These atdfs were downloaded from http://packs.download.atmel.com/ and are kept in here to be converted to svd using atdf2svd and later to rust using svd2rust.
Please keep in mind that the names of these files have to be exactly the same as the names of the rust modules (ie atmega32u4 instead of ATmega32U4).
The atdf files in this directory are licensed under the Apache License, Version 2.0 (LICENSE-VENDOR).