Yihui Xiong / Mbed 2 deprecated TouchPixel

to colorize a colorful pixel with a simple touch using nfc technology

Dependencies:   Chainable_RGB_LED mbed

use Arch, NFC Shield and Grove - Chainable RGB LED to DIY a touch pixel. Then use an Android with NFC support to colorize it.

The project is on https://github.com/Seeed-Studio/TouchPixel

nfc/emulatetag.h@0:88960f3eeb2c, 2013-12-27 (annotated)

Committer:
yihui
Date:
Fri Dec 27 01:46:32 2013 +0000
Revision:
0:88960f3eeb2c
initial

Who changed what in which revision?

UserRevisionLine numberNew contents of line
yihui 0:88960f3eeb2c 1 /**************************************************************************/
yihui 0:88960f3eeb2c 2 /*!
yihui 0:88960f3eeb2c 3 @file emulatetag.h
yihui 0:88960f3eeb2c 4 @author Armin Wieser
yihui 0:88960f3eeb2c 5 @license BSD
yihui 0:88960f3eeb2c 6
yihui 0:88960f3eeb2c 7 Implemented using NFC forum documents & library of libnfc
yihui 0:88960f3eeb2c 8 */
yihui 0:88960f3eeb2c 9 /**************************************************************************/
yihui 0:88960f3eeb2c 10
yihui 0:88960f3eeb2c 11 #ifndef __EMULATETAG_H__
yihui 0:88960f3eeb2c 12 #define __EMULATETAG_H__
yihui 0:88960f3eeb2c 13
yihui 0:88960f3eeb2c 14 #include "PN532.h"
yihui 0:88960f3eeb2c 15
yihui 0:88960f3eeb2c 16 #define NDEF_MAX_LENGTH 128 // altough ndef can handle up to 0xfffe in size, arduino cannot.
yihui 0:88960f3eeb2c 17 typedef enum {COMMAND_COMPLETE, TAG_NOT_FOUND, FUNCTION_NOT_SUPPORTED, MEMORY_FAILURE, END_OF_FILE_BEFORE_REACHED_LE_BYTES} responseCommand;
yihui 0:88960f3eeb2c 18
yihui 0:88960f3eeb2c 19 class EmulateTag{
yihui 0:88960f3eeb2c 20
yihui 0:88960f3eeb2c 21 public:
yihui 0:88960f3eeb2c 22 EmulateTag(PN532Interface &interface) : pn532(interface), uidPtr(0), tagWrittenByInitiator(false), tagWriteable(true), updateNdefCallback(0) { }
yihui 0:88960f3eeb2c 23
yihui 0:88960f3eeb2c 24 bool init();
yihui 0:88960f3eeb2c 25
yihui 0:88960f3eeb2c 26 bool emulate(const uint16_t tgInitAsTargetTimeout = 0);
yihui 0:88960f3eeb2c 27
yihui 0:88960f3eeb2c 28 /*
yihui 0:88960f3eeb2c 29 * @param uid pointer to byte array of length 3 (uid is 4 bytes - first byte is fixed) or zero for uid
yihui 0:88960f3eeb2c 30 */
yihui 0:88960f3eeb2c 31 void setUid(uint8_t* uid = 0);
yihui 0:88960f3eeb2c 32
yihui 0:88960f3eeb2c 33 void setNdefFile(const uint8_t* ndef, const int16_t ndefLength);
yihui 0:88960f3eeb2c 34
yihui 0:88960f3eeb2c 35 void getContent(uint8_t** buf, uint16_t* length){
yihui 0:88960f3eeb2c 36 *buf = ndef_file + 2; // first 2 bytes = length
yihui 0:88960f3eeb2c 37 *length = (ndef_file[0] << 8) + ndef_file[1];
yihui 0:88960f3eeb2c 38 }
yihui 0:88960f3eeb2c 39
yihui 0:88960f3eeb2c 40 bool writeOccured(){
yihui 0:88960f3eeb2c 41 return tagWrittenByInitiator;
yihui 0:88960f3eeb2c 42 }
yihui 0:88960f3eeb2c 43
yihui 0:88960f3eeb2c 44 void setTagWriteable(bool setWriteable){
yihui 0:88960f3eeb2c 45 tagWriteable = setWriteable;
yihui 0:88960f3eeb2c 46 }
yihui 0:88960f3eeb2c 47
yihui 0:88960f3eeb2c 48 uint8_t* getNdefFilePtr(){
yihui 0:88960f3eeb2c 49 return ndef_file;
yihui 0:88960f3eeb2c 50 }
yihui 0:88960f3eeb2c 51
yihui 0:88960f3eeb2c 52 uint8_t getNdefMaxLength(){
yihui 0:88960f3eeb2c 53 return NDEF_MAX_LENGTH;
yihui 0:88960f3eeb2c 54 }
yihui 0:88960f3eeb2c 55
yihui 0:88960f3eeb2c 56 void attach(void (*func)(uint8_t *buf, uint16_t length)) {
yihui 0:88960f3eeb2c 57 updateNdefCallback = func;
yihui 0:88960f3eeb2c 58 };
yihui 0:88960f3eeb2c 59
yihui 0:88960f3eeb2c 60 private:
yihui 0:88960f3eeb2c 61 PN532 pn532;
yihui 0:88960f3eeb2c 62 uint8_t ndef_file[NDEF_MAX_LENGTH];
yihui 0:88960f3eeb2c 63 uint8_t* uidPtr;
yihui 0:88960f3eeb2c 64 bool tagWrittenByInitiator;
yihui 0:88960f3eeb2c 65 bool tagWriteable;
yihui 0:88960f3eeb2c 66 void (*updateNdefCallback)(uint8_t *ndef, uint16_t length);
yihui 0:88960f3eeb2c 67
yihui 0:88960f3eeb2c 68 void setResponse(responseCommand cmd, uint8_t* buf, uint8_t* sendlen, uint8_t sendlenOffset = 0);
yihui 0:88960f3eeb2c 69 };
yihui 0:88960f3eeb2c 70
yihui 0:88960f3eeb2c 71 #endif