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Add STM32 FLASH driver

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git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@3573 42af7a65-404d-4744-a932-0658087f49c3
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patacongo 2011-05-07 16:59:20 +00:00
parent 66d5081229
commit 0552c1279b
1 changed files with 42 additions and 5 deletions
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47
Documentation/NuttxPortingGuide.html
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@ -12,7 +12,7 @@
<h1><big><font color="#3c34ec">
<i>NuttX RTOS Porting Guide</i>
</font></big></h1>
<p>Last Updated: April 14, 2011</p>
<p>Last Updated: May 6, 2011</p>
</td>
</tr>
</table>
@ -886,6 +886,9 @@ fs/
|-- fat/
| |-- Make.defs
| `-- <i>(fat file system source files)</i>
|-- nxffs/
| |-- Make.defs
| `-- <i>(NXFFS file system source files)</i>
|-- romfs/
| |-- Make.defs
| `-- <i>(romfs file system source files)</i>
@ -1949,7 +1952,8 @@ extern void up_ledoff(int led);
NuttX supports the standard <code>mount()</code> command that allows
a block driver to be bound to a mountpoint within the pseudo file system
and to a file system.
At present, NuttX supports only the VFAT file system.
At present, NuttX supports the standard VFAT and ROMFS file systems and
well as a special, wear-leveling NuttX FLASH File System (NXFFS).
</p>
<p><b>Comparison to Linux</b>
@ -3120,7 +3124,7 @@ build
<li>
<code>CONFIG_NXFLAT</code>: Enable support for the NXFLAT binary format.
This format will support execution of NuttX binaries located
in a ROMFS filesystem (see <code>apps/examples/nxflat</code>).
in a ROMFS file system (see <code>apps/examples/nxflat</code>).
</li>
<li>
<code>CONFIG_SCHED_WORKQUEUE</code>: Create a dedicated "worker" thread to
@ -3435,13 +3439,46 @@ build
<h2>File Systems</h2>
<ul>
<li>
<code>CONFIG_FS_FAT</code>: Enable FAT filesystem support.
<code>CONFIG_FS_FAT</code>: Enable FAT file system support.
</li>
<li>
<code>CONFIG_FAT_SECTORSIZE</code>: Max supported sector size.
</li>
<li>
<code>CONFIG_FS_ROMFS</code>: Enable ROMFS filesystem support
<code>CONFIG_FS_NXFFS</code>: Enable NuttX FLASH file system (NXFF) support.
</li>
<li>
<code>CONFIG_NXFFS_ERASEDSTATE</code>: The erased state of FLASH.
This must have one of the values of <code>0xff</code> or <code>0x00</code>.
Default: <code>0xff</code>.
</li>
<li>
<code>CONFIG_NXFFS_PACKTHRESHOLD</code>: When packing flash file data,
don't both with file chunks smaller than this number of data bytes.
Default: 32.
</li>
<li>
<code>CONFIG_NXFFS_MAXNAMLEN</code>: The maximum size of an NXFFS file name.
Default: 255.
</li>
<li>
<code>CONFIG_NXFFS_PACKTHRESHOLD</code>: When packing flash file data,
don't both with file chunks smaller than this number of data bytes.
Default: 32.
</li>
<li>
<code>CONFIG_NXFFS_TAILTHRESHOLD</code>: clean-up can either mean
packing files together toward the end of the file or, if file are
deleted at the end of the file, clean up can simply mean erasing
the end of FLASH memory so that it can be re-used again. However,
doing this can also harm the life of the FLASH part because it can
mean that the tail end of the FLASH is re-used too often. This
threshold determines if/when it is worth erased the tail end of FLASH
and making it available for re-use (and possible over-wear).
Default: 8192.
</li>
<li>
<code>CONFIG_FS_ROMFS</code>: Enable ROMFS file system support
</li>
</ul>