00:21 <GuineaWheek[m]> are there any examples on how to do spi reads on stm32h7xx-hal

00:21 <GuineaWheek[m]> and doing spi for both send and receive appears to be structurally impossible

00:21 <GuineaWheek[m]> all the examples only do writes

00:26 <GuineaWheek[m]> well, not just spi reads, spi dma reads

00:26 <GuineaWheek[m]> * only do dma writes

00:27 <GuineaWheek[m]> * doing spi dma for both, * and receive simultaneously appears to, * structurally impossible because the transfers take ownership of the peripheral

00:27 <GuineaWheek[m]> * are there any examples on how to do spi reads with dma on stm32h7xx-hal

02:35 <salsasteve[m]> <GuineaWheek[m]> "well, not just spi reads, spi ..." <- https://github.com/esp-rs/esp-hal/blob/main/examples/src/bin/spi_slave_dma.rs

02:35 <salsasteve[m]> I found this example. Not sure if this helps. It’s on the esp32 but it should look similar on the stm32. But I don’t have experience with the stm.

08:07 <ckrenslehner[m]> <RobinMueller[m]> "What are your favorite ring..." <- https://crates.io/crates/bbqueue

08:07 <ckrenslehner[m]> I have not tried it yet though, but I definitely want to in the near future

08:09 <ckrenslehner[m]> ckrenslehner[m]: https://open.spotify.com/episode/5C6GHG5Yg5foe5IMR11LY8?si=WscD8sZGRuSXlBk1s2dCwQ

08:09 <ckrenslehner[m]> There is even a podcast episode about it :-)

08:20 <JamesMunns[m]> <ckrenslehner[m]> "https://open.spotify.com/episode..."; <- That episode is actually about https://github.com/jamesmunns/bbq2, same algorithm, slightly different API to allow for async and some other usage tweaks

08:24 <ckrenslehner[m]> JamesMunns[m]: Already waiting for the next episode 🤓

10:35 <RobinMueller[m]> <ckrenslehner[m]> "Already waiting for the next..." <- Thanks, that also looks interesting and might be usable for my use-case. My use-case wouldn´t be DMA, but a logger sink implementation, where I want to write all log messages to a ring buffer, and then have a dedicated task write out all buffer content to UART. I suppose I still need a lock because I have multiple producers in the logger, but at the very least I might

10:35 <RobinMueller[m]> only have to lock producer writes? Async support is also interesting because I somehow want to be able to notify the writer task. I would have just used a simple embassy queue for this.

11:15 <AlexandrosLiarok> is there a good way to get a report of data consumers per memory region instead of per-section ?

11:15 <AlexandrosLiarok> s/consumers/consumed/

11:58 <adamgreig[m]> <AlexandrosLiarok> " is there a good way to get a..." <- yea, pass `--print-memory-usage` to the linker and run cargo with `RUSTC_LOG=rustc_Codegen_ssa::back::link=info`... (full message at <https://catircservices.org/_irc/v1/media/download/AdP3LomXxpCsSHuBEA9e9ymT17RttIGxkD50D48ZHOWz4rVAgnHWr1Pbg4xoTtz-yOpi_JsQuTR-0wY5LF_JD5u_8AAAAAAAAGNhdGlyY3NlcnZpY2VzLm9yZy9lc2NoVVpiQkhyTHZnSEZpTlFmRHVMZHY>)

11:59 <adamgreig[m]> (e.g. put println!("cargo:rustc-link-arg=--print-memory-usage"); in build.rs or put "-C", "link-arg=--print-memory-usage" in rustflags in .cargo/config.toml)

11:59 <adamgreig[m]> s/rustc_Codegen_ssa/rustc_codegen_ssa/

12:01 <adamgreig[m]> oh cool! actually because https://github.com/rust-lang/rust/pull/119286 was merged recently, on latest rust you can just run "cargo build -v" to get the linker output displayed, even better

12:15 <adamgreig[m]> oh weird, perhaps not? it looks more like after running with RUSTC_LOG set the first time, subsequent calls to cargo build still show the linker output, but -v doesn't affect it

13:31 <AlexandrosLiarok> <adamgreig[m]> "yea, pass `--print-memory-usage`..." <- Thanks a ton!

14:07 <ckrenslehner[m]> Are you using https://github.com/knurling-rs/defmt/tree/main/firmware/defmt-test or https://github.com/probe-rs/embedded-test/tree/master for testing? Or none of them? I am trying to setup one of these... (full message at <https://catircservices.org/_irc/v1/media/download/ATGt_9NM816m-yZpBiuSO-hrOsJrx_3cBIFkuan6tFN4kbVfFdDgldZxo2DrDOA9qCXDPuzbL05cmVkbzDqcgea_8AAAAAAAAGNhdGlyY3NlcnZpY2VzLm9yZy9SQkVEV0NNZlZqbnZETExBS3dldWR5T2c>)

17:15 <ckrenslehner[m]> Okay, I can run the tests now using https://github.com/knurling-rs/app-template 🚀... (full message at <https://catircservices.org/_irc/v1/media/download/Ac8nO8cLf2InDye1v_vAji_-6Y8_rD5bTYrzpTbONucArFsMe8bLvwxvrUNRhbyr-CFOZkv8S5G1mLaq9jHaemi_8AAAAAAAAGNhdGlyY3NlcnZpY2VzLm9yZy9kd25zWUJ5U3FYVnhZa0hnU1lqTUxFYXE>)

17:15 <ckrenslehner[m]> * Okay, I can run the tests now using https://github.com/knurling-rs/app-template 🚀... (full message at <https://catircservices.org/_irc/v1/media/download/AUNzbxrdlIOjBaYZ0ERN70d3-28-ynFX1DAbaug1M6_WKlY9xePOPQz9u6KVBXAWjMUIle1u1--jxEy9q78dcvW_8AAAAAAAAGNhdGlyY3NlcnZpY2VzLm9yZy9yeUFUTVlWY01YQkhhcnFaUXBzS1REc2U>)