FreeCalypso / Osmocom testing (Re: LimeSDR-USB experience with New Splits Solved!)

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Harald Welte laforge at gnumonks.org
Sat Sep 15 09:19:02 UTC 2018


Hi Mychaela,

On Thu, Sep 13, 2018 at 03:53:22PM -0800, Mychaela Falconia wrote:

> Sysmocom has two of my FreeCalypso development boards, 

To clarify: sysmocom != Harald.

I personally have bought one, which I have at home, and sysmocom has
another one (at the sysmocom office/lab).

> The board you've got set up there is the one that did get properly
> calibrated before being sold to Sysmocom.  Like all boards from that
> batch, it was shipped with an official FreeCalypso firmware image in
> its flash - based on the date it was shipped, it was probably the
> 20170831 build.  Do you still have that firmware image in the flash,
> or have you erased it?  

> Where is the RF from that board connected to - does it go to a sysmoBTS unit?

the way it looks, it has been connected to our osmo-gsm-tester setup,
which basically is a coaxial RF distribution network to which a variety
of BTSs (nanoBTS, sysmoBTS, USRP B2xx, UmTRX, ...) are connected, and where
we run automatic continous tests with a set of modems against our latest "master"
of the Osmocom stack.

> Would it be possible for someone from
> Sysmocom (or someone from the community who have been set up with
> remote access to that board) to test and see if the FCDEV3B can
> successfully connect to Osmocom network using the official FreeCalypso
> firmware on the board, driven via AT commands?

This should all be possible.  I doubt anyone has removed/erased the firmware
on it.

In fact, I think that connecting the FCDEV to the osmo-gsm-tester
setup might not be the best idea. It might be better to have a dedicated
test setup with a single BTS and the FCDEV, to which we can then provide
remote access. But let's have that discussion at https://osmocom.org/issues/2704

> If Sysmocom folks are philosophically against doing any tests with
> FreeCalypso firmware, 

I'm not sure where you would get such an idea from.  We're happy to test
whatever makes sense technically, and if there are any [suspected] interoperability
problems with the Osmocom network-side stack, then we want to resolve those,
no matter what the MS side implementation.

-- 
- Harald Welte <laforge at gnumonks.org>           http://laforge.gnumonks.org/
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