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Dependencies:   Chainable_RGB_LED mbed

nfc/NfcAdapter.cpp@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 #include <NfcAdapter.h>
yihui 0:88960f3eeb2c 2 #include <PN532_debug.h>
yihui 0:88960f3eeb2c 3
yihui 0:88960f3eeb2c 4 NfcAdapter::NfcAdapter(PN532Interface &interface)
yihui 0:88960f3eeb2c 5 {
yihui 0:88960f3eeb2c 6 shield = new PN532(interface);
yihui 0:88960f3eeb2c 7 }
yihui 0:88960f3eeb2c 8
yihui 0:88960f3eeb2c 9 NfcAdapter::~NfcAdapter(void)
yihui 0:88960f3eeb2c 10 {
yihui 0:88960f3eeb2c 11 delete shield;
yihui 0:88960f3eeb2c 12 }
yihui 0:88960f3eeb2c 13
yihui 0:88960f3eeb2c 14 void NfcAdapter::begin()
yihui 0:88960f3eeb2c 15 {
yihui 0:88960f3eeb2c 16 shield->begin();
yihui 0:88960f3eeb2c 17
yihui 0:88960f3eeb2c 18 uint32_t versiondata = shield->getFirmwareVersion();
yihui 0:88960f3eeb2c 19 if (! versiondata) {
yihui 0:88960f3eeb2c 20 DMSG("Didn't find PN53x board");
yihui 0:88960f3eeb2c 21 while (1); // halt
yihui 0:88960f3eeb2c 22 }
yihui 0:88960f3eeb2c 23
yihui 0:88960f3eeb2c 24 DMSG("Found chip PN5%2X\r\n", versiondata >> 24);
yihui 0:88960f3eeb2c 25 DMSG("Firmware V%d.%d\r\n", (versiondata >> 16) & 0xFF, (versiondata >> 8) & 0xFF);
yihui 0:88960f3eeb2c 26
yihui 0:88960f3eeb2c 27 // configure board to read RFID tags
yihui 0:88960f3eeb2c 28 shield->SAMConfig();
yihui 0:88960f3eeb2c 29 }
yihui 0:88960f3eeb2c 30
yihui 0:88960f3eeb2c 31 bool NfcAdapter::tagPresent()
yihui 0:88960f3eeb2c 32 {
yihui 0:88960f3eeb2c 33 uint8_t success;
yihui 0:88960f3eeb2c 34 uidLength = 0;
yihui 0:88960f3eeb2c 35
yihui 0:88960f3eeb2c 36 // TODO is cast of uidLength OK?
yihui 0:88960f3eeb2c 37 success = shield->readPassiveTargetID(PN532_MIFARE_ISO14443A, uid, (uint8_t*)&uidLength);
yihui 0:88960f3eeb2c 38
yihui 0:88960f3eeb2c 39 // if (success)
yihui 0:88960f3eeb2c 40 // {
yihui 0:88960f3eeb2c 41 // DMSG("Found an ISO14443A card");
yihui 0:88960f3eeb2c 42 // DMSG(" UID Length: ");Serial.print(uidLength, DEC);DMSG(" uint8_ts");
yihui 0:88960f3eeb2c 43 // DMSG(" UID Value: ");
yihui 0:88960f3eeb2c 44 // shield->PrintHex(uid, uidLength);
yihui 0:88960f3eeb2c 45 // DMSG("");
yihui 0:88960f3eeb2c 46 // }
yihui 0:88960f3eeb2c 47
yihui 0:88960f3eeb2c 48 return success;
yihui 0:88960f3eeb2c 49 }
yihui 0:88960f3eeb2c 50
yihui 0:88960f3eeb2c 51 NfcTag NfcAdapter::read()
yihui 0:88960f3eeb2c 52 {
yihui 0:88960f3eeb2c 53
yihui 0:88960f3eeb2c 54 uint8_t type = guessTagType();
yihui 0:88960f3eeb2c 55
yihui 0:88960f3eeb2c 56 // TODO need an abstraction of Driver
yihui 0:88960f3eeb2c 57 if (type == TAG_TYPE_MIFARE_CLASSIC)
yihui 0:88960f3eeb2c 58 {
yihui 0:88960f3eeb2c 59 #ifdef NDEF_DEBUG
yihui 0:88960f3eeb2c 60 DMSG("Reading Mifare Classic");
yihui 0:88960f3eeb2c 61 #endif
yihui 0:88960f3eeb2c 62 MifareClassic mifareClassic = MifareClassic(*shield);
yihui 0:88960f3eeb2c 63 return mifareClassic.read(uid, uidLength);
yihui 0:88960f3eeb2c 64 }
yihui 0:88960f3eeb2c 65 else if (type == TAG_TYPE_2)
yihui 0:88960f3eeb2c 66 {
yihui 0:88960f3eeb2c 67 #ifdef NDEF_DEBUG
yihui 0:88960f3eeb2c 68 DMSG("Reading Mifare Ultralight");
yihui 0:88960f3eeb2c 69 #endif
yihui 0:88960f3eeb2c 70 MifareUltralight ultralight = MifareUltralight(*shield);
yihui 0:88960f3eeb2c 71 return ultralight.read(uid, uidLength);
yihui 0:88960f3eeb2c 72 }
yihui 0:88960f3eeb2c 73 else if (type == TAG_TYPE_UNKNOWN)
yihui 0:88960f3eeb2c 74 {
yihui 0:88960f3eeb2c 75 DMSG("Can not determine tag type");
yihui 0:88960f3eeb2c 76 //DMSG("Can not determine tag type for ATQA 0x");
yihui 0:88960f3eeb2c 77 //Serial.print(atqa, HEX);DMSG(" SAK 0x");DMSG(sak, HEX);
yihui 0:88960f3eeb2c 78 return NfcTag(uid, uidLength);
yihui 0:88960f3eeb2c 79 }
yihui 0:88960f3eeb2c 80 else
yihui 0:88960f3eeb2c 81 {
yihui 0:88960f3eeb2c 82 DMSG("No driver for card type ");
yihui 0:88960f3eeb2c 83 DMSG_INT(type);
yihui 0:88960f3eeb2c 84 // TODO should set type here
yihui 0:88960f3eeb2c 85 return NfcTag(uid, uidLength);
yihui 0:88960f3eeb2c 86 }
yihui 0:88960f3eeb2c 87
yihui 0:88960f3eeb2c 88 }
yihui 0:88960f3eeb2c 89
yihui 0:88960f3eeb2c 90 bool NfcAdapter::write(NdefMessage& ndefMessage)
yihui 0:88960f3eeb2c 91 {
yihui 0:88960f3eeb2c 92 bool success;
yihui 0:88960f3eeb2c 93
yihui 0:88960f3eeb2c 94 if (uidLength == 4)
yihui 0:88960f3eeb2c 95 {
yihui 0:88960f3eeb2c 96 MifareClassic mifareClassic = MifareClassic(*shield);
yihui 0:88960f3eeb2c 97 success = mifareClassic.write(ndefMessage, uid, uidLength);
yihui 0:88960f3eeb2c 98 }
yihui 0:88960f3eeb2c 99 else
yihui 0:88960f3eeb2c 100 {
yihui 0:88960f3eeb2c 101 DMSG("Unsupported Tag");
yihui 0:88960f3eeb2c 102 success = false;
yihui 0:88960f3eeb2c 103 }
yihui 0:88960f3eeb2c 104 return success;
yihui 0:88960f3eeb2c 105 }
yihui 0:88960f3eeb2c 106
yihui 0:88960f3eeb2c 107 // TODO this should return a Driver MifareClassic, MifareUltralight, Type 4, Unknown
yihui 0:88960f3eeb2c 108 // Guess Tag Type by looking at the ATQA and SAK values
yihui 0:88960f3eeb2c 109 // Need to follow spec for Card Identification. Maybe AN1303, AN1305 and ???
yihui 0:88960f3eeb2c 110 unsigned int NfcAdapter::guessTagType()
yihui 0:88960f3eeb2c 111 {
yihui 0:88960f3eeb2c 112
yihui 0:88960f3eeb2c 113 // 4 uint8_t id - Mifare Classic
yihui 0:88960f3eeb2c 114 // - ATQA 0x4 && SAK 0x8
yihui 0:88960f3eeb2c 115 // 7 uint8_t id
yihui 0:88960f3eeb2c 116 // - ATQA 0x44 && SAK 0x8 - Mifare Classic
yihui 0:88960f3eeb2c 117 // - ATQA 0x44 && SAK 0x0 - Mifare Ultralight NFC Forum Type 2
yihui 0:88960f3eeb2c 118 // - ATQA 0x344 && SAK 0x20 - NFC Forum Type 4
yihui 0:88960f3eeb2c 119
yihui 0:88960f3eeb2c 120 if (uidLength == 4)
yihui 0:88960f3eeb2c 121 {
yihui 0:88960f3eeb2c 122 return TAG_TYPE_MIFARE_CLASSIC;
yihui 0:88960f3eeb2c 123 }
yihui 0:88960f3eeb2c 124 else
yihui 0:88960f3eeb2c 125 {
yihui 0:88960f3eeb2c 126 return TAG_TYPE_2;
yihui 0:88960f3eeb2c 127 }
yihui 0:88960f3eeb2c 128 }