Im working on an small firmware that runs on an badger 2040. it should display tickets(aztec and qr) and a menu to select different apps. I postponed the aztec

Im working on an small firmware that runs on an badger 2040. it should display tickets(aztec and qr) and a menu to select different apps. I postponed the aztec encoding to later, because there is no lib that runs without the stdlib and no explanation how aztec works in detail.