NFC library using PN532 to read/write NDEF Messages to NFC tags
Dependents: Seeed_NFC_Shield_write Nucleo_test_nfc
Fork of PN532 by
emulatetag.cpp@6:26c1b3b6c192, 2014-03-25 (annotated)
- Committer:
- screamer
- Date:
- Tue Mar 25 16:48:10 2014 +0000
- Revision:
- 6:26c1b3b6c192
- Parent:
- 3:4189a10038e6
Fixed compile warnings
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
yihui | 3:4189a10038e6 | 1 | /**************************************************************************/ |
yihui | 3:4189a10038e6 | 2 | /*! |
yihui | 3:4189a10038e6 | 3 | @file emulatetag.cpp |
yihui | 3:4189a10038e6 | 4 | @author Armin Wieser |
yihui | 3:4189a10038e6 | 5 | @license BSD |
yihui | 3:4189a10038e6 | 6 | */ |
yihui | 3:4189a10038e6 | 7 | /**************************************************************************/ |
yihui | 3:4189a10038e6 | 8 | |
yihui | 3:4189a10038e6 | 9 | #include "emulatetag.h" |
yihui | 3:4189a10038e6 | 10 | #include "PN532_debug.h" |
yihui | 3:4189a10038e6 | 11 | |
yihui | 3:4189a10038e6 | 12 | #include <string.h> |
yihui | 3:4189a10038e6 | 13 | |
yihui | 3:4189a10038e6 | 14 | #define MAX_TGREAD |
yihui | 3:4189a10038e6 | 15 | |
yihui | 3:4189a10038e6 | 16 | |
yihui | 3:4189a10038e6 | 17 | // Command APDU |
yihui | 3:4189a10038e6 | 18 | #define C_APDU_CLA 0 |
yihui | 3:4189a10038e6 | 19 | #define C_APDU_INS 1 // instruction |
yihui | 3:4189a10038e6 | 20 | #define C_APDU_P1 2 // parameter 1 |
yihui | 3:4189a10038e6 | 21 | #define C_APDU_P2 3 // parameter 2 |
yihui | 3:4189a10038e6 | 22 | #define C_APDU_LC 4 // length command |
yihui | 3:4189a10038e6 | 23 | #define C_APDU_DATA 5 // data |
yihui | 3:4189a10038e6 | 24 | |
yihui | 3:4189a10038e6 | 25 | #define C_APDU_P1_SELECT_BY_ID 0x00 |
yihui | 3:4189a10038e6 | 26 | #define C_APDU_P1_SELECT_BY_NAME 0x04 |
yihui | 3:4189a10038e6 | 27 | |
yihui | 3:4189a10038e6 | 28 | // Response APDU |
yihui | 3:4189a10038e6 | 29 | #define R_APDU_SW1_COMMAND_COMPLETE 0x90 |
yihui | 3:4189a10038e6 | 30 | #define R_APDU_SW2_COMMAND_COMPLETE 0x00 |
yihui | 3:4189a10038e6 | 31 | |
yihui | 3:4189a10038e6 | 32 | #define R_APDU_SW1_NDEF_TAG_NOT_FOUND 0x6a |
yihui | 3:4189a10038e6 | 33 | #define R_APDU_SW2_NDEF_TAG_NOT_FOUND 0x82 |
yihui | 3:4189a10038e6 | 34 | |
yihui | 3:4189a10038e6 | 35 | #define R_APDU_SW1_FUNCTION_NOT_SUPPORTED 0x6A |
yihui | 3:4189a10038e6 | 36 | #define R_APDU_SW2_FUNCTION_NOT_SUPPORTED 0x81 |
yihui | 3:4189a10038e6 | 37 | |
yihui | 3:4189a10038e6 | 38 | #define R_APDU_SW1_MEMORY_FAILURE 0x65 |
yihui | 3:4189a10038e6 | 39 | #define R_APDU_SW2_MEMORY_FAILURE 0x81 |
yihui | 3:4189a10038e6 | 40 | |
yihui | 3:4189a10038e6 | 41 | #define R_APDU_SW1_END_OF_FILE_BEFORE_REACHED_LE_BYTES 0x62 |
yihui | 3:4189a10038e6 | 42 | #define R_APDU_SW2_END_OF_FILE_BEFORE_REACHED_LE_BYTES 0x82 |
yihui | 3:4189a10038e6 | 43 | |
yihui | 3:4189a10038e6 | 44 | // ISO7816-4 commands |
yihui | 3:4189a10038e6 | 45 | #define ISO7816_SELECT_FILE 0xA4 |
yihui | 3:4189a10038e6 | 46 | #define ISO7816_READ_BINARY 0xB0 |
yihui | 3:4189a10038e6 | 47 | #define ISO7816_UPDATE_BINARY 0xD6 |
yihui | 3:4189a10038e6 | 48 | |
yihui | 3:4189a10038e6 | 49 | typedef enum { NONE, CC, NDEF } tag_file; // CC ... Compatibility Container |
yihui | 3:4189a10038e6 | 50 | |
yihui | 3:4189a10038e6 | 51 | const uint8_t compatibility_container[] = { |
yihui | 3:4189a10038e6 | 52 | 0, 0x0F, |
yihui | 3:4189a10038e6 | 53 | 0x20, |
yihui | 3:4189a10038e6 | 54 | 0, 0x54, |
yihui | 3:4189a10038e6 | 55 | 0, 0xFF, |
yihui | 3:4189a10038e6 | 56 | 0x04, |
yihui | 3:4189a10038e6 | 57 | 0x06, |
yihui | 3:4189a10038e6 | 58 | 0xE1, 0x04, |
yihui | 3:4189a10038e6 | 59 | 0xFF, 0xFE, |
yihui | 3:4189a10038e6 | 60 | 0x00, |
yihui | 3:4189a10038e6 | 61 | 0x00 |
yihui | 3:4189a10038e6 | 62 | }; |
yihui | 3:4189a10038e6 | 63 | |
yihui | 3:4189a10038e6 | 64 | bool EmulateTag::init(){ |
yihui | 3:4189a10038e6 | 65 | pn532.begin(); |
yihui | 3:4189a10038e6 | 66 | return pn532.SAMConfig(); |
yihui | 3:4189a10038e6 | 67 | } |
yihui | 3:4189a10038e6 | 68 | |
yihui | 3:4189a10038e6 | 69 | void EmulateTag::setNdefFile(const uint8_t* ndef, const int16_t ndefLength){ |
yihui | 3:4189a10038e6 | 70 | if(ndefLength > (NDEF_MAX_LENGTH -2)){ |
yihui | 3:4189a10038e6 | 71 | DMSG("ndef file too large (> NDEF_MAX_LENGHT -2) - aborting"); |
yihui | 3:4189a10038e6 | 72 | return; |
yihui | 3:4189a10038e6 | 73 | } |
yihui | 3:4189a10038e6 | 74 | |
yihui | 3:4189a10038e6 | 75 | ndef_file[0] = ndefLength >> 8; |
yihui | 3:4189a10038e6 | 76 | ndef_file[1] = ndefLength & 0xFF; |
yihui | 3:4189a10038e6 | 77 | memcpy(ndef_file+2, ndef, ndefLength); |
yihui | 3:4189a10038e6 | 78 | } |
yihui | 3:4189a10038e6 | 79 | |
yihui | 3:4189a10038e6 | 80 | void EmulateTag::setUid(uint8_t* uid){ |
yihui | 3:4189a10038e6 | 81 | uidPtr = uid; |
yihui | 3:4189a10038e6 | 82 | } |
yihui | 3:4189a10038e6 | 83 | |
yihui | 3:4189a10038e6 | 84 | bool EmulateTag::emulate(const uint16_t tgInitAsTargetTimeout){ |
yihui | 3:4189a10038e6 | 85 | |
yihui | 3:4189a10038e6 | 86 | uint8_t command[] = { |
yihui | 3:4189a10038e6 | 87 | PN532_COMMAND_TGINITASTARGET, |
yihui | 3:4189a10038e6 | 88 | 5, // MODE: PICC only, Passive only |
yihui | 3:4189a10038e6 | 89 | |
yihui | 3:4189a10038e6 | 90 | 0x04, 0x00, // SENS_RES |
yihui | 3:4189a10038e6 | 91 | 0x00, 0x00, 0x00, // NFCID1 |
yihui | 3:4189a10038e6 | 92 | 0x20, // SEL_RES |
yihui | 3:4189a10038e6 | 93 | |
yihui | 3:4189a10038e6 | 94 | 0,0,0,0,0,0,0,0, |
yihui | 3:4189a10038e6 | 95 | 0,0,0,0,0,0,0,0, // FeliCaParams |
yihui | 3:4189a10038e6 | 96 | 0,0, |
yihui | 3:4189a10038e6 | 97 | |
yihui | 3:4189a10038e6 | 98 | 0,0,0,0,0,0,0,0,0,0, // NFCID3t |
yihui | 3:4189a10038e6 | 99 | |
yihui | 3:4189a10038e6 | 100 | 0, // length of general bytes |
yihui | 3:4189a10038e6 | 101 | 0 // length of historical bytes |
yihui | 3:4189a10038e6 | 102 | }; |
yihui | 3:4189a10038e6 | 103 | |
yihui | 3:4189a10038e6 | 104 | if(uidPtr != 0){ // if uid is set copy 3 bytes to nfcid1 |
yihui | 3:4189a10038e6 | 105 | memcpy(command + 4, uidPtr, 3); |
yihui | 3:4189a10038e6 | 106 | } |
yihui | 3:4189a10038e6 | 107 | |
yihui | 3:4189a10038e6 | 108 | if(1 != pn532.tgInitAsTarget(command,sizeof(command), tgInitAsTargetTimeout)){ |
yihui | 3:4189a10038e6 | 109 | DMSG("tgInitAsTarget failed or timed out!"); |
yihui | 3:4189a10038e6 | 110 | return false; |
yihui | 3:4189a10038e6 | 111 | } |
yihui | 3:4189a10038e6 | 112 | |
yihui | 3:4189a10038e6 | 113 | tagWrittenByInitiator = false; |
yihui | 3:4189a10038e6 | 114 | |
yihui | 3:4189a10038e6 | 115 | uint8_t rwbuf[128]; |
yihui | 3:4189a10038e6 | 116 | uint8_t sendlen; |
yihui | 3:4189a10038e6 | 117 | int16_t status; |
yihui | 3:4189a10038e6 | 118 | tag_file currentFile = NONE; |
screamer | 6:26c1b3b6c192 | 119 | //uint16_t cc_size = sizeof(compatibility_container); |
yihui | 3:4189a10038e6 | 120 | bool runLoop = true; |
yihui | 3:4189a10038e6 | 121 | |
yihui | 3:4189a10038e6 | 122 | while(runLoop){ |
yihui | 3:4189a10038e6 | 123 | status = pn532.tgGetData(rwbuf, sizeof(rwbuf)); |
yihui | 3:4189a10038e6 | 124 | if(status < 0){ |
yihui | 3:4189a10038e6 | 125 | DMSG("tgGetData failed!\n"); |
yihui | 3:4189a10038e6 | 126 | pn532.inRelease(); |
yihui | 3:4189a10038e6 | 127 | return true; |
yihui | 3:4189a10038e6 | 128 | } |
yihui | 3:4189a10038e6 | 129 | |
yihui | 3:4189a10038e6 | 130 | uint8_t p1 = rwbuf[C_APDU_P1]; |
yihui | 3:4189a10038e6 | 131 | uint8_t p2 = rwbuf[C_APDU_P2]; |
yihui | 3:4189a10038e6 | 132 | uint8_t lc = rwbuf[C_APDU_LC]; |
yihui | 3:4189a10038e6 | 133 | uint16_t p1p2_length = ((int16_t) p1 << 8) + p2; |
yihui | 3:4189a10038e6 | 134 | |
yihui | 3:4189a10038e6 | 135 | switch(rwbuf[C_APDU_INS]){ |
yihui | 3:4189a10038e6 | 136 | case ISO7816_SELECT_FILE: |
yihui | 3:4189a10038e6 | 137 | switch(p1){ |
yihui | 3:4189a10038e6 | 138 | case C_APDU_P1_SELECT_BY_ID: |
yihui | 3:4189a10038e6 | 139 | if(p2 != 0x0c){ |
yihui | 3:4189a10038e6 | 140 | DMSG("C_APDU_P2 != 0x0c\n"); |
yihui | 3:4189a10038e6 | 141 | setResponse(COMMAND_COMPLETE, rwbuf, &sendlen); |
yihui | 3:4189a10038e6 | 142 | } else if(lc == 2 && rwbuf[C_APDU_DATA] == 0xE1 && (rwbuf[C_APDU_DATA+1] == 0x03 || rwbuf[C_APDU_DATA+1] == 0x04)){ |
yihui | 3:4189a10038e6 | 143 | setResponse(COMMAND_COMPLETE, rwbuf, &sendlen); |
yihui | 3:4189a10038e6 | 144 | if(rwbuf[C_APDU_DATA+1] == 0x03){ |
yihui | 3:4189a10038e6 | 145 | currentFile = CC; |
yihui | 3:4189a10038e6 | 146 | } else if(rwbuf[C_APDU_DATA+1] == 0x04){ |
yihui | 3:4189a10038e6 | 147 | currentFile = NDEF; |
yihui | 3:4189a10038e6 | 148 | } |
yihui | 3:4189a10038e6 | 149 | } else { |
yihui | 3:4189a10038e6 | 150 | setResponse(TAG_NOT_FOUND, rwbuf, &sendlen); |
yihui | 3:4189a10038e6 | 151 | } |
yihui | 3:4189a10038e6 | 152 | break; |
yihui | 3:4189a10038e6 | 153 | case C_APDU_P1_SELECT_BY_NAME: |
yihui | 3:4189a10038e6 | 154 | const uint8_t ndef_tag_application_name_v2[] = {0, 0x7, 0xD2, 0x76, 0x00, 0x00, 0x85, 0x01, 0x01 }; |
yihui | 3:4189a10038e6 | 155 | if(0 == memcmp(ndef_tag_application_name_v2, rwbuf + C_APDU_P2, sizeof(ndef_tag_application_name_v2))){ |
yihui | 3:4189a10038e6 | 156 | setResponse(COMMAND_COMPLETE, rwbuf, &sendlen); |
yihui | 3:4189a10038e6 | 157 | } else{ |
yihui | 3:4189a10038e6 | 158 | DMSG("function not supported\n"); |
yihui | 3:4189a10038e6 | 159 | setResponse(FUNCTION_NOT_SUPPORTED, rwbuf, &sendlen); |
yihui | 3:4189a10038e6 | 160 | } |
yihui | 3:4189a10038e6 | 161 | break; |
yihui | 3:4189a10038e6 | 162 | } |
yihui | 3:4189a10038e6 | 163 | break; |
yihui | 3:4189a10038e6 | 164 | case ISO7816_READ_BINARY: |
yihui | 3:4189a10038e6 | 165 | switch(currentFile){ |
yihui | 3:4189a10038e6 | 166 | case NONE: |
yihui | 3:4189a10038e6 | 167 | setResponse(TAG_NOT_FOUND, rwbuf, &sendlen); |
yihui | 3:4189a10038e6 | 168 | break; |
yihui | 3:4189a10038e6 | 169 | case CC: |
yihui | 3:4189a10038e6 | 170 | if( p1p2_length > NDEF_MAX_LENGTH){ |
yihui | 3:4189a10038e6 | 171 | setResponse(END_OF_FILE_BEFORE_REACHED_LE_BYTES, rwbuf, &sendlen); |
yihui | 3:4189a10038e6 | 172 | }else { |
yihui | 3:4189a10038e6 | 173 | memcpy(rwbuf,compatibility_container + p1p2_length, lc); |
yihui | 3:4189a10038e6 | 174 | setResponse(COMMAND_COMPLETE, rwbuf + lc, &sendlen, lc); |
yihui | 3:4189a10038e6 | 175 | } |
yihui | 3:4189a10038e6 | 176 | break; |
yihui | 3:4189a10038e6 | 177 | case NDEF: |
yihui | 3:4189a10038e6 | 178 | if( p1p2_length > NDEF_MAX_LENGTH){ |
yihui | 3:4189a10038e6 | 179 | setResponse(END_OF_FILE_BEFORE_REACHED_LE_BYTES, rwbuf, &sendlen); |
yihui | 3:4189a10038e6 | 180 | }else { |
yihui | 3:4189a10038e6 | 181 | memcpy(rwbuf, ndef_file + p1p2_length, lc); |
yihui | 3:4189a10038e6 | 182 | setResponse(COMMAND_COMPLETE, rwbuf + lc, &sendlen, lc); |
yihui | 3:4189a10038e6 | 183 | } |
yihui | 3:4189a10038e6 | 184 | break; |
yihui | 3:4189a10038e6 | 185 | } |
yihui | 3:4189a10038e6 | 186 | break; |
yihui | 3:4189a10038e6 | 187 | case ISO7816_UPDATE_BINARY: |
yihui | 3:4189a10038e6 | 188 | if( p1p2_length > NDEF_MAX_LENGTH){ |
yihui | 3:4189a10038e6 | 189 | setResponse(MEMORY_FAILURE, rwbuf, &sendlen); |
yihui | 3:4189a10038e6 | 190 | } |
yihui | 3:4189a10038e6 | 191 | else{ |
yihui | 3:4189a10038e6 | 192 | memcpy(ndef_file + p1p2_length, rwbuf + C_APDU_DATA, lc); |
yihui | 3:4189a10038e6 | 193 | setResponse(COMMAND_COMPLETE, rwbuf, &sendlen); |
yihui | 3:4189a10038e6 | 194 | tagWrittenByInitiator = true; |
yihui | 3:4189a10038e6 | 195 | } |
yihui | 3:4189a10038e6 | 196 | break; |
yihui | 3:4189a10038e6 | 197 | default: |
yihui | 3:4189a10038e6 | 198 | DMSG("Command not supported!"); |
yihui | 3:4189a10038e6 | 199 | DMSG_HEX(rwbuf[C_APDU_INS]); |
yihui | 3:4189a10038e6 | 200 | DMSG("\n"); |
yihui | 3:4189a10038e6 | 201 | setResponse(FUNCTION_NOT_SUPPORTED, rwbuf, &sendlen); |
yihui | 3:4189a10038e6 | 202 | } |
yihui | 3:4189a10038e6 | 203 | status = pn532.tgSetData(rwbuf, sendlen); |
yihui | 3:4189a10038e6 | 204 | if(status < 0){ |
yihui | 3:4189a10038e6 | 205 | DMSG("tgSetData failed\n!"); |
yihui | 3:4189a10038e6 | 206 | pn532.inRelease(); |
yihui | 3:4189a10038e6 | 207 | return true; |
yihui | 3:4189a10038e6 | 208 | } |
yihui | 3:4189a10038e6 | 209 | } |
yihui | 3:4189a10038e6 | 210 | pn532.inRelease(); |
yihui | 3:4189a10038e6 | 211 | return true; |
yihui | 3:4189a10038e6 | 212 | } |
yihui | 3:4189a10038e6 | 213 | |
yihui | 3:4189a10038e6 | 214 | void EmulateTag::setResponse(responseCommand cmd, uint8_t* buf, uint8_t* sendlen, uint8_t sendlenOffset){ |
yihui | 3:4189a10038e6 | 215 | switch(cmd){ |
yihui | 3:4189a10038e6 | 216 | case COMMAND_COMPLETE: |
yihui | 3:4189a10038e6 | 217 | buf[0] = R_APDU_SW1_COMMAND_COMPLETE; |
yihui | 3:4189a10038e6 | 218 | buf[1] = R_APDU_SW2_COMMAND_COMPLETE; |
yihui | 3:4189a10038e6 | 219 | *sendlen = 2 + sendlenOffset; |
yihui | 3:4189a10038e6 | 220 | break; |
yihui | 3:4189a10038e6 | 221 | case TAG_NOT_FOUND: |
yihui | 3:4189a10038e6 | 222 | buf[0] = R_APDU_SW1_NDEF_TAG_NOT_FOUND; |
yihui | 3:4189a10038e6 | 223 | buf[1] = R_APDU_SW2_NDEF_TAG_NOT_FOUND; |
yihui | 3:4189a10038e6 | 224 | *sendlen = 2; |
yihui | 3:4189a10038e6 | 225 | break; |
yihui | 3:4189a10038e6 | 226 | case FUNCTION_NOT_SUPPORTED: |
yihui | 3:4189a10038e6 | 227 | buf[0] = R_APDU_SW1_FUNCTION_NOT_SUPPORTED; |
yihui | 3:4189a10038e6 | 228 | buf[1] = R_APDU_SW2_FUNCTION_NOT_SUPPORTED; |
yihui | 3:4189a10038e6 | 229 | *sendlen = 2; |
yihui | 3:4189a10038e6 | 230 | break; |
yihui | 3:4189a10038e6 | 231 | case MEMORY_FAILURE: |
yihui | 3:4189a10038e6 | 232 | buf[0] = R_APDU_SW1_MEMORY_FAILURE; |
yihui | 3:4189a10038e6 | 233 | buf[1] = R_APDU_SW2_MEMORY_FAILURE; |
yihui | 3:4189a10038e6 | 234 | *sendlen = 2; |
yihui | 3:4189a10038e6 | 235 | break; |
yihui | 3:4189a10038e6 | 236 | case END_OF_FILE_BEFORE_REACHED_LE_BYTES: |
yihui | 3:4189a10038e6 | 237 | buf[0] = R_APDU_SW1_END_OF_FILE_BEFORE_REACHED_LE_BYTES; |
yihui | 3:4189a10038e6 | 238 | buf[1] = R_APDU_SW2_END_OF_FILE_BEFORE_REACHED_LE_BYTES; |
yihui | 3:4189a10038e6 | 239 | *sendlen= 2; |
yihui | 3:4189a10038e6 | 240 | break; |
yihui | 3:4189a10038e6 | 241 | } |
yihui | 3:4189a10038e6 | 242 | } |