01:23 <dirbaio[m]> dj2v65fnvh: fixed the USB issue on the f429zi-disc1 board from monday! https://github.com/embassy-rs/embassy/pull/2805

11:03 <JamesMunns[m]> Btw, anyone here going to be at Hackaday Berlin this weekend? I probably won't be at the con, but might go to the pre-party tonight

13:11 <cesnel[m]> Hello there,... (full message at <https://catircservices.org/_matrix/media/v3/download/catircservices.org/WqNzvKpMIOfbSiRaucbWMzUQ>)

13:12 <cesnel[m]> * Hello there,... (full message at <https://catircservices.org/_matrix/media/v3/download/catircservices.org/jcwjUacdEZzyBTFQOAbweOfr>)

14:04 <JamesMunns[m]> <cesnel[m]> "Hello there,..." <- > <@cesnel:matrix.org> Hello there,... (full message at <https://catircservices.org/_matrix/media/v3/download/catircservices.org/KUJcmgYJAMqdCBnXdpCzzCHs>)

14:05 <cesnel[m]> I just checked the asm code, so I think the logical way would be to use #[pre_init] to initialise it.

14:06 <cesnel[m]> JamesMunns[m]: Thanks!

14:06 <RobertJrdens[m]> depends. either custom init procedure, runtime init with MaybeUninit/cortex_m::singleton() (soon), or piggy back on the existing mechanisms by placing your new sections such that they fall into the .data load mechanism or .bss zeroing.

14:06 <JamesMunns[m]> cesnel[m]: Yeah, depends when you need it! You could initialize it in Rust if you don't need it until runtime, it gets a little harder if it needs to be a `static` or something, like Robert said.

14:08 <JamesMunns[m]> https://docs.rs/grounded/latest/grounded/uninit/struct.GroundedCell.html is a type I'm working on that could be placed in those sections with `#[link_section = ".your.custom.section"]`, I don't have great docs for it yet

14:09 <JamesMunns[m]> but since it's considered uninit at boot, you can do the initialization in main, then (unsafely) make a `&'static` or `&'mut static` out of it.

14:10 <JamesMunns[m]> * https://docs.rs/grounded/latest/grounded/uninit/struct.GroundedCell.html is a type I'm working on that could be placed in those sections with `#[link_section = ".your.custom.section"]`, I don't have great docs for it yet... (full message at <https://catircservices.org/_matrix/media/v3/download/catircservices.org/YydWyHDDDEetdEUunqmkMFrE>)

14:11 <cesnel[m]> Oki, thanks for the help!

20:33 <ingo[m]> Hey, i'm working on some code for a stm32f103 which requires a division and modulo operation. I'm wondering if a simple division and subsequent modulo operation translates to arms `udiv` operation or if it results in some expensive code. Is there anything special i have to watch out for?

20:41 <dirbaio[m]> https://godbolt.org/z/Eb8PG13zx

20:41 <dirbaio[m]> seems it generates one udiv and one multiply-subtract

20:45 <ingo[m]> thanks a lot! that looks like a useful site.

21:35 <AdinAck[m]> does anyone know of any STM32 HALs that use embedded-hal v1 traits? (specifically SPI) i'm trying to convert the G4 HAL to v1

21:36 <dirbaio[m]> embassy-stm32

21:36 <AdinAck[m]> hah!

21:36 <AdinAck[m]> of course, thanks :)

21:36 <dirbaio[m]> and it supports stm32g4, btw

21:37 <AdinAck[m]> yes i know, i'm trying to use not embassy for a bit to further my learning

21:39 <AdinAck[m]> uh oh, unless i am not understanding it looks to me like embassy-stm32's SPI implementation is with embedded-hal v0.2

21:39 <dirbaio[m]> it supports both at the same time

21:39 <dirbaio[m]> there's two sets of impls

21:40 <dirbaio[m]> for max comapt

21:40 <dirbaio[m]> * for max compat

21:41 <AdinAck[m]> ah whoops yes, had to scroll about a thousand lines more :)

21:41 <AdinAck[m]> sweet!

21:45 <AdinAck[m]> wait... embassy-stm32 has SDMMC built in?

21:45 <AdinAck[m]> embassy is too cool