[proxmark3-svn] / client / cmdlfem4x.c

//-----------------------------------------------------------------------------
// Copyright (C) 2010 iZsh <izsh at fail0verflow.com>
//
// This code is licensed to you under the terms of the GNU GPL, version 2 or,
// at your option, any later version. See the LICENSE.txt file for the text of
// the license.
//-----------------------------------------------------------------------------
// Low frequency EM4x commands
//-----------------------------------------------------------------------------

#include <stdio.h>
#include <string.h>
#include <inttypes.h>
#include "proxmark3.h"
#include "ui.h"
#include "util.h"
#include "graph.h"
#include "cmdparser.h"
#include "cmddata.h"
#include "cmdlf.h"
#include "cmdlfem4x.h"
#include "lfdemod.h"

#define llx PRIx64

char *global_em410xId;

static int CmdHelp(const char *Cmd);

int CmdEMdemodASK(const char *Cmd)
{
	char cmdp = param_getchar(Cmd, 0);
	int findone = (cmdp == '1') ? 1 : 0;
	UsbCommand c={CMD_EM410X_DEMOD};
	c.arg[0]=findone;
	SendCommand(&c);
	return 0;
}

/* Read the ID of an EM410x tag.
 * Format:
 *   1111 1111 1           <-- standard non-repeatable header
 *   XXXX [row parity bit] <-- 10 rows of 5 bits for our 40 bit tag ID
 *   ....
 *   CCCC                  <-- each bit here is parity for the 10 bits above in corresponding column
 *   0                     <-- stop bit, end of tag
 */
int CmdEM410xRead(const char *Cmd)
{
	uint32_t hi=0;
	uint64_t lo=0;

	if(!AskEm410xDemod("", &hi, &lo, false)) return 0;
	PrintAndLog("EM410x pattern found: ");
	printEM410x(hi, lo);
	if (hi){
		PrintAndLog ("EM410x XL pattern found");
		return 0;
	}
	char id[12] = {0x00};
	sprintf(id, "%010llx",lo);
	
	global_em410xId = id;
	return 1;
}

// emulate an EM410X tag
int CmdEM410xSim(const char *Cmd)
{
	int i, n, j, binary[4], parity[4];

	char cmdp = param_getchar(Cmd, 0);
	uint8_t uid[5] = {0x00};

	if (cmdp == 'h' || cmdp == 'H') {
		PrintAndLog("Usage:  lf em4x em410xsim <UID> <clock>");
		PrintAndLog("");
		PrintAndLog("     sample: lf em4x em410xsim 0F0368568B");
		return 0;
	}
	/* clock is 64 in EM410x tags */
	uint8_t clock = 64;

	if (param_gethex(Cmd, 0, uid, 10)) {
		PrintAndLog("UID must include 10 HEX symbols");
		return 0;
	}
	param_getdec(Cmd, 1, &clock);
	
	PrintAndLog("Starting simulating UID %02X%02X%02X%02X%02X  clock: %d", uid[0],uid[1],uid[2],uid[3],uid[4],clock);
	PrintAndLog("Press pm3-button to about simulation");


	/* clear our graph */
	ClearGraph(0);

		/* write 9 start bits */
		for (i = 0; i < 9; i++)
			AppendGraph(0, clock, 1);

		/* for each hex char */
		parity[0] = parity[1] = parity[2] = parity[3] = 0;
		for (i = 0; i < 10; i++)
		{
			/* read each hex char */
			sscanf(&Cmd[i], "%1x", &n);
			for (j = 3; j >= 0; j--, n/= 2)
				binary[j] = n % 2;

			/* append each bit */
			AppendGraph(0, clock, binary[0]);
			AppendGraph(0, clock, binary[1]);
			AppendGraph(0, clock, binary[2]);
			AppendGraph(0, clock, binary[3]);

			/* append parity bit */
			AppendGraph(0, clock, binary[0] ^ binary[1] ^ binary[2] ^ binary[3]);

			/* keep track of column parity */
			parity[0] ^= binary[0];
			parity[1] ^= binary[1];
			parity[2] ^= binary[2];
			parity[3] ^= binary[3];
		}

		/* parity columns */
		AppendGraph(0, clock, parity[0]);
		AppendGraph(0, clock, parity[1]);
		AppendGraph(0, clock, parity[2]);
		AppendGraph(0, clock, parity[3]);

		/* stop bit */
	AppendGraph(1, clock, 0);
 
	CmdLFSim("0"); //240 start_gap.
	return 0;
}

/* Function is equivalent of lf read + data samples + em410xread
 * looped until an EM410x tag is detected 
 * 
 * Why is CmdSamples("16000")?
 *  TBD: Auto-grow sample size based on detected sample rate.  IE: If the
 *       rate gets lower, then grow the number of samples
 *  Changed by martin, 4000 x 4 = 16000, 
 *  see http://www.proxmark.org/forum/viewtopic.php?pid=7235#p7235
*/
int CmdEM410xWatch(const char *Cmd)
{
	do {
		if (ukbhit()) {
			printf("\naborted via keyboard!\n");
			break;
		}
		
		CmdLFRead("s");
		getSamples("8201",true); //capture enough to get 2 complete preambles (4096*2+9)	
	} while (!CmdEM410xRead(""));

	return 0;
}

//currently only supports manchester modulations
int CmdEM410xWatchnSpoof(const char *Cmd)
{
	CmdEM410xWatch(Cmd);
	PrintAndLog("# Replaying captured ID: %s",global_em410xId);
	CmdLFaskSim("");
	return 0;
}

int CmdEM410xWrite(const char *Cmd)
{
	uint64_t id = 0xFFFFFFFFFFFFFFFF; // invalid id value
	int card = 0xFF; // invalid card value
	uint32_t clock = 0; // invalid clock value

	sscanf(Cmd, "%" PRIx64 " %d %d", &id, &card, &clock);

	// Check ID
	if (id == 0xFFFFFFFFFFFFFFFF) {
		PrintAndLog("Error! ID is required.\n");
		return 0;
	}
	if (id >= 0x10000000000) {
		PrintAndLog("Error! Given EM410x ID is longer than 40 bits.\n");
		return 0;
	}

	// Check Card
	if (card == 0xFF) {
		PrintAndLog("Error! Card type required.\n");
		return 0;
	}
	if (card < 0) {
		PrintAndLog("Error! Bad card type selected.\n");
		return 0;
	}

	// Check Clock
		// Default: 64
	if (clock == 0)
		clock = 64;

	// Allowed clock rates: 16, 32, 40 and 64
	if ((clock != 16) && (clock != 32) && (clock != 64) && (clock != 40)) {
		PrintAndLog("Error! Clock rate %d not valid. Supported clock rates are 16, 32, 40 and 64.\n", clock);
		return 0;
	}

	if (card == 1) {
		PrintAndLog("Writing %s tag with UID 0x%010" PRIx64 " (clock rate: %d)", "T55x7", id, clock);
		// NOTE: We really should pass the clock in as a separate argument, but to
		//   provide for backwards-compatibility for older firmware, and to avoid
		//   having to add another argument to CMD_EM410X_WRITE_TAG, we just store
		//   the clock rate in bits 8-15 of the card value
		card = (card & 0xFF) | ((clock << 8) & 0xFF00);
	}	else if (card == 0) {
		PrintAndLog("Writing %s tag with UID 0x%010" PRIx64, "T5555", id, clock);
		card = (card & 0xFF) | ((clock << 8) & 0xFF00);
	} else {
		PrintAndLog("Error! Bad card type selected.\n");
		return 0;
	}

	UsbCommand c = {CMD_EM410X_WRITE_TAG, {card, (uint32_t)(id >> 32), (uint32_t)id}};
	SendCommand(&c);
	return 0;
}

bool EM_EndParityTest(uint8_t *BitStream, size_t size, uint8_t rows, uint8_t cols, uint8_t pType)
{
	if (rows*cols>size) return false;
	uint8_t colP=0;
	//assume last col is a parity and do not test
	for (uint8_t colNum = 0; colNum < cols-1; colNum++) {
		for (uint8_t rowNum = 0; rowNum < rows; rowNum++) {
			colP ^= BitStream[(rowNum*cols)+colNum];
		}
		if (colP != pType) return false;
	}
	return true;
}

bool EM_ByteParityTest(uint8_t *BitStream, size_t size, uint8_t rows, uint8_t cols, uint8_t pType)
{
	if (rows*cols>size) return false;
	uint8_t rowP=0;
	//assume last row is a parity row and do not test
	for (uint8_t rowNum = 0; rowNum < rows-1; rowNum++) {
		for (uint8_t colNum = 0; colNum < cols; colNum++) {
			rowP ^= BitStream[(rowNum*cols)+colNum];
		}
		if (rowP != pType) return false;
	}
	return true;
}

uint32_t OutputEM4x50_Block(uint8_t *BitStream, size_t size, bool verbose, bool pTest)
{
	if (size<45) return 0;
	uint32_t code = bytebits_to_byte(BitStream,8);
	code = code<<8 | bytebits_to_byte(BitStream+9,8);
	code = code<<8 | bytebits_to_byte(BitStream+18,8);
	code = code<<8 | bytebits_to_byte(BitStream+27,8);
	if (verbose || g_debugMode){
		for (uint8_t i = 0; i<5; i++){
			if (i == 4) PrintAndLog(""); //parity byte spacer
			PrintAndLog("%d%d%d%d%d%d%d%d %d -> 0x%02x",
			    BitStream[i*9],
			    BitStream[i*9+1],
			    BitStream[i*9+2],
			    BitStream[i*9+3],
			    BitStream[i*9+4],
			    BitStream[i*9+5],
			    BitStream[i*9+6],
			    BitStream[i*9+7],
			    BitStream[i*9+8],
			    bytebits_to_byte(BitStream+i*9,8)
			);
		}
		if (pTest)
			PrintAndLog("Parity Passed");
		else
			PrintAndLog("Parity Failed");
	}
	return code;
}
/* Read the transmitted data of an EM4x50 tag
 * Format:
 *
 *  XXXXXXXX [row parity bit (even)] <- 8 bits plus parity
 *  XXXXXXXX [row parity bit (even)] <- 8 bits plus parity
 *  XXXXXXXX [row parity bit (even)] <- 8 bits plus parity
 *  XXXXXXXX [row parity bit (even)] <- 8 bits plus parity
 *  CCCCCCCC                         <- column parity bits
 *  0                                <- stop bit
 *  LW                               <- Listen Window
 *
 * This pattern repeats for every block of data being transmitted.
 * Transmission starts with two Listen Windows (LW - a modulated
 * pattern of 320 cycles each (32/32/128/64/64)).
 *
 * Note that this data may or may not be the UID. It is whatever data
 * is stored in the blocks defined in the control word First and Last
 * Word Read values. UID is stored in block 32.
 */
 //completed by Marshmellow
int EM4x50Read(const char *Cmd, bool verbose)
{
	uint8_t fndClk[] = {8,16,32,40,50,64,128};
	int clk = 0; 
	int invert = 0;
	int tol = 0;
	int i, j, startblock, skip, block, start, end, low, high, minClk;
	bool complete = false;
	int tmpbuff[MAX_GRAPH_TRACE_LEN / 64];
	uint32_t Code[6];
	char tmp[6];
	char tmp2[20];
	int phaseoff;
	high = low = 0;
	memset(tmpbuff, 0, MAX_GRAPH_TRACE_LEN / 64);

	// get user entry if any
	sscanf(Cmd, "%i %i", &clk, &invert);
	
	// save GraphBuffer - to restore it later	
	save_restoreGB(1);

	// first get high and low values
	for (i = 0; i < GraphTraceLen; i++) {
		if (GraphBuffer[i] > high)
			high = GraphBuffer[i];
		else if (GraphBuffer[i] < low)
			low = GraphBuffer[i];
	}

	i = 0;
	j = 0;
	minClk = 255;
	// get to first full low to prime loop and skip incomplete first pulse
	while ((GraphBuffer[i] < high) && (i < GraphTraceLen))
		++i;
	while ((GraphBuffer[i] > low) && (i < GraphTraceLen))
		++i;
	skip = i;

	// populate tmpbuff buffer with pulse lengths
	while (i < GraphTraceLen) {
		// measure from low to low
		while ((GraphBuffer[i] > low) && (i < GraphTraceLen))
			++i;
		start= i;
		while ((GraphBuffer[i] < high) && (i < GraphTraceLen))
			++i;
		while ((GraphBuffer[i] > low) && (i < GraphTraceLen))
			++i;
		if (j>=(MAX_GRAPH_TRACE_LEN/64)) {
			break;
		}
		tmpbuff[j++]= i - start;
		if (i-start < minClk && i < GraphTraceLen) {
			minClk = i - start;
		}
	}
	// set clock
	if (!clk) {
		for (uint8_t clkCnt = 0; clkCnt<7; clkCnt++) {
			tol = fndClk[clkCnt]/8;
			if (minClk >= fndClk[clkCnt]-tol && minClk <= fndClk[clkCnt]+1) { 
				clk=fndClk[clkCnt];
				break;
			}
		}
		if (!clk) return 0;
	} else tol = clk/8;

	// look for data start - should be 2 pairs of LW (pulses of clk*3,clk*2)
	start = -1;
	for (i= 0; i < j - 4 ; ++i) {
		skip += tmpbuff[i];
		if (tmpbuff[i] >= clk*3-tol && tmpbuff[i] <= clk*3+tol)  //3 clocks
			if (tmpbuff[i+1] >= clk*2-tol && tmpbuff[i+1] <= clk*2+tol)  //2 clocks
				if (tmpbuff[i+2] >= clk*3-tol && tmpbuff[i+2] <= clk*3+tol) //3 clocks
					if (tmpbuff[i+3] >= clk-tol)  //1.5 to 2 clocks - depends on bit following
					{
						start= i + 4;
						break;
					}
	}
	startblock = i + 4;

	// skip over the remainder of LW
	skip += tmpbuff[i+1] + tmpbuff[i+2] + clk;
	if (tmpbuff[i+3]>clk) 
		phaseoff = tmpbuff[i+3]-clk;
	else
		phaseoff = 0;
	// now do it again to find the end
	end = skip;
	for (i += 3; i < j - 4 ; ++i) {
		end += tmpbuff[i];
		if (tmpbuff[i] >= clk*3-tol && tmpbuff[i] <= clk*3+tol)  //3 clocks
			if (tmpbuff[i+1] >= clk*2-tol && tmpbuff[i+1] <= clk*2+tol)  //2 clocks
				if (tmpbuff[i+2] >= clk*3-tol && tmpbuff[i+2] <= clk*3+tol) //3 clocks
					if (tmpbuff[i+3] >= clk-tol)  //1.5 to 2 clocks - depends on bit following
					{
						complete= true;
						break;
					}
	}
	end = i;
	// report back
	if (verbose || g_debugMode) {
		if (start >= 0) {
			PrintAndLog("\nNote: one block = 50 bits (32 data, 12 parity, 6 marker)");
		}	else {
			PrintAndLog("No data found!, clock tried:%d",clk);
			PrintAndLog("Try again with more samples.");
			PrintAndLog("  or after a 'data askedge' command to clean up the read");
			return 0;
		}
	} else if (start < 0) return 0;
	start = skip;
	snprintf(tmp2, sizeof(tmp2),"%d %d 1000 %d", clk, invert, clk*47);
	// get rid of leading crap 
	snprintf(tmp, sizeof(tmp), "%i", skip);
	CmdLtrim(tmp);
	bool pTest;
	bool AllPTest = true;
	// now work through remaining buffer printing out data blocks
	block = 0;
	i = startblock;
	while (block < 6) {
		if (verbose || g_debugMode) PrintAndLog("\nBlock %i:", block);
		skip = phaseoff;
		
		// look for LW before start of next block
		for ( ; i < j - 4 ; ++i) {
			skip += tmpbuff[i];
			if (tmpbuff[i] >= clk*3-tol && tmpbuff[i] <= clk*3+tol)
				if (tmpbuff[i+1] >= clk-tol)
					break;
		}
		if (i >= j-4) break; //next LW not found
		skip += clk;
		if (tmpbuff[i+1]>clk)
			phaseoff = tmpbuff[i+1]-clk;
		else
			phaseoff = 0;
		i += 2;
		if (ASKDemod(tmp2, false, false, 1) < 1) {
			save_restoreGB(0);
			return 0;
		}
		//set DemodBufferLen to just one block
		DemodBufferLen = skip/clk;
		//test parities
		pTest = EM_ByteParityTest(DemodBuffer,DemodBufferLen,5,9,0);	
		pTest &= EM_EndParityTest(DemodBuffer,DemodBufferLen,5,9,0);
		AllPTest &= pTest;
		//get output
		Code[block] = OutputEM4x50_Block(DemodBuffer,DemodBufferLen,verbose, pTest);
		if (g_debugMode) PrintAndLog("\nskipping %d samples, bits:%d", skip, skip/clk);
		//skip to start of next block
		snprintf(tmp,sizeof(tmp),"%i",skip);
		CmdLtrim(tmp);
		block++;
		if (i >= end) break; //in case chip doesn't output 6 blocks
	}
	//print full code:
	if (verbose || g_debugMode || AllPTest){
		if (!complete) {
			PrintAndLog("*** Warning!");
			PrintAndLog("Partial data - no end found!");
			PrintAndLog("Try again with more samples.");
		}
		PrintAndLog("Found data at sample: %i - using clock: %i", start, clk);    
		end = block;
		for (block=0; block < end; block++){
			PrintAndLog("Block %d: %08x",block,Code[block]);
		}
		if (AllPTest) {
			PrintAndLog("Parities Passed");
		} else {
			PrintAndLog("Parities Failed");
			PrintAndLog("Try cleaning the read samples with 'data askedge'");
		}
	}

	//restore GraphBuffer
	save_restoreGB(0);
	return (int)AllPTest;
}

int CmdEM4x50Read(const char *Cmd)
{
	return EM4x50Read(Cmd, true);
}

int CmdReadWord(const char *Cmd)
{
	int Word = -1; //default to invalid word
	UsbCommand c;
	
	sscanf(Cmd, "%d", &Word);
	
	if ( (Word > 15) | (Word < 0) ) {
		PrintAndLog("Word must be between 0 and 15");
		return 1;
	}
	
	PrintAndLog("Reading word %d", Word);
	
	c.cmd = CMD_EM4X_READ_WORD;
	c.d.asBytes[0] = 0x0; //Normal mode
	c.arg[0] = 0;
	c.arg[1] = Word;
	c.arg[2] = 0;
	SendCommand(&c);
	return 0;
}

int CmdReadWordPWD(const char *Cmd)
{
	int Word = -1; //default to invalid word
	int Password = 0xFFFFFFFF; //default to blank password
	UsbCommand c;
	
	sscanf(Cmd, "%d %x", &Word, &Password);
	
	if ( (Word > 15) | (Word < 0) ) {
		PrintAndLog("Word must be between 0 and 15");
		return 1;
	}
	
	PrintAndLog("Reading word %d with password %08X", Word, Password);
	
	c.cmd = CMD_EM4X_READ_WORD;
	c.d.asBytes[0] = 0x1; //Password mode
	c.arg[0] = 0;
	c.arg[1] = Word;
	c.arg[2] = Password;
	SendCommand(&c);
	return 0;
}

int CmdWriteWord(const char *Cmd)
{
	int Word = 16; //default to invalid block
	int Data = 0xFFFFFFFF; //default to blank data
	UsbCommand c;
	
	sscanf(Cmd, "%x %d", &Data, &Word);
	
	if (Word > 15) {
		PrintAndLog("Word must be between 0 and 15");
		return 1;
	}
	
	PrintAndLog("Writing word %d with data %08X", Word, Data);
	
	c.cmd = CMD_EM4X_WRITE_WORD;
	c.d.asBytes[0] = 0x0; //Normal mode
	c.arg[0] = Data;
	c.arg[1] = Word;
	c.arg[2] = 0;
	SendCommand(&c);
	return 0;
}

int CmdWriteWordPWD(const char *Cmd)
{
	int Word = 16; //default to invalid word
	int Data = 0xFFFFFFFF; //default to blank data
	int Password = 0xFFFFFFFF; //default to blank password
	UsbCommand c;
	
	sscanf(Cmd, "%x %d %x", &Data, &Word, &Password);
	
	if (Word > 15) {
		PrintAndLog("Word must be between 0 and 15");
		return 1;
	}
	
	PrintAndLog("Writing word %d with data %08X and password %08X", Word, Data, Password);
	
	c.cmd = CMD_EM4X_WRITE_WORD;
	c.d.asBytes[0] = 0x1; //Password mode
	c.arg[0] = Data;
	c.arg[1] = Word;
	c.arg[2] = Password;
	SendCommand(&c);
	return 0;
}

static command_t CommandTable[] =
{
	{"help", CmdHelp, 1, "This help"},
	{"em410xdemod", CmdEMdemodASK, 0, "[findone] -- Extract ID from EM410x tag (option 0 for continuous loop, 1 for only 1 tag)"},  
	{"em410xread", CmdEM410xRead, 1, "[clock rate] -- Extract ID from EM410x tag in GraphBuffer"},
	{"em410xsim", CmdEM410xSim, 0, "<UID> -- Simulate EM410x tag"},
	{"em410xwatch", CmdEM410xWatch, 0, "['h'] -- Watches for EM410x 125/134 kHz tags (option 'h' for 134)"},
	{"em410xspoof", CmdEM410xWatchnSpoof, 0, "['h'] --- Watches for EM410x 125/134 kHz tags, and replays them. (option 'h' for 134)" },
	{"em410xwrite", CmdEM410xWrite, 0, "<UID> <'0' T5555> <'1' T55x7> [clock rate] -- Write EM410x UID to T5555(Q5) or T55x7 tag, optionally setting clock rate"},
	{"em4x50read", CmdEM4x50Read, 1, "Extract data from EM4x50 tag"},
	{"readword", CmdReadWord, 1, "<Word> -- Read EM4xxx word data"},
	{"readwordPWD", CmdReadWordPWD, 1, "<Word> <Password> -- Read EM4xxx word data in password mode"},
	{"writeword", CmdWriteWord, 1, "<Data> <Word> -- Write EM4xxx word data"},
	{"writewordPWD", CmdWriteWordPWD, 1, "<Data> <Word> <Password> -- Write EM4xxx word data in password mode"},
	{NULL, NULL, 0, NULL}
};

int CmdLFEM4X(const char *Cmd)
{
	CmdsParse(CommandTable, Cmd);
	return 0;
}

int CmdHelp(const char *Cmd)
{
	CmdsHelp(CommandTable);
	return 0;
}
Commit	Line	Data
a553f267	1	//-----------------------------------------------------------------------------
	2	// Copyright (C) 2010 iZsh <izsh at fail0verflow.com>
	3	//
	4	// This code is licensed to you under the terms of the GNU GPL, version 2 or,
	5	// at your option, any later version. See the LICENSE.txt file for the text of
	6	// the license.
	7	//-----------------------------------------------------------------------------
	8	// Low frequency EM4x commands
	9	//-----------------------------------------------------------------------------
	10
7fe9b0b7	11	#include <stdio.h>
9e13f875	12	#include <string.h>
ec564290	13	#include <inttypes.h>
902cb3c0	14	#include "proxmark3.h"
7fe9b0b7	15	#include "ui.h"
3fe4ff4f	16	#include "util.h"
7fe9b0b7	17	#include "graph.h"
	18	#include "cmdparser.h"
	19	#include "cmddata.h"
	20	#include "cmdlf.h"
	21	#include "cmdlfem4x.h"
23f0a7d8	22	#include "lfdemod.h"
0ad1a1d4	23
	24	#define llx PRIx64
	25
c3bfb9c7	26	char *global_em410xId;
7fe9b0b7	27
	28	static int CmdHelp(const char *Cmd);
	29
66707a3b	30	int CmdEMdemodASK(const char *Cmd)
66707a3b	31	{
3fe4ff4f	32	char cmdp = param_getchar(Cmd, 0);
cc15a118	33	int findone = (cmdp == '1') ? 1 : 0;
23f0a7d8	34	UsbCommand c={CMD_EM410X_DEMOD};
	35	c.arg[0]=findone;
	36	SendCommand(&c);
	37	return 0;
66707a3b	38	}
66707a3b	39
7fe9b0b7	40	/* Read the ID of an EM410x tag.
	41	* Format:
	42	* 1111 1111 1 <-- standard non-repeatable header
	43	* XXXX [row parity bit] <-- 10 rows of 5 bits for our 40 bit tag ID
	44	* ....
	45	* CCCC <-- each bit here is parity for the 10 bits above in corresponding column
	46	* 0 <-- stop bit, end of tag
	47	*/
	48	int CmdEM410xRead(const char *Cmd)
	49	{
23f0a7d8	50	uint32_t hi=0;
	51	uint64_t lo=0;
	52
fef74fdc	53	if(!AskEm410xDemod("", &hi, &lo, false)) return 0;
23f0a7d8	54	PrintAndLog("EM410x pattern found: ");
	55	printEM410x(hi, lo);
	56	if (hi){
	57	PrintAndLog ("EM410x XL pattern found");
	58	return 0;
	59	}
	60	char id[12] = {0x00};
	61	sprintf(id, "%010llx",lo);
	62
	63	global_em410xId = id;
	64	return 1;
7fe9b0b7	65	}
7fe9b0b7	66
13d77ef9	67	// emulate an EM410X tag
7fe9b0b7	68	int CmdEM410xSim(const char *Cmd)
7fe9b0b7	69	{
3fe4ff4f	70	int i, n, j, binary[4], parity[4];
	71
	72	char cmdp = param_getchar(Cmd, 0);
	73	uint8_t uid[5] = {0x00};
	74
	75	if (cmdp == 'h' \|\| cmdp == 'H') {
bca71079	76	PrintAndLog("Usage: lf em4x em410xsim <UID> <clock>");
3fe4ff4f	77	PrintAndLog("");
ba765c9e	78	PrintAndLog(" sample: lf em4x em410xsim 0F0368568B");
3fe4ff4f	79	return 0;
3fe4ff4f	80	}
bca71079	81	/* clock is 64 in EM410x tags */
bca71079	82	uint8_t clock = 64;
3fe4ff4f	83
	84	if (param_gethex(Cmd, 0, uid, 10)) {
	85	PrintAndLog("UID must include 10 HEX symbols");
	86	return 0;
	87	}
bca71079	88	param_getdec(Cmd, 1, &clock);
3fe4ff4f	89
bca71079	90	PrintAndLog("Starting simulating UID %02X%02X%02X%02X%02X clock: %d", uid[0],uid[1],uid[2],uid[3],uid[4],clock);
3fe4ff4f	91	PrintAndLog("Press pm3-button to about simulation");
7fe9b0b7	92
23f0a7d8	93
	94	/* clear our graph */
	95	ClearGraph(0);
	96
	97	/* write 9 start bits */
	98	for (i = 0; i < 9; i++)
	99	AppendGraph(0, clock, 1);
	100
	101	/* for each hex char */
	102	parity[0] = parity[1] = parity[2] = parity[3] = 0;
	103	for (i = 0; i < 10; i++)
	104	{
	105	/* read each hex char */
	106	sscanf(&Cmd[i], "%1x", &n);
	107	for (j = 3; j >= 0; j--, n/= 2)
	108	binary[j] = n % 2;
	109
	110	/* append each bit */
	111	AppendGraph(0, clock, binary[0]);
	112	AppendGraph(0, clock, binary[1]);
	113	AppendGraph(0, clock, binary[2]);
	114	AppendGraph(0, clock, binary[3]);
	115
	116	/* append parity bit */
	117	AppendGraph(0, clock, binary[0] ^ binary[1] ^ binary[2] ^ binary[3]);
	118
	119	/* keep track of column parity */
	120	parity[0] ^= binary[0];
	121	parity[1] ^= binary[1];
	122	parity[2] ^= binary[2];
	123	parity[3] ^= binary[3];
	124	}
	125
	126	/* parity columns */
	127	AppendGraph(0, clock, parity[0]);
	128	AppendGraph(0, clock, parity[1]);
	129	AppendGraph(0, clock, parity[2]);
	130	AppendGraph(0, clock, parity[3]);
	131
	132	/* stop bit */
	133	AppendGraph(1, clock, 0);
3fe4ff4f	134
23f0a7d8	135	CmdLFSim("0"); //240 start_gap.
23f0a7d8	136	return 0;
7fe9b0b7	137	}
7fe9b0b7	138
3fe4ff4f	139	/* Function is equivalent of lf read + data samples + em410xread
	140	* looped until an EM410x tag is detected
	141	*
	142	* Why is CmdSamples("16000")?
	143	* TBD: Auto-grow sample size based on detected sample rate. IE: If the
	144	* rate gets lower, then grow the number of samples
	145	* Changed by martin, 4000 x 4 = 16000,
	146	* see http://www.proxmark.org/forum/viewtopic.php?pid=7235#p7235
3fe4ff4f	147	*/
7fe9b0b7	148	int CmdEM410xWatch(const char *Cmd)
7fe9b0b7	149	{
3fe4ff4f	150	do {
	151	if (ukbhit()) {
	152	printf("\naborted via keyboard!\n");
	153	break;
	154	}
	155
1fbf8956	156	CmdLFRead("s");
2767fc02	157	getSamples("8201",true); //capture enough to get 2 complete preambles (4096*2+9)
13d77ef9	158	} while (!CmdEM410xRead(""));
13d77ef9	159
3fe4ff4f	160	return 0;
7fe9b0b7	161	}
7fe9b0b7	162
23f0a7d8	163	//currently only supports manchester modulations
c3bfb9c7	164	int CmdEM410xWatchnSpoof(const char *Cmd)
	165	{
	166	CmdEM410xWatch(Cmd);
1fbf8956	167	PrintAndLog("# Replaying captured ID: %s",global_em410xId);
	168	CmdLFaskSim("");
	169	return 0;
c3bfb9c7	170	}
c3bfb9c7	171
2d4eae76	172	int CmdEM410xWrite(const char *Cmd)
2d4eae76	173	{
6e984446	174	uint64_t id = 0xFFFFFFFFFFFFFFFF; // invalid id value
6e984446	175	int card = 0xFF; // invalid card value
8ce3e4b4	176	uint32_t clock = 0; // invalid clock value
e67b06b7	177
	178	sscanf(Cmd, "%" PRIx64 " %d %d", &id, &card, &clock);
	179
	180	// Check ID
	181	if (id == 0xFFFFFFFFFFFFFFFF) {
	182	PrintAndLog("Error! ID is required.\n");
	183	return 0;
	184	}
	185	if (id >= 0x10000000000) {
	186	PrintAndLog("Error! Given EM410x ID is longer than 40 bits.\n");
	187	return 0;
	188	}
	189
	190	// Check Card
	191	if (card == 0xFF) {
	192	PrintAndLog("Error! Card type required.\n");
	193	return 0;
	194	}
	195	if (card < 0) {
	196	PrintAndLog("Error! Bad card type selected.\n");
	197	return 0;
	198	}
	199
	200	// Check Clock
e67b06b7	201	// Default: 64
8ce3e4b4	202	if (clock == 0)
8ce3e4b4	203	clock = 64;
e67b06b7	204
bca71079	205	// Allowed clock rates: 16, 32, 40 and 64
	206	if ((clock != 16) && (clock != 32) && (clock != 64) && (clock != 40)) {
	207	PrintAndLog("Error! Clock rate %d not valid. Supported clock rates are 16, 32, 40 and 64.\n", clock);
e67b06b7	208	return 0;
	209	}
	210
	211	if (card == 1) {
	212	PrintAndLog("Writing %s tag with UID 0x%010" PRIx64 " (clock rate: %d)", "T55x7", id, clock);
	213	// NOTE: We really should pass the clock in as a separate argument, but to
	214	// provide for backwards-compatibility for older firmware, and to avoid
	215	// having to add another argument to CMD_EM410X_WRITE_TAG, we just store
	216	// the clock rate in bits 8-15 of the card value
bca71079	217	card = (card & 0xFF) \| ((clock << 8) & 0xFF00);
bca71079	218	} else if (card == 0) {
e67b06b7	219	PrintAndLog("Writing %s tag with UID 0x%010" PRIx64, "T5555", id, clock);
bca71079	220	card = (card & 0xFF) \| ((clock << 8) & 0xFF00);
bca71079	221	} else {
e67b06b7	222	PrintAndLog("Error! Bad card type selected.\n");
	223	return 0;
	224	}
2d4eae76	225
6e984446	226	UsbCommand c = {CMD_EM410X_WRITE_TAG, {card, (uint32_t)(id >> 32), (uint32_t)id}};
6e984446	227	SendCommand(&c);
6e984446	228	return 0;
6e984446	229	}
2d4eae76	230
23f0a7d8	231	bool EM_EndParityTest(uint8_t *BitStream, size_t size, uint8_t rows, uint8_t cols, uint8_t pType)
	232	{
	233	if (rows*cols>size) return false;
	234	uint8_t colP=0;
cc15a118	235	//assume last col is a parity and do not test
23f0a7d8	236	for (uint8_t colNum = 0; colNum < cols-1; colNum++) {
	237	for (uint8_t rowNum = 0; rowNum < rows; rowNum++) {
	238	colP ^= BitStream[(rowNum*cols)+colNum];
	239	}
	240	if (colP != pType) return false;
	241	}
	242	return true;
	243	}
	244
	245	bool EM_ByteParityTest(uint8_t *BitStream, size_t size, uint8_t rows, uint8_t cols, uint8_t pType)
	246	{
	247	if (rows*cols>size) return false;
	248	uint8_t rowP=0;
	249	//assume last row is a parity row and do not test
	250	for (uint8_t rowNum = 0; rowNum < rows-1; rowNum++) {
	251	for (uint8_t colNum = 0; colNum < cols; colNum++) {
	252	rowP ^= BitStream[(rowNum*cols)+colNum];
	253	}
	254	if (rowP != pType) return false;
	255	}
	256	return true;
	257	}
	258
	259	uint32_t OutputEM4x50_Block(uint8_t *BitStream, size_t size, bool verbose, bool pTest)
	260	{
	261	if (size<45) return 0;
	262	uint32_t code = bytebits_to_byte(BitStream,8);
	263	code = code<<8 \| bytebits_to_byte(BitStream+9,8);
	264	code = code<<8 \| bytebits_to_byte(BitStream+18,8);
	265	code = code<<8 \| bytebits_to_byte(BitStream+27,8);
	266	if (verbose \|\| g_debugMode){
	267	for (uint8_t i = 0; i<5; i++){
cc15a118	268	if (i == 4) PrintAndLog(""); //parity byte spacer
23f0a7d8	269	PrintAndLog("%d%d%d%d%d%d%d%d %d -> 0x%02x",
	270	BitStream[i*9],
	271	BitStream[i*9+1],
	272	BitStream[i*9+2],
	273	BitStream[i*9+3],
	274	BitStream[i*9+4],
	275	BitStream[i*9+5],
	276	BitStream[i*9+6],
	277	BitStream[i*9+7],
	278	BitStream[i*9+8],
	279	bytebits_to_byte(BitStream+i*9,8)
	280	);
	281	}
	282	if (pTest)
	283	PrintAndLog("Parity Passed");
	284	else
	285	PrintAndLog("Parity Failed");
	286	}
23f0a7d8	287	return code;
23f0a7d8	288	}
7fe9b0b7	289	/* Read the transmitted data of an EM4x50 tag
	290	* Format:
	291	*
	292	* XXXXXXXX [row parity bit (even)] <- 8 bits plus parity
	293	* XXXXXXXX [row parity bit (even)] <- 8 bits plus parity
	294	* XXXXXXXX [row parity bit (even)] <- 8 bits plus parity
	295	* XXXXXXXX [row parity bit (even)] <- 8 bits plus parity
	296	* CCCCCCCC <- column parity bits
	297	* 0 <- stop bit
	298	* LW <- Listen Window
	299	*
	300	* This pattern repeats for every block of data being transmitted.
	301	* Transmission starts with two Listen Windows (LW - a modulated
	302	* pattern of 320 cycles each (32/32/128/64/64)).
	303	*
	304	* Note that this data may or may not be the UID. It is whatever data
	305	* is stored in the blocks defined in the control word First and Last
	306	* Word Read values. UID is stored in block 32.
	307	*/
cc15a118	308	//completed by Marshmellow
23f0a7d8	309	int EM4x50Read(const char *Cmd, bool verbose)
23f0a7d8	310	{
cc15a118	311	uint8_t fndClk[] = {8,16,32,40,50,64,128};
23f0a7d8	312	int clk = 0;
23f0a7d8	313	int invert = 0;
23f0a7d8	314	int tol = 0;
23f0a7d8	315	int i, j, startblock, skip, block, start, end, low, high, minClk;
cc15a118	316	bool complete = false;
23f0a7d8	317	int tmpbuff[MAX_GRAPH_TRACE_LEN / 64];
23f0a7d8	318	uint32_t Code[6];
23f0a7d8	319	char tmp[6];
23f0a7d8	320	char tmp2[20];
49bbc60a	321	int phaseoff;
cc15a118	322	high = low = 0;
23f0a7d8	323	memset(tmpbuff, 0, MAX_GRAPH_TRACE_LEN / 64);
cc15a118	324
	325	// get user entry if any
	326	sscanf(Cmd, "%i %i", &clk, &invert);
	327
	328	// save GraphBuffer - to restore it later
	329	save_restoreGB(1);
	330
23f0a7d8	331	// first get high and low values
cc15a118	332	for (i = 0; i < GraphTraceLen; i++) {
23f0a7d8	333	if (GraphBuffer[i] > high)
	334	high = GraphBuffer[i];
	335	else if (GraphBuffer[i] < low)
	336	low = GraphBuffer[i];
	337	}
	338
cc15a118	339	i = 0;
	340	j = 0;
	341	minClk = 255;
	342	// get to first full low to prime loop and skip incomplete first pulse
	343	while ((GraphBuffer[i] < high) && (i < GraphTraceLen))
	344	++i;
	345	while ((GraphBuffer[i] > low) && (i < GraphTraceLen))
	346	++i;
	347	skip = i;
	348
	349	// populate tmpbuff buffer with pulse lengths
	350	while (i < GraphTraceLen) {
23f0a7d8	351	// measure from low to low
cc15a118	352	while ((GraphBuffer[i] > low) && (i < GraphTraceLen))
23f0a7d8	353	++i;
23f0a7d8	354	start= i;
cc15a118	355	while ((GraphBuffer[i] < high) && (i < GraphTraceLen))
23f0a7d8	356	++i;
cc15a118	357	while ((GraphBuffer[i] > low) && (i < GraphTraceLen))
23f0a7d8	358	++i;
	359	if (j>=(MAX_GRAPH_TRACE_LEN/64)) {
	360	break;
	361	}
	362	tmpbuff[j++]= i - start;
cc15a118	363	if (i-start < minClk && i < GraphTraceLen) {
	364	minClk = i - start;
	365	}
23f0a7d8	366	}
23f0a7d8	367	// set clock
cc15a118	368	if (!clk) {
23f0a7d8	369	for (uint8_t clkCnt = 0; clkCnt<7; clkCnt++) {
23f0a7d8	370	tol = fndClk[clkCnt]/8;
cc15a118	371	if (minClk >= fndClk[clkCnt]-tol && minClk <= fndClk[clkCnt]+1) {
23f0a7d8	372	clk=fndClk[clkCnt];
	373	break;
	374	}
	375	}
cc15a118	376	if (!clk) return 0;
6e984446	377	} else tol = clk/8;
23f0a7d8	378
23f0a7d8	379	// look for data start - should be 2 pairs of LW (pulses of clk3,clk2)
cc15a118	380	start = -1;
cc15a118	381	for (i= 0; i < j - 4 ; ++i) {
23f0a7d8	382	skip += tmpbuff[i];
cc15a118	383	if (tmpbuff[i] >= clk3-tol && tmpbuff[i] <= clk3+tol) //3 clocks
	384	if (tmpbuff[i+1] >= clk2-tol && tmpbuff[i+1] <= clk2+tol) //2 clocks
	385	if (tmpbuff[i+2] >= clk3-tol && tmpbuff[i+2] <= clk3+tol) //3 clocks
	386	if (tmpbuff[i+3] >= clk-tol) //1.5 to 2 clocks - depends on bit following
23f0a7d8	387	{
	388	start= i + 4;
	389	break;
	390	}
	391	}
cc15a118	392	startblock = i + 4;
23f0a7d8	393
23f0a7d8	394	// skip over the remainder of LW
49bbc60a	395	skip += tmpbuff[i+1] + tmpbuff[i+2] + clk;
	396	if (tmpbuff[i+3]>clk)
	397	phaseoff = tmpbuff[i+3]-clk;
	398	else
	399	phaseoff = 0;
23f0a7d8	400	// now do it again to find the end
23f0a7d8	401	end = skip;
cc15a118	402	for (i += 3; i < j - 4 ; ++i) {
23f0a7d8	403	end += tmpbuff[i];
cc15a118	404	if (tmpbuff[i] >= clk3-tol && tmpbuff[i] <= clk3+tol) //3 clocks
	405	if (tmpbuff[i+1] >= clk2-tol && tmpbuff[i+1] <= clk2+tol) //2 clocks
	406	if (tmpbuff[i+2] >= clk3-tol && tmpbuff[i+2] <= clk3+tol) //3 clocks
	407	if (tmpbuff[i+3] >= clk-tol) //1.5 to 2 clocks - depends on bit following
23f0a7d8	408	{
	409	complete= true;
	410	break;
	411	}
	412	}
	413	end = i;
	414	// report back
	415	if (verbose \|\| g_debugMode) {
	416	if (start >= 0) {
cc15a118	417	PrintAndLog("\nNote: one block = 50 bits (32 data, 12 parity, 6 marker)");
23f0a7d8	418	} else {
cc15a118	419	PrintAndLog("No data found!, clock tried:%d",clk);
23f0a7d8	420	PrintAndLog("Try again with more samples.");
cc15a118	421	PrintAndLog(" or after a 'data askedge' command to clean up the read");
23f0a7d8	422	return 0;
23f0a7d8	423	}
23f0a7d8	424	} else if (start < 0) return 0;
cc15a118	425	start = skip;
23f0a7d8	426	snprintf(tmp2, sizeof(tmp2),"%d %d 1000 %d", clk, invert, clk*47);
23f0a7d8	427	// get rid of leading crap
cc15a118	428	snprintf(tmp, sizeof(tmp), "%i", skip);
23f0a7d8	429	CmdLtrim(tmp);
23f0a7d8	430	bool pTest;
cc15a118	431	bool AllPTest = true;
23f0a7d8	432	// now work through remaining buffer printing out data blocks
	433	block = 0;
	434	i = startblock;
cc15a118	435	while (block < 6) {
23f0a7d8	436	if (verbose \|\| g_debugMode) PrintAndLog("\nBlock %i:", block);
	437	skip = phaseoff;
	438
	439	// look for LW before start of next block
cc15a118	440	for ( ; i < j - 4 ; ++i) {
23f0a7d8	441	skip += tmpbuff[i];
	442	if (tmpbuff[i] >= clk3-tol && tmpbuff[i] <= clk3+tol)
	443	if (tmpbuff[i+1] >= clk-tol)
	444	break;
	445	}
49bbc60a	446	if (i >= j-4) break; //next LW not found
23f0a7d8	447	skip += clk;
49bbc60a	448	if (tmpbuff[i+1]>clk)
	449	phaseoff = tmpbuff[i+1]-clk;
	450	else
	451	phaseoff = 0;
23f0a7d8	452	i += 2;
fef74fdc	453	if (ASKDemod(tmp2, false, false, 1) < 1) {
cc15a118	454	save_restoreGB(0);
	455	return 0;
	456	}
23f0a7d8	457	//set DemodBufferLen to just one block
	458	DemodBufferLen = skip/clk;
	459	//test parities
	460	pTest = EM_ByteParityTest(DemodBuffer,DemodBufferLen,5,9,0);
	461	pTest &= EM_EndParityTest(DemodBuffer,DemodBufferLen,5,9,0);
	462	AllPTest &= pTest;
	463	//get output
cc15a118	464	Code[block] = OutputEM4x50_Block(DemodBuffer,DemodBufferLen,verbose, pTest);
cc15a118	465	if (g_debugMode) PrintAndLog("\nskipping %d samples, bits:%d", skip, skip/clk);
23f0a7d8	466	//skip to start of next block
	467	snprintf(tmp,sizeof(tmp),"%i",skip);
	468	CmdLtrim(tmp);
	469	block++;
cc15a118	470	if (i >= end) break; //in case chip doesn't output 6 blocks
23f0a7d8	471	}
	472	//print full code:
	473	if (verbose \|\| g_debugMode \|\| AllPTest){
49bbc60a	474	if (!complete) {
	475	PrintAndLog("*** Warning!");
	476	PrintAndLog("Partial data - no end found!");
	477	PrintAndLog("Try again with more samples.");
	478	}
cc15a118	479	PrintAndLog("Found data at sample: %i - using clock: %i", start, clk);
	480	end = block;
	481	for (block=0; block < end; block++){
23f0a7d8	482	PrintAndLog("Block %d: %08x",block,Code[block]);
23f0a7d8	483	}
49bbc60a	484	if (AllPTest) {
23f0a7d8	485	PrintAndLog("Parities Passed");
49bbc60a	486	} else {
23f0a7d8	487	PrintAndLog("Parities Failed");
cc15a118	488	PrintAndLog("Try cleaning the read samples with 'data askedge'");
49bbc60a	489	}
23f0a7d8	490	}
	491
	492	//restore GraphBuffer
	493	save_restoreGB(0);
	494	return (int)AllPTest;
	495	}
	496
7fe9b0b7	497	int CmdEM4x50Read(const char *Cmd)
7fe9b0b7	498	{
23f0a7d8	499	return EM4x50Read(Cmd, true);
2d4eae76	500	}
2d4eae76	501
54a942b0	502	int CmdReadWord(const char *Cmd)
54a942b0	503	{
b915fda3	504	int Word = -1; //default to invalid word
23f0a7d8	505	UsbCommand c;
	506
	507	sscanf(Cmd, "%d", &Word);
	508
b915fda3	509	if ( (Word > 15) \| (Word < 0) ) {
23f0a7d8	510	PrintAndLog("Word must be between 0 and 15");
	511	return 1;
	512	}
	513
	514	PrintAndLog("Reading word %d", Word);
	515
	516	c.cmd = CMD_EM4X_READ_WORD;
	517	c.d.asBytes[0] = 0x0; //Normal mode
	518	c.arg[0] = 0;
	519	c.arg[1] = Word;
	520	c.arg[2] = 0;
	521	SendCommand(&c);
	522	return 0;
54a942b0	523	}
	524
	525	int CmdReadWordPWD(const char *Cmd)
	526	{
b915fda3	527	int Word = -1; //default to invalid word
23f0a7d8	528	int Password = 0xFFFFFFFF; //default to blank password
	529	UsbCommand c;
	530
	531	sscanf(Cmd, "%d %x", &Word, &Password);
	532
b915fda3	533	if ( (Word > 15) \| (Word < 0) ) {
23f0a7d8	534	PrintAndLog("Word must be between 0 and 15");
	535	return 1;
	536	}
	537
	538	PrintAndLog("Reading word %d with password %08X", Word, Password);
	539
	540	c.cmd = CMD_EM4X_READ_WORD;
	541	c.d.asBytes[0] = 0x1; //Password mode
	542	c.arg[0] = 0;
	543	c.arg[1] = Word;
	544	c.arg[2] = Password;
	545	SendCommand(&c);
	546	return 0;
54a942b0	547	}
	548
	549	int CmdWriteWord(const char *Cmd)
	550	{
23f0a7d8	551	int Word = 16; //default to invalid block
	552	int Data = 0xFFFFFFFF; //default to blank data
	553	UsbCommand c;
	554
	555	sscanf(Cmd, "%x %d", &Data, &Word);
	556
	557	if (Word > 15) {
	558	PrintAndLog("Word must be between 0 and 15");
	559	return 1;
	560	}
	561
	562	PrintAndLog("Writing word %d with data %08X", Word, Data);
	563
	564	c.cmd = CMD_EM4X_WRITE_WORD;
	565	c.d.asBytes[0] = 0x0; //Normal mode
	566	c.arg[0] = Data;
	567	c.arg[1] = Word;
	568	c.arg[2] = 0;
	569	SendCommand(&c);
	570	return 0;
54a942b0	571	}
	572
	573	int CmdWriteWordPWD(const char *Cmd)
	574	{
23f0a7d8	575	int Word = 16; //default to invalid word
	576	int Data = 0xFFFFFFFF; //default to blank data
	577	int Password = 0xFFFFFFFF; //default to blank password
	578	UsbCommand c;
	579
	580	sscanf(Cmd, "%x %d %x", &Data, &Word, &Password);
	581
	582	if (Word > 15) {
	583	PrintAndLog("Word must be between 0 and 15");
	584	return 1;
	585	}
	586
	587	PrintAndLog("Writing word %d with data %08X and password %08X", Word, Data, Password);
	588
	589	c.cmd = CMD_EM4X_WRITE_WORD;
	590	c.d.asBytes[0] = 0x1; //Password mode
	591	c.arg[0] = Data;
	592	c.arg[1] = Word;
	593	c.arg[2] = Password;
	594	SendCommand(&c);
	595	return 0;
54a942b0	596	}
54a942b0	597
2d4eae76	598	static command_t CommandTable[] =
7fe9b0b7	599	{
23f0a7d8	600	{"help", CmdHelp, 1, "This help"},
23f0a7d8	601	{"em410xdemod", CmdEMdemodASK, 0, "[findone] -- Extract ID from EM410x tag (option 0 for continuous loop, 1 for only 1 tag)"},
8e0cf023	602	{"em410xread", CmdEM410xRead, 1, "[clock rate] -- Extract ID from EM410x tag in GraphBuffer"},
23f0a7d8	603	{"em410xsim", CmdEM410xSim, 0, "<UID> -- Simulate EM410x tag"},
	604	{"em410xwatch", CmdEM410xWatch, 0, "['h'] -- Watches for EM410x 125/134 kHz tags (option 'h' for 134)"},
	605	{"em410xspoof", CmdEM410xWatchnSpoof, 0, "['h'] --- Watches for EM410x 125/134 kHz tags, and replays them. (option 'h' for 134)" },
8e0cf023	606	{"em410xwrite", CmdEM410xWrite, 0, "<UID> <'0' T5555> <'1' T55x7> [clock rate] -- Write EM410x UID to T5555(Q5) or T55x7 tag, optionally setting clock rate"},
23f0a7d8	607	{"em4x50read", CmdEM4x50Read, 1, "Extract data from EM4x50 tag"},
	608	{"readword", CmdReadWord, 1, "<Word> -- Read EM4xxx word data"},
	609	{"readwordPWD", CmdReadWordPWD, 1, "<Word> <Password> -- Read EM4xxx word data in password mode"},
	610	{"writeword", CmdWriteWord, 1, "<Data> <Word> -- Write EM4xxx word data"},
	611	{"writewordPWD", CmdWriteWordPWD, 1, "<Data> <Word> <Password> -- Write EM4xxx word data in password mode"},
	612	{NULL, NULL, 0, NULL}
7fe9b0b7	613	};
	614
	615	int CmdLFEM4X(const char *Cmd)
	616	{
23f0a7d8	617	CmdsParse(CommandTable, Cmd);
23f0a7d8	618	return 0;
7fe9b0b7	619	}
	620
	621	int CmdHelp(const char *Cmd)
	622	{
23f0a7d8	623	CmdsHelp(CommandTable);
23f0a7d8	624	return 0;
7fe9b0b7	625	}