I'm loving Embassy.
Coming from a lot of bare metal C and FreeRTOS it finally feels like embedded is getting a toolchain that is actually modern and better.
Some of that isn't just Embassy but the surrounding ecosystem, some highlights:
* probe-rs w/cargo run integration
* defmt logging (combined with probe-rs and rtt it's very nice)
* embedded_hal (and in my case stm32-rs)
I have also tried RTIC but I decided to keep going with Embassy because I like the async ergonomics more and the few times it's been a downside/missing functionality (no existing async driver for specific peripherals basically) it wasn't to hard to implement what I needed.
I was surprised it just works out of the box on OS X also, generally speaking I would always end up having to use Linux to develop for embedded. Being able to compile on fast Apple M hardware and then run immediately with zero friction is awesome.
It took a little bit to get my head around how to share access to peripherals etc but once I did it's been great and it's nice to know that locking semantics are essentially enforced at compile time so it's actually not possible to have 2 things stomping over the same bus etc which can sometimes be a very hard bug to track down when working with big and fast SOCs.
Other really big aspect Embassy has been good for is really high quality USB and networking stacks. I am using both the USB stack (for PLDM over USB) and Ethernet w/the TCP stack in embassy_net and both have been flawless.
Only real downsides I can think of are it can sometimes be hard to onboard folk that are used to copy/paste from vendor examples and sometimes communicating and debugging with vendors themselves when they aren't familar and won't engage unless you can reproduce on the vendor HAL.
So overall really happy with it and I highly recommend trying it out especially if you are in the STM ecosphere.
Can it use multiple cores, eg on the ESP32? It doesn't so say on the landing page.
UPDATE: it seems so, using a second executor. There is "embassy_sync" to communicate.
>it finally feels like embedded is getting a toolchain that is actually modern and better
Last time i tried embassy, it pulled over 100 dependencies just to build a blinky. Its great for hobbyist programming but i doubt its going to be used in any industrial application any time soon.