ReadSensorDIGPSRelativeHeading function.
Read the angle travelled since last request. Resets the request coordinates on the GPS sensor. Sends the angle of travel since the last call.
- Parameters:
-
| _port | The port to which the Dexter Industries GPS sensor is attached. See the NBC Input port constants group. You may use a constant or a variable. |
| _result | The relative heading in degrees |