[sdiy] STM32 processor

[Mikko Helin]

Texane supports ST-LINK V2 (USB command mode) but may be lacking some
bits for SMT32F4DISCOVERY kit (the GDB server at least). The flashing
might work, at least the new PID is there:

https://github.com/texane/stlink/blob/master/src/stlink-common.h

- Mikko

On Mon, Oct 17, 2011 at 12:03 AM, Mikko Helin <maohelin at gmail.com> wrote:
> Ok,
> I just studied the SCSI based implementation so it seems they have
> changed it. Too bad.
>
> Br,
> Mikko
>
> On Sun, Oct 16, 2011 at 11:55 PM, Eric Brombaugh <ebrombaugh1 at cox.net> wrote:
>> On 10/16/2011 01:32 PM, Mikko Helin wrote:
>>>
>>> Hi,
>>>
>>> Don't know which are the existing stlink-download tool you use but the
>>> one I spotted used this USB VID and PID from some random
>>> stlink-access-test.c file found from internet:
>>>
>>> // st-link vendor cmd's
>>> #define USB_ST_VID                      0x0483
>>> #define USB_STLINK_PID                  0x3744
>>>
>>>
>>> However, after installing the Atollic TRUEStudio in Windoze (XP) and
>>> checking the connected USB device "STMicroelectronic STLink dongle"
>>> properties I found the next Device Instance ID with VID and PID for
>>> the SMT32F4DISCOVERY board:
>>>
>>> USB\VID_0483&PID_3748\5&340A0F05&0&1
>>>
>>> So if you have the C code available for recompilation in Ubuntu try
>>> changing the PID to 0x3748. Can't guarantee it will work, though I
>>> suspect the protocol has been changed (guess ST-LINK has some versions
>>> but guess it's backwards compatible anyway).
>>>
>>> Does the existing Linux toolchain  support the use of Eclipse? I would
>>> be quite lost without it (guess other Java coders as well).
>>
>> The protocol appears to have changed significantly. The old version
>> identifies itself as a USB Storage class device and accepts commands via a
>> pseudo SCSI interface. The new protocol no longer appears as a storage
>> device, so the Linux kernel doesn't know what to do with it and the
>> corresponding device isn't created in /dev.
>>
>> There appear to be several Linux stlink apps out there however. One is here:
>>
>> http://code.google.com/p/arm-utilities/wiki/STLinkDownload
>>
>> which is the one I have been using and appears to only support the V1
>> protocol. Gordon Pearce mentioned another one:
>>
>> https://github.com/texane/stlink
>>
>> which may support both - I'm checking it out now.
>>
>> It's possible to set up Eclipse + ARM GCC under Linux - many folks do this.
>> Not being a Java coder it's not the development environment that I prefer
>> though, so I haven't pursued it.
>>
>> Eric
>>
>