Circular buffers backed by littlefs files.

This library consists of a single header file and a single source file that implement a simple circular data structure. Similar to littlefs itself, the implementation focuses on memory efficiency (adding only a few bytes on top of the required littlefs data structures) and reliability.

Ring buffers support two modes of operation. In "stream" mode, all data is a contiguous sequence of bytes. In "object" mode, the implementation dynamically partitions the buffer to store separate objects, which are variable-length sequences of bytes themselves.