======nvram_free======
WMPRO, WMMINI FW >= 1.0 WMMEGA FW >= 2.0
Return the number of bytes available in NVRAM
====Description====
int
nvram_free ( )
====Parameters====
None
====Return Values====
Integer: The number of bytes free in NVRAM
====Example====
====See Also====
[[nvram_backup()]] - Backup the contents of NVRAM to a file on the SD Card
[[nvram_defrag()]] - Defragment NVRAM to optimise it
[[nvram_dump()]] - Dump the contents of NVRAM to standard output
[[nvram_restore()]] - Restore the contents of NVRAM from a file