Use CERN OHL-S 2.0 licence.
diff --git a/LICENSE b/LICENSE
index 261eeb9..114486f 100644
--- a/LICENSE
+++ b/LICENSE
@@ -1,201 +1,289 @@
- Apache License
- Version 2.0, January 2004
- http://www.apache.org/licenses/
+CERN Open Hardware Licence Version 2 - Strongly Reciprocal
- TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
- 1. Definitions.
+Preamble
- "License" shall mean the terms and conditions for use, reproduction,
- and distribution as defined by Sections 1 through 9 of this document.
+CERN has developed this licence to promote collaboration among
+hardware designers and to provide a legal tool which supports the
+freedom to use, study, modify, share and distribute hardware designs
+and products based on those designs. Version 2 of the CERN Open
+Hardware Licence comes in three variants: CERN-OHL-P (permissive); and
+two reciprocal licences: CERN-OHL-W (weakly reciprocal) and this
+licence, CERN-OHL-S (strongly reciprocal).
- "Licensor" shall mean the copyright owner or entity authorized by
- the copyright owner that is granting the License.
+The CERN-OHL-S is copyright CERN 2020. Anyone is welcome to use it, in
+unmodified form only.
- "Legal Entity" shall mean the union of the acting entity and all
- other entities that control, are controlled by, or are under common
- control with that entity. For the purposes of this definition,
- "control" means (i) the power, direct or indirect, to cause the
- direction or management of such entity, whether by contract or
- otherwise, or (ii) ownership of fifty percent (50%) or more of the
- outstanding shares, or (iii) beneficial ownership of such entity.
+Use of this Licence does not imply any endorsement by CERN of any
+Licensor or their designs nor does it imply any involvement by CERN in
+their development.
- "You" (or "Your") shall mean an individual or Legal Entity
- exercising permissions granted by this License.
- "Source" form shall mean the preferred form for making modifications,
- including but not limited to software source code, documentation
- source, and configuration files.
+1 Definitions
- "Object" form shall mean any form resulting from mechanical
- transformation or translation of a Source form, including but
- not limited to compiled object code, generated documentation,
- and conversions to other media types.
+ 1.1 'Licence' means this CERN-OHL-S.
- "Work" shall mean the work of authorship, whether in Source or
- Object form, made available under the License, as indicated by a
- copyright notice that is included in or attached to the work
- (an example is provided in the Appendix below).
+ 1.2 'Compatible Licence' means
- "Derivative Works" shall mean any work, whether in Source or Object
- form, that is based on (or derived from) the Work and for which the
- editorial revisions, annotations, elaborations, or other modifications
- represent, as a whole, an original work of authorship. For the purposes
- of this License, Derivative Works shall not include works that remain
- separable from, or merely link (or bind by name) to the interfaces of,
- the Work and Derivative Works thereof.
+ a) any earlier version of the CERN Open Hardware licence, or
- "Contribution" shall mean any work of authorship, including
- the original version of the Work and any modifications or additions
- to that Work or Derivative Works thereof, that is intentionally
- submitted to Licensor for inclusion in the Work by the copyright owner
- or by an individual or Legal Entity authorized to submit on behalf of
- the copyright owner. For the purposes of this definition, "submitted"
- means any form of electronic, verbal, or written communication sent
- to the Licensor or its representatives, including but not limited to
- communication on electronic mailing lists, source code control systems,
- and issue tracking systems that are managed by, or on behalf of, the
- Licensor for the purpose of discussing and improving the Work, but
- excluding communication that is conspicuously marked or otherwise
- designated in writing by the copyright owner as "Not a Contribution."
+ b) any version of the CERN-OHL-S, or
- "Contributor" shall mean Licensor and any individual or Legal Entity
- on behalf of whom a Contribution has been received by Licensor and
- subsequently incorporated within the Work.
+ c) any licence which permits You to treat the Source to which
+ it applies as licensed under CERN-OHL-S provided that on
+ Conveyance of any such Source, or any associated Product You
+ treat the Source in question as being licensed under
+ CERN-OHL-S.
- 2. Grant of Copyright License. Subject to the terms and conditions of
- this License, each Contributor hereby grants to You a perpetual,
- worldwide, non-exclusive, no-charge, royalty-free, irrevocable
- copyright license to reproduce, prepare Derivative Works of,
- publicly display, publicly perform, sublicense, and distribute the
- Work and such Derivative Works in Source or Object form.
+ 1.3 'Source' means information such as design materials or digital
+ code which can be applied to Make or test a Product or to
+ prepare a Product for use, Conveyance or sale, regardless of its
+ medium or how it is expressed. It may include Notices.
- 3. Grant of Patent License. Subject to the terms and conditions of
- this License, each Contributor hereby grants to You a perpetual,
- worldwide, non-exclusive, no-charge, royalty-free, irrevocable
- (except as stated in this section) patent license to make, have made,
- use, offer to sell, sell, import, and otherwise transfer the Work,
- where such license applies only to those patent claims licensable
- by such Contributor that are necessarily infringed by their
- Contribution(s) alone or by combination of their Contribution(s)
- with the Work to which such Contribution(s) was submitted. If You
- institute patent litigation against any entity (including a
- cross-claim or counterclaim in a lawsuit) alleging that the Work
- or a Contribution incorporated within the Work constitutes direct
- or contributory patent infringement, then any patent licenses
- granted to You under this License for that Work shall terminate
- as of the date such litigation is filed.
+ 1.4 'Covered Source' means Source that is explicitly made available
+ under this Licence.
- 4. Redistribution. You may reproduce and distribute copies of the
- Work or Derivative Works thereof in any medium, with or without
- modifications, and in Source or Object form, provided that You
- meet the following conditions:
+ 1.5 'Product' means any device, component, work or physical object,
+ whether in finished or intermediate form, arising from the use,
+ application or processing of Covered Source.
- (a) You must give any other recipients of the Work or
- Derivative Works a copy of this License; and
+ 1.6 'Make' means to create or configure something, whether by
+ manufacture, assembly, compiling, loading or applying Covered
+ Source or another Product or otherwise.
- (b) You must cause any modified files to carry prominent notices
- stating that You changed the files; and
+ 1.7 'Available Component' means any part, sub-assembly, library or
+ code which:
- (c) You must retain, in the Source form of any Derivative Works
- that You distribute, all copyright, patent, trademark, and
- attribution notices from the Source form of the Work,
- excluding those notices that do not pertain to any part of
- the Derivative Works; and
+ a) is licensed to You as Complete Source under a Compatible
+ Licence; or
- (d) If the Work includes a "NOTICE" text file as part of its
- distribution, then any Derivative Works that You distribute must
- include a readable copy of the attribution notices contained
- within such NOTICE file, excluding those notices that do not
- pertain to any part of the Derivative Works, in at least one
- of the following places: within a NOTICE text file distributed
- as part of the Derivative Works; within the Source form or
- documentation, if provided along with the Derivative Works; or,
- within a display generated by the Derivative Works, if and
- wherever such third-party notices normally appear. The contents
- of the NOTICE file are for informational purposes only and
- do not modify the License. You may add Your own attribution
- notices within Derivative Works that You distribute, alongside
- or as an addendum to the NOTICE text from the Work, provided
- that such additional attribution notices cannot be construed
- as modifying the License.
+ b) is available, at the time a Product or the Source containing
+ it is first Conveyed, to You and any other prospective
+ licensees
- You may add Your own copyright statement to Your modifications and
- may provide additional or different license terms and conditions
- for use, reproduction, or distribution of Your modifications, or
- for any such Derivative Works as a whole, provided Your use,
- reproduction, and distribution of the Work otherwise complies with
- the conditions stated in this License.
+ i) as a physical part with sufficient rights and
+ information (including any configuration and
+ programming files and information about its
+ characteristics and interfaces) to enable it either to
+ be Made itself, or to be sourced and used to Make the
+ Product; or
+ ii) as part of the normal distribution of a tool used to
+ design or Make the Product.
- 5. Submission of Contributions. Unless You explicitly state otherwise,
- 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
- with Licensor regarding such Contributions.
+ 1.8 'Complete Source' means the set of all Source necessary to Make
+ a Product, in the preferred form for making modifications,
+ including necessary installation and interfacing information
+ both for the Product, and for any included Available Components.
+ If the format is proprietary, it must also be made available in
+ a format (if the proprietary tool can create it) which is
+ viewable with a tool available to potential licensees and
+ licensed under a licence approved by the Free Software
+ Foundation or the Open Source Initiative. Complete Source need
+ not include the Source of any Available Component, provided that
+ You include in the Complete Source sufficient information to
+ enable a recipient to Make or source and use the Available
+ Component to Make the Product.
- 6. Trademarks. This License does not grant permission to use the trade
- names, trademarks, service marks, or product names of the Licensor,
- except as required for reasonable and customary use in describing the
- origin of the Work and reproducing the content of the NOTICE file.
+ 1.9 'Source Location' means a location where a Licensor has placed
+ Covered Source, and which that Licensor reasonably believes will
+ remain easily accessible for at least three years for anyone to
+ obtain a digital copy.
- 7. Disclaimer of Warranty. Unless required by applicable law or
- agreed to in writing, Licensor provides the Work (and each
- Contributor provides its Contributions) on an "AS IS" BASIS,
- WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
- implied, including, without limitation, any warranties or conditions
- of TITLE, NON-INFRINGEMENT, MERCHANTABILITY, or FITNESS FOR A
- PARTICULAR PURPOSE. You are solely responsible for determining the
- appropriateness of using or redistributing the Work and assume any
- risks associated with Your exercise of permissions under this License.
+ 1.10 'Notice' means copyright, acknowledgement and trademark notices,
+ Source Location references, modification notices (subsection
+ 3.3(b)) and all notices that refer to this Licence and to the
+ disclaimer of warranties that are included in the Covered
+ Source.
- 8. Limitation of Liability. In no event and under no legal theory,
- whether in tort (including negligence), contract, or otherwise,
- unless required by applicable law (such as deliberate and grossly
- negligent acts) or agreed to in writing, shall any Contributor be
- liable to You for damages, including any direct, indirect, special,
- incidental, or consequential damages of any character arising as a
- result of this License or out of the use or inability to use the
- Work (including but not limited to damages for loss of goodwill,
- work stoppage, computer failure or malfunction, or any and all
- other commercial damages or losses), even if such Contributor
- has been advised of the possibility of such damages.
+ 1.11 'Licensee' or 'You' means any person exercising rights under
+ this Licence.
- 9. Accepting Warranty or Additional Liability. While redistributing
- the Work or Derivative Works thereof, You may choose to offer,
- and charge a fee for, acceptance of support, warranty, indemnity,
- or other liability obligations and/or rights consistent with this
- License. However, in accepting such obligations, You may act only
- on Your own behalf and on Your sole responsibility, not on behalf
- of any other Contributor, and only if You agree to indemnify,
- defend, and hold each Contributor harmless for any liability
- incurred by, or claims asserted against, such Contributor by reason
- of your accepting any such warranty or additional liability.
+ 1.12 'Licensor' means a natural or legal person who creates or
+ modifies Covered Source. A person may be a Licensee and a
+ Licensor at the same time.
- END OF TERMS AND CONDITIONS
+ 1.13 'Convey' means to communicate to the public or distribute.
- APPENDIX: How to apply the Apache License to your work.
- To apply the Apache License to your work, attach the following
- boilerplate notice, with the fields enclosed by brackets "[]"
- replaced with your own identifying information. (Don't include
- the brackets!) The text should be enclosed in the appropriate
- comment syntax for the file format. We also recommend that a
- file or class name and description of purpose be included on the
- same "printed page" as the copyright notice for easier
- identification within third-party archives.
+2 Applicability
- Copyright [yyyy] [name of copyright owner]
+ 2.1 This Licence governs the use, copying, modification, Conveying
+ of Covered Source and Products, and the Making of Products. By
+ exercising any right granted under this Licence, You irrevocably
+ accept these terms and conditions.
- Licensed under the Apache License, Version 2.0 (the "License");
- you may not use this file except in compliance with the License.
- You may obtain a copy of the License at
+ 2.2 This Licence is granted by the Licensor directly to You, and
+ shall apply worldwide and without limitation in time.
- http://www.apache.org/licenses/LICENSE-2.0
+ 2.3 You shall not attempt to restrict by contract or otherwise the
+ rights granted under this Licence to other Licensees.
- Unless required by applicable law or agreed to in writing, software
- distributed under the License is distributed on an "AS IS" BASIS,
- 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.
+ 2.4 This Licence is not intended to restrict fair use, fair dealing,
+ or any other similar right.
+
+
+3 Copying, modifying and Conveying Covered Source
+
+ 3.1 You may copy and Convey verbatim copies of Covered Source, in
+ any medium, provided You retain all Notices.
+
+ 3.2 You may modify Covered Source, other than Notices, provided that
+ You irrevocably undertake to make that modified Covered Source
+ available from a Source Location should You Convey a Product in
+ circumstances where the recipient does not otherwise receive a
+ copy of the modified Covered Source. In each case subsection 3.3
+ shall apply.
+
+ You may only delete Notices if they are no longer applicable to
+ the corresponding Covered Source as modified by You and You may
+ add additional Notices applicable to Your modifications.
+ Including Covered Source in a larger work is modifying the
+ Covered Source, and the larger work becomes modified Covered
+ Source.
+
+ 3.3 You may Convey modified Covered Source (with the effect that You
+ shall also become a Licensor) provided that You:
+
+ a) retain Notices as required in subsection 3.2;
+
+ b) add a Notice to the modified Covered Source stating that You
+ have modified it, with the date and brief description of how
+ You have modified it;
+
+ c) add a Source Location Notice for the modified Covered Source
+ if You Convey in circumstances where the recipient does not
+ otherwise receive a copy of the modified Covered Source; and
+
+ d) license the modified Covered Source under the terms and
+ conditions of this Licence (or, as set out in subsection
+ 8.3, a later version, if permitted by the licence of the
+ original Covered Source). Such modified Covered Source must
+ be licensed as a whole, but excluding Available Components
+ contained in it, which remain licensed under their own
+ applicable licences.
+
+
+4 Making and Conveying Products
+
+You may Make Products, and/or Convey them, provided that You either
+provide each recipient with a copy of the Complete Source or ensure
+that each recipient is notified of the Source Location of the Complete
+Source. That Complete Source is Covered Source, and You must
+accordingly satisfy Your obligations set out in subsection 3.3. If
+specified in a Notice, the Product must visibly and securely display
+the Source Location on it or its packaging or documentation in the
+manner specified in that Notice.
+
+
+5 Research and Development
+
+You may Convey Covered Source, modified Covered Source or Products to
+a legal entity carrying out development, testing or quality assurance
+work on Your behalf provided that the work is performed on terms which
+prevent the entity from both using the Source or Products for its own
+internal purposes and Conveying the Source or Products or any
+modifications to them to any person other than You. Any modifications
+made by the entity shall be deemed to be made by You pursuant to
+subsection 3.2.
+
+
+6 DISCLAIMER AND LIABILITY
+
+ 6.1 DISCLAIMER OF WARRANTY -- The Covered Source and any Products
+ are provided 'as is' and any express or implied warranties,
+ including, but not limited to, implied warranties of
+ merchantability, of satisfactory quality, non-infringement of
+ third party rights, and fitness for a particular purpose or use
+ are disclaimed in respect of any Source or Product to the
+ maximum extent permitted by law. The Licensor makes no
+ representation that any Source or Product does not or will not
+ infringe any patent, copyright, trade secret or other
+ proprietary right. The entire risk as to the use, quality, and
+ performance of any Source or Product shall be with You and not
+ the Licensor. This disclaimer of warranty is an essential part
+ of this Licence and a condition for the grant of any rights
+ granted under this Licence.
+
+ 6.2 EXCLUSION AND LIMITATION OF LIABILITY -- The Licensor shall, to
+ the maximum extent permitted by law, have no liability for
+ direct, indirect, special, incidental, consequential, exemplary,
+ punitive or other damages of any character including, without
+ limitation, procurement of substitute goods or services, loss of
+ use, data or profits, or business interruption, however caused
+ and on any theory of contract, warranty, tort (including
+ negligence), product liability or otherwise, arising in any way
+ in relation to the Covered Source, modified Covered Source
+ and/or the Making or Conveyance of a Product, even if advised of
+ the possibility of such damages, and You shall hold the
+ Licensor(s) free and harmless from any liability, costs,
+ damages, fees and expenses, including claims by third parties,
+ in relation to such use.
+
+
+7 Patents
+
+ 7.1 Subject to the terms and conditions of this Licence, each
+ Licensor hereby grants to You a perpetual, worldwide,
+ non-exclusive, no-charge, royalty-free, irrevocable (except as
+ stated in subsections 7.2 and 8.4) patent license to Make, have
+ Made, use, offer to sell, sell, import, and otherwise transfer
+ the Covered Source and Products, where such licence applies only
+ to those patent claims licensable by such Licensor that are
+ necessarily infringed by exercising rights under the Covered
+ Source as Conveyed by that Licensor.
+
+ 7.2 If You institute patent litigation against any entity (including
+ a cross-claim or counterclaim in a lawsuit) alleging that the
+ Covered Source or a Product constitutes direct or contributory
+ patent infringement, or You seek any declaration that a patent
+ licensed to You under this Licence is invalid or unenforceable
+ then any rights granted to You under this Licence shall
+ terminate as of the date such process is initiated.
+
+
+8 General
+
+ 8.1 If any provisions of this Licence are or subsequently become
+ invalid or unenforceable for any reason, the remaining
+ provisions shall remain effective.
+
+ 8.2 You shall not use any of the name (including acronyms and
+ abbreviations), image, or logo by which the Licensor or CERN is
+ known, except where needed to comply with section 3, or where
+ the use is otherwise allowed by law. Any such permitted use
+ shall be factual and shall not be made so as to suggest any kind
+ of endorsement or implication of involvement by the Licensor or
+ its personnel.
+
+ 8.3 CERN may publish updated versions and variants of this Licence
+ which it considers to be in the spirit of this version, but may
+ differ in detail to address new problems or concerns. New
+ versions will be published with a unique version number and a
+ variant identifier specifying the variant. If the Licensor has
+ specified that a given variant applies to the Covered Source
+ without specifying a version, You may treat that Covered Source
+ as being released under any version of the CERN-OHL with that
+ variant. If no variant is specified, the Covered Source shall be
+ treated as being released under CERN-OHL-S. The Licensor may
+ also specify that the Covered Source is subject to a specific
+ version of the CERN-OHL or any later version in which case You
+ may apply this or any later version of CERN-OHL with the same
+ variant identifier published by CERN.
+
+ 8.4 This Licence shall terminate with immediate effect if You fail
+ to comply with any of its terms and conditions.
+
+ 8.5 However, if You cease all breaches of this Licence, then Your
+ Licence from any Licensor is reinstated unless such Licensor has
+ terminated this Licence by giving You, while You remain in
+ breach, a notice specifying the breach and requiring You to cure
+ it within 30 days, and You have failed to come into compliance
+ in all material respects by the end of the 30 day period. Should
+ You repeat the breach after receipt of a cure notice and
+ subsequent reinstatement, this Licence will terminate
+ immediately and permanently. Section 6 shall continue to apply
+ after any termination.
+
+ 8.6 This Licence shall not be enforceable except by a Licensor
+ acting as such, and third party beneficiary rights are
+ specifically excluded.
