]>
Commit | Line | Data |
---|---|---|
15c4dc5a | 1 | //----------------------------------------------------------------------------- |
2 | // Routines to support ISO 15693. This includes both the reader software and | |
3 | // the `fake tag' modes, but at the moment I've implemented only the reader | |
4 | // stuff, and that barely. | |
5 | // Jonathan Westhues, split Nov 2006 | |
6 | ||
7 | // Modified by Greg Jones, Jan 2009 to perform modulation onboard in arm rather than on PC | |
8 | // Also added additional reader commands (SELECT, READ etc.) | |
9 | ||
10 | //----------------------------------------------------------------------------- | |
e30c654b | 11 | #include "proxmark3.h" |
f7e3ed82 | 12 | #include "util.h" |
15c4dc5a | 13 | #include "apps.h" |
14 | ||
15 | // FROM winsrc\prox.h ////////////////////////////////// | |
16 | #define arraylen(x) (sizeof(x)/sizeof((x)[0])) | |
17 | ||
18 | //----------------------------------------------------------------------------- | |
19 | // Map a sequence of octets (~layer 2 command) into the set of bits to feed | |
20 | // to the FPGA, to transmit that command to the tag. | |
21 | //----------------------------------------------------------------------------- | |
22 | ||
23 | // The sampling rate is 106.353 ksps/s, for T = 18.8 us | |
24 | ||
25 | // SOF defined as | |
26 | // 1) Unmodulated time of 56.64us | |
27 | // 2) 24 pulses of 423.75khz | |
28 | // 3) logic '1' (unmodulated for 18.88us followed by 8 pulses of 423.75khz) | |
29 | ||
30 | static const int FrameSOF[] = { | |
31 | -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, | |
32 | -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, | |
33 | 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, | |
34 | 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, | |
35 | -1, -1, -1, -1, | |
36 | -1, -1, -1, -1, | |
37 | 1, 1, 1, 1, | |
38 | 1, 1, 1, 1 | |
39 | }; | |
40 | static const int Logic0[] = { | |
41 | 1, 1, 1, 1, | |
42 | 1, 1, 1, 1, | |
43 | -1, -1, -1, -1, | |
44 | -1, -1, -1, -1 | |
45 | }; | |
46 | static const int Logic1[] = { | |
47 | -1, -1, -1, -1, | |
48 | -1, -1, -1, -1, | |
49 | 1, 1, 1, 1, | |
50 | 1, 1, 1, 1 | |
51 | }; | |
52 | ||
53 | // EOF defined as | |
54 | // 1) logic '0' (8 pulses of 423.75khz followed by unmodulated for 18.88us) | |
55 | // 2) 24 pulses of 423.75khz | |
56 | // 3) Unmodulated time of 56.64us | |
57 | ||
58 | static const int FrameEOF[] = { | |
59 | 1, 1, 1, 1, | |
60 | 1, 1, 1, 1, | |
61 | -1, -1, -1, -1, | |
62 | -1, -1, -1, -1, | |
63 | 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, | |
64 | 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, | |
65 | -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, | |
66 | -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1 | |
67 | }; | |
68 | ||
f7e3ed82 | 69 | static void CodeIso15693AsReader(uint8_t *cmd, int n) |
15c4dc5a | 70 | { |
71 | int i, j; | |
72 | ||
73 | ToSendReset(); | |
74 | ||
75 | // Give it a bit of slack at the beginning | |
76 | for(i = 0; i < 24; i++) { | |
77 | ToSendStuffBit(1); | |
78 | } | |
79 | ||
80 | ToSendStuffBit(0); | |
81 | ToSendStuffBit(1); | |
82 | ToSendStuffBit(1); | |
83 | ToSendStuffBit(1); | |
84 | ToSendStuffBit(1); | |
85 | ToSendStuffBit(0); | |
86 | ToSendStuffBit(1); | |
87 | ToSendStuffBit(1); | |
88 | for(i = 0; i < n; i++) { | |
89 | for(j = 0; j < 8; j += 2) { | |
90 | int these = (cmd[i] >> j) & 3; | |
91 | switch(these) { | |
92 | case 0: | |
93 | ToSendStuffBit(1); | |
94 | ToSendStuffBit(0); | |
95 | ToSendStuffBit(1); | |
96 | ToSendStuffBit(1); | |
97 | ToSendStuffBit(1); | |
98 | ToSendStuffBit(1); | |
99 | ToSendStuffBit(1); | |
100 | ToSendStuffBit(1); | |
101 | break; | |
102 | case 1: | |
103 | ToSendStuffBit(1); | |
104 | ToSendStuffBit(1); | |
105 | ToSendStuffBit(1); | |
106 | ToSendStuffBit(0); | |
107 | ToSendStuffBit(1); | |
108 | ToSendStuffBit(1); | |
109 | ToSendStuffBit(1); | |
110 | ToSendStuffBit(1); | |
111 | break; | |
112 | case 2: | |
113 | ToSendStuffBit(1); | |
114 | ToSendStuffBit(1); | |
115 | ToSendStuffBit(1); | |
116 | ToSendStuffBit(1); | |
117 | ToSendStuffBit(1); | |
118 | ToSendStuffBit(0); | |
119 | ToSendStuffBit(1); | |
120 | ToSendStuffBit(1); | |
121 | break; | |
122 | case 3: | |
123 | ToSendStuffBit(1); | |
124 | ToSendStuffBit(1); | |
125 | ToSendStuffBit(1); | |
126 | ToSendStuffBit(1); | |
127 | ToSendStuffBit(1); | |
128 | ToSendStuffBit(1); | |
129 | ToSendStuffBit(1); | |
130 | ToSendStuffBit(0); | |
131 | break; | |
132 | } | |
133 | } | |
134 | } | |
135 | ToSendStuffBit(1); | |
136 | ToSendStuffBit(1); | |
137 | ToSendStuffBit(0); | |
138 | ToSendStuffBit(1); | |
139 | ||
140 | // And slack at the end, too. | |
141 | for(i = 0; i < 24; i++) { | |
142 | ToSendStuffBit(1); | |
143 | } | |
144 | } | |
145 | ||
146 | //----------------------------------------------------------------------------- | |
147 | // The CRC used by ISO 15693. | |
148 | //----------------------------------------------------------------------------- | |
f7e3ed82 | 149 | static uint16_t Crc(uint8_t *v, int n) |
15c4dc5a | 150 | { |
f7e3ed82 | 151 | uint32_t reg; |
15c4dc5a | 152 | int i, j; |
153 | ||
154 | reg = 0xffff; | |
155 | for(i = 0; i < n; i++) { | |
f7e3ed82 | 156 | reg = reg ^ ((uint32_t)v[i]); |
15c4dc5a | 157 | for (j = 0; j < 8; j++) { |
158 | if (reg & 0x0001) { | |
159 | reg = (reg >> 1) ^ 0x8408; | |
160 | } else { | |
161 | reg = (reg >> 1); | |
162 | } | |
163 | } | |
164 | } | |
165 | ||
166 | return ~reg; | |
167 | } | |
168 | ||
169 | char *strcat(char *dest, const char *src) | |
170 | { | |
171 | size_t dest_len = strlen(dest); | |
172 | size_t i; | |
e30c654b | 173 | |
15c4dc5a | 174 | for (i = 0 ; src[i] != '\0' ; i++) |
175 | dest[dest_len + i] = src[i]; | |
176 | dest[dest_len + i] = '\0'; | |
e30c654b | 177 | |
15c4dc5a | 178 | return dest; |
179 | } | |
180 | ||
181 | ////////////////////////////////////////// code to do 'itoa' | |
182 | ||
183 | /* reverse: reverse string s in place */ | |
184 | void reverse(char s[]) | |
185 | { | |
186 | int c, i, j; | |
187 | ||
188 | for (i = 0, j = strlen(s)-1; i<j; i++, j--) { | |
189 | c = s[i]; | |
190 | s[i] = s[j]; | |
191 | s[j] = c; | |
192 | } | |
193 | } | |
194 | ||
195 | /* itoa: convert n to characters in s */ | |
196 | void itoa(int n, char s[]) | |
197 | { | |
198 | int i, sign; | |
199 | ||
200 | if ((sign = n) < 0) /* record sign */ | |
201 | n = -n; /* make n positive */ | |
202 | i = 0; | |
203 | do { /* generate digits in reverse order */ | |
204 | s[i++] = n % 10 + '0'; /* get next digit */ | |
205 | } while ((n /= 10) > 0); /* delete it */ | |
206 | if (sign < 0) | |
207 | s[i++] = '-'; | |
208 | s[i] = '\0'; | |
209 | reverse(s); | |
210 | } | |
211 | ||
212 | //////////////////////////////////////// END 'itoa' CODE | |
213 | ||
214 | //----------------------------------------------------------------------------- | |
215 | // Encode (into the ToSend buffers) an identify request, which is the first | |
216 | // thing that you must send to a tag to get a response. | |
217 | //----------------------------------------------------------------------------- | |
218 | static void BuildIdentifyRequest(void) | |
219 | { | |
f7e3ed82 | 220 | uint8_t cmd[5]; |
15c4dc5a | 221 | |
f7e3ed82 | 222 | uint16_t crc; |
15c4dc5a | 223 | // one sub-carrier, inventory, 1 slot, fast rate |
224 | // AFI is at bit 5 (1<<4) when doing an INVENTORY | |
225 | cmd[0] = (1 << 2) | (1 << 5) | (1 << 1); | |
226 | // inventory command code | |
227 | cmd[1] = 0x01; | |
228 | // no mask | |
229 | cmd[2] = 0x00; | |
230 | //Now the CRC | |
231 | crc = Crc(cmd, 3); | |
232 | cmd[3] = crc & 0xff; | |
233 | cmd[4] = crc >> 8; | |
234 | ||
235 | CodeIso15693AsReader(cmd, sizeof(cmd)); | |
236 | } | |
237 | ||
f7e3ed82 | 238 | static void __attribute__((unused)) BuildSysInfoRequest(uint8_t *uid) |
15c4dc5a | 239 | { |
f7e3ed82 | 240 | uint8_t cmd[12]; |
15c4dc5a | 241 | |
f7e3ed82 | 242 | uint16_t crc; |
15c4dc5a | 243 | // If we set the Option_Flag in this request, the VICC will respond with the secuirty status of the block |
244 | // followed by teh block data | |
245 | // one sub-carrier, inventory, 1 slot, fast rate | |
246 | cmd[0] = (1 << 5) | (1 << 1); // no SELECT bit | |
247 | // System Information command code | |
248 | cmd[1] = 0x2B; | |
249 | // UID may be optionally specified here | |
250 | // 64-bit UID | |
251 | cmd[2] = 0x32; | |
252 | cmd[3]= 0x4b; | |
253 | cmd[4] = 0x03; | |
254 | cmd[5] = 0x01; | |
255 | cmd[6] = 0x00; | |
256 | cmd[7] = 0x10; | |
257 | cmd[8] = 0x05; | |
258 | cmd[9]= 0xe0; // always e0 (not exactly unique) | |
259 | //Now the CRC | |
260 | crc = Crc(cmd, 10); // the crc needs to be calculated over 2 bytes | |
261 | cmd[10] = crc & 0xff; | |
262 | cmd[11] = crc >> 8; | |
263 | ||
264 | CodeIso15693AsReader(cmd, sizeof(cmd)); | |
265 | } | |
266 | ||
f7e3ed82 | 267 | static void BuildSelectRequest( uint8_t uid[]) |
15c4dc5a | 268 | { |
269 | ||
270 | // uid[6]=0x31; // this is getting ignored - the uid array is not happening... | |
f7e3ed82 | 271 | uint8_t cmd[12]; |
15c4dc5a | 272 | |
f7e3ed82 | 273 | uint16_t crc; |
15c4dc5a | 274 | // one sub-carrier, inventory, 1 slot, fast rate |
275 | //cmd[0] = (1 << 2) | (1 << 5) | (1 << 1); // INVENTROY FLAGS | |
276 | cmd[0] = (1 << 4) | (1 << 5) | (1 << 1); // Select and addressed FLAGS | |
277 | // SELECT command code | |
278 | cmd[1] = 0x25; | |
279 | // 64-bit UID | |
280 | // cmd[2] = uid[0];//0x32; | |
281 | // cmd[3]= uid[1];//0x4b; | |
282 | // cmd[4] = uid[2];//0x03; | |
283 | // cmd[5] = uid[3];//0x01; | |
284 | // cmd[6] = uid[4];//0x00; | |
285 | // cmd[7] = uid[5];//0x10; | |
286 | // cmd[8] = uid[6];//0x05; | |
287 | cmd[2] = 0x32;// | |
288 | cmd[3] = 0x4b; | |
289 | cmd[4] = 0x03; | |
290 | cmd[5] = 0x01; | |
291 | cmd[6] = 0x00; | |
292 | cmd[7] = 0x10; | |
293 | cmd[8] = 0x05; // infineon? | |
294 | ||
295 | cmd[9]= 0xe0; // always e0 (not exactly unique) | |
296 | ||
297 | // DbpIntegers(cmd[8],cmd[7],cmd[6]); | |
298 | // Now the CRC | |
299 | crc = Crc(cmd, 10); // the crc needs to be calculated over 10 bytes | |
300 | cmd[10] = crc & 0xff; | |
301 | cmd[11] = crc >> 8; | |
302 | ||
303 | CodeIso15693AsReader(cmd, sizeof(cmd)); | |
304 | } | |
305 | ||
f7e3ed82 | 306 | static void __attribute__((unused)) BuildReadBlockRequest(uint8_t *uid, uint8_t blockNumber ) |
15c4dc5a | 307 | { |
f7e3ed82 | 308 | uint8_t cmd[13]; |
15c4dc5a | 309 | |
f7e3ed82 | 310 | uint16_t crc; |
15c4dc5a | 311 | // If we set the Option_Flag in this request, the VICC will respond with the secuirty status of the block |
312 | // followed by teh block data | |
313 | // one sub-carrier, inventory, 1 slot, fast rate | |
314 | cmd[0] = (1 << 6)| (1 << 5) | (1 << 1); // no SELECT bit | |
315 | // READ BLOCK command code | |
316 | cmd[1] = 0x20; | |
317 | // UID may be optionally specified here | |
318 | // 64-bit UID | |
319 | cmd[2] = 0x32; | |
320 | cmd[3]= 0x4b; | |
321 | cmd[4] = 0x03; | |
322 | cmd[5] = 0x01; | |
323 | cmd[6] = 0x00; | |
324 | cmd[7] = 0x10; | |
325 | cmd[8] = 0x05; | |
326 | cmd[9]= 0xe0; // always e0 (not exactly unique) | |
327 | // Block number to read | |
328 | cmd[10] = blockNumber;//0x00; | |
329 | //Now the CRC | |
330 | crc = Crc(cmd, 11); // the crc needs to be calculated over 2 bytes | |
331 | cmd[11] = crc & 0xff; | |
332 | cmd[12] = crc >> 8; | |
333 | ||
334 | CodeIso15693AsReader(cmd, sizeof(cmd)); | |
335 | } | |
336 | ||
f7e3ed82 | 337 | static void __attribute__((unused)) BuildReadMultiBlockRequest(uint8_t *uid) |
15c4dc5a | 338 | { |
f7e3ed82 | 339 | uint8_t cmd[14]; |
15c4dc5a | 340 | |
f7e3ed82 | 341 | uint16_t crc; |
15c4dc5a | 342 | // If we set the Option_Flag in this request, the VICC will respond with the secuirty status of the block |
343 | // followed by teh block data | |
344 | // one sub-carrier, inventory, 1 slot, fast rate | |
345 | cmd[0] = (1 << 5) | (1 << 1); // no SELECT bit | |
346 | // READ Multi BLOCK command code | |
347 | cmd[1] = 0x23; | |
348 | // UID may be optionally specified here | |
349 | // 64-bit UID | |
350 | cmd[2] = 0x32; | |
351 | cmd[3]= 0x4b; | |
352 | cmd[4] = 0x03; | |
353 | cmd[5] = 0x01; | |
354 | cmd[6] = 0x00; | |
355 | cmd[7] = 0x10; | |
356 | cmd[8] = 0x05; | |
357 | cmd[9]= 0xe0; // always e0 (not exactly unique) | |
358 | // First Block number to read | |
359 | cmd[10] = 0x00; | |
360 | // Number of Blocks to read | |
361 | cmd[11] = 0x2f; // read quite a few | |
362 | //Now the CRC | |
363 | crc = Crc(cmd, 12); // the crc needs to be calculated over 2 bytes | |
364 | cmd[12] = crc & 0xff; | |
365 | cmd[13] = crc >> 8; | |
366 | ||
367 | CodeIso15693AsReader(cmd, sizeof(cmd)); | |
368 | } | |
369 | ||
f7e3ed82 | 370 | static void __attribute__((unused)) BuildArbitraryRequest(uint8_t *uid,uint8_t CmdCode) |
15c4dc5a | 371 | { |
f7e3ed82 | 372 | uint8_t cmd[14]; |
15c4dc5a | 373 | |
f7e3ed82 | 374 | uint16_t crc; |
15c4dc5a | 375 | // If we set the Option_Flag in this request, the VICC will respond with the secuirty status of the block |
376 | // followed by teh block data | |
377 | // one sub-carrier, inventory, 1 slot, fast rate | |
378 | cmd[0] = (1 << 5) | (1 << 1); // no SELECT bit | |
379 | // READ BLOCK command code | |
380 | cmd[1] = CmdCode; | |
381 | // UID may be optionally specified here | |
382 | // 64-bit UID | |
383 | cmd[2] = 0x32; | |
384 | cmd[3]= 0x4b; | |
385 | cmd[4] = 0x03; | |
386 | cmd[5] = 0x01; | |
387 | cmd[6] = 0x00; | |
388 | cmd[7] = 0x10; | |
389 | cmd[8] = 0x05; | |
390 | cmd[9]= 0xe0; // always e0 (not exactly unique) | |
391 | // Parameter | |
392 | cmd[10] = 0x00; | |
393 | cmd[11] = 0x0a; | |
394 | ||
395 | // cmd[12] = 0x00; | |
396 | // cmd[13] = 0x00; //Now the CRC | |
397 | crc = Crc(cmd, 12); // the crc needs to be calculated over 2 bytes | |
398 | cmd[12] = crc & 0xff; | |
399 | cmd[13] = crc >> 8; | |
400 | ||
401 | CodeIso15693AsReader(cmd, sizeof(cmd)); | |
402 | } | |
403 | ||
f7e3ed82 | 404 | static void __attribute__((unused)) BuildArbitraryCustomRequest(uint8_t uid[], uint8_t CmdCode) |
15c4dc5a | 405 | { |
f7e3ed82 | 406 | uint8_t cmd[14]; |
15c4dc5a | 407 | |
f7e3ed82 | 408 | uint16_t crc; |
15c4dc5a | 409 | // If we set the Option_Flag in this request, the VICC will respond with the secuirty status of the block |
410 | // followed by teh block data | |
411 | // one sub-carrier, inventory, 1 slot, fast rate | |
412 | cmd[0] = (1 << 5) | (1 << 1); // no SELECT bit | |
413 | // READ BLOCK command code | |
414 | cmd[1] = CmdCode; | |
415 | // UID may be optionally specified here | |
416 | // 64-bit UID | |
417 | cmd[2] = 0x32; | |
418 | cmd[3]= 0x4b; | |
419 | cmd[4] = 0x03; | |
420 | cmd[5] = 0x01; | |
421 | cmd[6] = 0x00; | |
422 | cmd[7] = 0x10; | |
423 | cmd[8] = 0x05; | |
424 | cmd[9]= 0xe0; // always e0 (not exactly unique) | |
425 | // Parameter | |
426 | cmd[10] = 0x05; // for custom codes this must be manufcturer code | |
427 | cmd[11] = 0x00; | |
428 | ||
429 | // cmd[12] = 0x00; | |
430 | // cmd[13] = 0x00; //Now the CRC | |
431 | crc = Crc(cmd, 12); // the crc needs to be calculated over 2 bytes | |
432 | cmd[12] = crc & 0xff; | |
433 | cmd[13] = crc >> 8; | |
434 | ||
435 | CodeIso15693AsReader(cmd, sizeof(cmd)); | |
436 | } | |
437 | ||
438 | ///////////////////////////////////////////////////////////////////////// | |
439 | // Now the VICC>VCD responses when we are simulating a tag | |
440 | //////////////////////////////////////////////////////////////////// | |
441 | ||
442 | static void BuildInventoryResponse(void) | |
443 | { | |
f7e3ed82 | 444 | uint8_t cmd[12]; |
15c4dc5a | 445 | |
f7e3ed82 | 446 | uint16_t crc; |
15c4dc5a | 447 | // one sub-carrier, inventory, 1 slot, fast rate |
448 | // AFI is at bit 5 (1<<4) when doing an INVENTORY | |
449 | cmd[0] = 0; //(1 << 2) | (1 << 5) | (1 << 1); | |
450 | cmd[1] = 0; | |
451 | // 64-bit UID | |
452 | cmd[2] = 0x32; | |
453 | cmd[3]= 0x4b; | |
454 | cmd[4] = 0x03; | |
455 | cmd[5] = 0x01; | |
456 | cmd[6] = 0x00; | |
457 | cmd[7] = 0x10; | |
458 | cmd[8] = 0x05; | |
459 | cmd[9]= 0xe0; | |
460 | //Now the CRC | |
461 | crc = Crc(cmd, 10); | |
462 | cmd[10] = crc & 0xff; | |
463 | cmd[11] = crc >> 8; | |
464 | ||
465 | CodeIso15693AsReader(cmd, sizeof(cmd)); | |
466 | } | |
467 | ||
468 | //----------------------------------------------------------------------------- | |
469 | // Transmit the command (to the tag) that was placed in ToSend[]. | |
470 | //----------------------------------------------------------------------------- | |
f7e3ed82 | 471 | static void TransmitTo15693Tag(const uint8_t *cmd, int len, int *samples, int *wait) |
15c4dc5a | 472 | { |
473 | int c; | |
474 | ||
475 | // FpgaWriteConfWord(FPGA_MAJOR_MODE_HF_ISO14443A | FPGA_HF_ISO14443A_READER_MOD); | |
476 | FpgaWriteConfWord(FPGA_MAJOR_MODE_HF_READER_TX); | |
477 | if(*wait < 10) { *wait = 10; } | |
478 | ||
479 | // for(c = 0; c < *wait;) { | |
480 | // if(AT91C_BASE_SSC->SSC_SR & (AT91C_SSC_TXRDY)) { | |
481 | // AT91C_BASE_SSC->SSC_THR = 0x00; // For exact timing! | |
482 | // c++; | |
483 | // } | |
484 | // if(AT91C_BASE_SSC->SSC_SR & (AT91C_SSC_RXRDY)) { | |
f7e3ed82 | 485 | // volatile uint32_t r = AT91C_BASE_SSC->SSC_RHR; |
15c4dc5a | 486 | // (void)r; |
487 | // } | |
488 | // WDT_HIT(); | |
489 | // } | |
490 | ||
491 | c = 0; | |
492 | for(;;) { | |
493 | if(AT91C_BASE_SSC->SSC_SR & (AT91C_SSC_TXRDY)) { | |
494 | AT91C_BASE_SSC->SSC_THR = cmd[c]; | |
495 | c++; | |
496 | if(c >= len) { | |
497 | break; | |
498 | } | |
499 | } | |
500 | if(AT91C_BASE_SSC->SSC_SR & (AT91C_SSC_RXRDY)) { | |
f7e3ed82 | 501 | volatile uint32_t r = AT91C_BASE_SSC->SSC_RHR; |
15c4dc5a | 502 | (void)r; |
503 | } | |
504 | WDT_HIT(); | |
505 | } | |
506 | *samples = (c + *wait) << 3; | |
507 | } | |
508 | ||
509 | //----------------------------------------------------------------------------- | |
510 | // Transmit the command (to the reader) that was placed in ToSend[]. | |
511 | //----------------------------------------------------------------------------- | |
f7e3ed82 | 512 | static void TransmitTo15693Reader(const uint8_t *cmd, int len, int *samples, int *wait) |
15c4dc5a | 513 | { |
514 | int c; | |
515 | ||
516 | // FpgaWriteConfWord(FPGA_MAJOR_MODE_HF_READER_TX); | |
517 | FpgaWriteConfWord(FPGA_MAJOR_MODE_HF_SIMULATOR); // No requirement to energise my coils | |
518 | if(*wait < 10) { *wait = 10; } | |
519 | ||
520 | c = 0; | |
521 | for(;;) { | |
522 | if(AT91C_BASE_SSC->SSC_SR & (AT91C_SSC_TXRDY)) { | |
523 | AT91C_BASE_SSC->SSC_THR = cmd[c]; | |
524 | c++; | |
525 | if(c >= len) { | |
526 | break; | |
527 | } | |
528 | } | |
529 | if(AT91C_BASE_SSC->SSC_SR & (AT91C_SSC_RXRDY)) { | |
f7e3ed82 | 530 | volatile uint32_t r = AT91C_BASE_SSC->SSC_RHR; |
15c4dc5a | 531 | (void)r; |
532 | } | |
533 | WDT_HIT(); | |
534 | } | |
535 | *samples = (c + *wait) << 3; | |
536 | } | |
537 | ||
f7e3ed82 | 538 | static int GetIso15693AnswerFromTag(uint8_t *receivedResponse, int maxLen, int *samples, int *elapsed) |
15c4dc5a | 539 | { |
540 | int c = 0; | |
f7e3ed82 | 541 | uint8_t *dest = (uint8_t *)BigBuf; |
15c4dc5a | 542 | int getNext = 0; |
543 | ||
f7e3ed82 | 544 | int8_t prev = 0; |
15c4dc5a | 545 | |
546 | // NOW READ RESPONSE | |
547 | FpgaWriteConfWord(FPGA_MAJOR_MODE_HF_READER_RX_XCORR); | |
548 | //spindelay(60); // greg - experiment to get rid of some of the 0 byte/failed reads | |
549 | c = 0; | |
550 | getNext = FALSE; | |
551 | for(;;) { | |
552 | if(AT91C_BASE_SSC->SSC_SR & (AT91C_SSC_TXRDY)) { | |
553 | AT91C_BASE_SSC->SSC_THR = 0x43; | |
554 | } | |
555 | if(AT91C_BASE_SSC->SSC_SR & (AT91C_SSC_RXRDY)) { | |
f7e3ed82 | 556 | int8_t b; |
557 | b = (int8_t)AT91C_BASE_SSC->SSC_RHR; | |
15c4dc5a | 558 | |
559 | // The samples are correlations against I and Q versions of the | |
560 | // tone that the tag AM-modulates, so every other sample is I, | |
561 | // every other is Q. We just want power, so abs(I) + abs(Q) is | |
562 | // close to what we want. | |
563 | if(getNext) { | |
f7e3ed82 | 564 | int8_t r; |
15c4dc5a | 565 | |
566 | if(b < 0) { | |
567 | r = -b; | |
568 | } else { | |
569 | r = b; | |
570 | } | |
571 | if(prev < 0) { | |
572 | r -= prev; | |
573 | } else { | |
574 | r += prev; | |
575 | } | |
576 | ||
f7e3ed82 | 577 | dest[c++] = (uint8_t)r; |
15c4dc5a | 578 | |
579 | if(c >= 2000) { | |
580 | break; | |
581 | } | |
582 | } else { | |
583 | prev = b; | |
584 | } | |
585 | ||
586 | getNext = !getNext; | |
587 | } | |
588 | } | |
589 | ||
590 | ////////////////////////////////////////// | |
591 | /////////// DEMODULATE /////////////////// | |
592 | ////////////////////////////////////////// | |
593 | ||
594 | int i, j; | |
595 | int max = 0, maxPos=0; | |
596 | ||
597 | int skip = 4; | |
598 | ||
599 | // if(GraphTraceLen < 1000) return; // THIS CHECKS FOR A BUFFER TO SMALL | |
600 | ||
601 | // First, correlate for SOF | |
602 | for(i = 0; i < 100; i++) { | |
603 | int corr = 0; | |
604 | for(j = 0; j < arraylen(FrameSOF); j += skip) { | |
605 | corr += FrameSOF[j]*dest[i+(j/skip)]; | |
606 | } | |
607 | if(corr > max) { | |
608 | max = corr; | |
609 | maxPos = i; | |
610 | } | |
611 | } | |
612 | // DbpString("SOF at %d, correlation %d", maxPos,max/(arraylen(FrameSOF)/skip)); | |
613 | ||
614 | int k = 0; // this will be our return value | |
615 | ||
616 | // greg - If correlation is less than 1 then there's little point in continuing | |
617 | if ((max/(arraylen(FrameSOF)/skip)) >= 1) | |
618 | { | |
619 | ||
620 | i = maxPos + arraylen(FrameSOF)/skip; | |
621 | ||
f7e3ed82 | 622 | uint8_t outBuf[20]; |
15c4dc5a | 623 | memset(outBuf, 0, sizeof(outBuf)); |
f7e3ed82 | 624 | uint8_t mask = 0x01; |
15c4dc5a | 625 | for(;;) { |
626 | int corr0 = 0, corr1 = 0, corrEOF = 0; | |
627 | for(j = 0; j < arraylen(Logic0); j += skip) { | |
628 | corr0 += Logic0[j]*dest[i+(j/skip)]; | |
629 | } | |
630 | for(j = 0; j < arraylen(Logic1); j += skip) { | |
631 | corr1 += Logic1[j]*dest[i+(j/skip)]; | |
632 | } | |
633 | for(j = 0; j < arraylen(FrameEOF); j += skip) { | |
634 | corrEOF += FrameEOF[j]*dest[i+(j/skip)]; | |
635 | } | |
636 | // Even things out by the length of the target waveform. | |
637 | corr0 *= 4; | |
638 | corr1 *= 4; | |
639 | ||
640 | if(corrEOF > corr1 && corrEOF > corr0) { | |
641 | // DbpString("EOF at %d", i); | |
642 | break; | |
643 | } else if(corr1 > corr0) { | |
644 | i += arraylen(Logic1)/skip; | |
645 | outBuf[k] |= mask; | |
646 | } else { | |
647 | i += arraylen(Logic0)/skip; | |
648 | } | |
649 | mask <<= 1; | |
650 | if(mask == 0) { | |
651 | k++; | |
652 | mask = 0x01; | |
653 | } | |
654 | if((i+(int)arraylen(FrameEOF)) >= 2000) { | |
655 | DbpString("ran off end!"); | |
656 | break; | |
657 | } | |
658 | } | |
659 | if(mask != 0x01) { | |
660 | DbpString("error, uneven octet! (discard extra bits!)"); | |
661 | /// DbpString(" mask=%02x", mask); | |
662 | } | |
f7e3ed82 | 663 | // uint8_t str1 [8]; |
15c4dc5a | 664 | // itoa(k,str1); |
665 | // strcat(str1," octets read"); | |
666 | ||
667 | // DbpString( str1); // DbpString("%d octets", k); | |
668 | ||
669 | // for(i = 0; i < k; i+=3) { | |
670 | // //DbpString("# %2d: %02x ", i, outBuf[i]); | |
671 | // DbpIntegers(outBuf[i],outBuf[i+1],outBuf[i+2]); | |
672 | // } | |
673 | ||
674 | for(i = 0; i < k; i++) { | |
675 | receivedResponse[i] = outBuf[i]; | |
676 | } | |
677 | } // "end if correlation > 0" (max/(arraylen(FrameSOF)/skip)) | |
678 | return k; // return the number of bytes demodulated | |
679 | ||
680 | /// DbpString("CRC=%04x", Iso15693Crc(outBuf, k-2)); | |
681 | ||
682 | } | |
683 | ||
684 | // Now the GetISO15693 message from sniffing command | |
f7e3ed82 | 685 | static int GetIso15693AnswerFromSniff(uint8_t *receivedResponse, int maxLen, int *samples, int *elapsed) |
15c4dc5a | 686 | { |
687 | int c = 0; | |
f7e3ed82 | 688 | uint8_t *dest = (uint8_t *)BigBuf; |
15c4dc5a | 689 | int getNext = 0; |
690 | ||
f7e3ed82 | 691 | int8_t prev = 0; |
15c4dc5a | 692 | |
693 | // NOW READ RESPONSE | |
694 | FpgaWriteConfWord(FPGA_MAJOR_MODE_HF_READER_RX_XCORR); | |
695 | //spindelay(60); // greg - experiment to get rid of some of the 0 byte/failed reads | |
696 | c = 0; | |
697 | getNext = FALSE; | |
698 | for(;;) { | |
699 | if(AT91C_BASE_SSC->SSC_SR & (AT91C_SSC_TXRDY)) { | |
700 | AT91C_BASE_SSC->SSC_THR = 0x43; | |
701 | } | |
702 | if(AT91C_BASE_SSC->SSC_SR & (AT91C_SSC_RXRDY)) { | |
f7e3ed82 | 703 | int8_t b; |
704 | b = (int8_t)AT91C_BASE_SSC->SSC_RHR; | |
15c4dc5a | 705 | |
706 | // The samples are correlations against I and Q versions of the | |
707 | // tone that the tag AM-modulates, so every other sample is I, | |
708 | // every other is Q. We just want power, so abs(I) + abs(Q) is | |
709 | // close to what we want. | |
710 | if(getNext) { | |
f7e3ed82 | 711 | int8_t r; |
15c4dc5a | 712 | |
713 | if(b < 0) { | |
714 | r = -b; | |
715 | } else { | |
716 | r = b; | |
717 | } | |
718 | if(prev < 0) { | |
719 | r -= prev; | |
720 | } else { | |
721 | r += prev; | |
722 | } | |
723 | ||
f7e3ed82 | 724 | dest[c++] = (uint8_t)r; |
15c4dc5a | 725 | |
726 | if(c >= 20000) { | |
727 | break; | |
728 | } | |
729 | } else { | |
730 | prev = b; | |
731 | } | |
732 | ||
733 | getNext = !getNext; | |
734 | } | |
735 | } | |
736 | ||
737 | ////////////////////////////////////////// | |
738 | /////////// DEMODULATE /////////////////// | |
739 | ////////////////////////////////////////// | |
740 | ||
741 | int i, j; | |
742 | int max = 0, maxPos=0; | |
743 | ||
744 | int skip = 4; | |
745 | ||
746 | // if(GraphTraceLen < 1000) return; // THIS CHECKS FOR A BUFFER TO SMALL | |
747 | ||
748 | // First, correlate for SOF | |
749 | for(i = 0; i < 19000; i++) { | |
750 | int corr = 0; | |
751 | for(j = 0; j < arraylen(FrameSOF); j += skip) { | |
752 | corr += FrameSOF[j]*dest[i+(j/skip)]; | |
753 | } | |
754 | if(corr > max) { | |
755 | max = corr; | |
756 | maxPos = i; | |
757 | } | |
758 | } | |
759 | // DbpString("SOF at %d, correlation %d", maxPos,max/(arraylen(FrameSOF)/skip)); | |
760 | ||
761 | int k = 0; // this will be our return value | |
762 | ||
763 | // greg - If correlation is less than 1 then there's little point in continuing | |
764 | if ((max/(arraylen(FrameSOF)/skip)) >= 1) // THIS SHOULD BE 1 | |
765 | { | |
766 | ||
767 | i = maxPos + arraylen(FrameSOF)/skip; | |
768 | ||
f7e3ed82 | 769 | uint8_t outBuf[20]; |
15c4dc5a | 770 | memset(outBuf, 0, sizeof(outBuf)); |
f7e3ed82 | 771 | uint8_t mask = 0x01; |
15c4dc5a | 772 | for(;;) { |
773 | int corr0 = 0, corr1 = 0, corrEOF = 0; | |
774 | for(j = 0; j < arraylen(Logic0); j += skip) { | |
775 | corr0 += Logic0[j]*dest[i+(j/skip)]; | |
776 | } | |
777 | for(j = 0; j < arraylen(Logic1); j += skip) { | |
778 | corr1 += Logic1[j]*dest[i+(j/skip)]; | |
779 | } | |
780 | for(j = 0; j < arraylen(FrameEOF); j += skip) { | |
781 | corrEOF += FrameEOF[j]*dest[i+(j/skip)]; | |
782 | } | |
783 | // Even things out by the length of the target waveform. | |
784 | corr0 *= 4; | |
785 | corr1 *= 4; | |
786 | ||
787 | if(corrEOF > corr1 && corrEOF > corr0) { | |
788 | // DbpString("EOF at %d", i); | |
789 | break; | |
790 | } else if(corr1 > corr0) { | |
791 | i += arraylen(Logic1)/skip; | |
792 | outBuf[k] |= mask; | |
793 | } else { | |
794 | i += arraylen(Logic0)/skip; | |
795 | } | |
796 | mask <<= 1; | |
797 | if(mask == 0) { | |
798 | k++; | |
799 | mask = 0x01; | |
800 | } | |
801 | if((i+(int)arraylen(FrameEOF)) >= 2000) { | |
802 | DbpString("ran off end!"); | |
803 | break; | |
804 | } | |
805 | } | |
806 | if(mask != 0x01) { | |
807 | DbpString("error, uneven octet! (discard extra bits!)"); | |
808 | /// DbpString(" mask=%02x", mask); | |
809 | } | |
f7e3ed82 | 810 | // uint8_t str1 [8]; |
15c4dc5a | 811 | // itoa(k,str1); |
812 | // strcat(str1," octets read"); | |
813 | ||
814 | // DbpString( str1); // DbpString("%d octets", k); | |
815 | ||
816 | // for(i = 0; i < k; i+=3) { | |
817 | // //DbpString("# %2d: %02x ", i, outBuf[i]); | |
818 | // DbpIntegers(outBuf[i],outBuf[i+1],outBuf[i+2]); | |
819 | // } | |
820 | ||
821 | for(i = 0; i < k; i++) { | |
822 | receivedResponse[i] = outBuf[i]; | |
823 | } | |
824 | } // "end if correlation > 0" (max/(arraylen(FrameSOF)/skip)) | |
825 | return k; // return the number of bytes demodulated | |
826 | ||
827 | /// DbpString("CRC=%04x", Iso15693Crc(outBuf, k-2)); | |
828 | } | |
829 | ||
830 | //----------------------------------------------------------------------------- | |
831 | // Start to read an ISO 15693 tag. We send an identify request, then wait | |
832 | // for the response. The response is not demodulated, just left in the buffer | |
833 | // so that it can be downloaded to a PC and processed there. | |
834 | //----------------------------------------------------------------------------- | |
835 | void AcquireRawAdcSamplesIso15693(void) | |
836 | { | |
837 | int c = 0; | |
f7e3ed82 | 838 | uint8_t *dest = (uint8_t *)BigBuf; |
15c4dc5a | 839 | int getNext = 0; |
840 | ||
f7e3ed82 | 841 | int8_t prev = 0; |
15c4dc5a | 842 | |
843 | BuildIdentifyRequest(); | |
844 | ||
845 | SetAdcMuxFor(GPIO_MUXSEL_HIPKD); | |
846 | ||
847 | // Give the tags time to energize | |
848 | FpgaWriteConfWord(FPGA_MAJOR_MODE_HF_READER_RX_XCORR); | |
849 | SpinDelay(100); | |
850 | ||
851 | // Now send the command | |
852 | FpgaSetupSsc(); | |
853 | FpgaWriteConfWord(FPGA_MAJOR_MODE_HF_READER_TX); | |
854 | ||
855 | c = 0; | |
856 | for(;;) { | |
857 | if(AT91C_BASE_SSC->SSC_SR & (AT91C_SSC_TXRDY)) { | |
858 | AT91C_BASE_SSC->SSC_THR = ToSend[c]; | |
859 | c++; | |
860 | if(c == ToSendMax+3) { | |
861 | break; | |
862 | } | |
863 | } | |
864 | if(AT91C_BASE_SSC->SSC_SR & (AT91C_SSC_RXRDY)) { | |
f7e3ed82 | 865 | volatile uint32_t r = AT91C_BASE_SSC->SSC_RHR; |
15c4dc5a | 866 | (void)r; |
867 | } | |
868 | WDT_HIT(); | |
869 | } | |
870 | ||
871 | FpgaWriteConfWord(FPGA_MAJOR_MODE_HF_READER_RX_XCORR); | |
872 | ||
873 | c = 0; | |
874 | getNext = FALSE; | |
875 | for(;;) { | |
876 | if(AT91C_BASE_SSC->SSC_SR & (AT91C_SSC_TXRDY)) { | |
877 | AT91C_BASE_SSC->SSC_THR = 0x43; | |
878 | } | |
879 | if(AT91C_BASE_SSC->SSC_SR & (AT91C_SSC_RXRDY)) { | |
f7e3ed82 | 880 | int8_t b; |
881 | b = (int8_t)AT91C_BASE_SSC->SSC_RHR; | |
15c4dc5a | 882 | |
883 | // The samples are correlations against I and Q versions of the | |
884 | // tone that the tag AM-modulates, so every other sample is I, | |
885 | // every other is Q. We just want power, so abs(I) + abs(Q) is | |
886 | // close to what we want. | |
887 | if(getNext) { | |
f7e3ed82 | 888 | int8_t r; |
15c4dc5a | 889 | |
890 | if(b < 0) { | |
891 | r = -b; | |
892 | } else { | |
893 | r = b; | |
894 | } | |
895 | if(prev < 0) { | |
896 | r -= prev; | |
897 | } else { | |
898 | r += prev; | |
899 | } | |
900 | ||
f7e3ed82 | 901 | dest[c++] = (uint8_t)r; |
15c4dc5a | 902 | |
903 | if(c >= 2000) { | |
904 | break; | |
905 | } | |
906 | } else { | |
907 | prev = b; | |
908 | } | |
909 | ||
910 | getNext = !getNext; | |
911 | } | |
912 | } | |
913 | } | |
914 | ||
915 | //----------------------------------------------------------------------------- | |
916 | // Simulate an ISO15693 reader, perform anti-collision and then attempt to read a sector | |
917 | // all demodulation performed in arm rather than host. - greg | |
918 | //----------------------------------------------------------------------------- | |
f7e3ed82 | 919 | void ReaderIso15693(uint32_t parameter) |
15c4dc5a | 920 | { |
921 | LED_A_ON(); | |
922 | LED_B_ON(); | |
923 | LED_C_OFF(); | |
924 | LED_D_OFF(); | |
925 | ||
926 | //DbpString(parameter); | |
927 | ||
f7e3ed82 | 928 | //uint8_t *answer0 = (((uint8_t *)BigBuf) + 3560); // allow 100 bytes per reponse (way too much) |
929 | uint8_t *answer1 = (((uint8_t *)BigBuf) + 3660); // | |
930 | uint8_t *answer2 = (((uint8_t *)BigBuf) + 3760); | |
931 | uint8_t *answer3 = (((uint8_t *)BigBuf) + 3860); | |
932 | //uint8_t *TagUID= (((uint8_t *)BigBuf) + 3960); // where we hold the uid for hi15reader | |
15c4dc5a | 933 | // int answerLen0 = 0; |
934 | int answerLen1 = 0; | |
935 | int answerLen2 = 0; | |
936 | int answerLen3 = 0; | |
937 | ||
938 | // Blank arrays | |
939 | memset(BigBuf + 3660, 0, 300); | |
940 | ||
941 | // Setup SSC | |
942 | FpgaSetupSsc(); | |
943 | ||
944 | // Start from off (no field generated) | |
945 | FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF); | |
946 | SpinDelay(200); | |
947 | ||
948 | SetAdcMuxFor(GPIO_MUXSEL_HIPKD); | |
949 | FpgaSetupSsc(); | |
950 | ||
951 | // Give the tags time to energize | |
952 | FpgaWriteConfWord(FPGA_MAJOR_MODE_HF_READER_RX_XCORR); | |
953 | SpinDelay(200); | |
954 | ||
955 | LED_A_ON(); | |
956 | LED_B_OFF(); | |
957 | LED_C_OFF(); | |
958 | LED_D_OFF(); | |
959 | ||
960 | int samples = 0; | |
961 | int tsamples = 0; | |
962 | int wait = 0; | |
963 | int elapsed = 0; | |
964 | ||
965 | // FIRST WE RUN AN INVENTORY TO GET THE TAG UID | |
966 | // THIS MEANS WE CAN PRE-BUILD REQUESTS TO SAVE CPU TIME | |
f7e3ed82 | 967 | uint8_t TagUID[7]; // where we hold the uid for hi15reader |
15c4dc5a | 968 | |
969 | // BuildIdentifyRequest(); | |
970 | // //TransmitTo15693Tag(ToSend,ToSendMax+3,&tsamples, &wait); | |
971 | // TransmitTo15693Tag(ToSend,ToSendMax,&tsamples, &wait); // No longer ToSendMax+3 | |
972 | // // Now wait for a response | |
973 | // responseLen0 = GetIso15693AnswerFromTag(receivedAnswer0, 100, &samples, &elapsed) ; | |
974 | // if (responseLen0 >=12) // we should do a better check than this | |
975 | // { | |
976 | // // really we should check it is a valid mesg | |
977 | // // but for now just grab what we think is the uid | |
978 | // TagUID[0] = receivedAnswer0[2]; | |
979 | // TagUID[1] = receivedAnswer0[3]; | |
980 | // TagUID[2] = receivedAnswer0[4]; | |
981 | // TagUID[3] = receivedAnswer0[5]; | |
982 | // TagUID[4] = receivedAnswer0[6]; | |
983 | // TagUID[5] = receivedAnswer0[7]; | |
984 | // TagUID[6] = receivedAnswer0[8]; // IC Manufacturer code | |
985 | // DbpIntegers(TagUID[6],TagUID[5],TagUID[4]); | |
986 | //} | |
987 | ||
988 | // Now send the IDENTIFY command | |
989 | BuildIdentifyRequest(); | |
990 | //TransmitTo15693Tag(ToSend,ToSendMax+3,&tsamples, &wait); | |
991 | TransmitTo15693Tag(ToSend,ToSendMax,&tsamples, &wait); // No longer ToSendMax+3 | |
992 | // Now wait for a response | |
993 | answerLen1 = GetIso15693AnswerFromTag(answer1, 100, &samples, &elapsed) ; | |
994 | ||
995 | if (answerLen1 >=12) // we should do a better check than this | |
996 | { | |
997 | ||
998 | TagUID[0] = answer1[2]; | |
999 | TagUID[1] = answer1[3]; | |
1000 | TagUID[2] = answer1[4]; | |
1001 | TagUID[3] = answer1[5]; | |
1002 | TagUID[4] = answer1[6]; | |
1003 | TagUID[5] = answer1[7]; | |
1004 | TagUID[6] = answer1[8]; // IC Manufacturer code | |
1005 | ||
1006 | // Now send the SELECT command | |
1007 | BuildSelectRequest(TagUID); | |
1008 | TransmitTo15693Tag(ToSend,ToSendMax,&tsamples, &wait); // No longer ToSendMax+3 | |
1009 | // Now wait for a response | |
1010 | answerLen2 = GetIso15693AnswerFromTag(answer2, 100, &samples, &elapsed); | |
1011 | ||
1012 | // Now send the MULTI READ command | |
1013 | // BuildArbitraryRequest(*TagUID,parameter); | |
1014 | BuildArbitraryCustomRequest(TagUID,parameter); | |
1015 | // BuildReadBlockRequest(*TagUID,parameter); | |
1016 | // BuildSysInfoRequest(*TagUID); | |
1017 | //TransmitTo15693Tag(ToSend,ToSendMax+3,&tsamples, &wait); | |
1018 | TransmitTo15693Tag(ToSend,ToSendMax,&tsamples, &wait); // No longer ToSendMax+3 | |
1019 | // Now wait for a response | |
1020 | answerLen3 = GetIso15693AnswerFromTag(answer3, 100, &samples, &elapsed) ; | |
1021 | ||
1022 | } | |
1023 | ||
1024 | Dbprintf("%d octets read from IDENTIFY request: %x %x %x %x %x %x %x %x %x", answerLen1, | |
1025 | answer1[0], answer1[1], answer1[2], | |
1026 | answer1[3], answer1[4], answer1[5], | |
1027 | answer1[6], answer1[7], answer1[8]); | |
1028 | ||
1029 | Dbprintf("%d octets read from SELECT request: %x %x %x %x %x %x %x %x %x", answerLen2, | |
1030 | answer2[0], answer2[1], answer2[2], | |
1031 | answer2[3], answer2[4], answer2[5], | |
1032 | answer2[6], answer2[7], answer2[8]); | |
1033 | ||
1034 | Dbprintf("%d octets read from XXX request: %x %x %x %x %x %x %x %x %x", answerLen3, | |
1035 | answer3[0], answer3[1], answer3[2], | |
1036 | answer3[3], answer3[4], answer3[5], | |
1037 | answer3[6], answer3[7], answer3[8]); | |
1038 | ||
1039 | ||
1040 | // str2[0]=0; | |
1041 | // for(i = 0; i < responseLen3; i++) { | |
1042 | // itoa(str1,receivedAnswer3[i]); | |
1043 | // strcat(str2,str1); | |
1044 | // } | |
1045 | // DbpString(str2); | |
1046 | ||
1047 | LED_A_OFF(); | |
1048 | LED_B_OFF(); | |
1049 | LED_C_OFF(); | |
1050 | LED_D_OFF(); | |
1051 | } | |
1052 | ||
1053 | //----------------------------------------------------------------------------- | |
1054 | // Simulate an ISO15693 TAG, perform anti-collision and then print any reader commands | |
1055 | // all demodulation performed in arm rather than host. - greg | |
1056 | //----------------------------------------------------------------------------- | |
f7e3ed82 | 1057 | void SimTagIso15693(uint32_t parameter) |
15c4dc5a | 1058 | { |
1059 | LED_A_ON(); | |
1060 | LED_B_ON(); | |
1061 | LED_C_OFF(); | |
1062 | LED_D_OFF(); | |
1063 | ||
f7e3ed82 | 1064 | uint8_t *answer1 = (((uint8_t *)BigBuf) + 3660); // |
15c4dc5a | 1065 | int answerLen1 = 0; |
1066 | ||
1067 | // Blank arrays | |
1068 | memset(answer1, 0, 100); | |
1069 | ||
1070 | // Setup SSC | |
1071 | FpgaSetupSsc(); | |
1072 | ||
1073 | // Start from off (no field generated) | |
1074 | FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF); | |
1075 | SpinDelay(200); | |
1076 | ||
1077 | SetAdcMuxFor(GPIO_MUXSEL_HIPKD); | |
1078 | FpgaSetupSsc(); | |
1079 | ||
1080 | // Give the tags time to energize | |
1081 | // FpgaWriteConfWord(FPGA_MAJOR_MODE_HF_READER_RX_XCORR); // NO GOOD FOR SIM TAG!!!! | |
1082 | SpinDelay(200); | |
1083 | ||
1084 | LED_A_OFF(); | |
1085 | LED_B_OFF(); | |
1086 | LED_C_ON(); | |
1087 | LED_D_OFF(); | |
1088 | ||
1089 | int samples = 0; | |
1090 | int tsamples = 0; | |
1091 | int wait = 0; | |
1092 | int elapsed = 0; | |
1093 | ||
1094 | answerLen1 = GetIso15693AnswerFromSniff(answer1, 100, &samples, &elapsed) ; | |
1095 | ||
1096 | if (answerLen1 >=1) // we should do a better check than this | |
1097 | { | |
1098 | // Build a suitable reponse to the reader INVENTORY cocmmand | |
1099 | BuildInventoryResponse(); | |
1100 | TransmitTo15693Reader(ToSend,ToSendMax, &tsamples, &wait); | |
1101 | } | |
1102 | ||
1103 | Dbprintf("%d octets read from reader command: %x %x %x %x %x %x %x %x %x", answerLen1, | |
1104 | answer1[0], answer1[1], answer1[2], | |
1105 | answer1[3], answer1[4], answer1[5], | |
1106 | answer1[6], answer1[7], answer1[8]); | |
1107 | ||
1108 | LED_A_OFF(); | |
1109 | LED_B_OFF(); | |
1110 | LED_C_OFF(); | |
1111 | LED_D_OFF(); | |
1112 | } |