Re: usb_8dev: firmware and windows library

[Bernd Krumboeck <krumboeck@universalnet.at>]

Hi!


Thank you for the fast response.

Protection against disassembling?
Is it possible to get the key?


regards,
Bernd


Am 2014-01-26 10:22, schrieb Gediminas Simanskis:
> Hello,
>
> binary image must be encrypted in RC4 format with 40 bit key before making DFU file.
>
> Gediminas
>
>> Hi!
>>
>>
>> I tried to build my own firmware for the microcontroller with GNU Toolchain.
>> I was able to build, but it doesn't work.
>> Sadly I'm not able to debug.
>>
>>
>> Maybe someone has an idea?
>>
>>
>> CAUTION: You can brick your hardware, if you accidentally overwrite the bootloader!
>>
>> If you work careful you can easily flash back to original firmware.
>>
>>
>>
>> Setup project and build project:
>> 1. Download GNU Toolchain for ARM (https://launchpad.net/gcc-arm-embedded)
>> 2. Unpack into /opt
>> 3. Set Path: "export PATH=/opt/gcc-arm-none-eabi-4_8-2013q4/bin/:$PATH"
>> 4. Unpack gccstartup.tar.gz
>> 5. execute "make"
>>
>>
>> Convert bin file to dfu file:
>> 1. Download dfu-20101118.tgz from http://www.seeedstudio.com/forum/viewtopic.php?p=4504#p4504
>> 2. Unpack wherever you want
>> 3. execute "python dfu.py -b 0x20006000:main.bin main.dfu"
>>
>>
>> Flash to device:
>> https://github.com/krumboeck/usb2can_firmware#flash-the-device-linux-experimental
>>
>>
>> What it should do (but does not work):
>> * Simple startup for C language
>> * Turn on the red led
>>
>>
>> Attached files:
>> gccstartup.tar.gz   --- Project source
>> main.bin            --- Binary output for flashing
>> main.map            --- Linker Mapping file
>>
>>
>> Some last thoughts:
>> * The memory map from Gediminas contains a .checksum section. Maybe the bootloader do some checks?
>> * Maybe the binary file is ok, but the dfu file is not compatible?
>>
>>
>>
>> regards,
>> Bernd
>>
>>
>>
>> Am 2014-01-25 17:55, schrieb Oliver Hartkopp:
>>> Hello Brennan,
>>>
>>> a packet from Germany to the US is about 16 EUR with DHL and 60EUR with UPS??
>>> Maybe I missed anything with the UPS Website while trying to get some shipping
>>> costs %-]
>>>
>>> Btw. with all the customs stuff it looks pretty pointless to sent this adapter
>>> to you from Germany and back again :-(
>>>
>>> I know some guys in the US that bought some of these adapters last year.
>>> I'll try to contact them on Monday if it's possible to lend you one of the
>>> adapters and ship it inside the US.
>>>
>>> Regards,
>>> Oliver
>>>
>>> On 25.01.2014 16:55, Brennan Ashton wrote:
>>>> Bernd,
>>>> Assuming it's not coming from the Arctic Circle or something I have no
>>>> problem covering the cost of shipping. Just shoot me a private email
>>>> with how much shipping is and how to get the funds to you.
>>>>
>>>> --Brennan
>>>>
>>>> On 1/25/14, Bernd Krumboeck <krumboeck@universalnet.at> wrote:
>>>>> I could lend, but the delivery costs would eat my pocket. ;-)
>>>>>
>>>>> Maybe I could find some time in the next days.
>>>>> Are you willing to assist by mail?
>>>>>
>>>>>
>>>>> regards,
>>>>> Bernd
>>>>>
>>>>>
>>>>>
>>>>> Am 2014-01-25 09:29, schrieb Brennan Ashton:
>>>>>> If there is interest and someone can lend me one of these for a bit of
>>>>>> time I'm sure I could get this ported over to the GCC arm tool chain.
>>>>>> I have done a few IAR to GCC ports and besides a few tricks they
>>>>>> usually are not too bad.
>>>>>>
>>>>>> --Brennan Ashton
>>>>>>
>>>>>> On 1/24/14, Bernd Krumboeck <krumboeck@universalnet.at> wrote:
>>>>>>> Hi!
>>>>>>>
>>>>>>>
>>>>>>> Source code from firmware v1.5:
>>>>>>> https://github.com/krumboeck/usb2can_firmware
>>>>>>>
>>>>>>>
>>>>>>> After some experiments I was able to flash the firmware with dfu-util
>>>>>>> under
>>>>>>> linux:
>>>>>>> https://github.com/krumboeck/usb2can_firmware#flash-the-device-linux-experimental
>>>>>>>
>>>>>>>
>>>>>>> Sadly I don't know the way how to build the firmware with a free tools
>>>>>>> chain.
>>>>>>>
>>>>>>>
>>>>>>> regards,
>>>>>>> Bernd
>>>>>>>
>>>>>>>
>>>>>>> Am 2014-01-22 15:46, schrieb Marc Kleine-Budde:
>>>>>>>> On 01/22/2014 01:58 PM, Bernd Krumboeck wrote:
>>>>>>>>> May I kindly ask you to send me a diff/patch about the changes, so I
>>>>>>>>> can
>>>>>>>>> update the firmware sources on github.
>>>>>>>>
>>>>>>>> A complete new set of sources will do, too. Git will create the diff
>>>>>>>> for
>>>>>>>> you. :)
>>>>>>>>
>>>>>>>> Marc
>>>>>>>>
>>>>>
>
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