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ESP32: Non-volatile storage support #4436
Description
This feature would be great for storage of configuration parameters, flags and other data in between power cycles or during deep-sleep while avoiding file system corruption which might occur during power outage in case data would stored in the file system (currently the only option).
ESP-IDF provides NVS library:
https://docs.espressif.com/projects/esp-idf/en/latest/api-reference/storage/nvs_flash.html
Activity
dpgeorge commentedon Jan 29, 2019
An alternative filesystem which is robust against power outages during write is LittleFS, and this is due to be integrated soon. See #3847 for more details.
I guess it could be exposed as a module, but it's more Python-like, and portable to other platforms, to use files for this purpose.
dmartauz commentedon Feb 28, 2019
@dpgeorge
A question regarding storage of data in the current implementation of file system in ESP32 port - is it suitable for frequent rewrites of data? I mean is there some wear-leveling mechanism implemented? My goal is to store data in between deep-sleep wake-ups.
Lisa999 commentedon Apr 1, 2019
I have NVS working after making some mods to the source code. However, since @dpgeorge is quite slow with merging PR's i'm not sure whether to put the effort in making a NVS PR....
dmartauz commentedon Apr 2, 2019
Yes, please make a PR, it is worth it.
Which data types are currently supported by your implementation?
Lisa999 commentedon Apr 13, 2019
All data types are support AND i’m using it in my own product. However, as long @dpgeorge is not merging PR #3576 i’m not putting in any effort in a PR that never gets merged....
So here you go @dpgeorge , all or nothing: merge #3576 and i’ll make a PR for the NVS part OR nothing....
esp32: Add basic support for Non-Volatile-Storage in esp32 module.
dpgeorge commentedon Feb 19, 2021
NVS support was added in c10d431
Merge pull request micropython#4436 from weblate/weblate-circuitpytho…
esp32: Add basic support for Non-Volatile-Storage in esp32 module.
esp32: Add basic support for Non-Volatile-Storage in esp32 module.