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Addition of Google Maps friendly coordinates 

Added a latitudeDegrees, which calculates the GPS position into only
degrees, which Google Maps uses.
This commit is contained in:
Jack Sampson 2014-10-16 10:44:05 -04:00
parent 04fc848c26
commit 3f4a1a5948
2 changed files with 13 additions and 0 deletions
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12
Adafruit_GPS.cpp
View File

@ -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;

1
Adafruit_GPS.h
View File

@ -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;