Commit Graph

26 Commits

Author SHA1 Message Date
Sagar Bijwe
48fccbf5dd nvs_flash: Add support for nvs encryption 2018-09-24 11:25:21 +05:30
Sagar Bijwe
db7c257f33 nvs_flash: Minor changes to NVS documentation
1) Change API doc to reflect new limits on string and blob length.
2) Add "version" field to Page Header structure in README.

Fixes: https://github.com/espressif/esp-idf/issues/2321
2018-09-04 18:51:31 +05:30
Sagar Bijwe
1df85e0039 nvs_flash: Version compatibility check for nvs storage
This change adds a check for compatibility between the nvs version
found on nvs flash and the one assumed by running code during nvs
initialization. Any mismatch is reported to the user using new error
code ESP_ERR_NVS_NEW_VERSION_FOUND.
2018-08-05 00:00:56 +00:00
Ivan Grokhotkov
d9f8311b9d docs: add error codes reference 2018-06-15 15:49:24 +08:00
konstantin
c93626db3f nvs:Add functions for calculating used/free entries
Users needs functions to count the number of free and used entries.

1. `nvs_get_stats()` This function return structure of statistic about the uspace NVS.
(Struct: used_entries, free_entries, total_entries and namespace_count)
2. `nvs_get_used_entry_count()` The second function return amount of entries in the namespace (by handler)
3. Added unit tests.

Closes TW<12282>
2018-04-13 10:34:13 +05:00
Ivan Grokhotkov
f32b25ebe2 nvs_flash: add functions to deinitialize storage 2017-09-19 10:39:44 +08:00
Amey Inamdar
a2dcf7faa8 nvs: Support for handling multiple NVS partitions
This commit adds support for multiple NVS partitions. This provides application a flexibility to have multiple NVS
partitions such as separate partition with read-only manufacturing data and read-write partition with configuration.
Application can also use this to separate out application's configuration storage from system configuration.

This feature does not change any of the basic property of NVS subsystem. The same-named namespaces across partitions are
considered to be different namespaces. The original NVS API available for the applications remains unchanged. The only
difference is that instead of first NVS partition in the partition table, it now operates on the partition with label
"nvs" (which is default in the IDF provided partition table files). Additional APIs are provided to open a handle and
erase NVS with partition name as a parameter.

A test case is added in the host tests and it is made sure that all the host tests pass. nvs_rw_value app is also tested
with multiple partitions.

Signed-off-by: Amey Inamdar <amey.inamdar@gmail.com>
2017-08-22 13:48:14 +05:30
Ivan Grokhotkov
979fce0df5 bt: call nvs_flash_init in examples, show error if NVS is not initialized
NVS is used to store PHY calibration data, WiFi configuration, and BT
configuration. Previously BT examples did not call nvs_flash_init,
relying on the fact that it is called during PHY init. However PHY init
did not handle possible NVS initialization errors.

This change moves PHY init procedure into the application, and adds
diagnostic messages to BT config management routines if NVS is not
initialized.
2017-07-17 21:29:50 +08:00
Simon Werner
dacb053546 ESP_ERR_NVS_VALUE_TOO_LONG had conflicting value.
`ESP_ERR_NVS_VALUE_TOO_LONG` had conflicting value, its original value was `0x0c`, which is the same as `ESP_ERR_NVS_INVALID_LENGTH`
2017-06-27 11:58:49 +12:00
Ivan Grokhotkov
a25a4a0a7c nvs: check value size before writing, document limitations
Writing values longer than half of the page size (with header taken into
account) causes fragmentation issues. Previously it was suggested on the
forum that using long values may cause issues, but this wasn’t checked
in the library itself, and wasn’t documented. This change adds necessary
checks and introduces the new error code.

Documentation is also fixed to reflect the fact that the maximum length
of the key is 15 characters, not 16.
2017-05-31 12:59:24 +08:00
Ivan Grokhotkov
5a23ec4dc4 nvs: check that storage has at least one free page
This change adds a check for the free page count to nvs_flash_init.
Under normal operation, NVS keeps at least one free page available,
except for transient states such as freeing up new page. Due to external
factors (such as NVS partition size reduction) this free page could be
lost, making NVS operation impossible. Previously this would cause an
error when performing any nvs_set operation or opening a new namespace.
With this change, an error is returned from nvs_flash_init to indicate
that NVS partition is in such a state.
2017-03-14 22:03:39 +08:00
Ivan Grokhotkov
817bbb4bf9 nvs: add missing error code descriptions 2017-03-14 22:03:39 +08:00
Ivan Grokhotkov
6e97936bac nvs: allow nvs_flash_init to be called more than once
Also don’t assert in nvs_* functions if nvs_flash_init wasn’t called,
and make nvs_flash_init_custom an internal API for unit tests.
2016-11-18 20:11:16 +08:00
Ivan Grokhotkov
51021b06f8 nvs: initialize using layout from partition table 2016-11-18 20:11:16 +08:00
Ivan Grokhotkov
3bbe41c34d Merge branch 'feature/docs_general_notes' into 'master'
Docs: new documentation and warnings cleanup

This change set

- adds a high-level description of application startup flow. Some parts are missing, but hopefully we can use this description as a base to expand on.
- adds a few notes about memory regions and their use in ESP-IDF.
- add SPI flash and partition APIs page
- fixes all Doxygen warnings in header files
- enables build failures on new Doxygen warnings

See merge request !201
2016-11-17 19:00:03 +08:00
Liu Zhi Fu
936b02216b docs/nvs_flash: update the nvs flash offset comment according review 2016-11-17 11:44:39 +08:00
Ivan Grokhotkov
13d4734399 docs: fix Doxygen warnings, fail CI build on Doxygen warnings 2016-11-16 22:44:22 +08:00
Krzysztof
12efd96fb4 Corrected documentation style
This is for better visuaization with Sphinx
2016-11-01 01:21:18 +08:00
Krzysztof
1263cd340e Add missing annotations 2016-11-01 01:20:04 +08:00
Angus Gratton
a98ab8d801 nvs: Remove flash layout arguments from nvs_init()
Add notes that current NVS layout defaults are a Work In Progress and
not yet integrated with the partition table.
2016-09-27 13:28:45 +10:00
Ivan Grokhotkov
6f2ed934d2 components/nvs: fix broken sentences in comment blocks 2016-09-26 12:41:04 +08:00
Ivan Grokhotkov
2a68f60874 components/nvs: add erase function
This change exposes functions to erase single key and to erase all keys from namespace.
TW6769, TW6839
2016-09-23 08:08:03 +08:00
Ivan Grokhotkov
f06ebeba86 components/nvs: avoid reading just-erased page 2016-09-21 18:02:52 +08:00
Ivan Grokhotkov
7998b6ca2e components/nvs: handle more cases where sudden power off may happen
This commit fixes several issues with state handling in nvs::Page. It also adds extra consistency checks in nvs::PageManger initialization.
These changes were verified with a new long-running test ("test recovery from sudden poweroff"). This test works by repeatedly performing same pseudorandom sequence of calls to nvs_ APIs. Each time it repeats the sequence, it introduces a failure into one of flash operations (write or erase). So if one iteration of this test needs, say, 25000 flash operations, then this test will run 25000 iterations, each time introducing the failure point at different location.
2016-08-23 12:08:00 +08:00
Angus Gratton
9ec0e1545d Standardise remaining uses of SDK to ESP-IDF 2016-08-19 15:01:15 +08:00
Ivan Grokhotkov
bd6ea4393c Initial public version 2016-08-17 23:08:22 +08:00