Hi Nikolaus,

On Mon, Nov 13, 2017 at 12:12 PM, H. Nikolaus Schaller
<h...@goldelico.com> wrote:
> Hi Marek,
>
>> Am 13.11.2017 um 11:45 schrieb Belisko Marek <marek.beli...@gmail.com>:
>>
>> On Mon, Nov 13, 2017 at 11:42 AM, Belisko Marek <marek.beli...@gmail.com> 
>> wrote:
>>> Hi,
>>>
>>> On Mon, Nov 13, 2017 at 8:33 AM, H. Nikolaus Schaller <h...@goldelico.com> 
>>> wrote:
>>>> Hi all,
>>>>
>>>>> Am 04.11.2017 um 22:17 schrieb Niels <n...@maclisp.org>:
>>>>>
>>>>> "H. Nikolaus Schaller" <h...@goldelico.com> writes:
>>>>>
>>>>>> Hi Paul,
>>>>>>
>>>>>>> Am 03.11.2017 um 13:06 schrieb Paul Boddie <p...@boddie.org.uk>:
>>>>>>>
>>>>>>> On Friday 3. November 2017 10.54.44 H. Nikolaus Schaller wrote:
>>>>>>>>> Am 03.11.2017 um 10:32 schrieb Thomas Munker <t.mun...@gmx.net>:
>>>>>>>>>
>>>>>>>>> i would like to see some small cryptographic hardware, like eg. 
>>>>>>>>> yubikey.
>>>>>>>>> At best easy interfaceable to gta02/gta04 or with necessary interface
>>>>>>>>> hardware
>>>>>>>>
>>>>>>>> I have checked what they have:
>>>>>>>>
>>>>>>>> https://www.yubico.com/product/yubikey-4-series/
>>>>>>>> <https://www.yubico.com/product/yubikey-4-series/>
>>>>>>>>
>>>>>>>> It seems they offer USB-A and USB-C. So neither Mini nor Micro-USB. So 
>>>>>>>> it
>>>>>>>> needs a proper adapter.
>>>>>>>
>>>>>>> There is an article on LWN.net about these devices and others:
>>>>>>>
>>>>>>> https://lwn.net/Articles/736231/
>>>>>>>
>>>>>>> It covers the Yubikey NEO and Yubikey 4 plus the Nitrokey Pro and 
>>>>>>> FST-01.
>>>>>>
>>>>>> Interesting reading!
>>>>>>
>>>>>> To me it looks as if it would best fit our community to simply build
>>>>>> enough FST-01 units, so that they are not out of stock...
>>>>>>
>>>>>> Everything is said to be free and open, even if the device isn't the 
>>>>>> fastest one:
>>>>>>
>>>>>> https://github.com/vinaebizs/fst-01
>>>>>> https://raw.githubusercontent.com/SeeedDocument/FST-01/master/img/Fst-01-schematic.png
>>>>>>
>>>>>> So it looks not very difficult to have them produced and stocked by us at
>>>>>> a reasonable price.
>>>>
>>>>>
>>>>> I agree.
>>>>>
>>>>> I have been wanting a FST-01 for a while, but not found any place to
>>>>> buy one.
>>>>
>>>> I have studied the schematics and it will take less than 1 day to prepare 
>>>> for
>>>> producing some clone...
>>>>
>>>> Cost is also reasonable, e.g. something below 30€ seems feasible for tiny
>>>> quantities (if produced in batches of 10). So it is possible to provide
>>>> permanent supply.
>>>>
>>>> What I understood is that it needs some flashing tool to be connected to
>>>> a jumper. Maybe someone can elaborate this.
>>>>
>>>> One thing is to be discussed about the USB interface:
>>>>
>>>> Should we keep the USB-A plug or try to replace it by an Mini-USB-A so that
>>>> it can be directly plugged into a GTA0x?
>>>>
>>>> Or even 3 variants with Standard-USB, MiniUSB and µUSB? Or does someone 
>>>> have
>>>> an idea if multiple sockets are feasible?
>>>>
>>>> USB-C makes no sense IMHO, because then a much faster processor with USB3 
>>>> speed
>>>> should be used... This would be a completely different project.
>>>>
>>>> So what can be the next steps?
>>>> * I await your comments and comments about being interested
>>>> * maybe someone should take care about the programming procedures
>>> I have experience with programming stm32 (there exists stm32uart
>>> utility which can burn SW) but in this case I'm unsure.
>>> Does stm32 boot from external spi flash or external spi flash is used
>>> for something else?
>> In meantime I found that it's possible via ST-link only:
>> http://wiki.seeed.cc/FST-01/
>> also here: 
>> http://www.gniibe.org/memo/development/fst-01/dongle/fst-01-swd-connection.html
>> so if we do new design maybe would be good to add for user possibility
>> to update FW.
>
> Nice finding!
>
> Well, this would mean that we have to clone the ST-link device (where I have 
> not
> yet an idea what is inside) and add another USB socket.
>
> But there seem to be clones:
>
> https://www.gearbest.com/development-boards/pp_62989.html?currency=EUR&vip=2275155&gclid=CjwKCAiAoqXQBRA8EiwAIIOWstP9pf8EWlN1SaHyGVUZzDDjkmMVt329W6Misb_BTv_HxOqSr28UMxoCQ_8QAvD_BwE
>
> Hm. Well, the ST-Link device is another Microcontroller with built-in 
> firmware.
> So how do we flash that :)
OK chicken-egg problem ;). I'm not sure which interface is using
stlink but for sure I know that stm32 can be programmed vie serial
interface using : https://github.com/jsnyder/stm32ld
so maybe it will be necessary to have connector for update process (or
even bettre to usb usb serial converter on board and other usb port to
flash software). BTW we have only schematics do we have also SW which
will run in stm32?
>
> BR,
> Nikolaus
>
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BR,

marek

-- 
as simple and primitive as possible
-------------------------------------------------
Marek Belisko - OPEN-NANDRA
Freelance Developer

Ruska Nova Ves 219 | Presov, 08005 Slovak Republic
Tel: +421 915 052 184
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