Large list of documentation and examples at [Microchip Website}(https://www.microchip.com/en-us/product/ATMEGA32U4)
- AVR Open Source Programmer
- Setting up AVR-GCC Toolchain on Linux and Mac OS X was used in getting my devcontainer right
- Follow instructions on Arduboy website for Arduino IDE example build and flash
- Turn on Arduino IDE build and flash command line detailed logging
- Repeat build and capture build + linker flags
- bazel_esp32 work thanks to Simon Horlick's
- avr-for-bazel-demo work thanks to Evan Pratten