zephyr/samples/subsys/shell/fs/README.rst
Peter A. Bigot 5fe2591074 subsys/fs/shell: add littlefs support
Add support for the littlefs file system in the fs shell.  Update
the sample to use the same partition configuration as the littlefs
example for the SPI NOR test platform.

Signed-off-by: Peter A. Bigot <pab@pabigot.com>
2019-08-06 19:39:26 +02:00

166 lines
2.6 KiB
ReStructuredText

.. _shell-fs-sample:
File system shell example
#########################
Overview
********
This example provides shell access to a NFFS file system partition in flash.
Requirements
************
A board with NFFS file system support and UART console
Building
********
Native Posix
============
Before starting a build, make sure that the i386 pkconfig directory is in your
search path and that a 32-bit version of libfuse is installed. For more
background information on this requirement see :ref:`native_posix`.
.. code-block:: console
export PKG_CONFIG_PATH=/usr/lib/i386-linux-gnu/pkgconfig
.. zephyr-app-commands::
:zephyr-app: samples/subsys/shell/fs
:board: native_posix
:goals: build
:compact:
See :ref:`native_posix` on how to connect to the UART.
Reel Board
==========
.. zephyr-app-commands::
:zephyr-app: samples/subsys/shell/fs
:board: reel_board
:goals: build
:compact:
Particle Xenon
==============
This target is customized to support the same SPI NOR partition table as
the :ref:`littlefs-sample`.
.. zephyr-app-commands::
:zephyr-app: samples/subsys/shell/fs
:board: particle_xenon
:goals: build
:compact:
Running
*******
Once the board has booted, you will be presented with a shell prompt.
All file system related commands are available as sub-commands of fs.
Begin by mounting the NFSS file system.
.. code-block:: console
fs mount nffs /nffs
Files System Shell Commands
===========================
Mount
-----
Mount a file system partition to a given mount point
.. code-block:: console
fs mount (nffs|fat) <path>
Ls
--
List all files and directories in a given path
.. code-block:: console
fs ls [path]
Cd
--
Change current working directory to given path
.. code-block:: console
fs cd [path]
Pwd
---
List current working directory
.. code-block:: console
fs pwd
Write
-----
Write hexadecimal numbers to a given file.
Optionally a offset in the file can be given.
.. code-block:: console
fs write <path> [-o <offset>] <hex number> ...
Read
----
Read file and dump in hex and ASCII format
.. code-block:: console
fs read <path>
Trunc
-----
Truncate a given file
.. code-block:: console
fs trunc <path>
Mkdir
-----
Create a directory
.. code-block:: console
fs mkdir <path>
Rm
--
Remove a file or directory
.. code-block:: console
fs rm <path>
Flash Host Access
=================
For the Native POSIX board the flash partitions can be accessed from the host
Linux system.
By default the flash partitions are accessible through the directory *flash*
relative to the directory where the build is started.