How can I prevent data loss if the power cuts out during logging?

Implement power-safe writing by using file.flush() periodically or after critical data entries. This ensures data is committed to the physical card rather than sitting in a volatile buffer.

Should I use binary or CSV format for embedded logging?

Binary format is roughly 50% smaller and significantly faster to write, which is ideal for high-frequency data. CSV is preferred when human readability and immediate debugging are more important than performance.

Why is my SD card logging performance so slow?

Slow performance is often caused by remaining at the 400kHz initialization frequency. SD cards require 400kHz to start, but can be boosted to 16MHz or higher after initialization for up to 40x faster write speeds.

How do I fix SpiDevice trait errors in embedded-sdmmc 0.8?

Version 0.8+ requires the SpiDevice trait instead of a raw SPI bus. Use ExclusiveDevice from the embedded-hal-bus crate to wrap your SPI bus and CS pin to meet this requirement.

Embedded SD Card Logging

Name: Embedded SD Card Logging
Author: njfdev

bynjfdev

•

분석 및 모니터링

Implements high-performance SD card storage and data logging solutions for embedded Rust applications.

This skill provides specialized guidance for implementing robust SD card storage using the embedded-sdmmc crate in Rust. It addresses critical technical hurdles such as the transition to the SpiDevice trait in version 0.8+, optimizing SPI bus speeds from 400kHz to 16MHz for 40x faster writes, and managing Embassy-RP peripheral types. It offers proven patterns for binary and CSV logging, power-safe writing techniques, and automated file naming, making it an essential resource for developers building flight data recorders, sensor loggers, or any resource-constrained data persistence system.

주요 기능

01Support for both compact binary and human-readable CSV formats

02SPI speed optimization patterns for high-frequency data logging

03Power-safe writing strategies including periodic flushing

04Automated sequential file naming for multiple logging sessions

051 GitHub stars

06Migration support for embedded-sdmmc 0.8+ SpiDevice API requirements

사용 사례

01Developing high-speed flight data recorders for aerospace projects

02Optimizing SD card write performance in embedded Rust systems

03Implementing persistent sensor logging on RP2040 microcontrollers

What are Skills?·How to Install

Install with 🐟 Skill.Fish

npx skillfish add njfdev/ncssm_hpr_2025_payload sd-card-logging

For use in Claude.ai and ChatGPT

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