |  1 +
 2 files changed, 13 insertions(+)

diff --git a/Adafruit_GPS.cpp b/Adafruit_GPS.cpp
index 3bca0de..e0c8c88 100755
--- a/Adafruit_GPS.cpp
+++ b/Adafruit_GPS.cpp
@@ -79,11 +79,14 @@ boolean Adafruit_GPS::parse(char *nmea) {
       minutes = 50 * atol(degreebuff) / 3;
       latitude_fixed = degree + minutes;
       latitude = degree / 100000 + minutes * 0.000006F;
+      latitudeDegrees = (latitude-100*int(latitude/100))/60.0;
+      latitudeDegrees += int(latitude/100);
     }
     
     p = strchr(p, ',')+1;
     if (',' != *p)
     {
+      if (p[0] == 'S') latitudeDegrees *= -1.0;
       if (p[0] == 'N') lat = 'N';
       else if (p[0] == 'S') lat = 'S';
       else if (p[0] == ',') lat = 0;
@@ -105,11 +108,14 @@ boolean Adafruit_GPS::parse(char *nmea) {
       minutes = 50 * atol(degreebuff) / 3;
       longitude_fixed = degree + minutes;
       longitude = degree / 100000 + minutes * 0.000006F;
+      longitudeDegrees = (longitude-100*int(longitude/100))/60.0;
+      longitudeDegrees += int(longitude/100);
     }
     
     p = strchr(p, ',')+1;
     if (',' != *p)
     {
+      if (p[0] == 'W') longitudeDegrees *= -1.0;
       if (p[0] == 'W') lon = 'W';
       else if (p[0] == 'E') lon = 'E';
       else if (p[0] == ',') lon = 0;
@@ -186,11 +192,14 @@ boolean Adafruit_GPS::parse(char *nmea) {
       long minutes = 50 * atol(degreebuff) / 3;
       latitude_fixed = degree + minutes;
       latitude = degree / 100000 + minutes * 0.000006F;
+      latitudeDegrees = (latitude-100*int(latitude/100))/60.0;
+      latitudeDegrees += int(latitude/100);
     }
     
     p = strchr(p, ',')+1;
     if (',' != *p)
     {
+      if (p[0] == 'S') latitudeDegrees *= -1.0;
       if (p[0] == 'N') lat = 'N';
       else if (p[0] == 'S') lat = 'S';
       else if (p[0] == ',') lat = 0;
@@ -212,11 +221,14 @@ boolean Adafruit_GPS::parse(char *nmea) {
       minutes = 50 * atol(degreebuff) / 3;
       longitude_fixed = degree + minutes;
       longitude = degree / 100000 + minutes * 0.000006F;
+      longitudeDegrees = (longitude-100*int(longitude/100))/60.0;
+      longitudeDegrees += int(longitude/100);
     }
     
     p = strchr(p, ',')+1;
     if (',' != *p)
     {
+      if (p[0] == 'W') longitudeDegrees *= -1.0;
       if (p[0] == 'W') lon = 'W';
       else if (p[0] == 'E') lon = 'E';
       else if (p[0] == ',') lon = 0;
diff --git a/Adafruit_GPS.h b/Adafruit_GPS.h
index a417255..2233fba 100755
--- a/Adafruit_GPS.h
+++ b/Adafruit_GPS.h
@@ -134,6 +134,7 @@ class Adafruit_GPS {
   // and minutes stored in units of 1/100000 degrees.  See pull #13 for more details:
   //   https://github.com/adafruit/Adafruit-GPS-Library/pull/13
   int32_t latitude_fixed, longitude_fixed;
+  float latitudeDegrees, longitudeDegrees;
   float geoidheight, altitude;
   float speed, angle, magvariation, HDOP;
   char lat, lon, mag;

From 0aeb82c1b6002c6a86b812070926b96d58b8798d Mon Sep 17 00:00:00 2001
From: Tony DiCola <tony@tonydicola.com>
Date: Fri, 24 Oct 2014 17:38:36 -0700
Subject: [PATCH 2/2] Update parsing example to show new long/lat degrees
 values.

---
 examples/parsing/parsing.pde | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/examples/parsing/parsing.pde b/examples/parsing/parsing.pde
index a4656d3..543a7bf 100644
--- a/examples/parsing/parsing.pde
+++ b/examples/parsing/parsing.pde
@@ -161,6 +161,10 @@ void loop()                     // run over and over again
       Serial.print(GPS.latitude, 4); Serial.print(GPS.lat);
       Serial.print(", "); 
       Serial.print(GPS.longitude, 4); Serial.println(GPS.lon);
+      Serial.print("Location (in degrees, works with Google Maps): ");
+      Serial.print(GPS.latitudeDegrees, 4);
+      Serial.print(", "); 
+      Serial.println(GPS.longitudeDegrees, 4);
       
       Serial.print("Speed (knots): "); Serial.println(GPS.speed);
       Serial.print("Angle: "); Serial.println(GPS.angle);