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All code in /libmaple/usb/usb_lib/ is from v2.0.2 of the standard peripheral
library from STMicroelectronics, which is released with the following notice:

THE PRESENT FIRMWARE WHICH IS FOR GUIDANCE ONLY AIMS AT PROVIDING CUSTOMERS
WITH CODING INFORMATION REGARDING THEIR PRODUCTS IN ORDER FOR THEM TO SAVE TIME.
AS A RESULT, STMICROELECTRONICS SHALL NOT BE HELD LIABLE FOR ANY DIRECT,
INDIRECT OR CONSEQUENTIAL DAMAGES WITH RESPECT TO ANY CLAIMS ARISING FROM THE
CONTENT OF SUCH FIRMWARE AND/OR THE USE MADE BY CUSTOMERS OF THE CODING
INFORMATION CONTAINED HEREIN IN CONNECTION WITH THEIR PRODUCTS.

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Unless otherwise noted in the header, all code in /libmaple/ and /wirish/ is
copyright LeafLabs LLC and are released under the MIT License:

Copyright (c) 2009-2010 LeafLabs LLC

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.

See http://creativecommons.org/licenses/MIT/ for more information.

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Some of files in /support/ld/ were written by 'lanchon' and posted in the
STMicroelectronics forum at:

https://my.st.com/public/STe2ecommunities/mcu/Lists/ARM%20CortexM3%20STM32/flat.aspx?RootFolder=/public/STe2ecommunities/mcu/Lists/ARM%20CortexM3%20STM32/STM32%20CC%2B%2B%20build%20environment%20using%20CodeSourcery%20Sourcery%20G%2B%2B&currentviews=18152

These files are stated to be in the public domain. Other files in /stm32conf/
are from CodeSourcery, Inc with the following notice:

Copyright (c) 2006, 2007 CodeSourcery Inc

The authors hereby grant permission to use, copy, modify, distribute,
and license this software and its documentation for any purpose, provided
that existing copyright notices are retained in all copies and that this
notice is included verbatim in any distributions. No written agreement,
license, or royalty fee is required for any of the authorized uses.
Modifications to this software may be copyrighted by their authors
and need not follow the licensing terms described here, provided that
the new terms are clearly indicated on the first page of each file where
they apply.

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The ./support/stm32loader.py python script is GPL (see
http://www.gnu.org/licenses/ for a copy) and comes with the following info:

    Author: Ivan A-R <ivan@tuxotronic.org>
    Project page: http://tuxotronic.org/wiki/projects/stm32loader

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Note on contributing patches:

If contributing patches, please add a Signed-off-by: line certifying
your Developer Certificate of Origin (DCO).  You should include this
line at the bottom of any Git commits you want merged in, or along
with any email you submit.  By including this line, you are certifying
the following:

  Developer's Certificate of Origin 1.1

  By making a contribution to this project, I certify that:

  (a) The contribution was created in whole or in part by me and I
      have the right to submit it under the open source license
      indicated in the file; or

  (b) The contribution is based upon previous work that, to the best
      of my knowledge, is covered under an appropriate open source
      license and I have the right under that license to submit that
      work with modifications, whether created in whole or in part
      by me, under the same open source license (unless I am
      permitted to submit under a different license), as indicated
      in the file; or

  (c) The contribution was provided directly to me by some other
      person who certified (a), (b) or (c) and I have not modified
      it.

  (d) I understand and agree that this project and the contribution
      are public and that a record of the contribution (including all
      personal information I submit with it, including my sign-off) is
      maintained indefinitely and may be redistributed consistent with
      this project or the open source license(s) involved.