- Call isInternalStorageSupported will know it the aircraft support interal storage. If returns True, then you call call setStorageStateCallBack to add a listener for storage state. The return will occur for every 10ms. One is internal storage state and ther other one is SD card storage state.
- You can call getStorageLocation to know the current callback is either internal or SD card, then call isInserted to know if an SD card has inserted.