simtrace June 2011

simtrace@lists.osmocom.org

5 participants
7 discussions

SIMtrace v1.0 status report
by Harald Welte 30 Jun '11

30 Jun '11

Hi all, the SIMtrace v1.0 is a big success. No re-work required, it worked out of the box after soldering. We are in discussion with the manufacturer for some small footprint/component changes to reduce the number of special components that he doesn't already have in tape reels in his SMT machines. After that discussion is finished (hopefully soon), we will build 100 units (in Germany). Left as a TODO item is still the SIM card adapters. We're working to make sure they will be ready at the same time the SIMtrace boards will be ready. Thanks again to Kevin for his work on the schematics + layout side. Regards, Harald -- - Harald Welte <laforge(a)gnumonks.org> http://laforge.gnumonks.org/ ============================================================================ "Privacy in residential applications is a desirable marketing option." (ETSI EN 300 175-7 Ch. A6)

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Simtrace prototype progress
by Harald Welte 21 Jun '11

21 Jun '11

Hi all, Kevin and I have been making great progress today, spending about 12 hours with debugging, re-working and re-designign simtrace. The previous malfanction seemed to be caused by attachign the Vcc from the phone to the AD7 input of the SAM7. Apparently the Vcc of the phone was >= 50mV higher than the Vcc of the SAM7, and this caused the phone (/smartcard reader) to give up as it could not raise the power line to the level it wanted to raise it, even before switching on clock to the card. Aside from the one prototype, we have also received 5 units made by some friends of K2 in china, who unfortunately used a previous gerber that had even more bugs. Nonetheless, three out of those 5 units have been re-worked, and are now functional, too. We will do a very quick 2nd prototype spin with the following changes * fix all the bugs as per the trac tickets * use the new bus switch with lower resistance * use a LDO with two outputs (and two enable inputs) so we can use a GPIO to supply the SIM card with voltage ourselves * add a power distribution switch with < 1Ohm Rds-on so we can alternatively switch through the Vcc from the phone to the SIM * add a resistive divider between VCC_phone and the ADC input * use angled jumpers so the overall unit remains flat The gerber will be sent off tomorrow for a '3 working days' quick PCB, the corresponding digikey order, too. Kevin has offered to solder the next prototype. If everything works well, we will immediately go into production of something like 100 units to make sure they're ready before the CCC Camp (where some people might be interested in obtaining one). Regards, Harald -- - Harald Welte <laforge(a)gnumonks.org> http://laforge.gnumonks.org/ ============================================================================ "Privacy in residential applications is a desirable marketing option." (ETSI EN 300 175-7 Ch. A6)

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SIMtrace hardware update
by Harald Welte 20 Jun '11

20 Jun '11

Hi all, unfortunately the number of hardware bugs is quite numerous. for those interested in the details, feel free to read the ticket list in trac. None of the bugs that I've found so far is too serious for a manual re-work of the prototype. My device is now already enumerating its SAM-BA loader on the USB. JTAG is working, too: I can set the red/green LED via JTAG. I'll do some further testing (SPI, SIM card interface) as soon as I find time... -- - Harald Welte <laforge(a)gnumonks.org> http://laforge.gnumonks.org/ ============================================================================ "Privacy in residential applications is a desirable marketing option." (ETSI EN 300 175-7 Ch. A6)

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SIMtrace PCBs / prototype progress
by Harald Welte 15 Jun '11

15 Jun '11

Hi all! Today the PCBs have arrived and I spent some tiem building the first prototype. Soldering after a long time was quite fun but worked great. However, I got stuck for way too long due to two pin-out problems: * the voltage regulator pinout is completely mixed up * the reset switch pinout is wrong and causes the device to be in nRESET all the time I've now applied some re-work and the CPU seems running. However, due to some unknown (probably USB pull-up related) problem, I cannot see it enumerate on USB yet. Will keep you posted about my further progress. I've created tickets for the bugs in our trac (http://bb.osmocom.org/trac/query) Regards, Harald -- - Harald Welte <laforge(a)gnumonks.org> http://laforge.gnumonks.org/ ============================================================================ "Privacy in residential applications is a desirable marketing option." (ETSI EN 300 175-7 Ch. A6)

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prototype PCBs have been drilled
by Harald Welte 08 Jun '11

08 Jun '11

See the attached image... -- - Harald Welte <hwelte(a)sysmocom.de> http://www.sysmocom.de/ ======================================================================= * sysmocom - systems for mobile communications GmbH * Schivelbeiner Str. 5 * 10439 Berlin, Germany * Sitz / Registered office: Berlin, HRB 134158 B * Geschaeftsfuehrer / Managing Directors: Holger Freyther, Harald Welte

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SIMTRACE components have arrived
by Harald Welte 05 Jun '11

05 Jun '11

Hi all, JFYI: The components for the SIMTRACE prototypes have arrived. The PCB will be shipping on June 9, so I guess it will arrive after the whitsunday holidays and we should be able to build the first unit[s] on June 14 or 15. Kevin: Do you have some time around those dates? Regards, Harald -- - Harald Welte <laforge(a)gnumonks.org> http://laforge.gnumonks.org/ ============================================================================ "Privacy in residential applications is a desirable marketing option." (ETSI EN 300 175-7 Ch. A6)

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FPC SIM adapters
by Harald Welte 03 Jun '11

03 Jun '11

Hi! It really seems like the FPCB (Flexible PCB) SIM card adapters have been removed from the rebelsimcard.com store. A couple of months ago, you could buy them separately from their "Hex Scanner". I have sent them an inquiry indicating my interest in buying bulk quantities (100 pieces). Let's see if that works. IF not, we may have to develop a 'plan B' in this area :( Regards, Harald -- - Harald Welte <laforge(a)gnumonks.org> http://laforge.gnumonks.org/ ============================================================================ "Privacy in residential applications is a desirable marketing option." (ETSI EN 300 175-7 Ch. A6)

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simtrace June 2011