Licensing
NuttX is available under the Apache 2.0 License. You can find more information about the terms here.
License terms
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------------------------------------------------------------------------------
uIP
===
Many lower-level networking components of NuttX derive from uIP which
has a similar BSD style license:
Copyright (c) 2001-2003, Adam Dunkels.
All rights reserved.
Rhombus Math Library
====================
The math library used in NuttX derives from the Rhombus OS by Nick Johnson
(with many, many addtions). The Rhombus OS is/was distributed under the ISC
license. The ISC licsense is a permissive license that allows people do
anything with your code with proper attribution and without warranty. The
ISC license is functionally equivalent to the BSD 2-Clause and MIT licenses,
removing some language that is no longer necessary.
IGMP
====
IGMP support, if enabled, adds additional logic by Steve Reynolds:
Copyright (c) 2002 CITEL Technologies Ltd.
All rights reserved.
The HID Parser in drivers/usbhost
=================================
Adapted from the LUFA Library (HPND-sell-variant):
Copyright 2011 Dean Camera (dean [at] fourwalledcubicle [dot] com)
dean [at] fourwalledcubicle [dot] com, www.lufa-lib.org
Permission to use, copy, modify, distribute, and sell this
software and its documentation for any purpose is hereby granted
without fee, provided that the above copyright notice appear in
all copies and that both that the copyright notice and this
permission notice and warranty disclaimer appear in supporting
documentation, and that the name of the author not be used in
advertising or publicity pertaining to distribution of the
software without specific, written prior permission.
The author disclaim all warranties with regard to this
software, including all implied warranties of merchantability
and fitness. In no event shall the author be liable for any
special, indirect or consequential damages or any damages
whatsoever resulting from loss of use, data or profits, whether
in an action of contract, negligence or other tortious action,
arising out of or in connection with the use or performance of
this software.
Certain functions in the NuttX C-library derive from other BSD-compatible
sources:
fs/nfs
======
NFS:
Copyright (c) 1989, 1991, 1993, 1995 The Regents of the University of
California. All rights reserved.
and RPC also has:
Copyright (c) 2004 The Regents of the University of Michigan.
Copyright (c) 2004 Weston Andros Adamson <muzzle@umich.edu>.
Copyright (c) 2004 Marius Aamodt Eriksen <marius@umich.edu>.
The University of Michigan uses a modified BSD license equivalent to
the NuttX license. The University of California code uses the original
BSD license and requires that I state the following:
"This product includes software developed by the University of
California, Berkeley and its contributors."
fs/spiffs
=========
The MIT License (MIT)
Copyright (c) 2013-2017 Peter Andersson (pelleplutt1976<at>gmail.com)
Permission is hereby granted, free of charge, to any person obtaining a copy of
this software and associated documentation files (the "Software"), to deal in
the Software without restriction, including without limitation the rights to
use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
the Software, and to permit persons to whom the Software is furnished to do so,
subject to the following conditions:
The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
strtod()
========
Copyright (C) 2002 Michael Ringgaard. All rights reserved.
Copyright (C) 2006-2007 H. Peter Anvin.
dtoa()
======
If you enable floating point conversions with CONFIG_LIBC_FLOATINGPOINT,
then some files with an unmodified BSD license will be included. That
license is similar to the above (modified) BSD license, but has an
additional requirement that I state the following:
"This product includes software developed by the University of
California, Berkeley and its contributors."
libc/string/lib_vikmemcpy.c
===========================
If you enable CONFIG_MEMCPY_VIK, then you will build with the optimized
version of memcpy from Daniel Vik. Licensing information for that version
of memcpy() follows:
Copyright (C) 1999-2010 Daniel Vik
This software is provided 'as-is', without any express or implied
warranty. In no event will the authors be held liable for any
damages arising from the use of this software.
Permission is granted to anyone to use this software for any
purpose, including commercial applications, and to alter it and
redistribute it freely, subject to the following restrictions:
1. The origin of this software must not be misrepresented; you
must not claim that you wrote the original software. If you
use this software in a product, an acknowledgment in the
use this software in a product, an acknowledgment in the
product documentation would be appreciated but is not
required.
2. Altered source versions must be plainly marked as such, and
must not be misrepresented as being the original software.
3. This notice may not be removed or altered from any source
distribution.
libs/libc/math
==============
If you enable CONFIG_LIB, you will build the math library at libc/math.
This library was taken from the math library developed for the Rhombus
OS by Nick Johnson (https://github.com/nickbjohnson4224/rhombus). This
port was contributed by Darcy Gong. The Rhombus math library has this
compatible MIT license:
Copyright (C) 2009-2011 Nick Johnson <nickbjohnson4224 at gmail.com>
Permission to use, copy, modify, and distribute this software for any
purpose with or without fee is hereby granted, provided that the above
copyright notice and this permission notice appear in all copies.
THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
drivers/video/ov2640
====================
WARNING: Some of the information in the data tables in this file came
from other projects with conflicting licenses: Linux and ArduCAM. Those
both have GPL licenses. I am not sure if it is proper or not to lift the
content of those tables and still retain this BSD license. I am guessing
so, but I am not a copyright attorney so you should use this driver in
products at your own risk.
include/nuttx/lcd/ili9488.h
===========================
Copyright (c) 2011, Atmel Corporation
All rights reserved.
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are
met:
- Redistributions of source code must retain the above copyright notice,
this list of conditions and the disclaimer below.
- Atmel's name may not be used to endorse or promote products derived
from this software without specific prior written permission.
DISCLAIMER: THIS SOFTWARE IS PROVIDED BY ATMEL "AS IS" AND ANY EXPRESS OR
IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT ARE
DISCLAIMED. IN NO EVENT SHALL ATMEL BE LIABLE FOR ANY DIRECT, INDIRECT,
INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA,
OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
include/nuttx/input/x11_keysymdef.h
===================================
Copyright 1987, 1994, 1998 The Open Group
Permission to use, copy, modify, distribute, and sell this software and
its documentation for any purpose is hereby granted without fee, provided
that the above copyright notice appear in all copies and that both that
copyright notice and this permission notice appear in supporting
documentation.
The above copyright notice and this permission notice shall be included
in all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
IN NO EVENT SHALL THE OPEN GROUP BE LIABLE FOR ANY CLAIM, DAMAGES OR
OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
OTHER DEALINGS IN THE SOFTWARE.
Except as contained in this notice, the name of The Open Group shall
not be used in advertising or otherwise to promote the sale, use or
other dealings in this Software without prior written authorization
from The Open Group.
Copyright 1987 by Digital Equipment Corporation, Maynard, Massachusetts
All Rights Reserved
Permission to use, copy, modify, and distribute this software and its
documentation for any purpose and without fee is hereby granted,
provided that the above copyright notice appear in all copies and that
both that copyright notice and this permission notice appear in
supporting documentation, and that the name of Digital not be
used in advertising or publicity pertaining to distribution of the
software without specific, written prior permission.
DIGITAL DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING
ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL
DIGITAL BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR
ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION,
ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
SOFTWARE.
arch/xtensa/src/esp32/chip_macros.h
===================================
Copyright (c) 2006-2015 Cadence Design Systems Inc.
Permission is hereby granted, free of charge, to any person obtaining
a copy of this software and associated documentation files (the
"Software"), to deal in the Software without restriction, including
without limitation the rights to use, copy, modify, merge, publish,
distribute, sublicense, and/or sell copies of the Software, and to
permit persons to whom the Software is furnished to do so, subject to
the following conditions:
The above copyright notice and this permission notice shall be included
in all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.