rtstragedy2 [she/her, pup/pup's]

if it helps I think you’re a genuinely kind person and I enjoy spending time with you. You have value and belong here

I think I’ve finally turned a corner with embedded Rust, I tricked a Pi Pico 2 into playing NSF files!

I’m scared of how many thousands of lines of code the NES emulator I had to write was, and for a while it felt like it was never going to be fast enough to run on a 150MHz processor, but some optimization that was within run-to-run variance on the benchmarks on my laptop must have really favoured the pico 2, and now there’s no dropouts!

Lessons learned:

• as far as I can tell, if you overflow stack on these microcontrollers you won’t get a fancy stack overflow error, it will just hard fault (although I suspect sometimes it won’t even fault and will just give you fun UB). Lost a day to that.
• goddamn lifetimes and statics and interior mutability etc. caused me so much grief. There’s a crate called embedded_alloc which gives you access to Rc, Arc, Vec, etc by actually letting you define a heap. I highly recommend this although remember that when a Vec needs to grow it needs 3x it’s previous size in memory, because it creates a new Vec with 2x previous capacity, copies from the old Vec, then drops it.
• I didn’t end up using both cores (yet) but Embassy doesn’t appear to support the doorbell IRQs or the inter-core FIFO queues, so if you want those you need to use rp-hal.
• The embedded-sdmmc library certainly takes some getting used to. You need to implement long file name support yourself, no file sorting (do it yourself but use a master branch), use RawFile instead of File because it seems to be so ready to drop my files when I look the other way, etc.

it’s shocking to me how much simpler analog audio processing really is than DSP, I’m sure if you’re wanting a good sound there’s still a lot of math in analog but “just throw a cap in there and see how it sounds” is fascinating to me for silly little projects I want to do

sick I’ve been meaning to learn about how analog filters are built as I figured it would be a pretty simple circuit. I’m gonna have to breadboard about this

I saw a guy turn a square wave into a sawtooth wave just by adding a cap to the output line yesterday in a video. it made sense in retrospect but I just never thought about it (and yes it also coloured the sound a lot which was also surprising. do caps have frequency responses??)

but they smell much worse when you open them

I gotta be honest, i have hundreds of hours in factorio and I personally just like it way better without the tower defense stuff and play on peaceful. I just think it’s more fun that way, the constant interruptions are stressful.

longer than War and Peace.

no way… I think I want a hard copy now of it and a few other ao3 things just so I can see how thick they are. I guess when something’s interesting it doesn’t matter how many pages it is

this tbh I’m in a situation where I hear an echo I stop talking too

that’s cool congrats!

collars are based actually

I feel crazy for this but I’ve been needing to take allergy meds. In December. I miss winter.

TOKYO JUNGLE

i recommend going in as blind as possible, you get to play as cute animals

I think you are too

ok

no

I am not American but I work with a bunch of them so yesterday and today and tomorrow is just trying desperately to find something to do to look busy at work and it’s exhausting

I have a friend there and she had to switch to DIY when PP stopped letting people make appointments IIRC. On the plus side I hear that one vial of the right stuff can last like a year, but I understand the apprehension.

jesus fuck i miss my parents’ tiny dogs and also them i guess, but the dogs were cuter.

im somewhat shocked by this but, still, abiotic factor. 50 hours in and it still changing things up and being interesting but i think we’re getting near the end.