text: var geo = new xGeo();
  var z = 10;
  geo.getLocation(function (lat, lon) {
  
      let res = geo.latlonToXY(lat, lon, z);
      fetch(`http://a.tile.stamen.com/toner/${z}/${res.x}/${res.y}.png`).then(function (response) {
          return response.blob();
      }).then(function (response) {
          let reader = new FileReader();
          reader.addEventListener('load', () => {
              // reader.result holds a data URL representation of response
              ev3.screen.decodeImage(reader.result);
              geo.toStreet(lat, lon, function (a) {
                  ev3.screen.print(a);
              });
          }, false);
          reader.addEventListener('error', () => {
              reject(reader.error);
          }, false);
          reader.readAsDataURL(response);
      });
  });