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fs_get_ram_lx (FS2)

FSLXnum fs_get_ram_lx( void );

Description

Return the logical extent number of the RAM file system device. This is only available if you have defined FS2_RAM_RESERVE to a non-zero number of bytes in the BIOS.

A RAM filesystem is only really useful if you have battery-backed SRAM on the board. You can still use a RAM file system on volatile RAM, but of course files will not persist over power cycles and you should explicitly format the RAM filesystem at power-up.

The sample program Samples\FILESYSTEM\FS2INFO.C demonstrates use of this function.

This function may be called before calling fs_init().

Return value

 0: There is no RAM filesystem available.
!0: Logical extent number of the RAM device.

Library

FS2.LIB

See also

fs_get_flash_lx (FS2), fs_get_other_lx (FS2)