README: Add "Copyright and license" section.

[sigrok-firmware-fx2lafw.git] / README

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README
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The sigrok project aims at creating a portable, cross-platform,
Free/Libre/Open-Source signal analysis software suite that supports various
device types (such as logic analyzers, oscilloscopes, multimeters, and more).

sigrok-firmware-fx2lafw is a Free/Libre/Open-source firmware for logic
analyzers based on the Cypress EZ-USB FX2(LP) chip.


Status
------

sigrok-firmware-fx2lafw is in a usable state and has had official
tarball releases.


Requirements
------------

 - git
 - make
 - autoconf >= 2.63
 - automake >= 1.11
 - sdcc (>= 2.9.0)

Notes:

 - In order to build fx2lafw you need the 'sdcc' compiler (>= 2.9.0).
   On Debian you can install it via:

     $ apt-get install sdcc

   This project has been tested to work with sdcc 2.9, 3.0, 3.1, and 3.2.

 - You need libsigrok >= 0.1.1 in order to make use of fx2lafw. Earlier
   versions didn't have support for FX2 devices using this firmware.


Building and installing
-----------------------

In order to get the sigrok-firmware-fx2lafw source code and build it, run:

 $ git clone git://sigrok.org/sigrok-firmware-fx2lafw
 $ cd sigrok-firmware-fx2lafw
 $ ./autogen.sh
 $ ./configure
 $ make

For installing sigrok-firmware-fx2lafw:

 $ make install

The generated *.fw files are installed into /usr/local/share/sigrok-firmware.

You can override the install location like this:

 $ ./configure --prefix=/usr

See INSTALL or the following wiki page for more (OS-specific) instructions:

 http://sigrok.org/wiki/Building


Pre-built firmware files
------------------------

There are also pre-built firmware files that can be used without having
to build them from source. You can download those from SourceForge:

  http://sourceforge.net/projects/sigrok/files/binary/sigrok-firmware-fx2lafw/


fx2lib
------

The fx2lafw code uses a (slightly modified) "fx2lib" helper library.

It was imported into fx2lafw from

  git://github.com/ubixum/fx2lib.git

as of Feb 12, 2012 (git hash "416c104cbd").

The following files/directories were removed, as they're not needed
for our purposes: CHANGELOG, COPYING*, docs/, examples/, fw/, and utils/.


Copyright and license
---------------------

sigrok-firmware-fx2lafw is licensed under the terms of the GNU General Public
License (GPL), version 2 or later.

It uses additional helper code (fx2lib), licensed under the GNU LGPL
(version 2.1 or later).

While some individual source code files are licensed under the LGPLv2.1+, and
some files are licensed under the GPLv2+, this doesn't change the fact that
the firmware as a whole is licensed under the terms of the GPLv2+.

Please see the individual source files for the full list of copyright holders.


Mailing lists
-------------

There are two mailing lists for sigrok/sigrok-firmware-fx2lafw:

 https://lists.sourceforge.net/lists/listinfo/sigrok-devel
 https://lists.sourceforge.net/lists/listinfo/sigrok-commits


IRC
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You can find the sigrok developers in the #sigrok IRC channel on Freenode.


Website
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 http://sigrok.org/wiki/Fx2lafw