| vmu931
    Library for Variense VMU931 IMU | 
|   vmu | Internal library data passed around by the user | 
|   vmu_data | Structure with multiple types of data returned from the device | 
|   vmu_size | Array sizes for vmu_dataarrays | 
|   vmu_status | Device status - enabled sensors, resolution, rate and streamed data | 
|   vmu_text | Textual data returned by device and library | 
|   vmu_twxyz | Data streamed for Quaternions | 
|   vmu_tx | Data streamed for Heading | 
|   vmu_txyz | Data streamed for Accelerometers, Gyroscopes, Magnetometers and Euler angles |