[Tinkerphones] New tinkerphone gadgets in Goldelico shop?

Belisko Marek marek.belisko at gmail.com
Wed Nov 15 09:40:26 CET 2017


Hi Nikolaus,

On Wed, Nov 15, 2017 at 9:01 AM, H. Nikolaus Schaller <hns at goldelico.com> wrote:
> Hi Marek,
>
>> Am 15.11.2017 um 08:46 schrieb Belisko Marek <marek.belisko at gmail.com>:
>>
>> Hi Nikolaus,
>>
>> On Tue, Nov 14, 2017 at 5:33 PM, H. Nikolaus Schaller <hns at goldelico.com> wrote:
>>> Hi Marek,
>>> this are nice findings!
>>>
>>> Did I understand all that correctly that one just needs some 3.3V compatible UART plus host software?
>>>
>>> The FST-01 hardware has three connector pads for
>>> * GND
>>> * SWCLK
>>> * SWDIO
>>>
>>> where it is expected to connect the ST-link. These pin names look a little more like I2C than UART.
>>> Or are they dual-function?
>> According other app note:
>> https://www.google.sk/url?sa=t&rct=j&q=&esrc=s&source=web&cd=1&cad=rja&uact=8&ved=0ahUKEwjyzaDIisDXAhVMfxoKHaALBx0QFggmMAA&url=http%3A%2F%2Fwww.st.com%2Fresource%2Fen%2Fapplication_note%2Fcd00167594.pdf&usg=AOvVaw0qX4Dmhs0QSw4vcuN33uhq
>> it looks like there are various pattern how to start bootloader stored
>> in internal ROM (burn in production).
>
> This seems to be very similar to the BOOT options of the OMAP processors.
> One of them is well know to GTA04 users: the AUX button modifies boot sequence from NAND-MMC-UART to MMC-NAND-UART.
>
>> So maybe we will just need some
>> jumper and connector to plug usb->uart converter and user can then
>> easily update SW in stm32.
>>>
>>> And do we need to pull up/down some other pin to enable this programming protocol?
I have at home some STM32 eval board with many uarts so I'll check
what is necessary to have bootloader running and get back with
results.
>>>
>>> Generally I'd like to avoid adding costly hardware which is rarely used.
>>> One thing is that it may well make the cost go up to 50€ per key...
>>> And the other is that it needs space making the key bigger.
>> So adding small connector (rx,tx,gnd) + maybe 1 jumper for force
>> bootloader to start shouldn't be so expensive ;)
>
> Yes, that would be easy. Maybe we can use the standard FTDI-6pin UART connector like it is used for BeagleBone, Letux Cortex 8, PocketBone etc.
>
> Do you know which pins we have to touch on the STM32F103TB (used by the FST-01)?
> The schematics shows BOOT0 and BOOT1 pins both tied to GND. And SWDIO and SWCLK are going to jumper.
>
> Or can we even have the boot loader of the STM32F103TB watch USB?
>
> Well, that would be some security risk since a rogue usb driver
> could reflash the crypto firmware without users noticing...
>
> But a solution could be that flashing requires some solder blob on the PCB.
>
> BR and thanks,
> Nikolaus
>
>>>
>>> BR,
>>> Nikolaus
>>>
>> BR,
>>
>> marem
>>>> Am 14.11.2017 um 13:16 schrieb Belisko Marek <marek.belisko at gmail.com>:
>>>>
>>>> Hi,
>>>>
>>>> On Tue, Nov 14, 2017 at 8:55 AM, Belisko Marek <marek.belisko at gmail.com> wrote:
>>>>> Hi Nikolaus,
>>>>>
>>>>> On Mon, Nov 13, 2017 at 12:12 PM, H. Nikolaus Schaller
>>>>> <hns at goldelico.com> wrote:
>>>>>> Hi Marek,
>>>>>>
>>>>>>> Am 13.11.2017 um 11:45 schrieb Belisko Marek <marek.belisko at gmail.com>:
>>>>>>>
>>>>>>> On Mon, Nov 13, 2017 at 11:42 AM, Belisko Marek <marek.belisko at gmail.com> wrote:
>>>>>>>> Hi,
>>>>>>>>
>>>>>>>> On Mon, Nov 13, 2017 at 8:33 AM, H. Nikolaus Schaller <hns at goldelico.com> wrote:
>>>>>>>>> Hi all,
>>>>>>>>>
>>>>>>>>>> Am 04.11.2017 um 22:17 schrieb Niels <nift at maclisp.org>:
>>>>>>>>>>
>>>>>>>>>> "H. Nikolaus Schaller" <hns at goldelico.com> writes:
>>>>>>>>>>
>>>>>>>>>>> Hi Paul,
>>>>>>>>>>>
>>>>>>>>>>>> Am 03.11.2017 um 13:06 schrieb Paul Boddie <paul at 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.munker at 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
>>>>> We can use stm32 serial bootloader which should be present in any
>>>>> stm32. Here is application note:
>>>>> http://www.st.com/content/ccc/resource/technical/document/application_note/51/5f/03/1e/bd/9b/45/be/CD00264342.pdf/files/CD00264342.pdf/jcr:content/translations/en.CD00264342.pdf
>>>>> and also here is small program which can be used to burn image to
>>>>> stm32 via serial bootloader: https://github.com/jsnyder/stm32ld
>>>> And we can also use FOSS solution (from same guy who did FST-01) :
>>>> https://www.hackster.io/gniibe/bbg-swd-93bcea
>>>>>
>>>>> So we don't need ST-link programmed/debugger ;).
>>>>>>
>>>>>> Hm. Well, the ST-Link device is another Microcontroller with built-in firmware.
>>>>>> So how do we flash that :)
BR,

marek



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