Digispark ATtiny85 Christmas light

This is a rust reimplementaion for https://github.com/simonsso/christmas_lights targeting only the Digispark ATtiny low cost hardware platform.

This project is created using Tomasz Wiszkowski's templates

Requirements

To use this, you need to

• download, or better - build - micronucleus from Github repo.
• install Rust nightly
• install AVR GCC

rustup install nightly
rustup default nightly
sudo apt install avr-gcc

ATTiny85 notes

Due to limitations of the programmable memory on this microcontroller,

• be sure to build and run ---release version (cargo build --release or cargo run --release) - otherwise your code just won't fit.
• the code interfaces registers directly to preserve programmable memory (believe it or not, it's also faster this way)

Other notes

• This has only been used on Linux. Not sure how this will work on other platforms.
• When using Arduino IDE, replace the Digispark-shipped micronucleus with the one you built.
• micronucleus repo has bootrom upgrades that can be used to update your attiny85
• Updated attiny85 won't work with obsolete version shipped by Digispark.

Update 2024

cargo +nightly-2022-07-10 run --release