feather basic

[gauteh]

• feather 32u4: add board hal
• feather-32u4: set up blink example

[Rahix]

Hi, thanks for the PR!

I've left a few comments inline with the diff. Additionally, I think we should try to use more consistent naming: In some places you refer to the board as feather-32u4, in others you call it feather-32u4-basic. Unless there are other "Feather with ATmega32U4" boards out there, I'd just choose the shorter name everywhere?

[gauteh]

In some places you refer to the board as feather-32u4, in others you call it feather-32u4-basic. Unless there are other "Feather with ATmega32U4" boards out there, I'd just choose the shorter name everywhere?

There are several editions, much in common:

• basic
• bluefruit LE
• adalogger
• lora
• FONA

I only have the basic. Not sure if anyone still buys these.

[Rahix]

There are several editions, much in common:

Alright, then let's go with feather-32u4-basic everywhere.

[Rahix]

I think you should use the path to one of the actual example binaries here, to reduce confusion.

Suggested change

	$ avrdude -v -p m32u4 -cavr109 -P /dev/ttyACM0 -D -Uflash:w:target/avr-atmega32u4/release/sby-buoy-feather.elf:e
	$ cargo build --bin feather-blink
	$ avrdude -v -p m32u4 -cavr109 -P /dev/ttyACM0 -D -Uflash:w:../../target/avr-atmega32u4/debug/feather-blink.elf:e

(untested)