Configure the focus mode of the camera
camera_error_t camera_set_focus_mode(camera_handle_t handle, camera_focusmode_t mode)
You can use values defined by camera_focusmode_t to set the focus mode of the camera. Use camera_get_focus_modes() to determine the focus modes that are supported by the current camera.
The viewfinder must be running before using this function.
The focus mode is reset to default when the viewfinder is stopped.
CAMERA_EOK when the function successfully completes, otherwise another camera_error_t value that provides the reason that the call failed.