# espos_sdlog microSD for espOS: a card over SDMMC or SPI, and sessions of rows on it that survive a power cut, each closed with a row count and a sha256 for the server it is delivered to. ```sh idf.py add-dependency "signalk-espos/espos_sdlog^0.22.0" # x-release-please-version ``` Part of [espOS](https://github.com/signalk-espOS/espOS), an ESP-IDF runtime for Signal K devices. The components are released in lockstep, so one version of `espos_sdlog` works with the same version of every other. **Documentation:** [docs/sdlog.md](https://github.com/signalk-espOS/espOS/blob/main/docs/sdlog.md) **Examples:** * [`sd_logger`](https://github.com/signalk-espOS/espOS/tree/main/components/espos_sdlog/examples/sd_logger) Installed from the registry, `REQUIRES espos_sdlog` in a component's `CMakeLists.txt` resolves it. On the espOS tree as a git submodule it is optional, so the project also names it: `espos_project_prologue(... COMPONENTS espos_sdlog)`. Apache-2.0. Issues and pull requests: [https://github.com/signalk-espOS/espOS/issues](https://github.com/signalk-espOS/espOS/issues).
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idf.py add-dependency "signalk-espos/espos_sdlog^0.22.0"