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In addition to Cliff's talk/blog -- which are absolutely outstanding -- I would recommend listening to the Twitter Space we did on Hubris and Humility last week.[0] It was a really fun conversation, and it also serves as a bit of a B-side for the talk in that it goes into some of the subtler details that we feel are important, but didn't quite rise to the level of the presentation. And of course, be sure to check out the source itself![1][2]
[0] https://www.youtube.com/watch?v=cypmufnPfLw
[1] https://github.com/oxidecomputer/hubris
[2] https://github.com/oxidecomputer/humility
In addition to Cliff's talk/blog -- which are absolutely outstanding -- I would recommend listening to the Twitter Space we did on Hubris and Humility last week.[0] It was a really fun conversation, and it also serves as a bit of a B-side for the talk in that it goes into some of the subtler details that we feel are important, but didn't quite rise to the level of the presentation. And of course, be sure to check out the source itself![1][2]
[0] https://www.youtube.com/watch?v=cypmufnPfLw
[1] https://github.com/oxidecomputer/hubris
[2] https://github.com/oxidecomputer/humility
The embedded-hal project supplies these for a wide variety of controllers, for SAMD specifically, https://github.com/atsamd-rs/atsamd .
Specifically these Rust register definitions are being auto-generated using SVD files published by the chip vendors (https://www.keil.com/pack/doc/CMSIS/SVD/html/index.html). For stm32 for example there are the auto-generated register definitions: https://github.com/stm32-rs/stm32-rs and then the HAL layers on top that try to build easy to use tools on top of the registers (e.g. an SPI or USART type with write and read functions). e.g. https://github.com/stm32-rs/stm32f4xx-hal for the stm32f4xx line
Specifically these Rust register definitions are being auto-generated using SVD files published by the chip vendors (https://www.keil.com/pack/doc/CMSIS/SVD/html/index.html). For stm32 for example there are the auto-generated register definitions: https://github.com/stm32-rs/stm32-rs and then the HAL layers on top that try to build easy to use tools on top of the registers (e.g. an SPI or USART type with write and read functions). e.g. https://github.com/stm32-rs/stm32f4xx-hal for the stm32f4xx line
As suggested, one way is to look into the porting Rockbox firmware for your MP3 player. However given that you do not have any background in embedded, I don't think it will be a easy path.
Would suggest that you try using the Arduino or RaspberryPI; these platforms are widely used, and you would be able to easily get help if you get stuck.
Build a simple project like a weather station or clock, which will keep you focused on a "hard" goal.
https://www.arduino.cc