The libopencm3 project (previously known as libopenstm32) aims to create a free/libre/open-source (LGPL v3, or later) firmware library for various ARM Cortex-M3 microcontrollers, including ST STM32, Toshiba TX03, Atmel SAM3U, NXP LPC1000 and others.
- 2012/03/02: Project license changed to LGPL V3 or newer
- 2011/11/01: Project renamed to libopencm3
- 2011/10/31: Initial STM32F4 support
- 2011/10/29: Initial STM32F2 support
- 2011/04/02: Initial LuminaryMicro LM3S support
- 2010/12/30: Initial NXP LPC13xx support
- 2010/10/02: STM32 USB device stack support
- 2009/07/20: First working STM32F1 example
- 2009/07/15: Project started
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