1a2e5ee4
 henyxia
Big revision
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/**************************************************************************/
/*!
@file emulatetag.h
@author Armin Wieser
@license BSD
Implemented using NFC forum documents & library of libnfc
*/
/**************************************************************************/
#ifndef __EMULATETAG_H__
#define __EMULATETAG_H__
#include "PN532.h"
#define NDEF_MAX_LENGTH 128 // altough ndef can handle up to 0xfffe in size, arduino cannot.
typedef enum {COMMAND_COMPLETE, TAG_NOT_FOUND, FUNCTION_NOT_SUPPORTED, MEMORY_FAILURE, END_OF_FILE_BEFORE_REACHED_LE_BYTES} responseCommand;
class EmulateTag{
public:
EmulateTag(PN532Interface &interface) : pn532(interface), uidPtr(0), tagWrittenByInitiator(false), tagWriteable(true), updateNdefCallback(0) { }
bool init();
bool emulate(const uint16_t tgInitAsTargetTimeout = 0);
/*
* @param uid pointer to byte array of length 3 (uid is 4 bytes - first byte is fixed) or zero for uid
*/
void setUid(uint8_t* uid = 0);
void setNdefFile(const uint8_t* ndef, const int16_t ndefLength);
void getContent(uint8_t** buf, uint16_t* length){
*buf = ndef_file + 2; // first 2 bytes = length
*length = (ndef_file[0] << 8) + ndef_file[1];
}
bool writeOccured(){
return tagWrittenByInitiator;
}
void setTagWriteable(bool setWriteable){
tagWriteable = setWriteable;
}
uint8_t* getNdefFilePtr(){
return ndef_file;
}
uint8_t getNdefMaxLength(){
return NDEF_MAX_LENGTH;
}
void attach(void (*func)(uint8_t *buf, uint16_t length)) {
updateNdefCallback = func;
};
private:
PN532 pn532;
uint8_t ndef_file[NDEF_MAX_LENGTH];
uint8_t* uidPtr;
bool tagWrittenByInitiator;
bool tagWriteable;
void (*updateNdefCallback)(uint8_t *ndef, uint16_t length);
void setResponse(responseCommand cmd, uint8_t* buf, uint8_t* sendlen, uint8_t sendlenOffset = 0);
};
#endif
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