An small Hello World Rust application for the AVR.
The program itself toggles a LED on PORTB periodically.
Designed for the ATmega328p.
How to set up a cross compiler
There are a few environment variables that need to be set first:
# Needed until https://github.com/japaric/xargo/pull/205 goes through,
# to tell it where to find avr-atmega328p.json:
export RUST_TARGET_PATH=`pwd`
# Likely needed if you've just compiled avr-rust from source:
export XARGO_RUST_SRC=/path_to_avr_rust/src
# (e.g. :if you built from sources and typed `git clone https://github.com/avr-rust/rust.git` in `~/avr-rust`, this would be `~/avr-rust/rust/src)Now to build, run:
rustup run avr-toolchain xargo build --target avr-atmega328p --release
There should now be an ELF file at target/atmega328p/release/blink.elf.