RT-Thread is an open source operating system, which is released under Apache License V2.0 since version 3.1.1.
The peripheral library or firmware library of the chip manufacturer is authorized according to the manufacturer's license, and these files are released according to the original license agreement.
## BSP's License and Coyright:
### apollo2
License: bsd-new
Copyright: Copyright (c) 2017, Ambiq Micro
Path:
- bsp/apollo2/libraries
### at32
License: st-mcd-2.0
Copyright: (c) COPYRIGHT 2018 ArteryTek
Path:
- bsp/at32/at32f407-start/board/msp
------
License: bsd-new
Copyright: Copyright (c) 2010-2015 ARM Limited
Path:
- bsp/at32/Libraries/AT32_Std_Driver/CMSIS
### avr32uc3b0
License: bsd-new
Copyright: Copyright (c) 2009 Atmel Corporation
Path:
- bsp/avr32uc3b0/SOFTWARE_FRAMEWORK
### CME_M7
License: st-mcd-2.0
Copyright: (c) COPYRIGHT 2013 Capital-micro
Path:
- bsp/CME_M7/CMSIS/CME_M7
- bsp/CME_M7/StdPeriph_Driver
------
License: bsd-new
Copyright: Copyright (c) 2009 - 2013 ARM LIMITED
Path:
- bsp/CME_M7/CMSIS/CMSIS
### efm32
License: zlib
Copyright: (C) Copyright 2012 Energy Micro AS, http://www.energymicro.com
Copyright: Copyright (c) 2006 Paolo Abeni (Italy)、Copyright (c) 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997 The Regents of the University of California
Path:
- bsp/simulator/pcap
------
License: zlib
Copyright: Copyright (c) 1997-2017 Sam Lantinga <slouken@libsdl.org>