Set watch on $cordovaDeviceOrientation Plugin

cordova
#1

Hello Guys,

Could someone please show how to set a watch on $cordovaDeviceOrientation and automatically update values at frequent intervals?

I tried this code snippet and it updates only on function call. Any help would be highly appreciated.

 $scope.options = {
          frequency: 3000,
          filter: true     
        }

 $scope.myFunction = function () { 
        var watch = $cordovaDeviceOrientation.watchHeading($scope.options).then(
              null,
              function(error) {
               
              },
              function(result) { 
                    $scope.magneticHeading = result.magneticHeading;
                    $scope.trueHeading = result.trueHeading;
                    $scope.accuracy = result.headingAccuracy;
                    $scope.timeStamp = result.timestamp;
          });
     };

Thanks in advance.