Hi @runem, so ultimately I am afriad that we cannot officially offer a licence that fits the requirement of your project. Whilst the intention to backward engineer a USB Drivers would not constitute an API wrapper and indeed your intentions are purely for interaction, never the less it is still using the product in a fashion for which we cannot guarantee operation or quality and therefore officially cannot be supported by us, meaning we are unable to assist in providing data regarding the content of USB traffic.
Our apologies for the disappointing news, but hopefully you understand our position. Best Wishes.