72 lines
1.9 KiB
C++
72 lines
1.9 KiB
C++
/**************************************************************************/
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/*!
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@file emulatetag.h
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@author Armin Wieser
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@license BSD
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Implemented using NFC forum documents & library of libnfc
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*/
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/**************************************************************************/
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#ifndef __EMULATETAG_H__
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#define __EMULATETAG_H__
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#include "PN532.h"
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#define NDEF_MAX_LENGTH 128 // altough ndef can handle up to 0xfffe in size, arduino cannot.
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typedef enum {COMMAND_COMPLETE, TAG_NOT_FOUND, FUNCTION_NOT_SUPPORTED, MEMORY_FAILURE, END_OF_FILE_BEFORE_REACHED_LE_BYTES} responseCommand;
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class EmulateTag{
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public:
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EmulateTag(PN532Interface &interface) : pn532(interface), uidPtr(0), tagWrittenByInitiator(false), tagWriteable(true), updateNdefCallback(0) { }
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bool init();
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bool emulate(const uint16_t tgInitAsTargetTimeout = 0);
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/*
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* @param uid pointer to byte array of length 3 (uid is 4 bytes - first byte is fixed) or zero for uid
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*/
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void setUid(uint8_t* uid = 0);
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void setNdefFile(const uint8_t* ndef, const int16_t ndefLength);
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void getContent(uint8_t** buf, uint16_t* length){
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*buf = ndef_file + 2; // first 2 bytes = length
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*length = (ndef_file[0] << 8) + ndef_file[1];
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}
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bool writeOccured(){
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return tagWrittenByInitiator;
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}
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void setTagWriteable(bool setWriteable){
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tagWriteable = setWriteable;
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}
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uint8_t* getNdefFilePtr(){
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return ndef_file;
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}
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uint8_t getNdefMaxLength(){
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return NDEF_MAX_LENGTH;
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}
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void attach(void (*func)(uint8_t *buf, uint16_t length)) {
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updateNdefCallback = func;
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};
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private:
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PN532 pn532;
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uint8_t ndef_file[NDEF_MAX_LENGTH];
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uint8_t* uidPtr;
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bool tagWrittenByInitiator;
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bool tagWriteable;
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void (*updateNdefCallback)(uint8_t *ndef, uint16_t length);
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void setResponse(responseCommand cmd, uint8_t* buf, uint8_t* sendlen, uint8_t sendlenOffset = 0);
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};
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#endif
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