stm32 external SRAM

[Jython]

STM32:
    112KB at 2000 0000
    16KB at 2001 C000

external sram : 1MB at 0x68000000

 does MEMORY layout support RAM2?

On Fri, Jun 14, 2019 at 10:13 PM Christian Mauderer <
christian.mauderer at embedded-brains.de> wrote:

> If you have already added the chip and it is initialized during startup,
> you most likely have to add a section for it in your linker command
> file. Depending on where your internal RAM is located and where the
> external one is: If they are continuous that can be enough.
>
> Best regards
>
> Christian
>
> On 14/06/2019 04:42, Jython wrote:
> > we have added 1M ram by FSMC,  and want to manage it by system malloc
> > controler
> >
> > On Fri, Jun 14, 2019 at 10:26 AM Mr. Andrei Chichak <groups at chichak.ca
> > <mailto:groups at chichak.ca>> wrote:
> >
> >     A 407 doesn’t normally have external RAM.
> >
> >     ARMs have flash at 0 and the 407 has RAM at 0x2000 0000 as you
> >     discussed earlier.
> >
> >     If you want to work with external flash or RAM, you have to set up
> >     the FSMC or FMC to support it, but that isn’t a part of the dev
> >     board that Sebastian used for the BSP port.
> >
> >     The external memory is going to be very specific to your board.
> >     Which board are you working with?
> >
> >     A
> >
> >     > On 2019-June-13, at 06:23, Christian Mauderer
> >     <christian.mauderer at embedded-brains.de
> >     <mailto:christian.mauderer at embedded-brains.de>> wrote:
> >     >
> >     > On 05/06/2019 02:55, Jython wrote:
> >     >> Hello!
> >     >>
> >     >>     2. In the normal (non-debugging) case, the linker script still
> >     >>        places the
> >     >>
> >     >>    .text section near zero, but places the start of the .data and
> >     .bss
> >     >>    sections at the start location of the MPC555's internal RAM.
> The
> >     >>    system startup code then configures the external RAM just
> >     after the
> >     >>    internal RAM in memory, forming one large block from the two
> RAM
> >     >>    devices.
> >     >>
> >     >> from https://devel.rtems.org/wiki/TBR/BSP/Ss555
> >     >>
> >     >> but i dont know how to configure the external RAM just after the
> >     >> internal RAM in memory?
> >     >> hope you could give me some guide!
> >     >>
> >     >>
> >     >
> >     > Hello Jython,
> >     >
> >     > the documentation you linked is for an MPC. But your subject line
> >     > mentions an STM32. What controller / BSP are you using?
> >     >
> >     > Best regards
> >     >
> >     > Christian Mauderer
> >     > --
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> --
> --------------------------------------------
> embedded brains GmbH
> Herr Christian Mauderer
> Dornierstr. 4
> D-82178 Puchheim
> Germany
> email: christian.mauderer at embedded-brains.de
> Phone: +49-89-18 94 741 - 18
> Fax:   +49-89-18 94 741 - 08
> PGP: Public key available on request.
>
> Diese Nachricht ist keine geschäftliche Mitteilung im Sinne des EHUG.
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