TactilityC additions (#287)

New TactilityC implementations for:
- WiFi
- GPS
- Preferences
- Timezone

Also includes:
- Some fixes to enums/naming
- Cleanup elsewhere

TactilityC/Source/tt_gps.cpp

@@ -0,0 +1,45 @@
+#include "tt_gps.h"
+#include <Tactility/service/gps/GpsService.h>
+
+using namespace tt::service;
+
+extern "C" {
+
+bool tt_gps_has_coordinates() {
+    auto service = gps::findGpsService();
+    return service != nullptr && service->hasCoordinates();
+}
+
+bool tt_gps_get_coordinates(
+    float* longitude,
+    float* latitude,
+    float* speed,
+    float* course,
+    int* day,
+    int* month,
+    int* year
+) {
+    auto service = gps::findGpsService();
+
+    if (service == nullptr) {
+        return false;
+    }
+
+    minmea_sentence_rmc rmc;
+
+    if (!service->getCoordinates(rmc)) {
+        return false;
+    }
+
+    *longitude = minmea_tocoord(&rmc.longitude);
+    *latitude = minmea_tocoord(&rmc.latitude);
+    *speed = minmea_tocoord(&rmc.speed);
+    *course = minmea_tocoord(&rmc.course);
+    *day = rmc.date.day;
+    *month = rmc.date.month;
+    *year = rmc.date.year;
+
+    return true;
+}
+
+}