12:47 <EthanGardner[m]> If i have a bootloader application and i want to use rtt inside of the boot loader as well as the application that it loads how what would be the correct way to do that

12:49 <EthanGardner[m]> s/how//

12:51 <EthanGardner[m]> * If i have a bootloader application and i want to use rtt inside of the boot loader as well as the application that it loads what would be the correct way to do that.... (full message at <https://catircservices.org/_irc/v1/media/download/AYM05RqEWtrQR313d3sq_tWwzKrPoe1UAAgEXuBK6u2lcGomHr85aSy9yMqzjaQalxSxBz4RmbyYjiFvjlhm5SK_8AAAAAAAAGNhdGlyY3NlcnZpY2VzLm9yZy9jcWxsa3hxS1pGbm9xRGlzUlFnTENIZ1Y>)

12:53 <berkus[m]> are they linked into a single binary?

12:54 <EthanGardner[m]> No separate binaries:... (full message at <https://catircservices.org/_irc/v1/media/download/AeYKEyQ65I1B_PNmdYcCwOoKIJNLGFkFh5KIAGN9kw_z45I8ve6bt9GlwXYVxMr72pUnAKKoaD5mikqfZOD7EO-_8AAAAAAAAGNhdGlyY3NlcnZpY2VzLm9yZy96bEpNeXVsbFVFY0xJdFNObHNrbkhjTWI>)

12:55 <EthanGardner[m]> Using embassy-boot

12:56 <berkus[m]> are they using a single RTT buffer or two separate ones?

12:57 <EthanGardner[m]> SIngle RTT buffer it seems like the error comes from the following

13:00 <berkus[m]> What if you enable disable-blocking-mode feature on defmt-rtt?

13:04 <EthanGardner[m]> Looking at the repo now and don't see that flag available - and getting an error saying it doesn't have that feature

13:04 <berkus[m]> hmm, I think every defmt-rtt you link into a binary will have its own rtt buffer

13:04 <berkus[m]> so with two apps you look at two separate buffers

13:04 <berkus[m]> and your host probably finds only one

13:05 <thejpster[m]> You’d need to implement a new defmt transport that sent messages to your boot loader, I think.

13:05 <thejpster[m]> Does anyone have any good USB Host examples, ideally on an RP2040?

14:54 <JamesMunns[m]> <thejpster[m]> "Does anyone have any good USB..." <- I think I've only seen usb host stack, it was the one for the 3d printer that used to be GPL, but they made the host stack MIT I think? I haven't seen anyone actually using it tho

14:58 <JamesMunns[m]> btw, I know we've mentioned **Embedded World**, but I went ahead and put up a discussion topic if anyone else wants to sound off that they will be there, and want to arrange to meet up!

14:58 <JamesMunns[m]> https://github.com/rust-embedded/wg/discussions/813

19:31 <berkus[m]> Hmmm, March

19:45 <rafael[m]> Is there any good no-std library for fusing sensor data? For my hobby-project tracked robot i implemented correction from data of motor encoders, as well as quaternion (using tilt and rotation mainly) for the drive task. As soon as i was done I realized that it will be not the brightest idea to have multiple independent corrections that will end up fighting each other. So I am looking to make a task that combines them and use only

19:45 <rafael[m]> the fused data for correction. I have never done that before, but before I get my hands dirty: Do You know of any good library, that could be a good start? Either becauseit is ready to use or even if it is just a good thing to look at to get ideas. Thanks!

21:12 <dngrs[m]> <JamesMunns[m]> "I think I've only seen usb..." <- recently this came out: https://docs.rs/cotton-usb-host/latest/cotton_usb_host/

21:12 <dngrs[m]> accompanying blog post: https://pdh11.blogspot.com/2024/12/things-i-learned-writing-usb-host-stack.html

21:19 <dngrs[m]> the [main repo](https://github.com/pdh11/cotton/tree/main) links to quite a few examples (as opposed to the aforementioned docs.rs page which only mentions one crate), sadly they're all pretty much undocumented.

21:19 <dngrs[m]> * the [main cotton repo](https://github.com/pdh11/cotton/tree/main) links

22:18 <sajattack[m]1> hello friends. I am once again asking if there is any decent way to implement auto-instrumented timed-function-call performance tracing on mips

22:18 <sajattack[m]1> I have gdb but not defmt

22:53 <sajattack[m]1> nevermind I decided to just recompile for x86 and give up

23:30 <berkus[m]> on mips, jees, that thing probably doesn't even have perfcnt regs

23:33 <jason-kairos[m]> Macros and a hardware timer

23:34 <jason-kairos[m]> * Macros, some assembly and a hardware timer from your CPU