Retrieve the exposure mode from the camera.
camera_error_t camera_get_exposure_mode(camera_handle_t handle, camera_exposuremode_t *mode)
The handle returned by a call to the camera_open() function.
A pointer that is updated with the current auto exposure mode of the camera.
The exposure mode of the camera is returned in the mode argument that you pass to this function.
CAMERA_OK when the function successfully completes, otherwise another camera_error_t value that provides the reason that the call failed.