A safe, fast, and tiny character I/O library for bare-metal and RTOS embedded systems with high-level formatting and low-level control.
emio is a C++ character input/output library tailored for bare-metal and RTOS-based embedded systems. It provides safe, fast, and memory-efficient APIs for formatting, scanning, and low-level I/O operations, solving the problem of bulky or exception-throwing libraries in resource-constrained environments.
Embedded systems developers working on bare-metal or RTOS platforms who need a lightweight, deterministic I/O library without exceptions and with minimal binary footprint.
Developers choose emio for its exceptionally small binary size, exception-free error handling, and dual high-level/low-level API design, which are specifically optimized for embedded constraints unlike general-purpose C++ libraries.
A safe and fast high-level and low-level character input/output library for bare-metal and RTOS based embedded systems with a very small binary footprint.
Open-Awesome is built by the community, for the community. Submit a project, suggest an awesome list, or help improve the catalog on GitHub.
Approximately 38 times smaller than fmtlib, significantly reducing memory usage for embedded devices, as highlighted in the README.
Returns result objects instead of throwing exceptions, ensuring deterministic behavior crucial for bare-metal and RTOS systems.
Provides both high-level formatting/scanning similar to std::format and low-level writer/reader APIs, allowing adaptable use in various embedded scenarios.
APIs can be used at compile-time, enabling metaprogramming and validation for advanced embedded firmware development.
The library is in beta, meaning potential for bugs, incomplete features, or breaking changes as noted in the README's milestone link.
Compared to mature libraries like fmtlib, emio has fewer integrations, tools, and community resources, which could slow development.
Requires a compiler with C++20 support, which might not be available in all embedded toolchains, limiting adoption in legacy environments.