mirror of
https://github.com/DarkFlippers/unleashed-firmware
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d92b0a82cc
"A long time ago in a galaxy far, far away...." we started NFC subsystem refactoring. Starring: - @gornekich - NFC refactoring project lead, architect, senior developer - @gsurkov - architect, senior developer - @RebornedBrain - senior developer Supporting roles: - @skotopes, @DrZlo13, @hedger - general architecture advisors, code review - @Astrrra, @doomwastaken, @Hellitron, @ImagineVagon333 - quality assurance Special thanks: @bettse, @pcunning, @nxv, @noproto, @AloneLiberty and everyone else who has been helping us all this time and contributing valuable knowledges, ideas and source code.
104 lines
3.3 KiB
C
104 lines
3.3 KiB
C
/**
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* @file nfc_poller.h
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* @brief NFC card reading library.
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*
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* Once started, it will try to activate and read a card using the designated protocol,
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* which is usually obtained by creating and starting an NfcScanner first.
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*
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* @see nfc_scanner.h
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*
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* When running, NfcPoller will generate events that the calling code must handle
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* by providing a callback function. The events passed to the callback are protocol-specific
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* and may include errors, state changes, data reception, special function requests and more.
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*
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*/
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#pragma once
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#include <nfc/protocols/nfc_generic_event.h>
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#include <nfc/protocols/nfc_device_base.h>
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#ifdef __cplusplus
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extern "C" {
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#endif
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/**
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* @brief NfcPoller opaque type definition.
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*/
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typedef struct NfcPoller NfcPoller;
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/**
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* @brief Allocate an NfcPoller instance.
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*
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* @param[in] nfc pointer to an Nfc instance.
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* @param[in] protocol identifier of the protocol to be used.
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* @returns pointer to an allocated instance.
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*
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* @see nfc.h
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*/
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NfcPoller* nfc_poller_alloc(Nfc* nfc, NfcProtocol protocol);
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/**
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* @brief Delete an NfcPoller instance.
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*
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* @param[in,out] instance pointer to the instance to be deleted.
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*/
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void nfc_poller_free(NfcPoller* instance);
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/**
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* @brief Start an NfcPoller instance.
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*
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* The callback logic is protocol-specific, so it cannot be described here in detail.
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* However, the callback return value ALWAYS determines what the poller should do next:
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* to continue whatever it was doing prior to the callback run or to stop.
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*
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* @param[in,out] instance pointer to the instance to be started.
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* @param[in] callback pointer to a user-defined callback function which will receive events.
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* @param[in] context pointer to a user-specific context (will be passed to the callback).
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*/
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void nfc_poller_start(NfcPoller* instance, NfcGenericCallback callback, void* context);
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/**
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* @brief Stop an NfcPoller instance.
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*
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* The reading process can be stopped explicitly (the other way is via the callback return value).
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*
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* @param[in,out] instance pointer to the instance to be stopped.
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*/
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void nfc_poller_stop(NfcPoller* instance);
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/**
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* @brief Detect whether there is a card supporting a particular protocol in the vicinity.
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*
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* The behaviour of this function is protocol-defined, in general, it will do whatever is
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* necessary to determine whether a card supporting the current protocol is in the vicinity
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* and whether it is functioning normally.
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*
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* It is used automatically inside NfcScanner, so there is usually no need
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* to call it explicitly.
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*
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* @see nfc_scanner.h
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*
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* @param[in,out] instance pointer to the instance to perform the detection with.
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* @returns true if a supported card was detected, false otherwise.
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*/
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bool nfc_poller_detect(NfcPoller* instance);
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/**
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* @brief Get the protocol identifier an NfcPoller instance was created with.
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*
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* @param[in] instance pointer to the instance to be queried.
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* @returns identifier of the protocol used by the instance.
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*/
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NfcProtocol nfc_poller_get_protocol(const NfcPoller* instance);
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/**
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* @brief Get the data that was that was gathered during the reading process.
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*
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* @param[in] instance pointer to the instance to be queried.
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* @returns pointer to the NFC device data.
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*/
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const NfcDeviceData* nfc_poller_get_data(const NfcPoller* instance);
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#ifdef __cplusplus
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}
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#endif
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