Hi!

just to let the list know that the sim project is not dead, but just like you I have other (paid) works to complete before. I'm working on it with feedback and testing from Dieter. We're not so far from having something functional for osmocombb. I should have posted an update before, and of course I'll announce when it's complete^W openly publishable.

Let me say that anyone with javacard skills, or willing to develop such skills, is welcome. my code is not in oscombb git yet, but is still available to anyone asking from svn.

Knowning that we're building the world's first free software GSM stack is a good motivation for me, and I'm glad to help where I can.

Regards Sebastien

On Mon, Apr 19, 2010 at 4:35 PM, Harald Welte laforge@gnumonks.org wrote:

Hi!

As you can see, there is not really that much progress throughout the last 2 weeks or so. Dieter and myself were the only two who actually looked at how to driver the DSP, TPU and RF hardware, write the drivers for it and the existing layer1 code. Now we're both busy with other (paid) work, and the project almost seems stuck.

I would like to see this change. I'm quite sure there are some other folks on this list who would be interested in diving in those lower layer bits of the system. However, I also understand there is not all too much that can be done without running your own non-hopping BTS (as we don't do frequency hopping at the moment). So a working OpenBTS, OpenBSC setup or something like a CMD55 or Racal 6103 are a precondition.

Nonetheless, a number of people on this list have access to those devices.

I'd like to encourage some other people to also look at this and remove the dependence on Dieter and myself in that area.

Furthermore, members of the IRC channel have certainly noticed the growing interest in a potential port to the Mediatek chipset based devicees. Mediatek is churning out more than 95 million chipsets every quarter, so there is plenty of phones around.

The data sheets, reference schematics and other training materials can easily be found on a lot of chinese developer websites - as is the Mediatek SDK. However, the critical layer1 and DSP API part is only provided in object code, and the documentation does not document it.

Still I believe it is feasible. So if you want to stay out of the GSM part, feel like the Calypso is too boring for you: Why not work on getting a minimal custom software image for the MT622x running, including bootloader support, keypad/touchscreen and graphics output? If that is done by the wider community, the so-called experts can focus on looking at the GSM side of things once they have time.

Even on the Calypso there are many tasks that still need to be finished, including battery charging, power management, file system, SIM Card API, etc.

If you know somebody who understands C development for microcontrollers and wants to help building the worlds first Free Software GSM baseband chipset software, please motivate them to join. We can really need every helping hand we get.

Happy hacking, Harald --

• Harald Welte laforge@gnumonks.org

http://laforge.gnumonks.org/

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