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1 //-----------------------------------------------------------------------------
2 // The main application code. This is the first thing called after start.c
3 // executes.
4 // Jonathan Westhues, Mar 2006
5 // Edits by Gerhard de Koning Gans, Sep 2007 (##)
6 //-----------------------------------------------------------------------------
7
8 #include <proxmark3.h>
9 #include <stdlib.h>
10 #include "apps.h"
11 #include "legicrf.h"
12 #ifdef WITH_LCD
13 #include "fonts.h"
14 #include "LCD.h"
15 #endif
16
17 #define va_list __builtin_va_list
18 #define va_start __builtin_va_start
19 #define va_arg __builtin_va_arg
20 #define va_end __builtin_va_end
21 int kvsprintf(char const *fmt, void *arg, int radix, va_list ap);
22
23 //=============================================================================
24 // A buffer where we can queue things up to be sent through the FPGA, for
25 // any purpose (fake tag, as reader, whatever). We go MSB first, since that
26 // is the order in which they go out on the wire.
27 //=============================================================================
28
29 BYTE ToSend[512];
30 int ToSendMax;
31 static int ToSendBit;
32 struct common_area common_area __attribute__((section(".commonarea")));
33
34 void BufferClear(void)
35 {
36 memset(BigBuf,0,sizeof(BigBuf));
37 Dbprintf("Buffer cleared (%i bytes)",sizeof(BigBuf));
38 }
39
40 void ToSendReset(void)
41 {
42 ToSendMax = -1;
43 ToSendBit = 8;
44 }
45
46 void ToSendStuffBit(int b)
47 {
48 if(ToSendBit >= 8) {
49 ToSendMax++;
50 ToSend[ToSendMax] = 0;
51 ToSendBit = 0;
52 }
53
54 if(b) {
55 ToSend[ToSendMax] |= (1 << (7 - ToSendBit));
56 }
57
58 ToSendBit++;
59
60 if(ToSendBit >= sizeof(ToSend)) {
61 ToSendBit = 0;
62 DbpString("ToSendStuffBit overflowed!");
63 }
64 }
65
66 //=============================================================================
67 // Debug print functions, to go out over USB, to the usual PC-side client.
68 //=============================================================================
69
70 void DbpString(char *str)
71 {
72 /* this holds up stuff unless we're connected to usb */
73 if (!UsbConnected())
74 return;
75
76 UsbCommand c;
77 c.cmd = CMD_DEBUG_PRINT_STRING;
78 c.arg[0] = strlen(str);
79 if(c.arg[0] > sizeof(c.d.asBytes)) {
80 c.arg[0] = sizeof(c.d.asBytes);
81 }
82 memcpy(c.d.asBytes, str, c.arg[0]);
83
84 UsbSendPacket((BYTE *)&c, sizeof(c));
85 // TODO fix USB so stupid things like this aren't req'd
86 SpinDelay(50);
87 }
88
89 #if 0
90 void DbpIntegers(int x1, int x2, int x3)
91 {
92 /* this holds up stuff unless we're connected to usb */
93 if (!UsbConnected())
94 return;
95
96 UsbCommand c;
97 c.cmd = CMD_DEBUG_PRINT_INTEGERS;
98 c.arg[0] = x1;
99 c.arg[1] = x2;
100 c.arg[2] = x3;
101
102 UsbSendPacket((BYTE *)&c, sizeof(c));
103 // XXX
104 SpinDelay(50);
105 }
106 #endif
107
108 void Dbprintf(const char *fmt, ...) {
109 // should probably limit size here; oh well, let's just use a big buffer
110 char output_string[128];
111 va_list ap;
112
113 va_start(ap, fmt);
114 kvsprintf(fmt, output_string, 10, ap);
115 va_end(ap);
116
117 DbpString(output_string);
118 }
119
120 //-----------------------------------------------------------------------------
121 // Read an ADC channel and block till it completes, then return the result
122 // in ADC units (0 to 1023). Also a routine to average 32 samples and
123 // return that.
124 //-----------------------------------------------------------------------------
125 static int ReadAdc(int ch)
126 {
127 DWORD d;
128
129 AT91C_BASE_ADC->ADC_CR = AT91C_ADC_SWRST;
130 AT91C_BASE_ADC->ADC_MR =
131 ADC_MODE_PRESCALE(32) |
132 ADC_MODE_STARTUP_TIME(16) |
133 ADC_MODE_SAMPLE_HOLD_TIME(8);
134 AT91C_BASE_ADC->ADC_CHER = ADC_CHANNEL(ch);
135
136 AT91C_BASE_ADC->ADC_CR = AT91C_ADC_START;
137 while(!(AT91C_BASE_ADC->ADC_SR & ADC_END_OF_CONVERSION(ch)))
138 ;
139 d = AT91C_BASE_ADC->ADC_CDR[ch];
140
141 return d;
142 }
143
144 static int AvgAdc(int ch)
145 {
146 int i;
147 int a = 0;
148
149 for(i = 0; i < 32; i++) {
150 a += ReadAdc(ch);
151 }
152
153 return (a + 15) >> 5;
154 }
155
156 void MeasureAntennaTuning(void)
157 {
158 BYTE *dest = (BYTE *)BigBuf;
159 int i, ptr = 0, adcval = 0, peak = 0, peakv = 0, peakf = 0;;
160 int vLf125 = 0, vLf134 = 0, vHf = 0; // in mV
161
162 UsbCommand c;
163
164 DbpString("Measuring antenna characteristics, please wait.");
165 memset(BigBuf,0,sizeof(BigBuf));
166
167 /*
168 * Sweeps the useful LF range of the proxmark from
169 * 46.8kHz (divisor=255) to 600kHz (divisor=19) and
170 * read the voltage in the antenna, the result left
171 * in the buffer is a graph which should clearly show
172 * the resonating frequency of your LF antenna
173 * ( hopefully around 95 if it is tuned to 125kHz!)
174 */
175 FpgaWriteConfWord(FPGA_MAJOR_MODE_LF_READER);
176 for (i=255; i>19; i--) {
177 FpgaSendCommand(FPGA_CMD_SET_DIVISOR, i);
178 SpinDelay(20);
179 // Vref = 3.3V, and a 10000:240 voltage divider on the input
180 // can measure voltages up to 137500 mV
181 adcval = ((137500 * AvgAdc(ADC_CHAN_LF)) >> 10);
182 if (i==95) vLf125 = adcval; // voltage at 125Khz
183 if (i==89) vLf134 = adcval; // voltage at 134Khz
184
185 dest[i] = adcval>>8; // scale int to fit in byte for graphing purposes
186 if(dest[i] > peak) {
187 peakv = adcval;
188 peak = dest[i];
189 peakf = i;
190 ptr = i;
191 }
192 }
193
194 // Let the FPGA drive the high-frequency antenna around 13.56 MHz.
195 FpgaWriteConfWord(FPGA_MAJOR_MODE_HF_READER_RX_XCORR);
196 SpinDelay(20);
197 // Vref = 3300mV, and an 10:1 voltage divider on the input
198 // can measure voltages up to 33000 mV
199 vHf = (33000 * AvgAdc(ADC_CHAN_HF)) >> 10;
200
201 c.cmd = CMD_MEASURED_ANTENNA_TUNING;
202 c.arg[0] = (vLf125 << 0) | (vLf134 << 16);
203 c.arg[1] = vHf;
204 c.arg[2] = peakf | (peakv << 16);
205 UsbSendPacket((BYTE *)&c, sizeof(c));
206 }
207
208 void MeasureAntennaTuningHf(void)
209 {
210 int vHf = 0; // in mV
211
212 DbpString("Measuring HF antenna, press button to exit");
213
214 for (;;) {
215 // Let the FPGA drive the high-frequency antenna around 13.56 MHz.
216 FpgaWriteConfWord(FPGA_MAJOR_MODE_HF_READER_RX_XCORR);
217 SpinDelay(20);
218 // Vref = 3300mV, and an 10:1 voltage divider on the input
219 // can measure voltages up to 33000 mV
220 vHf = (33000 * AvgAdc(ADC_CHAN_HF)) >> 10;
221
222 Dbprintf("%d mV",vHf);
223 if (BUTTON_PRESS()) break;
224 }
225 DbpString("cancelled");
226 }
227
228
229 void SimulateTagHfListen(void)
230 {
231 BYTE *dest = (BYTE *)BigBuf;
232 int n = sizeof(BigBuf);
233 BYTE v = 0;
234 int i;
235 int p = 0;
236
237 // We're using this mode just so that I can test it out; the simulated
238 // tag mode would work just as well and be simpler.
239 FpgaWriteConfWord(FPGA_MAJOR_MODE_HF_READER_RX_XCORR | FPGA_HF_READER_RX_XCORR_848_KHZ | FPGA_HF_READER_RX_XCORR_SNOOP);
240
241 // We need to listen to the high-frequency, peak-detected path.
242 SetAdcMuxFor(GPIO_MUXSEL_HIPKD);
243
244 FpgaSetupSsc();
245
246 i = 0;
247 for(;;) {
248 if(AT91C_BASE_SSC->SSC_SR & (AT91C_SSC_TXRDY)) {
249 AT91C_BASE_SSC->SSC_THR = 0xff;
250 }
251 if(AT91C_BASE_SSC->SSC_SR & (AT91C_SSC_RXRDY)) {
252 BYTE r = (BYTE)AT91C_BASE_SSC->SSC_RHR;
253
254 v <<= 1;
255 if(r & 1) {
256 v |= 1;
257 }
258 p++;
259
260 if(p >= 8) {
261 dest[i] = v;
262 v = 0;
263 p = 0;
264 i++;
265
266 if(i >= n) {
267 break;
268 }
269 }
270 }
271 }
272 DbpString("simulate tag (now type bitsamples)");
273 }
274
275 void ReadMem(int addr)
276 {
277 const BYTE *data = ((BYTE *)addr);
278
279 Dbprintf("%x: %02x %02x %02x %02x %02x %02x %02x %02x",
280 addr, data[0], data[1], data[2], data[3], data[4], data[5], data[6], data[7]);
281 }
282
283 /* osimage version information is linked in */
284 extern struct version_information version_information;
285 /* bootrom version information is pointed to from _bootphase1_version_pointer */
286 extern char *_bootphase1_version_pointer, _flash_start, _flash_end;
287 void SendVersion(void)
288 {
289 char temp[48]; /* Limited data payload in USB packets */
290 DbpString("Prox/RFID mark3 RFID instrument");
291
292 /* Try to find the bootrom version information. Expect to find a pointer at
293 * symbol _bootphase1_version_pointer, perform slight sanity checks on the
294 * pointer, then use it.
295 */
296 char *bootrom_version = *(char**)&_bootphase1_version_pointer;
297 if( bootrom_version < &_flash_start || bootrom_version >= &_flash_end ) {
298 DbpString("bootrom version information appears invalid");
299 } else {
300 FormatVersionInformation(temp, sizeof(temp), "bootrom: ", bootrom_version);
301 DbpString(temp);
302 }
303
304 FormatVersionInformation(temp, sizeof(temp), "os: ", &version_information);
305 DbpString(temp);
306
307 FpgaGatherVersion(temp, sizeof(temp));
308 DbpString(temp);
309 }
310
311 #ifdef WITH_LF
312 // samy's sniff and repeat routine
313 void SamyRun()
314 {
315 DbpString("Stand-alone mode! No PC necessary.");
316
317 // 3 possible options? no just 2 for now
318 #define OPTS 2
319
320 int high[OPTS], low[OPTS];
321
322 // Oooh pretty -- notify user we're in elite samy mode now
323 LED(LED_RED, 200);
324 LED(LED_ORANGE, 200);
325 LED(LED_GREEN, 200);
326 LED(LED_ORANGE, 200);
327 LED(LED_RED, 200);
328 LED(LED_ORANGE, 200);
329 LED(LED_GREEN, 200);
330 LED(LED_ORANGE, 200);
331 LED(LED_RED, 200);
332
333 int selected = 0;
334 int playing = 0;
335
336 // Turn on selected LED
337 LED(selected + 1, 0);
338
339 for (;;)
340 {
341 UsbPoll(FALSE);
342 WDT_HIT();
343
344 // Was our button held down or pressed?
345 int button_pressed = BUTTON_HELD(1000);
346 SpinDelay(300);
347
348 // Button was held for a second, begin recording
349 if (button_pressed > 0)
350 {
351 LEDsoff();
352 LED(selected + 1, 0);
353 LED(LED_RED2, 0);
354
355 // record
356 DbpString("Starting recording");
357
358 // wait for button to be released
359 while(BUTTON_PRESS())
360 WDT_HIT();
361
362 /* need this delay to prevent catching some weird data */
363 SpinDelay(500);
364
365 CmdHIDdemodFSK(1, &high[selected], &low[selected], 0);
366 Dbprintf("Recorded %x %x %x", selected, high[selected], low[selected]);
367
368 LEDsoff();
369 LED(selected + 1, 0);
370 // Finished recording
371
372 // If we were previously playing, set playing off
373 // so next button push begins playing what we recorded
374 playing = 0;
375 }
376
377 // Change where to record (or begin playing)
378 else if (button_pressed)
379 {
380 // Next option if we were previously playing
381 if (playing)
382 selected = (selected + 1) % OPTS;
383 playing = !playing;
384
385 LEDsoff();
386 LED(selected + 1, 0);
387
388 // Begin transmitting
389 if (playing)
390 {
391 LED(LED_GREEN, 0);
392 DbpString("Playing");
393 // wait for button to be released
394 while(BUTTON_PRESS())
395 WDT_HIT();
396 Dbprintf("%x %x %x", selected, high[selected], low[selected]);
397 CmdHIDsimTAG(high[selected], low[selected], 0);
398 DbpString("Done playing");
399 if (BUTTON_HELD(1000) > 0)
400 {
401 DbpString("Exiting");
402 LEDsoff();
403 return;
404 }
405
406 /* We pressed a button so ignore it here with a delay */
407 SpinDelay(300);
408
409 // when done, we're done playing, move to next option
410 selected = (selected + 1) % OPTS;
411 playing = !playing;
412 LEDsoff();
413 LED(selected + 1, 0);
414 }
415 else
416 while(BUTTON_PRESS())
417 WDT_HIT();
418 }
419 }
420 }
421 #endif
422
423 /*
424 OBJECTIVE
425 Listen and detect an external reader. Determine the best location
426 for the antenna.
427
428 INSTRUCTIONS:
429 Inside the ListenReaderField() function, there is two mode.
430 By default, when you call the function, you will enter mode 1.
431 If you press the PM3 button one time, you will enter mode 2.
432 If you press the PM3 button a second time, you will exit the function.
433
434 DESCRIPTION OF MODE 1:
435 This mode just listens for an external reader field and lights up green
436 for HF and/or red for LF. This is the original mode of the detectreader
437 function.
438
439 DESCRIPTION OF MODE 2:
440 This mode will visually represent, using the LEDs, the actual strength of the
441 current compared to the maximum current detected. Basically, once you know
442 what kind of external reader is present, it will help you spot the best location to place
443 your antenna. You will probably not get some good results if there is a LF and a HF reader
444 at the same place! :-)
445
446 LIGHT SCHEME USED:
447 */
448 static const char LIGHT_SCHEME[] = {
449 0x0, /* ---- | No field detected */
450 0x1, /* X--- | 14% of maximum current detected */
451 0x2, /* -X-- | 29% of maximum current detected */
452 0x4, /* --X- | 43% of maximum current detected */
453 0x8, /* ---X | 57% of maximum current detected */
454 0xC, /* --XX | 71% of maximum current detected */
455 0xE, /* -XXX | 86% of maximum current detected */
456 0xF, /* XXXX | 100% of maximum current detected */
457 };
458 static const int LIGHT_LEN = sizeof(LIGHT_SCHEME)/sizeof(LIGHT_SCHEME[0]);
459
460 void ListenReaderField(int limit)
461 {
462 int lf_av, lf_av_new, lf_baseline= 0, lf_count= 0, lf_max;
463 int hf_av, hf_av_new, hf_baseline= 0, hf_count= 0, hf_max;
464 int mode=1, display_val, display_max, i;
465
466 #define LF_ONLY 1
467 #define HF_ONLY 2
468
469 LEDsoff();
470
471 lf_av=lf_max=ReadAdc(ADC_CHAN_LF);
472
473 if(limit != HF_ONLY) {
474 Dbprintf("LF 125/134 Baseline: %d", lf_av);
475 lf_baseline = lf_av;
476 }
477
478 hf_av=hf_max=ReadAdc(ADC_CHAN_HF);
479
480 if (limit != LF_ONLY) {
481 Dbprintf("HF 13.56 Baseline: %d", hf_av);
482 hf_baseline = hf_av;
483 }
484
485 for(;;) {
486 if (BUTTON_PRESS()) {
487 SpinDelay(500);
488 switch (mode) {
489 case 1:
490 mode=2;
491 DbpString("Signal Strength Mode");
492 break;
493 case 2:
494 default:
495 DbpString("Stopped");
496 LEDsoff();
497 return;
498 break;
499 }
500 }
501 WDT_HIT();
502
503 if (limit != HF_ONLY) {
504 if(mode==1) {
505 if (abs(lf_av - lf_baseline) > 10) LED_D_ON();
506 else LED_D_OFF();
507 }
508
509 ++lf_count;
510 lf_av_new= ReadAdc(ADC_CHAN_LF);
511 // see if there's a significant change
512 if(abs(lf_av - lf_av_new) > 10) {
513 Dbprintf("LF 125/134 Field Change: %x %x %x", lf_av, lf_av_new, lf_count);
514 lf_av = lf_av_new;
515 if (lf_av > lf_max)
516 lf_max = lf_av;
517 lf_count= 0;
518 }
519 }
520
521 if (limit != LF_ONLY) {
522 if (mode == 1){
523 if (abs(hf_av - hf_baseline) > 10) LED_B_ON();
524 else LED_B_OFF();
525 }
526
527 ++hf_count;
528 hf_av_new= ReadAdc(ADC_CHAN_HF);
529 // see if there's a significant change
530 if(abs(hf_av - hf_av_new) > 10) {
531 Dbprintf("HF 13.56 Field Change: %x %x %x", hf_av, hf_av_new, hf_count);
532 hf_av = hf_av_new;
533 if (hf_av > hf_max)
534 hf_max = hf_av;
535 hf_count= 0;
536 }
537 }
538
539 if(mode == 2) {
540 if (limit == LF_ONLY) {
541 display_val = lf_av;
542 display_max = lf_max;
543 } else if (limit == HF_ONLY) {
544 display_val = hf_av;
545 display_max = hf_max;
546 } else { /* Pick one at random */
547 if( (hf_max - hf_baseline) > (lf_max - lf_baseline) ) {
548 display_val = hf_av;
549 display_max = hf_max;
550 } else {
551 display_val = lf_av;
552 display_max = lf_max;
553 }
554 }
555 for (i=0; i<LIGHT_LEN; i++) {
556 if (display_val >= ((display_max/LIGHT_LEN)*i) && display_val <= ((display_max/LIGHT_LEN)*(i+1))) {
557 if (LIGHT_SCHEME[i] & 0x1) LED_C_ON(); else LED_C_OFF();
558 if (LIGHT_SCHEME[i] & 0x2) LED_A_ON(); else LED_A_OFF();
559 if (LIGHT_SCHEME[i] & 0x4) LED_B_ON(); else LED_B_OFF();
560 if (LIGHT_SCHEME[i] & 0x8) LED_D_ON(); else LED_D_OFF();
561 break;
562 }
563 }
564 }
565 }
566 }
567
568 void UsbPacketReceived(BYTE *packet, int len)
569 {
570 UsbCommand *c = (UsbCommand *)packet;
571
572 switch(c->cmd) {
573 #ifdef WITH_LF
574 case CMD_ACQUIRE_RAW_ADC_SAMPLES_125K:
575 AcquireRawAdcSamples125k(c->arg[0]);
576 break;
577 #endif
578
579 #ifdef WITH_LF
580 case CMD_MOD_THEN_ACQUIRE_RAW_ADC_SAMPLES_125K:
581 ModThenAcquireRawAdcSamples125k(c->arg[0],c->arg[1],c->arg[2],c->d.asBytes);
582 break;
583 #endif
584
585 #ifdef WITH_ISO15693
586 case CMD_ACQUIRE_RAW_ADC_SAMPLES_ISO_15693:
587 AcquireRawAdcSamplesIso15693();
588 break;
589 #endif
590
591 case CMD_BUFF_CLEAR:
592 BufferClear();
593 break;
594
595 #ifdef WITH_ISO15693
596 case CMD_READER_ISO_15693:
597 ReaderIso15693(c->arg[0]);
598 break;
599 #endif
600
601 case CMD_READER_LEGIC_RF:
602 LegicRfReader();
603 break;
604
605 #ifdef WITH_ISO15693
606 case CMD_SIMTAG_ISO_15693:
607 SimTagIso15693(c->arg[0]);
608 break;
609 #endif
610
611 #ifdef WITH_ISO14443b
612 case CMD_ACQUIRE_RAW_ADC_SAMPLES_ISO_14443:
613 AcquireRawAdcSamplesIso14443(c->arg[0]);
614 break;
615 #endif
616
617 #ifdef WITH_ISO14443b
618 case CMD_READ_SRI512_TAG:
619 ReadSRI512Iso14443(c->arg[0]);
620 break;
621 case CMD_READ_SRIX4K_TAG:
622 ReadSRIX4KIso14443(c->arg[0]);
623 break;
624 #endif
625
626 #ifdef WITH_ISO14443a
627 case CMD_READER_ISO_14443a:
628 ReaderIso14443a(c->arg[0]);
629 break;
630 #endif
631
632 #ifdef WITH_ISO14443a
633 case CMD_READER_MIFARE:
634 ReaderMifare(c->arg[0]);
635 break;
636 #endif
637
638 #ifdef WITH_ISO14443b
639 case CMD_SNOOP_ISO_14443:
640 SnoopIso14443();
641 break;
642 #endif
643
644 #ifdef WITH_ISO14443a
645 case CMD_SNOOP_ISO_14443a:
646 SnoopIso14443a();
647 break;
648 #endif
649
650 case CMD_SIMULATE_TAG_HF_LISTEN:
651 SimulateTagHfListen();
652 break;
653
654 #ifdef WITH_ISO14443b
655 case CMD_SIMULATE_TAG_ISO_14443:
656 SimulateIso14443Tag();
657 break;
658 #endif
659
660 #ifdef WITH_ISO14443a
661 case CMD_SIMULATE_TAG_ISO_14443a:
662 SimulateIso14443aTag(c->arg[0], c->arg[1]); // ## Simulate iso14443a tag - pass tag type & UID
663 break;
664 #endif
665
666 case CMD_MEASURE_ANTENNA_TUNING:
667 MeasureAntennaTuning();
668 break;
669
670 case CMD_MEASURE_ANTENNA_TUNING_HF:
671 MeasureAntennaTuningHf();
672 break;
673
674 case CMD_LISTEN_READER_FIELD:
675 ListenReaderField(c->arg[0]);
676 break;
677
678 #ifdef WITH_LF
679 case CMD_HID_DEMOD_FSK:
680 CmdHIDdemodFSK(0, 0, 0, 1); // Demodulate HID tag
681 break;
682 #endif
683
684 #ifdef WITH_LF
685 case CMD_HID_SIM_TAG:
686 CmdHIDsimTAG(c->arg[0], c->arg[1], 1); // Simulate HID tag by ID
687 break;
688 #endif
689
690 case CMD_FPGA_MAJOR_MODE_OFF: // ## FPGA Control
691 FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
692 SpinDelay(200);
693 LED_D_OFF(); // LED D indicates field ON or OFF
694 break;
695
696 #ifdef WITH_LF
697 case CMD_READ_TI_TYPE:
698 ReadTItag();
699 break;
700 #endif
701
702 #ifdef WITH_LF
703 case CMD_WRITE_TI_TYPE:
704 WriteTItag(c->arg[0],c->arg[1],c->arg[2]);
705 break;
706 #endif
707
708 case CMD_DOWNLOAD_RAW_ADC_SAMPLES_125K: {
709 UsbCommand n;
710 if(c->cmd == CMD_DOWNLOAD_RAW_ADC_SAMPLES_125K) {
711 n.cmd = CMD_DOWNLOADED_RAW_ADC_SAMPLES_125K;
712 } else {
713 n.cmd = CMD_DOWNLOADED_RAW_BITS_TI_TYPE;
714 }
715 n.arg[0] = c->arg[0];
716 memcpy(n.d.asDwords, BigBuf+c->arg[0], 12*sizeof(DWORD));
717 UsbSendPacket((BYTE *)&n, sizeof(n));
718 break;
719 }
720
721 case CMD_DOWNLOADED_SIM_SAMPLES_125K: {
722 UsbCommand ack;
723 BYTE *b = (BYTE *)BigBuf;
724 memcpy(b+c->arg[0], c->d.asBytes, 48);
725 //Dbprintf("copied 48 bytes to %i",b+c->arg[0]);
726 ack.cmd = CMD_ACK;
727 UsbSendPacket((BYTE*)&ack, sizeof(ack));
728 break;
729 }
730
731 #ifdef WITH_LF
732 case CMD_SIMULATE_TAG_125K:
733 LED_A_ON();
734 SimulateTagLowFrequency(c->arg[0], c->arg[1], 1);
735 LED_A_OFF();
736 break;
737 #endif
738
739 case CMD_READ_MEM:
740 ReadMem(c->arg[0]);
741 break;
742
743 case CMD_SET_LF_DIVISOR:
744 FpgaSendCommand(FPGA_CMD_SET_DIVISOR, c->arg[0]);
745 break;
746
747 case CMD_SET_ADC_MUX:
748 switch(c->arg[0]) {
749 case 0: SetAdcMuxFor(GPIO_MUXSEL_LOPKD); break;
750 case 1: SetAdcMuxFor(GPIO_MUXSEL_LORAW); break;
751 case 2: SetAdcMuxFor(GPIO_MUXSEL_HIPKD); break;
752 case 3: SetAdcMuxFor(GPIO_MUXSEL_HIRAW); break;
753 }
754 break;
755
756 case CMD_VERSION:
757 SendVersion();
758 break;
759
760 #ifdef WITH_LF
761 case CMD_LF_SIMULATE_BIDIR:
762 SimulateTagLowFrequencyBidir(c->arg[0], c->arg[1]);
763 break;
764 #endif
765
766 #ifdef WITH_LCD
767 case CMD_LCD_RESET:
768 LCDReset();
769 break;
770 case CMD_LCD:
771 LCDSend(c->arg[0]);
772 break;
773 #endif
774 case CMD_SETUP_WRITE:
775 case CMD_FINISH_WRITE:
776 case CMD_HARDWARE_RESET:
777 USB_D_PLUS_PULLUP_OFF();
778 SpinDelay(1000);
779 SpinDelay(1000);
780 AT91C_BASE_RSTC->RSTC_RCR = RST_CONTROL_KEY | AT91C_RSTC_PROCRST;
781 for(;;) {
782 // We're going to reset, and the bootrom will take control.
783 }
784 break;
785
786 case CMD_START_FLASH:
787 if(common_area.flags.bootrom_present) {
788 common_area.command = COMMON_AREA_COMMAND_ENTER_FLASH_MODE;
789 }
790 USB_D_PLUS_PULLUP_OFF();
791 AT91C_BASE_RSTC->RSTC_RCR = RST_CONTROL_KEY | AT91C_RSTC_PROCRST;
792 for(;;);
793 break;
794
795 case CMD_DEVICE_INFO: {
796 UsbCommand c;
797 c.cmd = CMD_DEVICE_INFO;
798 c.arg[0] = DEVICE_INFO_FLAG_OSIMAGE_PRESENT | DEVICE_INFO_FLAG_CURRENT_MODE_OS;
799 if(common_area.flags.bootrom_present) c.arg[0] |= DEVICE_INFO_FLAG_BOOTROM_PRESENT;
800 UsbSendPacket((BYTE*)&c, sizeof(c));
801 }
802 break;
803 default:
804 Dbprintf("%s: 0x%04x","unknown command:",c->cmd);
805 break;
806 }
807 }
808
809 void __attribute__((noreturn)) AppMain(void)
810 {
811 SpinDelay(100);
812
813 if(common_area.magic != COMMON_AREA_MAGIC || common_area.version != 1) {
814 /* Initialize common area */
815 memset(&common_area, 0, sizeof(common_area));
816 common_area.magic = COMMON_AREA_MAGIC;
817 common_area.version = 1;
818 }
819 common_area.flags.osimage_present = 1;
820
821 LED_D_OFF();
822 LED_C_OFF();
823 LED_B_OFF();
824 LED_A_OFF();
825
826 UsbStart();
827
828 // The FPGA gets its clock from us from PCK0 output, so set that up.
829 AT91C_BASE_PIOA->PIO_BSR = GPIO_PCK0;
830 AT91C_BASE_PIOA->PIO_PDR = GPIO_PCK0;
831 AT91C_BASE_PMC->PMC_SCER = AT91C_PMC_PCK0;
832 // PCK0 is PLL clock / 4 = 96Mhz / 4 = 24Mhz
833 AT91C_BASE_PMC->PMC_PCKR[0] = AT91C_PMC_CSS_PLL_CLK |
834 AT91C_PMC_PRES_CLK_4;
835 AT91C_BASE_PIOA->PIO_OER = GPIO_PCK0;
836
837 // Reset SPI
838 AT91C_BASE_SPI->SPI_CR = AT91C_SPI_SWRST;
839 // Reset SSC
840 AT91C_BASE_SSC->SSC_CR = AT91C_SSC_SWRST;
841
842 // Load the FPGA image, which we have stored in our flash.
843 FpgaDownloadAndGo();
844
845 #ifdef WITH_LCD
846
847 LCDInit();
848
849 // test text on different colored backgrounds
850 LCDString(" The quick brown fox ", (char *)&FONT6x8,1,1+8*0,WHITE ,BLACK );
851 LCDString(" jumped over the ", (char *)&FONT6x8,1,1+8*1,BLACK ,WHITE );
852 LCDString(" lazy dog. ", (char *)&FONT6x8,1,1+8*2,YELLOW ,RED );
853 LCDString(" AaBbCcDdEeFfGgHhIiJj ", (char *)&FONT6x8,1,1+8*3,RED ,GREEN );
854 LCDString(" KkLlMmNnOoPpQqRrSsTt ", (char *)&FONT6x8,1,1+8*4,MAGENTA,BLUE );
855 LCDString("UuVvWwXxYyZz0123456789", (char *)&FONT6x8,1,1+8*5,BLUE ,YELLOW);
856 LCDString("`-=[]_;',./~!@#$%^&*()", (char *)&FONT6x8,1,1+8*6,BLACK ,CYAN );
857 LCDString(" _+{}|:\\\"<>? ",(char *)&FONT6x8,1,1+8*7,BLUE ,MAGENTA);
858
859 // color bands
860 LCDFill(0, 1+8* 8, 132, 8, BLACK);
861 LCDFill(0, 1+8* 9, 132, 8, WHITE);
862 LCDFill(0, 1+8*10, 132, 8, RED);
863 LCDFill(0, 1+8*11, 132, 8, GREEN);
864 LCDFill(0, 1+8*12, 132, 8, BLUE);
865 LCDFill(0, 1+8*13, 132, 8, YELLOW);
866 LCDFill(0, 1+8*14, 132, 8, CYAN);
867 LCDFill(0, 1+8*15, 132, 8, MAGENTA);
868
869 #endif
870
871 for(;;) {
872 UsbPoll(FALSE);
873 WDT_HIT();
874
875 #ifdef WITH_LF
876 if (BUTTON_HELD(1000) > 0)
877 SamyRun();
878 #endif
879 }
880 }
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