On Tue, Jul 11, 2023 at 4:04 PM Karel Gardas <karel@functional.vision> wrote:
> On 7/11/23 15:50, Kinsey Moore wrote: > > This adds support for the STM32H750B-DK discovery kit. This kit includes > > a built-in STLINKv3 debugger which provides a USB serial bridge for > > USART3. USART1 is routed to the Arduino header and USART2 is routed to > > the STMOD connector. This BSP reuses what would otherwise be duplicated > > files from the stm32h747i-disco BSP. Note that system_stm32h7xx.c has > > been imported from the STM repository with two minor changes wrapped > > with #if __rtems__. This hardware has been tested with hello and ticker. > > Nice! So with a just little bit of tweak I may get my stm32h745-disco > up&running as your 750 is on the same disco kit. Sweet! :-) > > > diff --git a/spec/build/bsps/arm/stm32h7/optmemsdram1sz.yml > b/spec/build/bsps/arm/stm32h7/optmemsdram1sz.yml > > index bd1053db38..56ec66a64f 100644 > > --- a/spec/build/bsps/arm/stm32h7/optmemsdram1sz.yml > > +++ b/spec/build/bsps/arm/stm32h7/optmemsdram1sz.yml > > @@ -14,6 +14,9 @@ default: > > - arm/stm32h757i-eval-m4 > > - arm/stm32h7b3i-dk > > value: 0x00000000 > > +- enabled-by: > > + - arm/stm32h750b-dk > > + value: 0x01000000 > > - enabled-by: true > > value: 0x02000000 > > description: | > > Have you actually tested writing to the SDRAM 1 memory region? Asking > since IIRC several of STMicro data sheets were wrong about specifying > RAM to be SDRAM 1 while in fact it was in SDRAM 2 region by default. And > your system*.c does not contain (if I've not overlooked it) any > remapping from SDRAM 2 to SDRAM 1 -- so just asking for to be sure, you > actually tested putting some data into it. > > E.g. "An 8M x 32-bit SDRAM is connected to the SDRAM bank1 of the FMC > interface of the STM32H7x7XI microcontroller." -- this comes from um2525 > for stm32h757i-eval and no, by default SDRAM is mapped to bank2. > I'm not sure that anything I've done for testing would have verified that the SDRAM is operating properly. I'll have to pull it back out and give it a shot. Kinsey
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