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COPYING
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@ -1,296 +0,0 @@
COPYING
=======
Describes the terms under which Nuttx is distributed. A copy of the BSD-
style licensing is included in this file. In my words -- I believe that you
should free to use NuttX in any environment, private, private, commercial,
open, closed, etc. provided only that you respect the modest copyright
notices as described in license (below), respect Trademarks, and include a
copy of the BSD license. Please feel free to contact me if you have any
icensing concerns.
Tool Licenses
-------------
Tools under the nuttx/tools directory are not intended for binary
distribution. You may find other licensing on individual tools in that
directory. If you intend to redistribute these tools in binary form, please
respect the individual license of each tool as identified in the file header
of the tool source files.
Copyright Date Notation
-----------------------
Copyright information is provided in the header of each file. This
copyright information includes the name of the copyright holder and the
year(s) in which copyrighted additions to the file were made to the file.
A comma (',') is used to separate years in the list of years. A hyphen ('-')
is used as a more compact notation when additions were made over several
consecutive years. So for example, "2007, 2011" would mean that copyrighted
additions were made during the years of 2007 and 2011 whereas "2007-2011"
would indicate copyrighted additions in the years 2007, 2008, 2009, 2010,
and 2011.
Copyright Line Continuation
---------------------------
Copy information which exceeds the usable line length may be broken and
continued on the following line, such as:
Copyright (C) 2007-2010, 2012, 2014-2015, 2017 Gregory Nutt. All
rights reserved.
NuttX
=====
License for NuttX in general (authorship and copyright dates on individual
files will vary):
/****************************************************************************
* directory path/filename
*
* Copyright (C) 2007-2019 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <gnutt@nuttx.org>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
* 3. Neither the name NuttX nor the names of its contributors may be
* used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT OWNER OR CONTRIBUTORS 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.
*
****************************************************************************/
FAT Long File Names
===================
NOTE: If CONFIG_FAT_LFN is defined in your NuttX configuration file, then
there may be some legal, patent issues. The following was extracted from
the entry "File Allocation Table from Wikipedia, the free encyclopedia:
"On December 3, 2003 Microsoft announced it would be offering licenses
for use of its FAT specification and 'associated intellectual property',
at the cost of a US$0.25 royalty per unit sold, with a $250,000 maximum
royalty per license agreement.
o "U.S. Patent 5,745,902 (http://www.google.com/patents?vid=5745902) -
Method and system for accessing a file using file names having
different file name formats. ...
o "U.S. Patent 5,579,517 (http://www.google.com/patents?vid=5579517) -
Common name space for long and short filenames. ...
o "U.S. Patent 5,758,352 (http://www.google.com/patents?vid=5758352) -
Common name space for long and short filenames. ...
o "U.S. Patent 6,286,013 (http://www.google.com/patents?vid=6286013) -
Method and system for providing a common name space for long and
short file names in an operating system. ...
"Many technical commentators have concluded that these patents only cover
FAT implementations that include support for long filenames, and that
removable solid state media and consumer devices only using short names
would be unaffected. ..."
This Wikipedia entry has been updated with recent legal decisions in favor
of Microsoft. Refer to:
https://en.wikipedia.org/wiki/File_Allocation_Table#Patents
So you have been forewarned: Use the long filename at your own risk!
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 (MIT license):
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.

18
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Apache NuttX is an effort undergoing incubation at The Apache Software Foundation (ASF),
sponsored by the Apache Incubator. Incubation is required of all newly accepted projects
until a further review indicates that the infrastructure, communications, and decision
making process have stabilized in a manner consistent with other successful ASF projects.
While incubation status is not necessarily a reflection of the completeness or stability
of the code, it does indicate that the project has yet to be fully endorsed by the ASF.
Some of the incubating project's releases may not be fully compliant with ASF policy. For
example, releases may have incomplete or un-reviewed licensing conditions. What follows is
a list of known issues the project is currently aware of (note that this list, by definition,
is likely to be incomplete):
* Releases may have incomplete licensing conditions.
If you are planning to incorporate this work into your product/project, please be aware that
you will need to conduct a thorough licensing review to determine the overall implications of
including this work. For the current status of this project through the Apache Incubator
visit: https://incubator.apache.org/projects/nuttx.html

382
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@ -0,0 +1,382 @@
Apache License
Version 2.0, January 2004
http://www.apache.org/licenses/
TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
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or a Contribution incorporated within the Work constitutes direct
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any Contribution intentionally submitted for inclusion in the Work
by You to the Licensor shall be under the terms and conditions of
this License, without any additional terms or conditions.
Notwithstanding the above, nothing herein shall supersede or modify
the terms of any separate license agreement you may have executed
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6. Trademarks. This License does not grant permission to use the trade
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except as required for reasonable and customary use in describing the
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7. Disclaimer of Warranty. Unless required by applicable law or
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APPENDIX: How to apply the Apache License to your work.
To apply the Apache License to your work, attach the following
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Unless required by applicable law or agreed to in writing, software
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
------------------------------------------------------------------------------
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 (MIT license):
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.

40
NOTICE Normal file
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@ -0,0 +1,40 @@
Apache NuttX
Copyright 2020 The Apache Software Foundation
FAT Long File Names
===================
NOTE: If CONFIG_FAT_LFN is defined in your NuttX configuration file, then
there may be some legal, patent issues. The following was extracted from
the entry "File Allocation Table from Wikipedia, the free encyclopedia:
"On December 3, 2003 Microsoft announced it would be offering licenses
for use of its FAT specification and 'associated intellectual property',
at the cost of a US$0.25 royalty per unit sold, with a $250,000 maximum
royalty per license agreement.
o "U.S. Patent 5,745,902 (http://www.google.com/patents?vid=5745902) -
Method and system for accessing a file using file names having
different file name formats. ...
o "U.S. Patent 5,579,517 (http://www.google.com/patents?vid=5579517) -
Common name space for long and short filenames. ...
o "U.S. Patent 5,758,352 (http://www.google.com/patents?vid=5758352) -
Common name space for long and short filenames. ...
o "U.S. Patent 6,286,013 (http://www.google.com/patents?vid=6286013) -
Method and system for providing a common name space for long and
short file names in an operating system. ...
"Many technical commentators have concluded that these patents only cover
FAT implementations that include support for long filenames, and that
removable solid state media and consumer devices only using short names
would be unaffected. ..."
This Wikipedia entry has been updated with recent legal decisions in favor
of Microsoft. Refer to:
https://en.wikipedia.org/wiki/File_Allocation_Table#Patents
So you have been forewarned: Use the long filename at your own risk!
This product includes software developed at
The Apache Software Foundation (http://www.apache.org/).