transport.h

Overview

Woz NFC transport seam. One reader backend is selected at build time (Kconfig choice WOZ_NFC_TRANSPORT): the upstream ST25R/RFAL transport, the in-tree PN532 transport, or none. The add-on application calls these five functions instead of a concrete transport class; the selected backend supplies the definitions. The semantics mirror the upstream NfcTransportRfal public API exactly: - Init(): bring up the bus/PAL. Failure is logged by the caller but not fatal. - Start(): begin polling for a User Device. May be called again after Stop(). - Stop(): cease polling and switch the RF field off. - Send(): asynchronous. Queues one APDU for the activated device and returns; the response is delivered later via AliroStack::HandleSessionData() from the Aliro workqueue. Returns ALIRO_INVALID_STATE when no device is activated. - Terminate(): the stack is done with the session; drop the device and return to polling. Does not call back into the stack. The backend owns the session lifecycle in the other direction: on ISO-DEP activation it calls AliroStack::CreateSession(ConnectionHandle::Nfc()), on device loss or exchange failure DestroySession(), both from the Aliro workqueue, matching the upstream RFAL transport's threading.

used by transport_none.cpp transport_pn532.cpp transport_rfal.cpp