STM32F4 discovery loading issue.

Jiri Freyvald jiri.freyvald at
Wed Aug 28 22:17:45 UTC 2013

yes, console output from your hello.bin is redirected to USART3, baud 
rate 115200, 8N1, which are default settings for rtems/configure.
You can override it, of course

And yes, you can use level shifter from TTL to RS232
(for example


On 28/08/13 22:46, Karel Gardas wrote:
> Hi Jiri,
> thanks for confirmation. The difference between our setups looks to be 
> in:
> - you are writing raw binary and you decide to do on 0x8000000 
> directly while I've been trying with RTEMS generated hello.exe, i.e. 
> ELF file.
> Could you be so kind and let me know where exactly hello.bin prints 
> its messages? To USART 3 as I assume? If so then am I right that for 
> debugging/printing you use custom level shifter (to rs-232) and 
> connects directly to appropriate pins on board?
> Thanks!
> Karel
> On 08/28/13 11:40 PM, Jiri Freyvald wrote:
>> Hi Karel,
>> it actually works very well (I mean for STM32F4 discovery board) and out
>> of the box.
>> I myself use stlink (on linux) for uploading RTEMS binaries with the
>> same parameters for stlink as for any STM32F4 binary (without RTEMS)
>> for example:
>> flash write o-optimize/hello.bin 0x8000000
>> regards,
>> Jiri
>> On 28/08/13 18:53, Karel Gardas wrote:
>>> Hello,
>>> I'm trying to use STM32F4 discovery board to run some RTEMS programs,
>>> actually starting with hello.exe but I've found that neither using
>>> OpenOCD 0.7.0 on Windows nor using stlink (HEAD) I've been able to
>>> load the program on the board. Stlink was a little bit clearer here
>>> and I've found that if I change flash address from 0x0 to 0x08000000
>>> my program loads successfully.
>>> My question then is: if STM32F4 BSP is tested, then how to switch my
>>> STM32F4 discovery board to be able to use RTEMS's tests/samples on it
>>> as it was done on reference/developer platform?
>>> Thanks!
>>> Karel
>>> _______________________________________________
>>> rtems-users mailing list
>>> rtems-users at
>> _______________________________________________
>> rtems-users mailing list
>> rtems-users at

More information about the users mailing list