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<HR><A NAME="fat_goto_parentdir"></A><H3> fat_goto_parentdir </H3><TABLE BORDER="0" WIDTH="100 %" BGCOLOR="#D6E8FF" CELLPADDING="6"><TR> <TD VALIGN=MIDDLE><PRE>bit <A HREF="#fat_goto_parentdir">fat_goto_parentdir</A> ( Byte id ) </PRE></TD></TABLE><P>Go to the parent directory<P><TABLE BORDER="0" WIDTH="100 %" BGCOLOR="#FFD0D0" CELLPADDING="6"><TR> <TD VALIGN=MIDDLE><PRE> id: file extension to select*return:</PRE></TD></TABLE><HR><A NAME="fat_goto_prev"></A><H3> fat_goto_prev </H3><TABLE BORDER="0" WIDTH="100 %" BGCOLOR="#D6E8FF" CELLPADDING="6"><TR> <TD VALIGN=MIDDLE><PRE>bit <A HREF="#fat_goto_prev">fat_goto_prev</A> ( void ) </PRE></TD></TABLE><P>Fetch the previous directory info in cache<P><TABLE BORDER="0" WIDTH="100 %" BGCOLOR="#FFD0D0" CELLPADDING="6"><TR> <TD VALIGN=MIDDLE><PRE>*return: - OK: previous file available - KO: first file reached - KO: low_level memory error</PRE></TD></TABLE><HR><A NAME="fat_goto_prev"></A><H3> fat_goto_prev </H3><TABLE BORDER="0" WIDTH="100 %" BGCOLOR="#D6E8FF" CELLPADDING="6"><TR> <TD VALIGN=MIDDLE><PRE>bit <A HREF="#fat_goto_prev">fat_goto_prev</A> ( void ) </PRE></TD></TABLE><P>Fetch the previous directory info in cache<P><TABLE BORDER="0" WIDTH="100 %" BGCOLOR="#FFD0D0" CELLPADDING="6"><TR> <TD VALIGN=MIDDLE><PRE>*return: - OK: previous file available - KO: first file reached - KO: low_level memory error</PRE></TD></TABLE><HR><A NAME="fat_goto_subdir"></A><H3> fat_goto_subdir </H3><TABLE BORDER="0" WIDTH="100 %" BGCOLOR="#D6E8FF" CELLPADDING="6"><TR> <TD VALIGN=MIDDLE><PRE>bit <A HREF="#fat_goto_subdir">fat_goto_subdir</A> ( Byte id ) </PRE></TD></TABLE><P>Go to the subdir if current is a directory<P><TABLE BORDER="0" WIDTH="100 %" BGCOLOR="#FFD0D0" CELLPADDING="6"><TR> <TD VALIGN=MIDDLE><PRE> id: file extension to select*return: - OK: subdir selected - KO: current entry not a directory - KO: low level error</PRE></TD></TABLE><H4> Note </H4><P>Also called by goto_parentdir() with current info from parent info<HR><A NAME="fat_goto_subdir"></A><H3> fat_goto_subdir </H3><TABLE BORDER="0" WIDTH="100 %" BGCOLOR="#D6E8FF" CELLPADDING="6"><TR> <TD VALIGN=MIDDLE><PRE>bit <A HREF="#fat_goto_subdir">fat_goto_subdir</A> ( Byte id ) </PRE></TD></TABLE><P>Go to the subdir if current is a directory<P><TABLE BORDER="0" WIDTH="100 %" BGCOLOR="#FFD0D0" CELLPADDING="6"><TR> <TD VALIGN=MIDDLE><PRE> id: file extension to select*return: - OK: subdir selected - KO: current entry not a directory - KO: low level error</PRE></TD></TABLE><H4> Note </H4><P>Also called by goto_parentdir() with current info from parent info<HR><A NAME="fat_install"></A><H3> fat_install </H3><TABLE BORDER="0" WIDTH="100 %" BGCOLOR="#D6E8FF" CELLPADDING="6"><TR> <TD VALIGN=MIDDLE><PRE>bit iso_install ( void ) </PRE></TD></TABLE><P>Install the iso file system<P><TABLE BORDER="0" WIDTH="100 %" BGCOLOR="#FFD0D0" CELLPADDING="6"><TR> <TD VALIGN=MIDDLE><PRE>*return: - OK: intallation succeeded - KO: no primary or supplementary volume descriptor found </PRE></TD></TABLE><H4> Note </H4><P><P><HR><A NAME="fat_install"></A><H3> fat_install </H3><TABLE BORDER="0" WIDTH="100 %" BGCOLOR="#D6E8FF" CELLPADDING="6"><TR> <TD VALIGN=MIDDLE><PRE>bit iso_install ( void ) </PRE></TD></TABLE><P>Install the iso file system<P><TABLE BORDER="0" WIDTH="100 %" BGCOLOR="#FFD0D0" CELLPADDING="6"><TR> <TD VALIGN=MIDDLE><PRE>*return: - OK: intallation succeeded - KO: no primary or supplementary volume descriptor found </PRE></TD></TABLE><H4> Note </H4><P><P><HR><A NAME="fat_install"></A><H3> fat_install </H3><TABLE BORDER="0" WIDTH="100 %" BGCOLOR="#D6E8FF" CELLPADDING="6"><TR> <TD VALIGN=MIDDLE><PRE>bit iso_install ( void ) </PRE></TD></TABLE><P>Install the iso file system<P><TABLE BORDER="0" WIDTH="100 %" BGCOLOR="#FFD0D0" CELLPADDING="6"><TR> <TD VALIGN=MIDDLE><PRE>*return: - OK: intallation succeeded - KO: no primary or supplementary volume descriptor found </PRE></TD></TABLE><H4> Note </H4><P><P><HR><A NAME="fat_load_sector"></A><H3> fat_load_sector </H3><TABLE BORDER="0" WIDTH="100 %" BGCOLOR="#D6E8FF" CELLPADDING="6"><TR> <TD VALIGN=MIDDLE><PRE>bit <A HREF="#fat_load_sector">fat_load_sector</A> ( Uint32 sector ) </PRE></TD></TABLE><P>This function load a sector in fat_buf_sector<P><TABLE BORDER="0" WIDTH="100 %" BGCOLOR="#FFD0D0" CELLPADDING="6"><TR> <TD VALIGN=MIDDLE><PRE>*return:</PRE></TD></TABLE><HR><A NAME="fat_read_cluster12"></A><H3> fat_read_cluster12 </H3><TABLE BORDER="0" WIDTH="100 %" BGCOLOR="#D6E8FF" CELLPADDING="6"><TR> <TD VALIGN=MIDDLE><PRE>Uint16 fat_read_cluster ( bit init ) </PRE></TD></TABLE><P>Read in fat12 file system a cluster value<P><TABLE BORDER="0" WIDTH="100 %" BGCOLOR="#FFD0D0" CELLPADDING="6"><TR> <TD VALIGN=MIDDLE><PRE> init : initialize the parity bit or notreturn: FAT12 cluster value</PRE></TD></TABLE><H4> Note </H4><P><P><HR><A NAME="fat_refresh_dir_file_info"></A><H3> fat_refresh_dir_file_info </H3><TABLE BORDER="0" WIDTH="100 %" BGCOLOR="#D6E8FF" CELLPADDING="6"><TR> <TD VALIGN=MIDDLE><PRE>void <A HREF="#fat_refresh_dir_file_info">fat_refresh_dir_file_info</A> ( Byte id ) </PRE></TD></TABLE><P>Reconstruct the file directory list and seek to the file pointed byfat_dir_list_index<P><TABLE BORDER="0" WIDTH="100 %" BGCOLOR="#FFD0D0" CELLPADDING="6"><TR> <TD VALIGN=MIDDLE><PRE> return: </PRE></TD></TABLE><H4> Note </H4><P><P><HR><A NAME="fat_refresh_dir_file_info"></A><H3> fat_refresh_dir_file_info </H3><TABLE BORDER="0" WIDTH="100 %" BGCOLOR="#D6E8FF" CELLPADDING="6"><TR> <TD VALIGN=MIDDLE><PRE>void <A HREF="#fat_refresh_dir_file_info">fat_refresh_dir_file_info</A> ( Byte id ) </PRE></TD></TABLE><P>Reconstruct the file directory list and seek to the file pointed byfat_dir_list_index<P><TABLE BORDER="0" WIDTH="100 %" BGCOLOR="#FFD0D0" CELLPADDING="6"><TR> <TD VALIGN=MIDDLE><PRE> return: </PRE></TD></TABLE><H4> Note </H4><P><P><HR><A NAME="fat_save_cluster_info"></A><H3> fat_save_cluster_info </H3><TABLE BORDER="0" WIDTH="100 %" BGCOLOR="#D6E8FF" CELLPADDING="6"><TR> <TD VALIGN=MIDDLE><PRE>void <A HREF="#fat_save_cluster_info">fat_save_cluster_info</A> ( void ) </PRE></TD></TABLE><P>Save in locale variables cluster information for the current opened file- cluster index- number of the cluster- number of bytes in the cluster<P><P><TABLE BORDER="0" WIDTH="100 %" BGCOLOR="#FFD0D0" CELLPADDING="6"><TR> <TD VALIGN=MIDDLE><PRE> *return:</PRE></TD></TABLE><HR><A NAME="fat_save_cluster_info"></A><H3> fat_save_cluster_info </H3><TABLE BORDER="0" WIDTH="100 %" BGCOLOR="#D6E8FF" CELLPADDING="6"><TR> <TD VALIGN=MIDDLE><PRE>void <A HREF="#fat_save_cluster_info">fat_save_cluster_info</A> ( void ) </PRE></TD></TABLE><P>Save in locale variables cluster information for the current opened file- cluster index- number of the cluster- number of bytes in the cluster<P><P><TABLE BORDER="0" WIDTH="100 %" BGCOLOR="#FFD0D0" CELLPADDING="6"><TR> <TD VALIGN=MIDDLE><PRE> *return:</PRE></TD></TABLE><HR><A NAME="fat_seek_entry_record"></A><H3> fat_seek_entry_record </H3><TABLE BORDER="0" WIDTH="100 %" BGCOLOR="#D6E8FF" CELLPADDING="6"><TR> <TD VALIGN=MIDDLE><PRE>bit <A HREF="#fat_seek_entry_record">fat_seek_entry_record</A> ( void ) </PRE></TD></TABLE><P>Fetch the selected entry<P><TABLE BORDER="0" WIDTH="100 %" BGCOLOR="#FFD0D0" CELLPADDING="6"><TR> <TD VALIGN=MIDDLE><PRE> fat_dir_list_index : # of the fetched entry return: OK: file available KO: low level error</PRE></TD></TABLE><HR><A NAME="fat_seek_entry_record"></A><H3> fat_seek_entry_record </H3><TABLE BORDER="0" WIDTH="100 %" BGCOLOR="#D6E8FF" CELLPADDING="6"><TR> <TD VALIGN=MIDDLE><PRE>bit <A HREF="#fat_seek_entry_record">fat_seek_entry_record</A> ( void ) </PRE></TD></TABLE><P>Fetch the selected entry<P><TABLE BORDER="0" WIDTH="100 %" BGCOLOR="#FFD0D0" CELLPADDING="6"><TR> <TD VALIGN=MIDDLE><PRE> fat_dir_list_index : # of the fetched entry return: OK: file available KO: low level error</PRE></TD></TABLE><HR><A NAME="fat_seek_first"></A><H3> fat_seek_first </H3><TABLE BORDER="0" WIDTH="100 %" BGCOLOR="#D6E8FF" CELLPADDING="6"><TR> <TD VALIGN=MIDDLE><PRE>bit <A HREF="#fat_seek_first">fat_seek_first</A> ( void ) </PRE></TD></TABLE><P>Fetch the first directory info in cache<P><TABLE BORDER="0" WIDTH="100 %" BGCOLOR="#FFD0D0" CELLPADDING="6"><TR> <TD VALIGN=MIDDLE><PRE>*return: - OK: first file found - KO: low level error</PRE></TD></TABLE><HR><A NAME="fat_seek_first"></A><H3> fat_seek_first </H3><TABLE BORDER="0" WIDTH="100 %" BGCOLOR="#D6E8FF" CELLPADDING="6"><TR> <TD VALIGN=MIDDLE><PRE>bit <A HREF="#fat_seek_first">fat_seek_first</A> ( void ) </PRE></TD></TABLE><P>Fetch the first directory info in cache<P><TABLE BORDER="0" WIDTH="100 %" BGCOLOR="#FFD0D0" CELLPADDING="6"><TR> <TD VALIGN=MIDDLE><PRE>*return: - OK: first file found - KO: low level error</PRE></TD></TABLE><HR><A NAME="fat_seek_last"></A><H3> fat_seek_last </H3><TABLE BORDER="0" WIDTH="100 %" BGCOLOR="#D6E8FF" CELLPADDING="6"><TR> <TD VALIGN=MIDDLE><PRE>bit <A HREF="#fat_seek_last">fat_seek_last</A> ( void ) </PRE></TD></TABLE><P>Fetch the last directory info in cache<P><TABLE BORDER="0" WIDTH="100 %" BGCOLOR="#FFD0D0" CELLPADDING="6"><TR> <TD VALIGN=MIDDLE><PRE>*return: OK: last file available KO: low level error</PRE></TD></TABLE><HR><A NAME="fat_seek_last"></A><H3> fat_seek_last </H3><TABLE BORDER="0" WIDTH="100 %" BGCOLOR="#D6E8FF" CELLPADDING="6"><TR> <TD VALIGN=MIDDLE><PRE>bit <A HREF="#fat_seek_last">fat_seek_last</A> ( void ) </PRE></TD></TABLE><P>Fetch the last directory info in cache<P><TABLE BORDER="0" WIDTH="100 %" BGCOLOR="#FFD0D0" CELLPADDING="6"><TR> <TD VALIGN=MIDDLE><PRE>*return: OK: last file available KO: low level error</PRE></TD></TABLE><HR><A NAME="fat_set_clusters"></A><H3> fat_set_clusters </H3><TABLE BORDER="0" WIDTH="100 %" BGCOLOR="#D6E8FF" CELLPADDING="6"><TR> <TD VALIGN=MIDDLE><PRE>bit <A HREF="#fat_set_clusters">fat_set_clusters</A> ( void ) </PRE></TD></TABLE><P>Prepare a list of the free clusters:chain[n].cluster contains the starting cluster number of a fragmentchain[n].number contains the number of contiguous clusters in fragment<P><TABLE BORDER="0" WIDTH="100 %" BGCOLOR="#FFD0D0" CELLPADDING="6"><TR> <TD VALIGN=MIDDLE><PRE>*return: - OK: allocation done - KO: allocation cannot be done : no free cluster</PRE></TD></TABLE><H4> Note </H4><P>Free cluster list is limited by the nb_frag parameter.If memory is too much fragmented, created file may be limited in size.Last list item always has single cluster<HR><A NAME="fat_up_down_load_sector"></A><H3> fat_up_down_load_sector </H3><TABLE BORDER="0" WIDTH="100 %" BGCOLOR="#D6E8FF" CELLPADDING="6"><TR> <TD VALIGN=MIDDLE><PRE>void <A HREF="#fat_up_down_load_sector">fat_up_down_load_sector</A> ( Uint32 sector , bit up_down ) </PRE></TD>?? 快捷鍵說明
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