Hi Bruce,
It is what it is ☺. I wanted to make sure I understood what is required, higher
ups can decide if it is worth it to use this library.
Thank you for your time.
Cheers,
Marko
From: Bruce Perens [mailto:br...@perens.com]
Sent: Monday, January 15, 2018 11:28 AM
To: freetel-codec2@lists.sourceforge.net
Subject: Re: [Freetel-codec2] Licensing question
Hi Marco,
In this case, you would not use the linker to link codec2 to to the rest of
your software. Codec2 would be uploaded to a fixed address and would have a
jump table at the start of all of the functions that you use within it. Your
proprietary software would simply access codec2 through the jump table. The
available space should be sufficient to allow codec2 to be compiled with GCC
rather than IAR, and to allow some room for improvements and bug fixes, perhaps
a 20% overhead would be sufficient.
I don't know what your proposed interface for reflashing is, if it's USB that
is simple. We also have cheap devices such as the Bus Pirate which can handle
JTAG.
It would also be important not to blow any write fuses in the microprocessor
that would prevent update of codec2 later on.
I'm sorry that this is complicated, the software is free but that doesn't mean
it's a gift.
Thanks
Bruce
On Mon, Jan 15, 2018, 08:56 Marko Milutinovic
<mmilutino...@blacklinesafety.com<mailto:mmilutino...@blacklinesafety.com>>
wrote:
Hi Bruce and Si,
Thank you for the responses. I’ll take this info back and discuss with my group.
Another caveat is that we use a proprietary tool chain for compilation and
linking (IAR). Without the end user having these tools it would be almost
impossible for them to re-link against a newer version of the library. In our
FW it would be impossible to replace the library unless an entire FW update was
performed.
Cheers,
Marko
From: Bruce Perens [mailto:br...@perens.com<mailto:br...@perens.com>]
Sent: Friday, January 12, 2018 7:31 PM
To:
freetel-codec2@lists.sourceforge.net<mailto:freetel-codec2@lists.sourceforge.net>
Subject: Re: [Freetel-codec2] Licensing question
Hi Marko, sorry to do this from my phone but I won't be at my desk until
tomorrow. Your employer is not required to distribute the binary program of
your proprietary code but you must make it possible for the end-user to install
a replacement of codec 2 when it's upgraded. Other manufacturers presently do
this flexradio is an example. I can go over with you further on the phone what
would you be compliant with the license and what wouldn't, no charge for the
call.
Thanks
Bruce
On Fri, Jan 12, 2018, 16:57 Marko Milutinovic
<mmilutino...@blacklinesafety.com<mailto:mmilutino...@blacklinesafety.com>>
wrote:
Hello,
My company has been testing out the CODEC2 library for potential use. Our
application of the CODEC2 library would be in an embedded system that is used
for lone worker safety.
Going over the LGPL 2.1 license one of the clauses is potentially problematic
for us. Sections 5 and 6 require that we provide a way for an end user to be
able to recreate the final executable using a modified version of the library
if they want to. I realize that we don’t have to provide the source code itself
but my company would never allow the release of our binary files either. I’m
not 100% clear if our final firmware compilation (SREC or HEX) qualifies as an
executable file as it can’t run on a generic OS.
Just wondering if anyone can comment on whether or not just linking the library
(with 0 modifications) statically with our firmware would require us to release
binary objects of our main firmware?
Thanks,
Marko
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