Commit Graph

3 Commits

Author SHA1 Message Date
Anas Nashif 12984c6d1f subsys: nvs: move to new logger
Move to new logger and update all related samples and configs.

Signed-off-by: Anas Nashif <anas.nashif@intel.com>
2018-10-08 17:49:12 -04:00
Ulf Magnusson 1073882998 subsys: kconfig: Remove 'default n' properties and clean up a bit
Bool symbols implicitly default to 'n'.

A 'default n' can make sense e.g. in a Kconfig.defconfig file, if you
want to override a 'default y' on the base definition of the symbol. It
isn't used like that on any of these symbols though.

Remove some 'default ""' properties on string symbols too.

Also make definitions more consistent by converting some

  config FOO
  	<type>
  	prompt "foo"

definitions to a shorter form:

  config FOO
  	<type> "foo"

This shorthand works for int/hex/string symbols too, not just for bool
symbols.

Signed-off-by: Ulf Magnusson <Ulf.Magnusson@nordicsemi.no>
2018-07-12 23:13:22 -04:00
Laczen JMS b1e45b413e subsys: fs: Add Non Volatile Storage (NVS) for zephyr
Zephyr supports fatfs, nffs and fcb as storage layer. fatfs and nffs
are less suited for application in memory restricted IC's. fcb has a
smaller footprint but has a complex api.

The proposed module is a module with a even smaller footprint compared
to fcb and a simple interface for reading and writing entries. The
module provides wear levelling of flash. This allows the module to be
used not only to store configuration settings but to store device state
(e.g. state of a light switch over reboots) of a zephyr device.

Fixes buffer overflow by introducing maximum read length in nvs_read()
and nvs_read_hist().

Fixes nvs_write() not to reflash the same data. Allows the user to do
call nvs_write() for all defined entries without worries about flash
wear.

Fixes garbage collection error where wrong data could be copied.

Add nvs_delete() to allow deleting a stored entry. A deleted entry will
not be copied to a new flash sector

Include flash wear information in the README.md documentation

0/25 Update module after reviewers remarks, added documentation to
nvs.h, removed README.md by nvs.rst in doc/subsystems folder

04/26 Update module after reviewers remarks, updated nvs.rst, added more
documentation to samples/subsys/nvs/src/main.c, updated doxygen info
in nvs.h (hope this time it works).

04/26 Update subsystems.rst to include nvs.restart

04/27 Updated nvs.c and nvs.h to avoid a possible flash deletion loop
when the file system is full.

04/29 Updated nvs_write to detect and ignore deletes of non-existing
items

05/06 Update NVS module to return standard error codes, removed low
level API, added configuration options. NVS now uses the board dts to
determine the flash storage location (FLASH_AREA_STORAGE_OFFSET).

05/06 Update nvs.rst. Updated intendation and added intermediate
variables in nvs.c to make the code easier to read.

05/06 Update nvs.rst.

05/07 Update nvs.rst

05/08 Changed the API to a more standard file system API.

05/08 Removed cnt_max from nvs_read() as it is not used.

05/08 Removed #ifdef(CONFIG_NVS_LOG) from nvs_priv.h, now the module can
be build with debugging off.

05/09 Removed configuration options for SECTOR_SIZE, SECTOR_COUNT and
MAX_ELEM_SIZE. It is now easy to support multiple NVS filesystems on
one or multiple devices. Changed logging to support newlib systems.
Thanks to Olivier Martin for reporting and proposed changes.

Signed-off-by: Laczen JMS <laczenjms@gmail.com>
2018-05-15 10:29:16 +02:00