What is the preferable way to add new BSP (for stm32 family)

[Y. HB]

Thanks for your great information !

On Sun, Sep 11, 2022 at 9:57 PM Karel Gardas <karel.gardas at centrum.cz>
wrote:

>
> Not sure about recent progress but IIRC Duc Doan (cced) is also using
> STM provided HAL for his work on GPIO driver for F4 BSP. Please see [1]
> and [2].
>
> If however you consider HAL to be too heavy weight solution, perhaps you
> may have a look into STM provided LL (low-layers drivers) API? This
> should be more light weight low level API but with less portability.
> Please see UM1786[3].
>
> Important question here is also a question of licensing. Last few
> releases of at least H7 HAL were done under Apache 2.0 license. F4 seems
> to be the same case and I would bet F3 would be same too. I mention that
> as RTEMS developers still need to kind of discuss Apache 2.0 licensed
> code in the project. Opinion were still not settled before summer
> holidays break but I do not know if there is any movement on this front.
>
> Thanks,
> Karel
>
> [1]: https://devel.rtems.org/wiki/GSoC/2022
> [2]: https://medium.com/@dtbpkmte
> [3]:
>
> https://www.st.com/content/ccc/resource/technical/document/user_manual/a6/79/73/ae/6e/1c/44/14/DM00122016.pdf/files/DM00122016.pdf/jcr:content/translations/en.DM00122016.pdf
>
>
> On 9/10/22 18:20, Y. HB wrote:
> > I have seen in rtems 6.0, there are two stm32 families: stm32f4 and
> stm32h7
> >
> > The former one uses custom code to set up BSP, while the latter one uses
> > the ST provided HAL lib to set up BSP.
> >
> > Now I need to add a BSP for stm32f3, which is very different (reg
> > layout) from stm32f4.
> >
> > To add stm32f3 BSP as the stm32f4 approach is tedious and error prone,
> > but slim codebase,
> > the stm32h7 way has full capabilities provided via ST HAL, but may be
> > too bloat if many stm32 families being added into source tree.
> >
> > So what is your suggestions? Which is a preferable way ?
> >
> > Thanks
> >
> >
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>
>
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