FreeCalypso update: progress with DSP patches and voice calls

Das Signal das.signal at freecalypso.org
Tue Oct 20 17:20:27 CEST 2015


Hi Mychaela,

Congratulations on your breakthrough re/ the DSP corruption bug!
I will try your suggestion of testing with only FR speech codec,
it will be a quick test. By the way, how do you load this ALSA
scenario on the AP?

I think you are right regarding the LoCosto L1 code: it is quite
possible the source of our other issues, and I concur a careful
disassembly of the GTA02 firmware blobs might be necessary.
Although reading ARM code is not trivial for me, I can try and give
it a shot! And since we have the whole proprietary toolchain in
place, I could verify that the reconstructed C code compiled to the
same assembly code as the pre-compiled blob.

Now regarding on the direction you are considering to take for the
next weeks/months, it's difficult for me to say; what is true is
that your time is quite precious considering the expertise you have
in the matter at hand, so it's probably best to concentrate on tasks
that may require the broad knowledge of Calypso you have, indeed the
hardware side of things is evidently of interest. Now regarding the
PCB design, since I don't really know the subject I can't really
recommend anything -- but on an ethical POV it feels better to help
existing FOSS projects (such as gEDA or Kicad) than being forced to
use proprietary tools because the original Openmoko creators used
them years ago.

--DS


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