mirror of
https://github.com/RfidResearchGroup/proxmark3.git
synced 2025-08-20 13:23:51 -07:00
FIX: The T55x7ReadBlock method, should not have the startgap since it indicats that it might be a write command. See if this fixes the bug.
ADD: Extracted the whole pcf7931 functionality into seperat files. The lfops.c is starting to become too large.
This commit is contained in:
iceman1001
parent
274e7dd110
commit
368044201a
7 changed files with 546 additions and 539 deletions
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@ -15,7 +15,7 @@ APP_CFLAGS = -DWITH_ISO14443a_StandAlone -DWITH_LF -DWITH_ISO15693 -DWITH_ISO144
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#-DWITH_LCD
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#SRC_LCD = fonts.c LCD.c
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SRC_LF = lfops.c hitag2.c lfsampling.c
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SRC_LF = lfops.c hitag2.c lfsampling.c pcf7931.c
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SRC_ISO15693 = iso15693.c iso15693tools.c
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SRC_ISO14443a = epa.c iso14443a.c mifareutil.c mifarecmd.c mifaresniff.c
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SRC_ISO14443b = iso14443b.c
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@ -26,6 +26,7 @@
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#include "lfsampling.h"
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#include "BigBuf.h"
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#include "mifareutil.h"
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#include "pcf7931.h"
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#ifdef WITH_LCD
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#include "LCD.h"
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#endif
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@ -24,6 +24,7 @@
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#include "usb_cdc.h"
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#include "hitag2.h"
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#include "mifare.h"
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#include "pcf7931.h"
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//#include "des.h"
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//#include "aes.h"
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#include "desfire.h"
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@ -90,6 +91,11 @@ void T55xxWriteBlock(uint32_t Data, uint32_t Block, uint32_t Pwd, uint8_t PwdMod
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void T55xxReadBlock(uint32_t Block, uint32_t Pwd, uint8_t PwdMode );
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void T55xxReadTrace(void);
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void TurnReadLFOn();
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void EM4xReadWord(uint8_t Address, uint32_t Pwd, uint8_t PwdMode);
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void EM4xWriteWord(uint32_t Data, uint8_t Address, uint32_t Pwd, uint8_t PwdMode);
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void CopyViKingtoT55x7(uint32_t block1,uint32_t block2);
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/// pcf7931.h
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int DemodPCF7931(uint8_t **outBlocks);
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int IsBlock0PCF7931(uint8_t *Block);
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int IsBlock1PCF7931(uint8_t *Block);
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@ -99,8 +105,6 @@ bool AddBytePCF7931(uint8_t byte, uint32_t * tab, int32_t l, int32_t p);
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bool AddBitPCF7931(bool b, uint32_t * tab, int32_t l, int32_t p);
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bool AddPatternPCF7931(uint32_t a, uint32_t b, uint32_t c, uint32_t * tab);
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void WritePCF7931(uint8_t pass1, uint8_t pass2, uint8_t pass3, uint8_t pass4, uint8_t pass5, uint8_t pass6, uint8_t pass7, uint16_t init_delay, int32_t l, int32_t p, uint8_t address, uint8_t byte, uint8_t data);
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void EM4xReadWord(uint8_t Address, uint32_t Pwd, uint8_t PwdMode);
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void EM4xWriteWord(uint32_t Data, uint8_t Address, uint32_t Pwd, uint8_t PwdMode);
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/// iso14443.h
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void SimulateIso14443bTag(void);
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@ -166,7 +170,6 @@ void OnSuccess();
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void OnError(uint8_t reason);
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// desfire_crypto.h
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void *mifare_cryto_preprocess_data (desfiretag_t tag, void *data, size_t *nbytes, off_t offset, int communication_settings);
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void *mifare_cryto_postprocess_data (desfiretag_t tag, void *data, ssize_t *nbytes, int communication_settings);
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@ -179,7 +182,6 @@ size_t enciphered_data_length (const desfiretag_t tag, const size_t nbytes, int
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void cmac_generate_subkeys (desfirekey_t key);
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void cmac (const desfirekey_t key, uint8_t *ivect, const uint8_t *data, size_t len, uint8_t *cmac);
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/// iso15693.h
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void RecordRawAdcSamplesIso15693(void);
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void AcquireRawAdcSamplesIso15693(void);
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@ -203,7 +205,7 @@ void iClass_Dump(uint8_t blockno, uint8_t numblks);
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void iClass_Clone(uint8_t startblock, uint8_t endblock, uint8_t *data);
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void iClass_ReadCheck(uint8_t blockNo, uint8_t keyType);
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void CopyViKingtoT55x7(uint32_t block1,uint32_t block2);
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// hitag2.h
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void SnoopHitag(uint32_t type);
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void SimulateHitagTag(bool tag_mem_supplied, byte_t* data);
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533
armsrc/lfops.c
533
armsrc/lfops.c
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@ -73,8 +73,6 @@ void ModThenAcquireRawAdcSamples125k(int delay_off, int period_0, int period_1,
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DoAcquisition_config(false);
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}
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/* blank r/w tag data stream
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...0000000000000000 01111111
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1010101010101010101010101010101010101010101010101010101010101010
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@ -1247,7 +1245,7 @@ void T55xxReadBlock(uint32_t Block, uint32_t Pwd, uint8_t PwdMode)
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SpinDelay(50);
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FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
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SpinDelayUs(START_GAP);
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//SpinDelayUs(START_GAP);
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// Opcode
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T55xxWriteBit(1);
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@ -1625,274 +1623,6 @@ void CopyIndala224toT55x7(int uid1, int uid2, int uid3, int uid4, int uid5, int
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}
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#define abs(x) ( ((x)<0) ? -(x) : (x) )
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#define max(x,y) ( x<y ? y:x)
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int DemodPCF7931(uint8_t **outBlocks) {
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uint8_t bits[256] = {0x00};
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uint8_t blocks[8][16];
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uint8_t *dest = BigBuf_get_addr();
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int GraphTraceLen = BigBuf_max_traceLen();
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if ( GraphTraceLen > 18000 )
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GraphTraceLen = 18000;
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int i, j, lastval, bitidx, half_switch;
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int clock = 64;
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int tolerance = clock / 8;
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int pmc, block_done;
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int lc, warnings = 0;
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int num_blocks = 0;
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int lmin=128, lmax=128;
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uint8_t dir;
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LFSetupFPGAForADC(95, true);
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DoAcquisition_default(0, true);
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lmin = 64;
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lmax = 192;
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i = 2;
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/* Find first local max/min */
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if(dest[1] > dest[0]) {
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while(i < GraphTraceLen) {
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if( !(dest[i] > dest[i-1]) && dest[i] > lmax)
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break;
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i++;
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}
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dir = 0;
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}
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else {
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while(i < GraphTraceLen) {
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if( !(dest[i] < dest[i-1]) && dest[i] < lmin)
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break;
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i++;
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}
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dir = 1;
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}
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lastval = i++;
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half_switch = 0;
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pmc = 0;
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block_done = 0;
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for (bitidx = 0; i < GraphTraceLen; i++)
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{
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if ( (dest[i-1] > dest[i] && dir == 1 && dest[i] > lmax) || (dest[i-1] < dest[i] && dir == 0 && dest[i] < lmin))
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{
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lc = i - lastval;
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lastval = i;
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// Switch depending on lc length:
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// Tolerance is 1/8 of clock rate (arbitrary)
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if (abs(lc-clock/4) < tolerance) {
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// 16T0
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if((i - pmc) == lc) { /* 16T0 was previous one */
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/* It's a PMC ! */
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i += (128+127+16+32+33+16)-1;
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lastval = i;
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pmc = 0;
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block_done = 1;
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}
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else {
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pmc = i;
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}
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} else if (abs(lc-clock/2) < tolerance) {
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// 32TO
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if((i - pmc) == lc) { /* 16T0 was previous one */
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/* It's a PMC ! */
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i += (128+127+16+32+33)-1;
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lastval = i;
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pmc = 0;
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block_done = 1;
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}
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else if(half_switch == 1) {
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bits[bitidx++] = 0;
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half_switch = 0;
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}
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else
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half_switch++;
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} else if (abs(lc-clock) < tolerance) {
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// 64TO
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bits[bitidx++] = 1;
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} else {
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// Error
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warnings++;
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if (warnings > 10)
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{
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Dbprintf("Error: too many detection errors, aborting.");
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return 0;
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}
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}
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if(block_done == 1) {
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if(bitidx == 128) {
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for(j=0; j<16; j++) {
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blocks[num_blocks][j] = 128*bits[j*8+7]+
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64*bits[j*8+6]+
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32*bits[j*8+5]+
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16*bits[j*8+4]+
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8*bits[j*8+3]+
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4*bits[j*8+2]+
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2*bits[j*8+1]+
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bits[j*8];
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}
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num_blocks++;
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}
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bitidx = 0;
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block_done = 0;
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half_switch = 0;
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}
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if(i < GraphTraceLen)
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dir =(dest[i-1] > dest[i]) ? 0 : 1;
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}
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if(bitidx==255)
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bitidx=0;
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warnings = 0;
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if(num_blocks == 4) break;
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}
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memcpy(outBlocks, blocks, 16*num_blocks);
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return num_blocks;
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}
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int IsBlock0PCF7931(uint8_t *Block) {
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// Assume RFU means 0 :)
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if((memcmp(Block, "\x00\x00\x00\x00\x00\x00\x00\x01", 8) == 0) && memcmp(Block+9, "\x00\x00\x00\x00\x00\x00\x00", 7) == 0) // PAC enabled
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return 1;
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if((memcmp(Block+9, "\x00\x00\x00\x00\x00\x00\x00", 7) == 0) && Block[7] == 0) // PAC disabled, can it *really* happen ?
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return 1;
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return 0;
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}
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int IsBlock1PCF7931(uint8_t *Block) {
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// Assume RFU means 0 :)
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if(Block[10] == 0 && Block[11] == 0 && Block[12] == 0 && Block[13] == 0)
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if((Block[14] & 0x7f) <= 9 && Block[15] <= 9)
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return 1;
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return 0;
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}
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#define ALLOC 16
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void ReadPCF7931() {
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uint8_t Blocks[8][17];
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uint8_t tmpBlocks[4][16];
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int i, j, ind, ind2, n;
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int num_blocks = 0;
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int max_blocks = 8;
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int ident = 0;
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int error = 0;
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int tries = 0;
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memset(Blocks, 0, 8*17*sizeof(uint8_t));
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do {
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memset(tmpBlocks, 0, 4*16*sizeof(uint8_t));
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n = DemodPCF7931((uint8_t**)tmpBlocks);
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if(!n)
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error++;
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if(error==10 && num_blocks == 0) {
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Dbprintf("Error, no tag or bad tag");
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return;
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}
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else if (tries==20 || error==10) {
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Dbprintf("Error reading the tag");
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Dbprintf("Here is the partial content");
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goto end;
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}
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for(i=0; i<n; i++)
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Dbprintf("(dbg) %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x",
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tmpBlocks[i][0], tmpBlocks[i][1], tmpBlocks[i][2], tmpBlocks[i][3], tmpBlocks[i][4], tmpBlocks[i][5], tmpBlocks[i][6], tmpBlocks[i][7],
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tmpBlocks[i][8], tmpBlocks[i][9], tmpBlocks[i][10], tmpBlocks[i][11], tmpBlocks[i][12], tmpBlocks[i][13], tmpBlocks[i][14], tmpBlocks[i][15]);
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if(!ident) {
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for(i=0; i<n; i++) {
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if(IsBlock0PCF7931(tmpBlocks[i])) {
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// Found block 0 ?
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if(i < n-1 && IsBlock1PCF7931(tmpBlocks[i+1])) {
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// Found block 1!
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// \o/
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ident = 1;
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memcpy(Blocks[0], tmpBlocks[i], 16);
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Blocks[0][ALLOC] = 1;
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memcpy(Blocks[1], tmpBlocks[i+1], 16);
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Blocks[1][ALLOC] = 1;
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max_blocks = max((Blocks[1][14] & 0x7f), Blocks[1][15]) + 1;
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// Debug print
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Dbprintf("(dbg) Max blocks: %d", max_blocks);
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num_blocks = 2;
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// Handle following blocks
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for(j=i+2, ind2=2; j!=i; j++, ind2++, num_blocks++) {
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if(j==n) j=0;
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if(j==i) break;
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memcpy(Blocks[ind2], tmpBlocks[j], 16);
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Blocks[ind2][ALLOC] = 1;
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}
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break;
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}
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}
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}
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}
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else {
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for(i=0; i<n; i++) { // Look for identical block in known blocks
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if(memcmp(tmpBlocks[i], "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00", 16)) { // Block is not full of 00
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for(j=0; j<max_blocks; j++) {
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if(Blocks[j][ALLOC] == 1 && !memcmp(tmpBlocks[i], Blocks[j], 16)) {
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// Found an identical block
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for(ind=i-1,ind2=j-1; ind >= 0; ind--,ind2--) {
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if(ind2 < 0)
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ind2 = max_blocks;
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if(!Blocks[ind2][ALLOC]) { // Block ind2 not already found
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// Dbprintf("Tmp %d -> Block %d", ind, ind2);
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memcpy(Blocks[ind2], tmpBlocks[ind], 16);
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Blocks[ind2][ALLOC] = 1;
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num_blocks++;
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if(num_blocks == max_blocks) goto end;
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}
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}
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for(ind=i+1,ind2=j+1; ind < n; ind++,ind2++) {
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if(ind2 > max_blocks)
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ind2 = 0;
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if(!Blocks[ind2][ALLOC]) { // Block ind2 not already found
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// Dbprintf("Tmp %d -> Block %d", ind, ind2);
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memcpy(Blocks[ind2], tmpBlocks[ind], 16);
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Blocks[ind2][ALLOC] = 1;
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num_blocks++;
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if(num_blocks == max_blocks) goto end;
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}
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}
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}
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}
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}
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}
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}
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tries++;
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if (BUTTON_PRESS()) return;
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} while (num_blocks != max_blocks);
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end:
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Dbprintf("-----------------------------------------");
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Dbprintf("Memory content:");
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Dbprintf("-----------------------------------------");
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for(i=0; i<max_blocks; i++) {
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if(Blocks[i][ALLOC]==1)
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Dbprintf("%02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x",
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Blocks[i][0], Blocks[i][1], Blocks[i][2], Blocks[i][3], Blocks[i][4], Blocks[i][5], Blocks[i][6], Blocks[i][7],
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Blocks[i][8], Blocks[i][9], Blocks[i][10], Blocks[i][11], Blocks[i][12], Blocks[i][13], Blocks[i][14], Blocks[i][15]);
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else
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Dbprintf("<missing block %d>", i);
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}
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Dbprintf("-----------------------------------------");
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return ;
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}
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//-----------------------------------
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// EM4469 / EM4305 routines
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//-----------------------------------
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@ -2114,8 +1844,8 @@ void EM4xWriteWord(uint32_t Data, uint8_t Address, uint32_t Pwd, uint8_t PwdMode
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FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF); // field off
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LED_D_OFF();
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}
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void CopyViKingtoT55x7(uint32_t block1,uint32_t block2)
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{
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void CopyViKingtoT55x7(uint32_t block1,uint32_t block2) {
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LED_D_ON();
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T55xxWriteBlock(block1,1,0,0);
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T55xxWriteBlock(block2,2,0,0);
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@ -2125,260 +1855,3 @@ void CopyViKingtoT55x7(uint32_t block1,uint32_t block2)
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DbpString("DONE!");
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}
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#define T0_PCF 8 //period for the pcf7931 in us
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/* Write on a byte of a PCF7931 tag
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* @param address : address of the block to write
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@param byte : address of the byte to write
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@param data : data to write
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*/
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void WritePCF7931(uint8_t pass1, uint8_t pass2, uint8_t pass3, uint8_t pass4, uint8_t pass5, uint8_t pass6, uint8_t pass7, uint16_t init_delay, int32_t l, int32_t p, uint8_t address, uint8_t byte, uint8_t data)
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{
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uint32_t tab[1024]={0}; // data times frame
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uint32_t u = 0;
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uint8_t parity = 0;
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bool comp = 0;
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//BUILD OF THE DATA FRAME
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//alimentation of the tag (time for initializing)
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AddPatternPCF7931(init_delay, 0, 8192/2*T0_PCF, tab);
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//PMC
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Dbprintf("Initialization delay : %d us", init_delay);
|
||||
AddPatternPCF7931(8192/2*T0_PCF + 319*T0_PCF+70, 3*T0_PCF, 29*T0_PCF, tab);
|
||||
|
||||
Dbprintf("Offsets : %d us on the low pulses width, %d us on the low pulses positions", l, p);
|
||||
|
||||
//password indication bit
|
||||
AddBitPCF7931(1, tab, l, p);
|
||||
|
||||
|
||||
//password (on 56 bits)
|
||||
Dbprintf("Password (LSB first on each byte) : %02x %02x %02x %02x %02x %02x %02x", pass1,pass2,pass3,pass4,pass5,pass6,pass7);
|
||||
AddBytePCF7931(pass1, tab, l, p);
|
||||
AddBytePCF7931(pass2, tab, l, p);
|
||||
AddBytePCF7931(pass3, tab, l, p);
|
||||
AddBytePCF7931(pass4, tab, l, p);
|
||||
AddBytePCF7931(pass5, tab, l, p);
|
||||
AddBytePCF7931(pass6, tab, l, p);
|
||||
AddBytePCF7931(pass7, tab, l, p);
|
||||
|
||||
|
||||
//programming mode (0 or 1)
|
||||
AddBitPCF7931(0, tab, l, p);
|
||||
|
||||
//block adress on 6 bits
|
||||
Dbprintf("Block address : %02x", address);
|
||||
for (u=0; u<6; u++)
|
||||
{
|
||||
if (address&(1<<u)) { // bit 1
|
||||
parity++;
|
||||
AddBitPCF7931(1, tab, l, p);
|
||||
} else{ // bit 0
|
||||
AddBitPCF7931(0, tab, l, p);
|
||||
}
|
||||
}
|
||||
|
||||
//byte address on 4 bits
|
||||
Dbprintf("Byte address : %02x", byte);
|
||||
for (u=0; u<4; u++)
|
||||
{
|
||||
if (byte&(1<<u)) { // bit 1
|
||||
parity++;
|
||||
AddBitPCF7931(1, tab, l, p);
|
||||
} else{ // bit 0
|
||||
AddBitPCF7931(0, tab, l, p);
|
||||
}
|
||||
}
|
||||
|
||||
//data on 8 bits
|
||||
Dbprintf("Data : %02x", data);
|
||||
for (u=0; u<8; u++)
|
||||
{
|
||||
if (data&(1<<u)) { // bit 1
|
||||
parity++;
|
||||
AddBitPCF7931(1, tab, l, p);
|
||||
} else{ //bit 0
|
||||
AddBitPCF7931(0, tab, l, p);
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
//parity bit
|
||||
if((parity%2)==0){
|
||||
AddBitPCF7931(0, tab, l, p); //even parity
|
||||
}else{
|
||||
AddBitPCF7931(1, tab, l, p);//odd parity
|
||||
}
|
||||
|
||||
//time access memory
|
||||
AddPatternPCF7931(5120+2680, 0, 0, tab);
|
||||
|
||||
//conversion of the scale time
|
||||
for(u=0;u<500;u++){
|
||||
tab[u]=(tab[u] * 3)/2;
|
||||
}
|
||||
|
||||
|
||||
//compennsation of the counter reload
|
||||
while (!comp){
|
||||
comp = 1;
|
||||
for(u=0;tab[u]!=0;u++){
|
||||
if(tab[u] > 0xFFFF){
|
||||
tab[u] -= 0xFFFF;
|
||||
comp = 0;
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
SendCmdPCF7931(tab);
|
||||
}
|
||||
|
||||
|
||||
|
||||
/* Send a trame to a PCF7931 tags
|
||||
* @param tab : array of the data frame
|
||||
*/
|
||||
|
||||
void SendCmdPCF7931(uint32_t * tab){
|
||||
uint16_t u=0;
|
||||
uint16_t tempo=0;
|
||||
|
||||
Dbprintf("SENDING DATA FRAME...");
|
||||
|
||||
FpgaDownloadAndGo(FPGA_BITSTREAM_LF);
|
||||
|
||||
FpgaSendCommand(FPGA_CMD_SET_DIVISOR, 95); //125Khz
|
||||
|
||||
FpgaWriteConfWord(FPGA_MAJOR_MODE_LF_PASSTHRU );
|
||||
|
||||
LED_A_ON();
|
||||
|
||||
// steal this pin from the SSP and use it to control the modulation
|
||||
AT91C_BASE_PIOA->PIO_PER = GPIO_SSC_DOUT;
|
||||
AT91C_BASE_PIOA->PIO_OER = GPIO_SSC_DOUT;
|
||||
|
||||
//initialization of the timer
|
||||
AT91C_BASE_PMC->PMC_PCER |= (0x1 << 12) | (0x1 << 13) | (0x1 << 14);
|
||||
AT91C_BASE_TCB->TCB_BMR = AT91C_TCB_TC0XC0S_NONE | AT91C_TCB_TC1XC1S_TIOA0 | AT91C_TCB_TC2XC2S_NONE;
|
||||
AT91C_BASE_TC0->TC_CCR = AT91C_TC_CLKDIS; // timer disable
|
||||
AT91C_BASE_TC0->TC_CMR = AT91C_TC_CLKS_TIMER_DIV3_CLOCK; //clock at 48/32 MHz
|
||||
AT91C_BASE_TC0->TC_CCR = AT91C_TC_CLKEN;
|
||||
AT91C_BASE_TCB->TCB_BCR = 1;
|
||||
|
||||
|
||||
tempo = AT91C_BASE_TC0->TC_CV;
|
||||
for(u=0;tab[u]!= 0;u+=3){
|
||||
|
||||
|
||||
// modulate antenna
|
||||
HIGH(GPIO_SSC_DOUT);
|
||||
while(tempo != tab[u]){
|
||||
tempo = AT91C_BASE_TC0->TC_CV;
|
||||
}
|
||||
|
||||
// stop modulating antenna
|
||||
LOW(GPIO_SSC_DOUT);
|
||||
while(tempo != tab[u+1]){
|
||||
tempo = AT91C_BASE_TC0->TC_CV;
|
||||
}
|
||||
|
||||
|
||||
// modulate antenna
|
||||
HIGH(GPIO_SSC_DOUT);
|
||||
while(tempo != tab[u+2]){
|
||||
tempo = AT91C_BASE_TC0->TC_CV;
|
||||
}
|
||||
|
||||
|
||||
}
|
||||
|
||||
LED_A_OFF();
|
||||
FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
|
||||
SpinDelay(200);
|
||||
|
||||
|
||||
AT91C_BASE_TC0->TC_CCR = AT91C_TC_CLKDIS; // timer disable
|
||||
DbpString("FINISH !");
|
||||
DbpString("(Could be usefull to send the same trame many times)");
|
||||
LED(0xFFFF, 1000);
|
||||
}
|
||||
|
||||
|
||||
/* Add a byte for building the data frame of PCF7931 tags
|
||||
* @param b : byte to add
|
||||
* @param tab : array of the data frame
|
||||
* @param l : offset on low pulse width
|
||||
* @param p : offset on low pulse positioning
|
||||
*/
|
||||
|
||||
bool AddBytePCF7931(uint8_t byte, uint32_t * tab, int32_t l, int32_t p){
|
||||
|
||||
uint32_t u;
|
||||
for (u=0; u<8; u++)
|
||||
{
|
||||
if (byte&(1<<u)) { //bit à 1
|
||||
if(AddBitPCF7931(1, tab, l, p)==1)return 1;
|
||||
} else { //bit à 0
|
||||
if(AddBitPCF7931(0, tab, l, p)==1)return 1;
|
||||
}
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
/* Add a bits for building the data frame of PCF7931 tags
|
||||
* @param b : bit to add
|
||||
* @param tab : array of the data frame
|
||||
* @param l : offset on low pulse width
|
||||
* @param p : offset on low pulse positioning
|
||||
*/
|
||||
bool AddBitPCF7931(bool b, uint32_t * tab, int32_t l, int32_t p){
|
||||
uint8_t u = 0;
|
||||
|
||||
for(u=0;tab[u]!=0;u+=3){} //we put the cursor at the last value of the array
|
||||
|
||||
|
||||
if(b==1){ //add a bit 1
|
||||
if(u==0) tab[u] = 34*T0_PCF+p;
|
||||
else tab[u] = 34*T0_PCF+tab[u-1]+p;
|
||||
|
||||
tab[u+1] = 6*T0_PCF+tab[u]+l;
|
||||
tab[u+2] = 88*T0_PCF+tab[u+1]-l-p;
|
||||
return 0;
|
||||
}else{ //add a bit 0
|
||||
|
||||
if(u==0) tab[u] = 98*T0_PCF+p;
|
||||
else tab[u] = 98*T0_PCF+tab[u-1]+p;
|
||||
|
||||
tab[u+1] = 6*T0_PCF+tab[u]+l;
|
||||
tab[u+2] = 24*T0_PCF+tab[u+1]-l-p;
|
||||
return 0;
|
||||
}
|
||||
|
||||
|
||||
return 1;
|
||||
}
|
||||
|
||||
/* Add a custom pattern in the data frame
|
||||
* @param a : delay of the first high pulse
|
||||
* @param b : delay of the low pulse
|
||||
* @param c : delay of the last high pulse
|
||||
* @param tab : array of the data frame
|
||||
*/
|
||||
bool AddPatternPCF7931(uint32_t a, uint32_t b, uint32_t c, uint32_t * tab){
|
||||
uint32_t u = 0;
|
||||
for(u=0;tab[u]!=0;u+=3){} //we put the cursor at the last value of the array
|
||||
|
||||
if(u==0) tab[u] = a;
|
||||
else tab[u] = a + tab[u-1];
|
||||
|
||||
tab[u+1] = b+tab[u];
|
||||
tab[u+2] = c+tab[u+1];
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
|
@ -1,15 +1,15 @@
|
|||
#ifndef __MIFAREDESFIRE_H
|
||||
#define __MIFAREDESFIRE_H
|
||||
|
||||
#include "../include/proxmark3.h"
|
||||
#include "proxmark3.h"
|
||||
#include "apps.h"
|
||||
#include "util.h"
|
||||
#include "string.h"
|
||||
|
||||
#include "../common/iso14443crc.h"
|
||||
#include "iso14443crc.h"
|
||||
#include "iso14443a.h"
|
||||
#include "desfire_key.h"
|
||||
#include "mifareutil.h"
|
||||
#include "../include/common.h"
|
||||
#include "common.h"
|
||||
|
||||
#endif
|
||||
|
|
|
|||
523
armsrc/pcf7931.c
Normal file
523
armsrc/pcf7931.c
Normal file
|
|
@ -0,0 +1,523 @@
|
|||
#include "pcf7931.h"
|
||||
|
||||
#define T0_PCF 8 //period for the pcf7931 in us
|
||||
#define ALLOC 16
|
||||
|
||||
#define abs(x) ( ((x)<0) ? -(x) : (x) )
|
||||
#define max(x,y) ( x<y ? y:x)
|
||||
|
||||
int DemodPCF7931(uint8_t **outBlocks) {
|
||||
|
||||
uint8_t bits[256] = {0x00};
|
||||
uint8_t blocks[8][16];
|
||||
uint8_t *dest = BigBuf_get_addr();
|
||||
|
||||
int GraphTraceLen = BigBuf_max_traceLen();
|
||||
if ( GraphTraceLen > 18000 )
|
||||
GraphTraceLen = 18000;
|
||||
|
||||
|
||||
int i, j, lastval, bitidx, half_switch;
|
||||
int clock = 64;
|
||||
int tolerance = clock / 8;
|
||||
int pmc, block_done;
|
||||
int lc, warnings = 0;
|
||||
int num_blocks = 0;
|
||||
int lmin=128, lmax=128;
|
||||
uint8_t dir;
|
||||
|
||||
LFSetupFPGAForADC(95, true);
|
||||
DoAcquisition_default(0, true);
|
||||
|
||||
lmin = 64;
|
||||
lmax = 192;
|
||||
|
||||
i = 2;
|
||||
|
||||
/* Find first local max/min */
|
||||
if(dest[1] > dest[0]) {
|
||||
while(i < GraphTraceLen) {
|
||||
if( !(dest[i] > dest[i-1]) && dest[i] > lmax)
|
||||
break;
|
||||
i++;
|
||||
}
|
||||
dir = 0;
|
||||
}
|
||||
else {
|
||||
while(i < GraphTraceLen) {
|
||||
if( !(dest[i] < dest[i-1]) && dest[i] < lmin)
|
||||
break;
|
||||
i++;
|
||||
}
|
||||
dir = 1;
|
||||
}
|
||||
|
||||
lastval = i++;
|
||||
half_switch = 0;
|
||||
pmc = 0;
|
||||
block_done = 0;
|
||||
|
||||
for (bitidx = 0; i < GraphTraceLen; i++)
|
||||
{
|
||||
if ( (dest[i-1] > dest[i] && dir == 1 && dest[i] > lmax) || (dest[i-1] < dest[i] && dir == 0 && dest[i] < lmin))
|
||||
{
|
||||
lc = i - lastval;
|
||||
lastval = i;
|
||||
|
||||
// Switch depending on lc length:
|
||||
// Tolerance is 1/8 of clock rate (arbitrary)
|
||||
if (abs(lc-clock/4) < tolerance) {
|
||||
// 16T0
|
||||
if((i - pmc) == lc) { /* 16T0 was previous one */
|
||||
/* It's a PMC ! */
|
||||
i += (128+127+16+32+33+16)-1;
|
||||
lastval = i;
|
||||
pmc = 0;
|
||||
block_done = 1;
|
||||
}
|
||||
else {
|
||||
pmc = i;
|
||||
}
|
||||
} else if (abs(lc-clock/2) < tolerance) {
|
||||
// 32TO
|
||||
if((i - pmc) == lc) { /* 16T0 was previous one */
|
||||
/* It's a PMC ! */
|
||||
i += (128+127+16+32+33)-1;
|
||||
lastval = i;
|
||||
pmc = 0;
|
||||
block_done = 1;
|
||||
}
|
||||
else if(half_switch == 1) {
|
||||
bits[bitidx++] = 0;
|
||||
half_switch = 0;
|
||||
}
|
||||
else
|
||||
half_switch++;
|
||||
} else if (abs(lc-clock) < tolerance) {
|
||||
// 64TO
|
||||
bits[bitidx++] = 1;
|
||||
} else {
|
||||
// Error
|
||||
warnings++;
|
||||
if (warnings > 10)
|
||||
{
|
||||
Dbprintf("Error: too many detection errors, aborting.");
|
||||
return 0;
|
||||
}
|
||||
}
|
||||
|
||||
if(block_done == 1) {
|
||||
if(bitidx == 128) {
|
||||
for(j=0; j<16; j++) {
|
||||
blocks[num_blocks][j] = 128*bits[j*8+7]+
|
||||
64*bits[j*8+6]+
|
||||
32*bits[j*8+5]+
|
||||
16*bits[j*8+4]+
|
||||
8*bits[j*8+3]+
|
||||
4*bits[j*8+2]+
|
||||
2*bits[j*8+1]+
|
||||
bits[j*8];
|
||||
|
||||
}
|
||||
num_blocks++;
|
||||
}
|
||||
bitidx = 0;
|
||||
block_done = 0;
|
||||
half_switch = 0;
|
||||
}
|
||||
if(i < GraphTraceLen)
|
||||
dir =(dest[i-1] > dest[i]) ? 0 : 1;
|
||||
}
|
||||
if(bitidx==255)
|
||||
bitidx=0;
|
||||
warnings = 0;
|
||||
if(num_blocks == 4) break;
|
||||
}
|
||||
memcpy(outBlocks, blocks, 16*num_blocks);
|
||||
return num_blocks;
|
||||
}
|
||||
|
||||
int IsBlock0PCF7931(uint8_t *Block) {
|
||||
// Assume RFU means 0 :)
|
||||
if((memcmp(Block, "\x00\x00\x00\x00\x00\x00\x00\x01", 8) == 0) && memcmp(Block+9, "\x00\x00\x00\x00\x00\x00\x00", 7) == 0) // PAC enabled
|
||||
return 1;
|
||||
if((memcmp(Block+9, "\x00\x00\x00\x00\x00\x00\x00", 7) == 0) && Block[7] == 0) // PAC disabled, can it *really* happen ?
|
||||
return 1;
|
||||
return 0;
|
||||
}
|
||||
|
||||
int IsBlock1PCF7931(uint8_t *Block) {
|
||||
// Assume RFU means 0 :)
|
||||
if(Block[10] == 0 && Block[11] == 0 && Block[12] == 0 && Block[13] == 0)
|
||||
if((Block[14] & 0x7f) <= 9 && Block[15] <= 9)
|
||||
return 1;
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
void ReadPCF7931() {
|
||||
uint8_t Blocks[8][17];
|
||||
uint8_t tmpBlocks[4][16];
|
||||
int i, j, ind, ind2, n;
|
||||
int num_blocks = 0;
|
||||
int max_blocks = 8;
|
||||
int ident = 0;
|
||||
int error = 0;
|
||||
int tries = 0;
|
||||
|
||||
memset(Blocks, 0, 8*17*sizeof(uint8_t));
|
||||
|
||||
do {
|
||||
memset(tmpBlocks, 0, 4*16*sizeof(uint8_t));
|
||||
n = DemodPCF7931((uint8_t**)tmpBlocks);
|
||||
if(!n)
|
||||
error++;
|
||||
if(error==10 && num_blocks == 0) {
|
||||
Dbprintf("Error, no tag or bad tag");
|
||||
return;
|
||||
}
|
||||
else if (tries==20 || error==10) {
|
||||
Dbprintf("Error reading the tag");
|
||||
Dbprintf("Here is the partial content");
|
||||
goto end;
|
||||
}
|
||||
|
||||
for(i=0; i<n; i++)
|
||||
Dbprintf("(dbg) %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x",
|
||||
tmpBlocks[i][0], tmpBlocks[i][1], tmpBlocks[i][2], tmpBlocks[i][3], tmpBlocks[i][4], tmpBlocks[i][5], tmpBlocks[i][6], tmpBlocks[i][7],
|
||||
tmpBlocks[i][8], tmpBlocks[i][9], tmpBlocks[i][10], tmpBlocks[i][11], tmpBlocks[i][12], tmpBlocks[i][13], tmpBlocks[i][14], tmpBlocks[i][15]);
|
||||
if(!ident) {
|
||||
for(i=0; i<n; i++) {
|
||||
if(IsBlock0PCF7931(tmpBlocks[i])) {
|
||||
// Found block 0 ?
|
||||
if(i < n-1 && IsBlock1PCF7931(tmpBlocks[i+1])) {
|
||||
// Found block 1!
|
||||
// \o/
|
||||
ident = 1;
|
||||
memcpy(Blocks[0], tmpBlocks[i], 16);
|
||||
Blocks[0][ALLOC] = 1;
|
||||
memcpy(Blocks[1], tmpBlocks[i+1], 16);
|
||||
Blocks[1][ALLOC] = 1;
|
||||
max_blocks = max((Blocks[1][14] & 0x7f), Blocks[1][15]) + 1;
|
||||
// Debug print
|
||||
Dbprintf("(dbg) Max blocks: %d", max_blocks);
|
||||
num_blocks = 2;
|
||||
// Handle following blocks
|
||||
for(j=i+2, ind2=2; j!=i; j++, ind2++, num_blocks++) {
|
||||
if(j==n) j=0;
|
||||
if(j==i) break;
|
||||
memcpy(Blocks[ind2], tmpBlocks[j], 16);
|
||||
Blocks[ind2][ALLOC] = 1;
|
||||
}
|
||||
break;
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
else {
|
||||
for(i=0; i<n; i++) { // Look for identical block in known blocks
|
||||
if(memcmp(tmpBlocks[i], "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00", 16)) { // Block is not full of 00
|
||||
for(j=0; j<max_blocks; j++) {
|
||||
if(Blocks[j][ALLOC] == 1 && !memcmp(tmpBlocks[i], Blocks[j], 16)) {
|
||||
// Found an identical block
|
||||
for(ind=i-1,ind2=j-1; ind >= 0; ind--,ind2--) {
|
||||
if(ind2 < 0)
|
||||
ind2 = max_blocks;
|
||||
if(!Blocks[ind2][ALLOC]) { // Block ind2 not already found
|
||||
// Dbprintf("Tmp %d -> Block %d", ind, ind2);
|
||||
memcpy(Blocks[ind2], tmpBlocks[ind], 16);
|
||||
Blocks[ind2][ALLOC] = 1;
|
||||
num_blocks++;
|
||||
if(num_blocks == max_blocks) goto end;
|
||||
}
|
||||
}
|
||||
for(ind=i+1,ind2=j+1; ind < n; ind++,ind2++) {
|
||||
if(ind2 > max_blocks)
|
||||
ind2 = 0;
|
||||
if(!Blocks[ind2][ALLOC]) { // Block ind2 not already found
|
||||
// Dbprintf("Tmp %d -> Block %d", ind, ind2);
|
||||
memcpy(Blocks[ind2], tmpBlocks[ind], 16);
|
||||
Blocks[ind2][ALLOC] = 1;
|
||||
num_blocks++;
|
||||
if(num_blocks == max_blocks) goto end;
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
tries++;
|
||||
if (BUTTON_PRESS()) return;
|
||||
} while (num_blocks != max_blocks);
|
||||
end:
|
||||
Dbprintf("-----------------------------------------");
|
||||
Dbprintf("Memory content:");
|
||||
Dbprintf("-----------------------------------------");
|
||||
for(i=0; i<max_blocks; i++) {
|
||||
if(Blocks[i][ALLOC]==1)
|
||||
Dbprintf("%02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x",
|
||||
Blocks[i][0], Blocks[i][1], Blocks[i][2], Blocks[i][3], Blocks[i][4], Blocks[i][5], Blocks[i][6], Blocks[i][7],
|
||||
Blocks[i][8], Blocks[i][9], Blocks[i][10], Blocks[i][11], Blocks[i][12], Blocks[i][13], Blocks[i][14], Blocks[i][15]);
|
||||
else
|
||||
Dbprintf("<missing block %d>", i);
|
||||
}
|
||||
Dbprintf("-----------------------------------------");
|
||||
|
||||
return ;
|
||||
}
|
||||
|
||||
|
||||
/* Write on a byte of a PCF7931 tag
|
||||
* @param address : address of the block to write
|
||||
@param byte : address of the byte to write
|
||||
@param data : data to write
|
||||
*/
|
||||
void WritePCF7931(uint8_t pass1, uint8_t pass2, uint8_t pass3, uint8_t pass4, uint8_t pass5, uint8_t pass6, uint8_t pass7, uint16_t init_delay, int32_t l, int32_t p, uint8_t address, uint8_t byte, uint8_t data)
|
||||
{
|
||||
|
||||
uint32_t tab[1024]={0}; // data times frame
|
||||
uint32_t u = 0;
|
||||
uint8_t parity = 0;
|
||||
bool comp = 0;
|
||||
|
||||
//BUILD OF THE DATA FRAME
|
||||
|
||||
//alimentation of the tag (time for initializing)
|
||||
AddPatternPCF7931(init_delay, 0, 8192/2*T0_PCF, tab);
|
||||
|
||||
//PMC
|
||||
Dbprintf("Initialization delay : %d us", init_delay);
|
||||
AddPatternPCF7931(8192/2*T0_PCF + 319*T0_PCF+70, 3*T0_PCF, 29*T0_PCF, tab);
|
||||
|
||||
Dbprintf("Offsets : %d us on the low pulses width, %d us on the low pulses positions", l, p);
|
||||
|
||||
//password indication bit
|
||||
AddBitPCF7931(1, tab, l, p);
|
||||
|
||||
|
||||
//password (on 56 bits)
|
||||
Dbprintf("Password (LSB first on each byte) : %02x %02x %02x %02x %02x %02x %02x", pass1,pass2,pass3,pass4,pass5,pass6,pass7);
|
||||
AddBytePCF7931(pass1, tab, l, p);
|
||||
AddBytePCF7931(pass2, tab, l, p);
|
||||
AddBytePCF7931(pass3, tab, l, p);
|
||||
AddBytePCF7931(pass4, tab, l, p);
|
||||
AddBytePCF7931(pass5, tab, l, p);
|
||||
AddBytePCF7931(pass6, tab, l, p);
|
||||
AddBytePCF7931(pass7, tab, l, p);
|
||||
|
||||
|
||||
//programming mode (0 or 1)
|
||||
AddBitPCF7931(0, tab, l, p);
|
||||
|
||||
//block adress on 6 bits
|
||||
Dbprintf("Block address : %02x", address);
|
||||
for (u=0; u<6; u++)
|
||||
{
|
||||
if (address&(1<<u)) { // bit 1
|
||||
parity++;
|
||||
AddBitPCF7931(1, tab, l, p);
|
||||
} else{ // bit 0
|
||||
AddBitPCF7931(0, tab, l, p);
|
||||
}
|
||||
}
|
||||
|
||||
//byte address on 4 bits
|
||||
Dbprintf("Byte address : %02x", byte);
|
||||
for (u=0; u<4; u++)
|
||||
{
|
||||
if (byte&(1<<u)) { // bit 1
|
||||
parity++;
|
||||
AddBitPCF7931(1, tab, l, p);
|
||||
} else{ // bit 0
|
||||
AddBitPCF7931(0, tab, l, p);
|
||||
}
|
||||
}
|
||||
|
||||
//data on 8 bits
|
||||
Dbprintf("Data : %02x", data);
|
||||
for (u=0; u<8; u++)
|
||||
{
|
||||
if (data&(1<<u)) { // bit 1
|
||||
parity++;
|
||||
AddBitPCF7931(1, tab, l, p);
|
||||
} else{ //bit 0
|
||||
AddBitPCF7931(0, tab, l, p);
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
//parity bit
|
||||
if((parity%2)==0){
|
||||
AddBitPCF7931(0, tab, l, p); //even parity
|
||||
}else{
|
||||
AddBitPCF7931(1, tab, l, p);//odd parity
|
||||
}
|
||||
|
||||
//time access memory
|
||||
AddPatternPCF7931(5120+2680, 0, 0, tab);
|
||||
|
||||
//conversion of the scale time
|
||||
for(u=0;u<500;u++){
|
||||
tab[u]=(tab[u] * 3)/2;
|
||||
}
|
||||
|
||||
|
||||
//compennsation of the counter reload
|
||||
while (!comp){
|
||||
comp = 1;
|
||||
for(u=0;tab[u]!=0;u++){
|
||||
if(tab[u] > 0xFFFF){
|
||||
tab[u] -= 0xFFFF;
|
||||
comp = 0;
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
SendCmdPCF7931(tab);
|
||||
}
|
||||
|
||||
|
||||
|
||||
/* Send a trame to a PCF7931 tags
|
||||
* @param tab : array of the data frame
|
||||
*/
|
||||
|
||||
void SendCmdPCF7931(uint32_t * tab){
|
||||
uint16_t u=0;
|
||||
uint16_t tempo=0;
|
||||
|
||||
Dbprintf("SENDING DATA FRAME...");
|
||||
|
||||
FpgaDownloadAndGo(FPGA_BITSTREAM_LF);
|
||||
|
||||
FpgaSendCommand(FPGA_CMD_SET_DIVISOR, 95); //125Khz
|
||||
|
||||
FpgaWriteConfWord(FPGA_MAJOR_MODE_LF_PASSTHRU );
|
||||
|
||||
LED_A_ON();
|
||||
|
||||
// steal this pin from the SSP and use it to control the modulation
|
||||
AT91C_BASE_PIOA->PIO_PER = GPIO_SSC_DOUT;
|
||||
AT91C_BASE_PIOA->PIO_OER = GPIO_SSC_DOUT;
|
||||
|
||||
//initialization of the timer
|
||||
AT91C_BASE_PMC->PMC_PCER |= (0x1 << 12) | (0x1 << 13) | (0x1 << 14);
|
||||
AT91C_BASE_TCB->TCB_BMR = AT91C_TCB_TC0XC0S_NONE | AT91C_TCB_TC1XC1S_TIOA0 | AT91C_TCB_TC2XC2S_NONE;
|
||||
AT91C_BASE_TC0->TC_CCR = AT91C_TC_CLKDIS; // timer disable
|
||||
AT91C_BASE_TC0->TC_CMR = AT91C_TC_CLKS_TIMER_DIV3_CLOCK; //clock at 48/32 MHz
|
||||
AT91C_BASE_TC0->TC_CCR = AT91C_TC_CLKEN;
|
||||
AT91C_BASE_TCB->TCB_BCR = 1;
|
||||
|
||||
|
||||
tempo = AT91C_BASE_TC0->TC_CV;
|
||||
for(u=0;tab[u]!= 0;u+=3){
|
||||
|
||||
|
||||
// modulate antenna
|
||||
HIGH(GPIO_SSC_DOUT);
|
||||
while(tempo != tab[u]){
|
||||
tempo = AT91C_BASE_TC0->TC_CV;
|
||||
}
|
||||
|
||||
// stop modulating antenna
|
||||
LOW(GPIO_SSC_DOUT);
|
||||
while(tempo != tab[u+1]){
|
||||
tempo = AT91C_BASE_TC0->TC_CV;
|
||||
}
|
||||
|
||||
|
||||
// modulate antenna
|
||||
HIGH(GPIO_SSC_DOUT);
|
||||
while(tempo != tab[u+2]){
|
||||
tempo = AT91C_BASE_TC0->TC_CV;
|
||||
}
|
||||
|
||||
|
||||
}
|
||||
|
||||
LED_A_OFF();
|
||||
FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
|
||||
SpinDelay(200);
|
||||
|
||||
|
||||
AT91C_BASE_TC0->TC_CCR = AT91C_TC_CLKDIS; // timer disable
|
||||
DbpString("FINISH !");
|
||||
DbpString("(Could be usefull to send the same trame many times)");
|
||||
LED(0xFFFF, 1000);
|
||||
}
|
||||
|
||||
|
||||
/* Add a byte for building the data frame of PCF7931 tags
|
||||
* @param b : byte to add
|
||||
* @param tab : array of the data frame
|
||||
* @param l : offset on low pulse width
|
||||
* @param p : offset on low pulse positioning
|
||||
*/
|
||||
|
||||
bool AddBytePCF7931(uint8_t byte, uint32_t * tab, int32_t l, int32_t p){
|
||||
|
||||
uint32_t u;
|
||||
for (u=0; u<8; u++)
|
||||
{
|
||||
if (byte&(1<<u)) { //bit à 1
|
||||
if(AddBitPCF7931(1, tab, l, p)==1)return 1;
|
||||
} else { //bit à 0
|
||||
if(AddBitPCF7931(0, tab, l, p)==1)return 1;
|
||||
}
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
/* Add a bits for building the data frame of PCF7931 tags
|
||||
* @param b : bit to add
|
||||
* @param tab : array of the data frame
|
||||
* @param l : offset on low pulse width
|
||||
* @param p : offset on low pulse positioning
|
||||
*/
|
||||
bool AddBitPCF7931(bool b, uint32_t * tab, int32_t l, int32_t p){
|
||||
uint8_t u = 0;
|
||||
|
||||
for(u=0;tab[u]!=0;u+=3){} //we put the cursor at the last value of the array
|
||||
|
||||
|
||||
if(b==1){ //add a bit 1
|
||||
if(u==0) tab[u] = 34*T0_PCF+p;
|
||||
else tab[u] = 34*T0_PCF+tab[u-1]+p;
|
||||
|
||||
tab[u+1] = 6*T0_PCF+tab[u]+l;
|
||||
tab[u+2] = 88*T0_PCF+tab[u+1]-l-p;
|
||||
return 0;
|
||||
}else{ //add a bit 0
|
||||
|
||||
if(u==0) tab[u] = 98*T0_PCF+p;
|
||||
else tab[u] = 98*T0_PCF+tab[u-1]+p;
|
||||
|
||||
tab[u+1] = 6*T0_PCF+tab[u]+l;
|
||||
tab[u+2] = 24*T0_PCF+tab[u+1]-l-p;
|
||||
return 0;
|
||||
}
|
||||
|
||||
|
||||
return 1;
|
||||
}
|
||||
|
||||
/* Add a custom pattern in the data frame
|
||||
* @param a : delay of the first high pulse
|
||||
* @param b : delay of the low pulse
|
||||
* @param c : delay of the last high pulse
|
||||
* @param tab : array of the data frame
|
||||
*/
|
||||
bool AddPatternPCF7931(uint32_t a, uint32_t b, uint32_t c, uint32_t * tab){
|
||||
uint32_t u = 0;
|
||||
for(u=0;tab[u]!=0;u+=3){} //we put the cursor at the last value of the array
|
||||
|
||||
if(u==0) tab[u] = a;
|
||||
else tab[u] = a + tab[u-1];
|
||||
|
||||
tab[u+1] = b+tab[u];
|
||||
tab[u+2] = c+tab[u+1];
|
||||
|
||||
return 0;
|
||||
}
|
||||
8
armsrc/pcf7931.h
Normal file
8
armsrc/pcf7931.h
Normal file
|
|
@ -0,0 +1,8 @@
|
|||
#ifndef __PCF7931_H
|
||||
#define __PCF7931_H
|
||||
|
||||
#include "proxmark3.h"
|
||||
#include "apps.h"
|
||||
#include "lfsampling.h"
|
||||
|
||||
#endif
|
||||
Loading…
Add table
Add a link
Reference in a new issue