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License.txt
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@ -1,126 +1,8 @@
PREFACE
Conceiving and understanding a new license is not an easy task. To make things
easier for both, the author and the licensee, we have decided to base our
license for the USB driver on an existing license with well-understood
properties.
Our favorite choice for the base license was the GNU General Public License
(GPL). However, we cannot use the GNU GPL directly for the following reasons:
(1) It was not intended for projects involving hardware -- we must extend the
term "source code" to at least the circuit diagram.
(2) The GNU GPL does not require publication. Only if a binary is published,
it requires that the source is published as well. This is reasonable for
software because unpublished software is of little relevance. For projects
involving hardware, we want to REQUIRE publication. More than that, we
even want to define HOW the publication must be done (files contained,
file formats etc).
(3) As the author of the software, we can distribute it under more than one
license. For people who don't want to meet the obligations of the GNU GPL,
we want to offer commercial licenses. To avoid a split in revisions of
the driver, we need special privileges to distribute contributed
modifications under proprietary licenses.
We can not simply modify the GNU GPL and incorporate our changes because the
Free Software Foundation (FSF) who holds the copyright for the text of the
GNU GPL does not allow modifications. We therefore set up our own small
license which incorporates the GNU GPL by reference:
LICENSE FOR PROJECTS BUILT WITH "OBJECTIVE DEVELOPMENT'S
FIRMWARE-ONLY USB-DRIVER FOR ATMEL'S AVR MICROCONTROLLERS"
Version 2006-01
I. Definitions
"OBDEV" shall mean OBJECTIVE DEVELOPMENT Software GmbH or any legal successor
thereof.
"Software Source Code" shall mean the preferred form of the software for
making modifications to it.
"USB Driver" shall mean the Software Source Code for OBDEV's firmware-only
USB-driver for Atmel's AVR microcontrollers.
"Function" shall mean the Software Source Code for all software executed on
the microcontroller except the USB Driver.
"Host Software" shall mean the Software Source Code for all software required
to control the USB device from the USB host running any operating system.
"Project" shall mean the USB Driver, the Function, the Host Software, circuit
diagrams of the controller based hardware and accompanying documentation.
"source code" shall have the same meaning as the term "Project" above.
"Web Site" shall mean a collection of text and multimedia documents accessible
worldwide over internet through the HyperText Transfer Protocol (HTTP) on
TCP port 80 (standard HTTP port).
II. General License Terms
The general terms of this license consist of the GNU General Public License
Version 2 (GNU GPL2) which is hereby incorporated into this section as though
it were fully set forth here. A copy of the GNU GPL2 is included for your
convenience in appendix A of this license.
The term "source code" in the GNU GPL2 is to be understood as defined in
section I above. If any term or definition in section I, III, IV or V
conflicts with the GNU GPL2, the term or definition in section I, III, IV or
V has precedence of the GNU GPL2.
III. Distribution of the Project
The distributed form of a Project must contain at least the following files:
(a) Software Source Code files for the USB Driver, the Function and the Host
Software.
(b) Circuit diagrams for the hardware in PDF, PNG or GIF image file format.
(c) A file with name "Readme.txt" in ASCII format with at least the following
content (in English language):
- An explanation what the Project does.
- What to do with the distributed files (installation procedure etc.).
- A reference to Objective Development's USB driver.
- Your (author's) name and contact information. E-mail and/or URL is
sufficient.
(d) Optionally a text file with a description of the circuit diagram, an
explanation of special (software) techniques used etc.
(e) A copy of this license in a file with the name "License.txt". This copy
can be in the "usbdrv" subdirectory which contains the driver.
IV. Requirement for Publication
All modifications and derived work (Projects using the USB Driver) MUST be
distributed (published) as described in section III above on a Web Site. The
main page must reproduce at least a description of the Project (e.g. as
contained in the "Readme.txt" file distributed) and a download link for the
entire Project. The URL of the main page must be submitted to OBDEV. OBDEV
will provide a mechanism for submitting Project URLs and for publishing
Projects on their Web Site. The Project must remain available for at least
twelve (12) months after the initial publication or at least six (6) months
after a subsequent version of that particular Project has been published.
V. Author Privileges
OBDEV reserves the right to distribute the USB Driver and all modified
versions under other (proprietary) licenses. If you modify the USB Driver
under the grants of this license, you therefore grant OBDEV (in addition to
the grants of the GNU GPL2) a worldwide, perpetual, irrevocable royalty free
license for your modifications. OBDEV shall not automatically gain rights
other than those of the GNU GPL2 in the other parts of the Project. This
section V overrides possibly contradicting terms in the GNU GPL2 referenced
in section II.
APPENDIX A
GNU GENERAL PUBLIC LICENSE
Version 2, June 1991
Copyright (C) 1989, 1991 Free Software Foundation, Inc.
59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
Copyright (C) 1989, 1991 Free Software Foundation, Inc.,
51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
Everyone is permitted to copy and distribute verbatim copies
of this license document, but changing it is not allowed.
@ -133,7 +15,7 @@ software--to make sure the software is free for all its users. This
General Public License applies to most of the Free Software
Foundation's software and to any other program whose authors commit to
using it. (Some other Free Software Foundation software is covered by
the GNU Library General Public License instead.) You can apply it to
the GNU Lesser General Public License instead.) You can apply it to
your programs, too.
When we speak of free software, we are referring to freedom, not
@ -173,7 +55,7 @@ patent must be licensed for everyone's free use or not licensed at all.
The precise terms and conditions for copying, distribution and
modification follow.
GNU GENERAL PUBLIC LICENSE
TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION
@ -228,7 +110,7 @@ above, provided that you also meet all of these conditions:
License. (Exception: if the Program itself is interactive but
does not normally print such an announcement, your work based on
the Program is not required to print an announcement.)
These requirements apply to the modified work as a whole. If
identifiable sections of that work are not derived from the Program,
and can be reasonably considered independent and separate works in
@ -286,7 +168,7 @@ access to copy from a designated place, then offering equivalent
access to copy the source code from the same place counts as
distribution of the source code, even though third parties are not
compelled to copy the source along with the object code.
4. You may not copy, modify, sublicense, or distribute the Program
except as expressly provided under this License. Any attempt
otherwise to copy, modify, sublicense or distribute the Program is
@ -343,7 +225,7 @@ impose that choice.
This section is intended to make thoroughly clear what is believed to
be a consequence of the rest of this License.
8. If the distribution and/or use of the Program is restricted in
certain countries either by patents or by copyrighted interfaces, the
original copyright holder who places the Program under this License
@ -396,7 +278,7 @@ PROGRAMS), EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE
POSSIBILITY OF SUCH DAMAGES.
END OF TERMS AND CONDITIONS
How to Apply These Terms to Your New Programs
If you develop a new program, and you want it to be of the greatest
@ -421,10 +303,9 @@ the "copyright" line and a pointer to where the full notice is found.
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
You should have received a copy of the GNU General Public License along
with this program; if not, write to the Free Software Foundation, Inc.,
51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
Also add information on how to contact you by electronic and paper mail.
@ -454,5 +335,5 @@ necessary. Here is a sample; alter the names:
This General Public License does not permit incorporating your program into
proprietary programs. If your program is a subroutine library, you may
consider it more useful to permit linking proprietary applications with the
library. If this is what you want to do, use the GNU Library General
library. If this is what you want to do, use the GNU Lesser General
Public License instead of this License.