On Fri, Nov 27, 2020, 2:29 PM Christian Mauderer <o...@c-mauderer.de> wrote:
> Hello John, > > On 27/11/2020 18:43, John Nathen wrote: > > Hi, > > > > I'm new to RTEMS and started playing with RTEMS on the STMH32H743ZI > > Nucleo board using the stm32h7 BSP a few weeks ago; I've got a few basic > > programs (LED Blink, console output...) to work on this board with minor > > changes in the configuration. > > > > The network driver for this BSP is implemented for libbsd, but I want to > > use the RTEMS legacy networking due to memory constraints. > How much too large is the footprint? Christian has previously suggested that there MIGHT be a way to reduce the footprint if we had requirements for a minimum feature set. Did you look at disabling features? > > > I've started to develop a networking driver that supports the RTEMS > > legacy networking but haven't made much progress as I'm new to RTEMS. > > > > I was wondering if anyone has already done a driver implementation or > > has any suggestions or inputs on how to proceed. > > Note that the STM32H7 BSP is one of the newest BSPs. I doubt that anyone > tried to use it with the legacy stack yet. > > Please also note that there have already been some discussions whether > the legacy stack should be removed. See > > https://lists.rtems.org/pipermail/devel/2020-October/062611.html > > for one of the latest. I don't think that it will be removed soon as > long as it don't make some trouble. But I would strongly advice against > starting a serious project with it. > > If libbsd is really too heavy (did you try the minimal config by the > way?) you might should look into lwIP instead. > +1 The old stack source code will eventually be moved to a limbo repository and a build system for that will only get added if there is demand (volunteer or paid core developer). > > That said: If you still want to use the legacy stack, you might want to > try to just backport the libbsd driver. For that I would suggest to take > a look at some of the drivers that have been ported in the other > direction so you can find the differences. For example the if_atsam or > some of the ffec drivers: > > > https://git.rtems.org/rtems-libbsd/tree/rtemsbsd/sys/dev/atsam/if_atsam.c > https://git.rtems.org/rtems-libbsd/tree/rtemsbsd/sys/dev/ffec > > The structure is quite similar between both stacks. > > Best regards > > Christian > > > > > Any help would be appreciated. > > > > Best Regards, > > John > > > > _______________________________________________ > > users mailing list > > users@rtems.org > > http://lists.rtems.org/mailman/listinfo/users > > > _______________________________________________ > users mailing list > users@rtems.org > http://lists.rtems.org/mailman/listinfo/users >
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