https://github.com/majerle/lwprintf

Lightweight printf library optimized for embedded systems
https://github.com/majerle/lwprintf

embedded embedded-systems hardware library microcontroller output printf snprintf sprintf stdio stdout systems uart

Last synced: about 1 month ago
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Lightweight printf library optimized for embedded systems

• Host: GitHub
• URL: https://github.com/majerle/lwprintf
• Owner: MaJerle
• License: mit
• Created: 2020-03-15T08:57:22.000Z (over 5 years ago)
• Default Branch: develop
• Last Pushed: 2025-05-10T21:44:50.000Z (about 2 months ago)
• Last Synced: 2025-05-10T22:27:21.391Z (about 2 months ago)
• Topics: embedded, embedded-systems, hardware, library, microcontroller, output, printf, snprintf, sprintf, stdio, stdout, systems, uart
• Language: C
• Homepage: https://majerle.eu/projects/lwprintf-lightweight-stdio-manager-printf-snprintf-vprintf-vsnprintf-sprintf
• Size: 858 KB
• Stars: 257
• Watchers: 10
• Forks: 46
• Open Issues: 3
• Metadata Files:
  • Readme: README.md
  • Changelog: CHANGELOG.md
  • Funding: .github/FUNDING.yml
  • License: LICENSE
  • Authors: AUTHORS

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README

        
# Lightweight printf stdio manager

Read first: Documentation



## Features

* Written in C (C11), compatible with ``size_t`` and ``uintmax_t`` types for some specifiers

* Implements output functions compatible with ``printf``, ``vprintf``, ``snprintf``, ``sprintf`` and ``vsnprintf``

* Low-memory footprint, suitable for embedded systems

* Reentrant access to all API functions

* Operating-system ready

* Requires single output function to be implemented by user for ``printf``-like API calls

* With optional functions for operating systems to protect multiple threads printing to the same output stream

* Allows multiple output stream functions (unlike standard ``printf`` which supports only one) to separate parts of application

* Added additional specifiers vs original features

* User friendly MIT license

## Contribute

Fresh contributions are always welcome. Simple instructions to proceed:

1. Fork Github repository

2. Follow [C style & coding rules](https://github.com/MaJerle/c-code-style) already used in the project

3. Create a pull request to develop branch with new features or bug fixes

Alternatively you may:

1. Report a bug

2. Ask for a feature request