Process Power On and Off Messages? about qtripp HOT 1 OPEN

lat = GET_D(pos + dp -> lat);
lon = GET_D(pos + dp -> lon);

obj = json_mkobject();

if (!isnan(lat) && !isnan(lon)) {
  json_append_member(obj, "lat", json_mkdouble(lat, 6));
  json_append_member(obj, "lon", json_mkdouble(lon, 6));
  json_append_member(obj, "_type", json_mkstring("location"));
} else {
  json_append_member(obj, "_type", json_mkstring("status"));
}