pellepl/spiffs

Health v2 · maintenance only

Adoption not part of the score

1621 stars · 421 forks observed · 2026-08-28

What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-30, confidence not recorded

SPIFFS is a wear-leveled file system for SPI NOR flash devices on embedded targets, written in C. It is designed for small microcontroller targets with sparse RAM, using statically sized buffers and a POSIX-like file API.

Use cases

• store files on SPI NOR flash in an embedded project
• add a file system to a microcontroller with little RAM
• wear-level flash writes on an ESP8266 or similar chip
• read and write config files on embedded flash
• mount a flat file system on NOR flash without directories

When to choose

• you need a small-footprint file system for SPI NOR flash on an MCU
• RAM is scarce and you need statically sized buffers
• you need wear leveling and consistency checks on flash
• your storage is under ~128MB and a flat file namespace is acceptable

When to avoid

• you need directories or hierarchical paths
• you need real-time write latency guarantees
• your flash is larger than ~128MB or has bad blocks needing management
• you need a filesystem maintained with active new development

Facets

library · maturity maintenance

file-system embedded embedded-systems files developer-tools embedded c cross-platform spi-flash wear-leveling nor-flash microcontroller posix-like-api

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