Fast SIM cards loosing bytes

Dean Chester dean.g.chester at gmail.com
Fri Jan 24 21:06:59 UTC 2014


Hi min,

How do you mean that they would be incompatible with early firmware based tracers? 

I'd be interested in using your firmware if you were to make it available, I'm also working on a more user friendly host software. 

Kind regards 

Dean Chester. 

Sent from my iPad

> On 24 Jan 2014, at 19:41, Min Xu <mxu at sanjole.com> wrote:
> 
> Hi Holger
> 
> To give you an update.  As far as I can tell, the changes I have submitted, with the addition of a change (on my local system) where the USB protocol has been modified to remove USB overrun, is stable so I can monitor iPhone 5S as well as Galaxy S4 continuously.  If anyone asks, I would be happy to send them the USB protocol changes.  However, it will be INCOMPATIBLE with earlier firmware based SIMTrace boards.
> 
> I am making changes to the host program (on Windows) to monitor multiple SIMTrace devices, and am interested to know if anyone else is working on something similar.  
> 
> Best Regards
> 
> 
>> Date: Wed, 22 Jan 2014 21:27:31 +0100
>> From: Holger Hans Peter Freyther <holger at freyther.de>
>> To: Dean Chester <dean.g.chester at gmail.com>
>> Cc: "simtrace at lists.osmocom.org" <simtrace at lists.osmocom.org>
>> Subject: Re: Fast SIM cards loosing bytes
>> Message-ID: <20140122202731.GL15138 at xiaoyu.lan>
>> Content-Type: text/plain; charset=us-ascii
>> 
>> On Mon, Jan 13, 2014 at 08:35:05AM +0000, Dean Chester wrote:
>> > Hi,
>> >
>> > I see earlier in the archives that reducing the buffer size in the firmware will resolve this. Hasn't this already been done though in new releases of the firmware? As I have pulled the latest version from the openpcd git repo and built it. If not what have people reduced the buffer size to? And has it had any fixes?
>> 
>> The closest are the patches that Min Xu sent. They require some
>> clean-ups and review (specially the code changing the interrupt
>> handling).
>> 
>> holger
>> 
>> 
>> 
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>> End of simtrace Digest, Vol 33, Issue 4
>> ***************************************
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