-
Notifications
You must be signed in to change notification settings - Fork 1
/
PN532.cpp
1316 lines (1100 loc) · 42.2 KB
/
PN532.cpp
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
/**************************************************************************/
/*!
@file PN532.cpp
@author Adafruit Industries & Seeed Studio
@license BSD
*/
/**************************************************************************/
#include "Arduino.h"
#include "PN532.h"
#include "PN532_debug.h"
#include <string.h>
#define HAL(func) (_interface->func)
PN532::PN532(PN532Interface &interface)
{
_interface = &interface;
}
/**************************************************************************/
/*!
@brief Setups the HW
*/
/**************************************************************************/
void PN532::begin()
{
HAL(begin)();
HAL(wakeup)();
}
/**************************************************************************/
/*!
@brief Prints a hexadecimal value in plain characters
@param data Pointer to the uint8_t data
@param numBytes Data length in bytes
*/
/**************************************************************************/
void PN532::PrintHex(const uint8_t *data, const uint32_t numBytes)
{
#ifdef ARDUINO
for (uint8_t i = 0; i < numBytes; i++) {
if (data[i] < 0x10) {
Serial.print(" 0");
} else {
Serial.print(' ');
}
Serial.print(data[i], HEX);
}
Serial.println("");
#else
for (uint8_t i = 0; i < numBytes; i++) {
printf(" %2X", data[i]);
}
printf("\n");
#endif
}
/**************************************************************************/
/*!
@brief Prints a hexadecimal value in plain characters, along with
the char equivalents in the following format
00 00 00 00 00 00 ......
@param data Pointer to the data
@param numBytes Data length in bytes
*/
/**************************************************************************/
void PN532::PrintHexChar(const uint8_t *data, const uint32_t numBytes)
{
#ifdef ARDUINO
for (uint8_t i = 0; i < numBytes; i++) {
if (data[i] < 0x10) {
Serial.print(" 0");
} else {
Serial.print(' ');
}
Serial.print(data[i], HEX);
}
Serial.print(" ");
for (uint8_t i = 0; i < numBytes; i++) {
char c = data[i];
if (c <= 0x1f || c > 0x7f) {
Serial.print('.');
} else {
Serial.print(c);
}
}
Serial.println("");
#else
for (uint8_t i = 0; i < numBytes; i++) {
printf(" %2X", data[i]);
}
printf(" ");
for (uint8_t i = 0; i < numBytes; i++) {
char c = data[i];
if (c <= 0x1f || c > 0x7f) {
printf(".");
} else {
printf("%c", c);
}
printf("\n");
}
#endif
}
/**************************************************************************/
/*!
@brief Checks the firmware version of the PN5xx chip
@returns The chip's firmware version and ID
*/
/**************************************************************************/
uint32_t PN532::getFirmwareVersion(void)
{
uint32_t response;
pn532_packetbuffer[0] = PN532_COMMAND_GETFIRMWAREVERSION;
if (HAL(writeCommand)(pn532_packetbuffer, 1)) {
return 0;
}
// read data packet
int16_t status = HAL(readResponse)(pn532_packetbuffer, sizeof(pn532_packetbuffer));
if (0 > status) {
return 0;
}
response = pn532_packetbuffer[0];
response <<= 8;
response |= pn532_packetbuffer[1];
response <<= 8;
response |= pn532_packetbuffer[2];
response <<= 8;
response |= pn532_packetbuffer[3];
return response;
}
/**************************************************************************/
/*!
Writes an 8-bit value that sets the state of the PN532's GPIO pins
@warning This function is provided exclusively for board testing and
is dangerous since it will throw an error if any pin other
than the ones marked "Can be used as GPIO" are modified! All
pins that can not be used as GPIO should ALWAYS be left high
(value = 1) or the system will become unstable and a HW reset
will be required to recover the PN532.
pinState[0] = P30 Can be used as GPIO
pinState[1] = P31 Can be used as GPIO
pinState[2] = P32 *** RESERVED (Must be 1!) ***
pinState[3] = P33 Can be used as GPIO
pinState[4] = P34 *** RESERVED (Must be 1!) ***
pinState[5] = P35 Can be used as GPIO
@returns 1 if everything executed properly, 0 for an error
*/
/**************************************************************************/
bool PN532::writeGPIO(uint8_t pinstate)
{
// Make sure pinstate does not try to toggle P32 or P34
pinstate |= (1 << PN532_GPIO_P32) | (1 << PN532_GPIO_P34);
// Fill command buffer
pn532_packetbuffer[0] = PN532_COMMAND_WRITEGPIO;
pn532_packetbuffer[1] = PN532_GPIO_VALIDATIONBIT | pinstate; // P3 Pins
pn532_packetbuffer[2] = 0x00; // P7 GPIO Pins (not used ... taken by I2C)
DMSG("Writing P3 GPIO: ");
DMSG_HEX(pn532_packetbuffer[1]);
DMSG("\n");
// Send the WRITEGPIO command (0x0E)
if (HAL(writeCommand)(pn532_packetbuffer, 3))
return 0;
return (0 < HAL(readResponse)(pn532_packetbuffer, sizeof(pn532_packetbuffer)));
}
/**************************************************************************/
/*!
Reads the state of the PN532's GPIO pins
@returns An 8-bit value containing the pin state where:
pinState[0] = P30
pinState[1] = P31
pinState[2] = P32
pinState[3] = P33
pinState[4] = P34
pinState[5] = P35
*/
/**************************************************************************/
uint8_t PN532::readGPIO(void)
{
pn532_packetbuffer[0] = PN532_COMMAND_READGPIO;
// Send the READGPIO command (0x0C)
if (HAL(writeCommand)(pn532_packetbuffer, 1))
return 0x0;
HAL(readResponse)(pn532_packetbuffer, sizeof(pn532_packetbuffer));
/* READGPIO response without prefix and suffix should be in the following format:
byte Description
------------- ------------------------------------------
b0 P3 GPIO Pins
b1 P7 GPIO Pins (not used ... taken by I2C)
b2 Interface Mode Pins (not used ... bus select pins)
*/
DMSG("P3 GPIO: "); DMSG_HEX(pn532_packetbuffer[7]);
DMSG("P7 GPIO: "); DMSG_HEX(pn532_packetbuffer[8]);
DMSG("I0I1 GPIO: "); DMSG_HEX(pn532_packetbuffer[9]);
DMSG("\n");
return pn532_packetbuffer[0];
}
/**************************************************************************/
/*!
@brief Configures the SAM (Secure Access Module)
*/
/**************************************************************************/
bool PN532::SAMConfig(void)
{
pn532_packetbuffer[0] = PN532_COMMAND_SAMCONFIGURATION;
pn532_packetbuffer[1] = 0x01; // normal mode;
pn532_packetbuffer[2] = 0x14; // timeout 50ms * 20 = 1 second
pn532_packetbuffer[3] = 0x01; // use IRQ pin!
DMSG("SAMConfig\n");
if (HAL(writeCommand)(pn532_packetbuffer, 4))
return false;
return (0 < HAL(readResponse)(pn532_packetbuffer, sizeof(pn532_packetbuffer)));
}
/**************************************************************************/
/*!
Sets the MxRtyPassiveActivation uint8_t of the RFConfiguration register
@param maxRetries 0xFF to wait forever, 0x00..0xFE to timeout
after mxRetries
@returns 1 if everything executed properly, 0 for an error
*/
/**************************************************************************/
bool PN532::setPassiveActivationRetries(uint8_t maxRetries)
{
pn532_packetbuffer[0] = PN532_COMMAND_RFCONFIGURATION;
pn532_packetbuffer[1] = 5; // Config item 5 (MaxRetries)
pn532_packetbuffer[2] = 0xFF; // MxRtyATR (default = 0xFF)
pn532_packetbuffer[3] = 0x01; // MxRtyPSL (default = 0x01)
pn532_packetbuffer[4] = maxRetries;
if (HAL(writeCommand)(pn532_packetbuffer, 5))
return 0x0; // no ACK
return (0 < HAL(readResponse)(pn532_packetbuffer, sizeof(pn532_packetbuffer)));
}
/***** ISO14443A Commands ******/
/**************************************************************************/
/*!
Waits for an ISO14443A target to enter the field
@param cardBaudRate Baud rate of the card
@param uid Pointer to the array that will be populated
with the card's UID (up to 7 bytes)
@param uidLength Pointer to the variable that will hold the
length of the card's UID.
@returns 1 if everything executed properly, 0 for an error
*/
/**************************************************************************/
bool PN532::readPassiveTargetID(uint8_t cardbaudrate, uint8_t *uid, uint8_t *uidLength, uint16_t timeout)
{
pn532_packetbuffer[0] = PN532_COMMAND_INLISTPASSIVETARGET;
pn532_packetbuffer[1] = 1; // max 1 cards at once (we can set this to 2 later)
pn532_packetbuffer[2] = cardbaudrate;
if (HAL(writeCommand)(pn532_packetbuffer, 3)) {
return 0x0; // command failed
}
// read data packet
if (HAL(readResponse)(pn532_packetbuffer, sizeof(pn532_packetbuffer), timeout) < 0) {
return 0x0;
}
// check some basic stuff
/* ISO14443A card response should be in the following format:
byte Description
------------- ------------------------------------------
b0 Tags Found
b1 Tag Number (only one used in this example)
b2..3 SENS_RES
b4 SEL_RES
b5 NFCID Length
b6..NFCIDLen NFCID
*/
if (pn532_packetbuffer[0] != 1)
return 0;
uint16_t sens_res = pn532_packetbuffer[2];
sens_res <<= 8;
sens_res |= pn532_packetbuffer[3];
DMSG("ATQA: 0x"); DMSG_HEX(sens_res);
DMSG("SAK: 0x"); DMSG_HEX(pn532_packetbuffer[4]);
DMSG("\n");
/* Card appears to be Mifare Classic */
*uidLength = pn532_packetbuffer[5];
for (uint8_t i = 0; i < pn532_packetbuffer[5]; i++) {
uid[i] = pn532_packetbuffer[6 + i];
}
return 1;
}
/***** Mifare Classic Functions ******/
/**************************************************************************/
/*!
Indicates whether the specified block number is the first block
in the sector (block 0 relative to the current sector)
*/
/**************************************************************************/
bool PN532::mifareclassic_IsFirstBlock (uint32_t uiBlock)
{
// Test if we are in the small or big sectors
if (uiBlock < 128)
return ((uiBlock) % 4 == 0);
else
return ((uiBlock) % 16 == 0);
}
/**************************************************************************/
/*!
Indicates whether the specified block number is the sector trailer
*/
/**************************************************************************/
bool PN532::mifareclassic_IsTrailerBlock (uint32_t uiBlock)
{
// Test if we are in the small or big sectors
if (uiBlock < 128)
return ((uiBlock + 1) % 4 == 0);
else
return ((uiBlock + 1) % 16 == 0);
}
/**************************************************************************/
/*!
Tries to authenticate a block of memory on a MIFARE card using the
INDATAEXCHANGE command. See section 7.3.8 of the PN532 User Manual
for more information on sending MIFARE and other commands.
@param uid Pointer to a byte array containing the card UID
@param uidLen The length (in bytes) of the card's UID (Should
be 4 for MIFARE Classic)
@param blockNumber The block number to authenticate. (0..63 for
1KB cards, and 0..255 for 4KB cards).
@param keyNumber Which key type to use during authentication
(0 = MIFARE_CMD_AUTH_A, 1 = MIFARE_CMD_AUTH_B)
@param keyData Pointer to a byte array containing the 6 bytes
key value
@returns 1 if everything executed properly, 0 for an error
*/
/**************************************************************************/
uint8_t PN532::mifareclassic_AuthenticateBlock (uint8_t *uid, uint8_t uidLen, uint32_t blockNumber, uint8_t keyNumber, uint8_t *keyData)
{
uint8_t i;
// Hang on to the key and uid data
memcpy (_key, keyData, 6);
memcpy (_uid, uid, uidLen);
_uidLen = uidLen;
// Prepare the authentication command //
pn532_packetbuffer[0] = PN532_COMMAND_INDATAEXCHANGE; /* Data Exchange Header */
pn532_packetbuffer[1] = 1; /* Max card numbers */
pn532_packetbuffer[2] = (keyNumber) ? MIFARE_CMD_AUTH_B : MIFARE_CMD_AUTH_A;
pn532_packetbuffer[3] = blockNumber; /* Block Number (1K = 0..63, 4K = 0..255 */
memcpy (pn532_packetbuffer + 4, _key, 6);
for (i = 0; i < _uidLen; i++) {
pn532_packetbuffer[10 + i] = _uid[i]; /* 4 bytes card ID */
}
if (HAL(writeCommand)(pn532_packetbuffer, 10 + _uidLen))
return 0;
// Read the response packet
HAL(readResponse)(pn532_packetbuffer, sizeof(pn532_packetbuffer));
// Check if the response is valid and we are authenticated???
// for an auth success it should be bytes 5-7: 0xD5 0x41 0x00
// Mifare auth error is technically byte 7: 0x14 but anything other and 0x00 is not good
if (pn532_packetbuffer[0] != 0x00) {
DMSG("Authentification failed\n");
return 0;
}
return 1;
}
/**************************************************************************/
/*!
Tries to read an entire 16-bytes data block at the specified block
address.
@param blockNumber The block number to authenticate. (0..63 for
1KB cards, and 0..255 for 4KB cards).
@param data Pointer to the byte array that will hold the
retrieved data (if any)
@returns 1 if everything executed properly, 0 for an error
*/
/**************************************************************************/
uint8_t PN532::mifareclassic_ReadDataBlock (uint8_t blockNumber, uint8_t *data)
{
DMSG("Trying to read 16 bytes from block ");
DMSG_INT(blockNumber);
/* Prepare the command */
pn532_packetbuffer[0] = PN532_COMMAND_INDATAEXCHANGE;
pn532_packetbuffer[1] = 1; /* Card number */
pn532_packetbuffer[2] = MIFARE_CMD_READ; /* Mifare Read command = 0x30 */
pn532_packetbuffer[3] = blockNumber; /* Block Number (0..63 for 1K, 0..255 for 4K) */
/* Send the command */
if (HAL(writeCommand)(pn532_packetbuffer, 4)) {
return 0;
}
/* Read the response packet */
HAL(readResponse)(pn532_packetbuffer, sizeof(pn532_packetbuffer));
/* If byte 8 isn't 0x00 we probably have an error */
if (pn532_packetbuffer[0] != 0x00) {
return 0;
}
/* Copy the 16 data bytes to the output buffer */
/* Block content starts at byte 9 of a valid response */
memcpy (data, pn532_packetbuffer + 1, 16);
return 1;
}
/**************************************************************************/
/*!
Tries to write an entire 16-bytes data block at the specified block
address.
@param blockNumber The block number to authenticate. (0..63 for
1KB cards, and 0..255 for 4KB cards).
@param data The byte array that contains the data to write.
@returns 1 if everything executed properly, 0 for an error
*/
/**************************************************************************/
uint8_t PN532::mifareclassic_WriteDataBlock (uint8_t blockNumber, uint8_t *data)
{
/* Prepare the first command */
pn532_packetbuffer[0] = PN532_COMMAND_INDATAEXCHANGE;
pn532_packetbuffer[1] = 1; /* Card number */
pn532_packetbuffer[2] = MIFARE_CMD_WRITE; /* Mifare Write command = 0xA0 */
pn532_packetbuffer[3] = blockNumber; /* Block Number (0..63 for 1K, 0..255 for 4K) */
memcpy (pn532_packetbuffer + 4, data, 16); /* Data Payload */
/* Send the command */
if (HAL(writeCommand)(pn532_packetbuffer, 20)) {
return 0;
}
/* Read the response packet */
return (0 < HAL(readResponse)(pn532_packetbuffer, sizeof(pn532_packetbuffer)));
}
/**************************************************************************/
/*!
Formats a Mifare Classic card to store NDEF Records
@returns 1 if everything executed properly, 0 for an error
*/
/**************************************************************************/
uint8_t PN532::mifareclassic_FormatNDEF (void)
{
uint8_t sectorbuffer1[16] = {0x14, 0x01, 0x03, 0xE1, 0x03, 0xE1, 0x03, 0xE1, 0x03, 0xE1, 0x03, 0xE1, 0x03, 0xE1, 0x03, 0xE1};
uint8_t sectorbuffer2[16] = {0x03, 0xE1, 0x03, 0xE1, 0x03, 0xE1, 0x03, 0xE1, 0x03, 0xE1, 0x03, 0xE1, 0x03, 0xE1, 0x03, 0xE1};
uint8_t sectorbuffer3[16] = {0xA0, 0xA1, 0xA2, 0xA3, 0xA4, 0xA5, 0x78, 0x77, 0x88, 0xC1, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF};
// Note 0xA0 0xA1 0xA2 0xA3 0xA4 0xA5 must be used for key A
// for the MAD sector in NDEF records (sector 0)
// Write block 1 and 2 to the card
if (!(mifareclassic_WriteDataBlock (1, sectorbuffer1)))
return 0;
if (!(mifareclassic_WriteDataBlock (2, sectorbuffer2)))
return 0;
// Write key A and access rights card
if (!(mifareclassic_WriteDataBlock (3, sectorbuffer3)))
return 0;
// Seems that everything was OK (?!)
return 1;
}
/**************************************************************************/
/*!
Writes an NDEF URI Record to the specified sector (1..15)
Note that this function assumes that the Mifare Classic card is
already formatted to work as an "NFC Forum Tag" and uses a MAD1
file system. You can use the NXP TagWriter app on Android to
properly format cards for this.
@param sectorNumber The sector that the URI record should be written
to (can be 1..15 for a 1K card)
@param uriIdentifier The uri identifier code (0 = none, 0x01 =
"http://www.", etc.)
@param url The uri text to write (max 38 characters).
@returns 1 if everything executed properly, 0 for an error
*/
/**************************************************************************/
uint8_t PN532::mifareclassic_WriteNDEFURI (uint8_t sectorNumber, uint8_t uriIdentifier, const char *url)
{
// Figure out how long the string is
uint8_t len = strlen(url);
// Make sure we're within a 1K limit for the sector number
if ((sectorNumber < 1) || (sectorNumber > 15))
return 0;
// Make sure the URI payload is between 1 and 38 chars
if ((len < 1) || (len > 38))
return 0;
// Note 0xD3 0xF7 0xD3 0xF7 0xD3 0xF7 must be used for key A
// in NDEF records
// Setup the sector buffer (w/pre-formatted TLV wrapper and NDEF message)
uint8_t sectorbuffer1[16] = {0x00, 0x00, 0x03, len + 5, 0xD1, 0x01, len + 1, 0x55, uriIdentifier, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00};
uint8_t sectorbuffer2[16] = {0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00};
uint8_t sectorbuffer3[16] = {0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00};
uint8_t sectorbuffer4[16] = {0xD3, 0xF7, 0xD3, 0xF7, 0xD3, 0xF7, 0x7F, 0x07, 0x88, 0x40, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF};
if (len <= 6) {
// Unlikely we'll get a url this short, but why not ...
memcpy (sectorbuffer1 + 9, url, len);
sectorbuffer1[len + 9] = 0xFE;
} else if (len == 7) {
// 0xFE needs to be wrapped around to next block
memcpy (sectorbuffer1 + 9, url, len);
sectorbuffer2[0] = 0xFE;
} else if ((len > 7) || (len <= 22)) {
// Url fits in two blocks
memcpy (sectorbuffer1 + 9, url, 7);
memcpy (sectorbuffer2, url + 7, len - 7);
sectorbuffer2[len - 7] = 0xFE;
} else if (len == 23) {
// 0xFE needs to be wrapped around to final block
memcpy (sectorbuffer1 + 9, url, 7);
memcpy (sectorbuffer2, url + 7, len - 7);
sectorbuffer3[0] = 0xFE;
} else {
// Url fits in three blocks
memcpy (sectorbuffer1 + 9, url, 7);
memcpy (sectorbuffer2, url + 7, 16);
memcpy (sectorbuffer3, url + 23, len - 24);
sectorbuffer3[len - 22] = 0xFE;
}
// Now write all three blocks back to the card
if (!(mifareclassic_WriteDataBlock (sectorNumber * 4, sectorbuffer1)))
return 0;
if (!(mifareclassic_WriteDataBlock ((sectorNumber * 4) + 1, sectorbuffer2)))
return 0;
if (!(mifareclassic_WriteDataBlock ((sectorNumber * 4) + 2, sectorbuffer3)))
return 0;
if (!(mifareclassic_WriteDataBlock ((sectorNumber * 4) + 3, sectorbuffer4)))
return 0;
// Seems that everything was OK (?!)
return 1;
}
/***** Mifare Ultralight Functions ******/
/**************************************************************************/
/*!
Tries to read an entire 4-bytes page at the specified address.
@param page The page number (0..63 in most cases)
@param buffer Pointer to the byte array that will hold the
retrieved data (if any)
*/
/**************************************************************************/
uint8_t PN532::mifareultralight_ReadPage (uint8_t page, uint8_t *buffer)
{
if (page >= 64) {
DMSG("Page value out of range\n");
return 0;
}
/* Prepare the command */
pn532_packetbuffer[0] = PN532_COMMAND_INDATAEXCHANGE;
pn532_packetbuffer[1] = 1; /* Card number */
pn532_packetbuffer[2] = MIFARE_CMD_READ; /* Mifare Read command = 0x30 */
pn532_packetbuffer[3] = page; /* Page Number (0..63 in most cases) */
/* Send the command */
if (HAL(writeCommand)(pn532_packetbuffer, 4)) {
return 0;
}
/* Read the response packet */
HAL(readResponse)(pn532_packetbuffer, sizeof(pn532_packetbuffer));
/* If byte 8 isn't 0x00 we probably have an error */
if (pn532_packetbuffer[0] == 0x00) {
/* Copy the 4 data bytes to the output buffer */
/* Block content starts at byte 9 of a valid response */
/* Note that the command actually reads 16 bytes or 4 */
/* pages at a time ... we simply discard the last 12 */
/* bytes */
memcpy (buffer, pn532_packetbuffer + 1, 4);
} else {
return 0;
}
// Return OK signal
return 1;
}
/**************************************************************************/
/*!
Tries to write an entire 4-bytes data buffer at the specified page
address.
@param page The page number to write into. (0..63).
@param buffer The byte array that contains the data to write.
@returns 1 if everything executed properly, 0 for an error
*/
/**************************************************************************/
uint8_t PN532::mifareultralight_WritePage (uint8_t page, uint8_t *buffer)
{
/* Prepare the first command */
pn532_packetbuffer[0] = PN532_COMMAND_INDATAEXCHANGE;
pn532_packetbuffer[1] = 1; /* Card number */
pn532_packetbuffer[2] = MIFARE_CMD_WRITE_ULTRALIGHT; /* Mifare UL Write cmd = 0xA2 */
pn532_packetbuffer[3] = page; /* page Number (0..63) */
memcpy (pn532_packetbuffer + 4, buffer, 4); /* Data Payload */
/* Send the command */
if (HAL(writeCommand)(pn532_packetbuffer, 8)) {
return 0;
}
/* Read the response packet */
return (0 < HAL(readResponse)(pn532_packetbuffer, sizeof(pn532_packetbuffer)));
}
/**************************************************************************/
/*!
@brief Exchanges an APDU with the currently inlisted peer
@param send Pointer to data to send
@param sendLength Length of the data to send
@param response Pointer to response data
@param responseLength Pointer to the response data length
*/
/**************************************************************************/
bool PN532::inDataExchange(uint8_t *send, uint8_t sendLength, uint8_t *response, uint8_t *responseLength)
{
uint8_t i;
pn532_packetbuffer[0] = 0x40; // PN532_COMMAND_INDATAEXCHANGE;
pn532_packetbuffer[1] = inListedTag;
if (HAL(writeCommand)(pn532_packetbuffer, 2, send, sendLength)) {
return false;
}
int16_t status = HAL(readResponse)(response, *responseLength, 1000);
if (status < 0) {
return false;
}
if ((response[0] & 0x3f) != 0) {
DMSG("Status code indicates an error\n");
return false;
}
uint8_t length = status;
length -= 1;
if (length > *responseLength) {
length = *responseLength; // silent truncation...
}
for (uint8_t i = 0; i < length; i++) {
response[i] = response[i + 1];
}
*responseLength = length;
return true;
}
/**************************************************************************/
/*!
@brief 'InLists' a passive target. PN532 acting as reader/initiator,
peer acting as card/responder.
*/
/**************************************************************************/
bool PN532::inListPassiveTarget()
{
pn532_packetbuffer[0] = PN532_COMMAND_INLISTPASSIVETARGET;
pn532_packetbuffer[1] = 1;
pn532_packetbuffer[2] = 0;
DMSG("inList passive target\n");
if (HAL(writeCommand)(pn532_packetbuffer, 3)) {
return false;
}
int16_t status = HAL(readResponse)(pn532_packetbuffer, sizeof(pn532_packetbuffer), 30000);
if (status < 0) {
return false;
}
if (pn532_packetbuffer[0] != 1) {
return false;
}
inListedTag = pn532_packetbuffer[1];
return true;
}
int8_t PN532::tgInitAsTarget(const uint8_t* command, const uint8_t len, const uint16_t timeout){
int8_t status = HAL(writeCommand)(command, len);
if (status < 0) {
return -1;
}
status = HAL(readResponse)(pn532_packetbuffer, sizeof(pn532_packetbuffer), timeout);
if (status > 0) {
return 1;
} else if (PN532_TIMEOUT == status) {
return 0;
} else {
return -2;
}
}
/**
* Peer to Peer
*/
int8_t PN532::tgInitAsTarget(uint16_t timeout)
{
const uint8_t command[] = {
PN532_COMMAND_TGINITASTARGET,
0,
0x00, 0x00, //SENS_RES
0x00, 0x00, 0x00, //NFCID1
0x40, //SEL_RES
0x01, 0xFE, 0x0F, 0xBB, 0xBA, 0xA6, 0xC9, 0x89, // POL_RES
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0xFF, 0xFF,
0x01, 0xFE, 0x0F, 0xBB, 0xBA, 0xA6, 0xC9, 0x89, 0x00, 0x00, //NFCID3t: Change this to desired value
0x06, 0x46, 0x66, 0x6D, 0x01, 0x01, 0x10, 0x00// LLCP magic number and version parameter
};
return tgInitAsTarget(command, sizeof(command), timeout);
}
int16_t PN532::tgGetData(uint8_t *buf, uint8_t len)
{
buf[0] = PN532_COMMAND_TGGETDATA;
if (HAL(writeCommand)(buf, 1)) {
return -1;
}
int16_t status = HAL(readResponse)(buf, len, 3000);
if (0 >= status) {
return status;
}
uint16_t length = status - 1;
if (buf[0] != 0) {
DMSG("status is not ok\n");
return -5;
}
for (uint8_t i = 0; i < length; i++) {
buf[i] = buf[i + 1];
}
return length;
}
bool PN532::tgSetData(const uint8_t *header, uint8_t hlen, const uint8_t *body, uint8_t blen)
{
if (hlen > (sizeof(pn532_packetbuffer) - 1)) {
if ((body != 0) || (header == pn532_packetbuffer)) {
DMSG("tgSetData:buffer too small\n");
return false;
}
pn532_packetbuffer[0] = PN532_COMMAND_TGSETDATA;
if (HAL(writeCommand)(pn532_packetbuffer, 1, header, hlen)) {
return false;
}
} else {
for (int8_t i = hlen - 1; i >= 0; i--){
pn532_packetbuffer[i + 1] = header[i];
}
pn532_packetbuffer[0] = PN532_COMMAND_TGSETDATA;
if (HAL(writeCommand)(pn532_packetbuffer, hlen + 1, body, blen)) {
return false;
}
}
if (0 > HAL(readResponse)(pn532_packetbuffer, sizeof(pn532_packetbuffer), 3000)) {
return false;
}
if (0 != pn532_packetbuffer[0]) {
return false;
}
return true;
}
int16_t PN532::inRelease(const uint8_t relevantTarget){
pn532_packetbuffer[0] = PN532_COMMAND_INRELEASE;
pn532_packetbuffer[1] = relevantTarget;
if (HAL(writeCommand)(pn532_packetbuffer, 2)) {
return 0;
}
// read data packet
return HAL(readResponse)(pn532_packetbuffer, sizeof(pn532_packetbuffer));
}
/***** FeliCa Functions ******/
/**************************************************************************/
/*!
@brief Poll FeliCa card. PN532 acting as reader/initiator,
peer acting as card/responder.
@param[in] systemCode Designation of System Code. When sending FFFFh as System Code,
all FeliCa cards can return response.
@param[in] requestCode Designation of Request Data as follows:
00h: No Request
01h: System Code request (to acquire System Code of the card)
02h: Communication perfomance request
@param[out] idm IDm of the card (8 bytes)
@param[out] pmm PMm of the card (8 bytes)
@param[out] systemCodeResponse System Code of the card (Optional, 2bytes)
@return = 1: A FeliCa card has detected
= 0: No card has detected
< 0: error
*/
/**************************************************************************/
int8_t PN532::felica_Polling(uint16_t systemCode, uint8_t requestCode, uint8_t * idm, uint8_t * pmm, uint16_t *systemCodeResponse, uint16_t timeout)
{
pn532_packetbuffer[0] = PN532_COMMAND_INLISTPASSIVETARGET;
pn532_packetbuffer[1] = 1;
pn532_packetbuffer[2] = 1;
pn532_packetbuffer[3] = FELICA_CMD_POLLING;
pn532_packetbuffer[4] = (systemCode >> 8) & 0xFF;
pn532_packetbuffer[5] = systemCode & 0xFF;
pn532_packetbuffer[6] = requestCode;
pn532_packetbuffer[7] = 0;
if (HAL(writeCommand)(pn532_packetbuffer, 8)) {
DMSG("Could not send Polling command\n");
return -1;
}
int16_t status = HAL(readResponse)(pn532_packetbuffer, 22, timeout);
if (status < 0) {
DMSG("Could not receive response\n");
return -2;
}
// Check NbTg (pn532_packetbuffer[7])
if (pn532_packetbuffer[0] == 0) {
DMSG("No card had detected\n");
return 0;
} else if (pn532_packetbuffer[0] != 1) {
DMSG("Unhandled number of targets inlisted. NbTg: ");
DMSG_HEX(pn532_packetbuffer[7]);
DMSG("\n");
return -3;
}
inListedTag = pn532_packetbuffer[1];
DMSG("Tag number: ");
DMSG_HEX(pn532_packetbuffer[1]);
DMSG("\n");
// length check
uint8_t responseLength = pn532_packetbuffer[2];
if (responseLength != 18 && responseLength != 20) {
DMSG("Wrong response length\n");
return -4;
}
uint8_t i;
for (i=0; i<8; ++i) {
idm[i] = pn532_packetbuffer[4+i];
_felicaIDm[i] = pn532_packetbuffer[4+i];
pmm[i] = pn532_packetbuffer[12+i];
_felicaPMm[i] = pn532_packetbuffer[12+i];
}
if ( responseLength == 20 ) {
*systemCodeResponse = (uint16_t)((pn532_packetbuffer[20] << 8) + pn532_packetbuffer[21]);
}
return 1;
}
/**************************************************************************/
/*!
@brief Sends FeliCa command to the currently inlisted peer
@param[in] command FeliCa command packet. (e.g. 00 FF FF 00 00 for Polling command)
@param[in] commandlength Length of the FeliCa command packet. (e.g. 0x05 for above Polling command )
@param[out] response FeliCa response packet. (e.g. 01 NFCID2(8 bytes) PAD(8 bytes) for Polling response)
@param[out] responselength Length of the FeliCa response packet. (e.g. 0x11 for above Polling command )
@return = 1: Success
< 0: error
*/
/**************************************************************************/
int8_t PN532::felica_SendCommand (const uint8_t *command, uint8_t commandlength, uint8_t *response, uint8_t *responseLength)
{
if (commandlength > 0xFE) {
DMSG("Command length too long\n");
return -1;
}
pn532_packetbuffer[0] = 0x40; // PN532_COMMAND_INDATAEXCHANGE;
pn532_packetbuffer[1] = inListedTag;
pn532_packetbuffer[2] = commandlength + 1;
if (HAL(writeCommand)(pn532_packetbuffer, 3, command, commandlength)) {
DMSG("Could not send FeliCa command\n");
return -2;
}
// Wait card response
int16_t status = HAL(readResponse)(pn532_packetbuffer, sizeof(pn532_packetbuffer), 200);
if (status < 0) {
DMSG("Could not receive response\n");
return -3;
}
// Check status (pn532_packetbuffer[0])
if ((pn532_packetbuffer[0] & 0x3F)!=0) {
DMSG("Status code indicates an error: ");
DMSG_HEX(pn532_packetbuffer[0]);
DMSG("\n");
return -4;
}
// length check
*responseLength = pn532_packetbuffer[1] - 1;
if ( (status - 2) != *responseLength) {