Jan Paw

@Rahix, Iwill review #129 and them, I'm happy to start with ref. for ATmega2560. Not sure if progressing on Nano Every stuff is good.

@Rahix I think `ATmega1280` can be checked.

@Rahix do you have any idea what I can progress after `ATiny` mcu's?

@drmorr0, @Rahix Right now I will be not able to progress on SPI support. Please start if you can.

I start review of this board. Looks like there is inconsistency in chip and board clock setup https://github.com/arduino/Arduino/issues/9017 Not sure how we should support this. @Rahix, should we setup by...

1. Looks like prescaler is better option. It's better to be explicite 1. [Duration](https://docs.rs/embedded-time/0.9.1/embedded_time/duration/trait.Duration.html)? Percentage seems not very precise. Aret there any usecases where percentage is common? 1. Are we...

First option will suffer from this drawback only when we will publish `generic` part to frequent. Like now with #77 we want to move to new `hal`. For users will...

Maybe will be worth to do `features` as in https://github.com/Rahix/avr-device ? The other way will be split `generic` to another repo. Maybe you can share why we have such design...

Maybe will can go with simple change? Move from: `Double` -> `BigDecimal` `Long` -> `BigInt` Is there any idea how this should be solved? I'm happy to help here.