PN532 Driver library This library provides an abstract API to drive the pn532 nfc chip, with I2C/HSU/SPI interface. Its based on the Seeed Studio's Arduino version.
Dependents: PN532_ReadUid Nfctest2
Diff: PN532/emulatetag.h
- Revision:
- 0:db8030e71f55
diff -r 000000000000 -r db8030e71f55 PN532/emulatetag.h --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/PN532/emulatetag.h Tue Sep 13 06:01:19 2016 +0000 @@ -0,0 +1,71 @@ +/**************************************************************************/ +/*! + @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