Function mss_io_default_setting 

pub unsafe extern "C" fn mss_io_default_setting() -> u8

/ /** mss_io_default_setting() This helper function may be useful, e.g. print a message on start-up explaining configuration.

Example:

@code

if ( mss_io_default_setting() == SD_MSSIO_CONFIGURATION ) { // … }

@endcode