X-Git-Url: http://cvs.zerfleddert.de/cgi-bin/gitweb.cgi/proxmark3-svn/blobdiff_plain/2d4eae76177550984019fc7e9dbb6ee54b6e703e..b5cefff12c4b8c415926a1ccef3f3f528629e2d0:/armsrc/appmain.c?ds=sidebyside

diff --git a/armsrc/appmain.c b/armsrc/appmain.c
index d7f05d16..782c57fa 100644
--- a/armsrc/appmain.c
+++ b/armsrc/appmain.c
@@ -10,6 +10,9 @@
 // executes.
 //-----------------------------------------------------------------------------
 
+#include "usb_cdc.h"
+#include "cmd.h"
+
 #include "proxmark3.h"
 #include "apps.h"
 #include "util.h"
@@ -19,10 +22,18 @@
 #include <stdarg.h>
 
 #include "legicrf.h"
-
+#include <hitag2.h>
+#include "lfsampling.h"
+#include "BigBuf.h"
+#include "mifareutil.h"
+#include "pcf7931.h"
 #ifdef WITH_LCD
-# include "fonts.h"
-# include "LCD.h"
+ #include "LCD.h"
+#endif
+
+// Craig Young - 14a stand-alone code
+#ifdef WITH_ISO14443a_StandAlone
+ #include "iso14443a.h"
 #endif
 
 #define abs(x) ( ((x)<0) ? -(x) : (x) )
@@ -33,17 +44,12 @@
 // is the order in which they go out on the wire.
 //=============================================================================
 
-uint8_t ToSend[512];
+#define TOSEND_BUFFER_SIZE (9*MAX_FRAME_SIZE + 1 + 1 + 2)  // 8 data bits and 1 parity bit per payload byte, 1 correction bit, 1 SOC bit, 2 EOC bits 
+uint8_t ToSend[TOSEND_BUFFER_SIZE];
 int ToSendMax;
 static int ToSendBit;
 struct common_area common_area __attribute__((section(".commonarea")));
 
-void BufferClear(void)
-{
-	memset(BigBuf,0,sizeof(BigBuf));
-	Dbprintf("Buffer cleared (%i bytes)",sizeof(BigBuf));
-}
-
 void ToSendReset(void)
 {
 	ToSendMax = -1;
@@ -64,7 +70,7 @@ void ToSendStuffBit(int b)
 
 	ToSendBit++;
 
-	if(ToSendBit >= sizeof(ToSend)) {
+	if(ToSendMax >= sizeof(ToSend)) {
 		ToSendBit = 0;
 		DbpString("ToSendStuffBit overflowed!");
 	}
@@ -76,39 +82,14 @@ void ToSendStuffBit(int b)
 
 void DbpString(char *str)
 {
-	/* this holds up stuff unless we're connected to usb */
-	if (!UsbConnected())
-		return;
-
-	UsbCommand c;
-	c.cmd = CMD_DEBUG_PRINT_STRING;
-	c.arg[0] = strlen(str);
-	if(c.arg[0] > sizeof(c.d.asBytes)) {
-		c.arg[0] = sizeof(c.d.asBytes);
-	}
-	memcpy(c.d.asBytes, str, c.arg[0]);
-
-	UsbSendPacket((uint8_t *)&c, sizeof(c));
-	// TODO fix USB so stupid things like this aren't req'd
-	SpinDelay(50);
+  byte_t len = strlen(str);
+  cmd_send(CMD_DEBUG_PRINT_STRING,len,0,0,(byte_t*)str,len);
 }
 
 #if 0
 void DbpIntegers(int x1, int x2, int x3)
 {
-	/* this holds up stuff unless we're connected to usb */
-	if (!UsbConnected())
-		return;
-
-	UsbCommand c;
-	c.cmd = CMD_DEBUG_PRINT_INTEGERS;
-	c.arg[0] = x1;
-	c.arg[1] = x2;
-	c.arg[2] = x3;
-
-	UsbSendPacket((uint8_t *)&c, sizeof(c));
-	// XXX
-	SpinDelay(50);
+  cmd_send(CMD_DEBUG_PRINT_INTEGERS,x1,x2,x3,0,0);
 }
 #endif
 
@@ -125,23 +106,27 @@ void Dbprintf(const char *fmt, ...) {
 }
 
 // prints HEX & ASCII
-void Dbhexdump(int len, uint8_t *d) {
+void Dbhexdump(int len, uint8_t *d, bool bAsci) {
 	int l=0,i;
 	char ascii[9];
-
+    
 	while (len>0) {
 		if (len>8) l=8;
 		else l=len;
 		
 		memcpy(ascii,d,l);
-		ascii[l]=0;	
+		ascii[l]=0;
 		
 		// filter safe ascii
-		for (i=0;i<l;i++) 
+		for (i=0;i<l;i++)
 			if (ascii[i]<32 || ascii[i]>126) ascii[i]='.';
-
-		Dbprintf("%-8s %*D",ascii,l,d," ");
-
+        
+		if (bAsci) {
+			Dbprintf("%-8s %*D",ascii,l,d," ");
+		} else {
+			Dbprintf("%*D",l,d," ");
+		}
+        
 		len-=8;
 		d+=8;		
 	}
@@ -158,12 +143,25 @@ static int ReadAdc(int ch)
 
 	AT91C_BASE_ADC->ADC_CR = AT91C_ADC_SWRST;
 	AT91C_BASE_ADC->ADC_MR =
-		ADC_MODE_PRESCALE(32) |
-		ADC_MODE_STARTUP_TIME(16) |
-		ADC_MODE_SAMPLE_HOLD_TIME(8);
+		ADC_MODE_PRESCALE(63  /* was 32 */) |							// ADC_CLK = MCK / ((63+1) * 2) = 48MHz / 128 = 375kHz
+		ADC_MODE_STARTUP_TIME(1  /* was 16 */) |						// Startup Time = (1+1) * 8 / ADC_CLK = 16 / 375kHz = 42,7us     Note: must be > 20us
+		ADC_MODE_SAMPLE_HOLD_TIME(15  /* was 8 */); 					// Sample & Hold Time SHTIM = 15 / ADC_CLK = 15 / 375kHz = 40us
+
+	// Note: ADC_MODE_PRESCALE and ADC_MODE_SAMPLE_HOLD_TIME are set to the maximum allowed value. 
+	// Both AMPL_LO and AMPL_HI are very high impedance (10MOhm) outputs, the input capacitance of the ADC is 12pF (typical). This results in a time constant
+	// of RC = 10MOhm * 12pF = 120us. Even after the maximum configurable sample&hold time of 40us the input capacitor will not be fully charged. 
+	// 
+	// The maths are:
+	// If there is a voltage v_in at the input, the voltage v_cap at the capacitor (this is what we are measuring) will be
+	//
+	//       v_cap = v_in * (1 - exp(-RC/SHTIM))  =   v_in * (1 - exp(-3))  =  v_in * 0,95                   (i.e. an error of 5%)
+	// 
+	// Note: with the "historic" values in the comments above, the error was 34%  !!!
+	
 	AT91C_BASE_ADC->ADC_CHER = ADC_CHANNEL(ch);
 
 	AT91C_BASE_ADC->ADC_CR = AT91C_ADC_START;
+
 	while(!(AT91C_BASE_ADC->ADC_SR & ADC_END_OF_CONVERSION(ch)))
 		;
 	d = AT91C_BASE_ADC->ADC_CDR[ch];
@@ -185,14 +183,11 @@ int AvgAdc(int ch) // was static - merlok
 
 void MeasureAntennaTuning(void)
 {
-	uint8_t *dest = (uint8_t *)BigBuf;
-	int i, ptr = 0, adcval = 0, peak = 0, peakv = 0, peakf = 0;;
+	uint8_t LF_Results[256];
+	int i, adcval = 0, peak = 0, peakv = 0, peakf = 0; //ptr = 0 
 	int vLf125 = 0, vLf134 = 0, vHf = 0;	// in mV
 
-	UsbCommand c;
-
-	DbpString("Measuring antenna characteristics, please wait.");
-	memset(BigBuf,0,sizeof(BigBuf));
+	LED_B_ON();
 
 /*
  * Sweeps the useful LF range of the proxmark from
@@ -202,37 +197,40 @@ void MeasureAntennaTuning(void)
  * the resonating frequency of your LF antenna
  * ( hopefully around 95 if it is tuned to 125kHz!)
  */
-	FpgaWriteConfWord(FPGA_MAJOR_MODE_LF_READER);
-	for (i=255; i>19; i--) {
+  
+  	FpgaDownloadAndGo(FPGA_BITSTREAM_LF);
+	FpgaWriteConfWord(FPGA_MAJOR_MODE_LF_ADC | FPGA_LF_ADC_READER_FIELD);
+	for (i=255; i>=19; i--) {
+    WDT_HIT();
 		FpgaSendCommand(FPGA_CMD_SET_DIVISOR, i);
 		SpinDelay(20);
-		// Vref = 3.3V, and a 10000:240 voltage divider on the input
-		// can measure voltages up to 137500 mV
-		adcval = ((137500 * AvgAdc(ADC_CHAN_LF)) >> 10);
+		adcval = ((MAX_ADC_LF_VOLTAGE * AvgAdc(ADC_CHAN_LF)) >> 10);
 		if (i==95) 	vLf125 = adcval; // voltage at 125Khz
 		if (i==89) 	vLf134 = adcval; // voltage at 134Khz
 
-		dest[i] = adcval>>8; // scale int to fit in byte for graphing purposes
-		if(dest[i] > peak) {
+		LF_Results[i] = adcval>>8; // scale int to fit in byte for graphing purposes
+		if(LF_Results[i] > peak) {
 			peakv = adcval;
-			peak = dest[i];
+			peak = LF_Results[i];
 			peakf = i;
-			ptr = i;
+			//ptr = i;
 		}
 	}
 
+	for (i=18; i >= 0; i--) LF_Results[i] = 0;
+	
+	LED_A_ON();
 	// Let the FPGA drive the high-frequency antenna around 13.56 MHz.
+  	FpgaDownloadAndGo(FPGA_BITSTREAM_HF);
 	FpgaWriteConfWord(FPGA_MAJOR_MODE_HF_READER_RX_XCORR);
 	SpinDelay(20);
-	// Vref = 3300mV, and an 10:1 voltage divider on the input
-	// can measure voltages up to 33000 mV
-	vHf = (33000 * AvgAdc(ADC_CHAN_HF)) >> 10;
-
-	c.cmd = CMD_MEASURED_ANTENNA_TUNING;
-	c.arg[0] = (vLf125 << 0) | (vLf134 << 16);
-	c.arg[1] = vHf;
-	c.arg[2] = peakf | (peakv << 16);
-	UsbSendPacket((uint8_t *)&c, sizeof(c));
+	vHf = (MAX_ADC_HF_VOLTAGE * AvgAdc(ADC_CHAN_HF)) >> 10;
+
+	cmd_send(CMD_MEASURED_ANTENNA_TUNING, vLf125 | (vLf134<<16), vHf, peakf | (peakv<<16), LF_Results, 256);
+	FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
+	LED_A_OFF();
+	LED_B_OFF();
+	return;
 }
 
 void MeasureAntennaTuningHf(void)
@@ -241,67 +239,24 @@ void MeasureAntennaTuningHf(void)
 
 	DbpString("Measuring HF antenna, press button to exit");
 
+	// Let the FPGA drive the high-frequency antenna around 13.56 MHz.
+	FpgaDownloadAndGo(FPGA_BITSTREAM_HF);
+	FpgaWriteConfWord(FPGA_MAJOR_MODE_HF_READER_RX_XCORR);
+
 	for (;;) {
-		// Let the FPGA drive the high-frequency antenna around 13.56 MHz.
-		FpgaWriteConfWord(FPGA_MAJOR_MODE_HF_READER_RX_XCORR);
 		SpinDelay(20);
-		// Vref = 3300mV, and an 10:1 voltage divider on the input
-		// can measure voltages up to 33000 mV
-		vHf = (33000 * AvgAdc(ADC_CHAN_HF)) >> 10;
+		vHf = (MAX_ADC_HF_VOLTAGE * AvgAdc(ADC_CHAN_HF)) >> 10;
 
 		Dbprintf("%d mV",vHf);
 		if (BUTTON_PRESS()) break;
 	}
 	DbpString("cancelled");
-}
-
 
-void SimulateTagHfListen(void)
-{
-	uint8_t *dest = (uint8_t *)BigBuf;
-	int n = sizeof(BigBuf);
-	uint8_t v = 0;
-	int i;
-	int p = 0;
-
-	// We're using this mode just so that I can test it out; the simulated
-	// tag mode would work just as well and be simpler.
-	FpgaWriteConfWord(FPGA_MAJOR_MODE_HF_READER_RX_XCORR | FPGA_HF_READER_RX_XCORR_848_KHZ | FPGA_HF_READER_RX_XCORR_SNOOP);
-
-	// We need to listen to the high-frequency, peak-detected path.
-	SetAdcMuxFor(GPIO_MUXSEL_HIPKD);
-
-	FpgaSetupSsc();
-
-	i = 0;
-	for(;;) {
-		if(AT91C_BASE_SSC->SSC_SR & (AT91C_SSC_TXRDY)) {
-			AT91C_BASE_SSC->SSC_THR = 0xff;
-		}
-		if(AT91C_BASE_SSC->SSC_SR & (AT91C_SSC_RXRDY)) {
-			uint8_t r = (uint8_t)AT91C_BASE_SSC->SSC_RHR;
+	FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
 
-			v <<= 1;
-			if(r & 1) {
-				v |= 1;
-			}
-			p++;
-
-			if(p >= 8) {
-				dest[i] = v;
-				v = 0;
-				p = 0;
-				i++;
-
-				if(i >= n) {
-					break;
-				}
-			}
-		}
-	}
-	DbpString("simulate tag (now type bitsamples)");
 }
 
+
 void ReadMem(int addr)
 {
 	const uint8_t *data = ((uint8_t *)addr);
@@ -313,11 +268,11 @@ void ReadMem(int addr)
 /* osimage version information is linked in */
 extern struct version_information version_information;
 /* bootrom version information is pointed to from _bootphase1_version_pointer */
-extern char *_bootphase1_version_pointer, _flash_start, _flash_end;
+extern char *_bootphase1_version_pointer, _flash_start, _flash_end, _bootrom_start, _bootrom_end, __data_src_start__;
 void SendVersion(void)
 {
-	char temp[48]; /* Limited data payload in USB packets */
-	DbpString("Prox/RFID mark3 RFID instrument");
+	char temp[USB_CMD_DATA_SIZE]; /* Limited data payload in USB packets */
+	char VersionString[USB_CMD_DATA_SIZE] = { '\0' };
 
 	/* Try to find the bootrom version information. Expect to find a pointer at
 	 * symbol _bootphase1_version_pointer, perform slight sanity checks on the
@@ -325,30 +280,79 @@ void SendVersion(void)
 	 */
 	char *bootrom_version = *(char**)&_bootphase1_version_pointer;
 	if( bootrom_version < &_flash_start || bootrom_version >= &_flash_end ) {
-		DbpString("bootrom version information appears invalid");
+		strcat(VersionString, "bootrom version information appears invalid\n");
 	} else {
 		FormatVersionInformation(temp, sizeof(temp), "bootrom: ", bootrom_version);
-		DbpString(temp);
+		strncat(VersionString, temp, sizeof(VersionString) - strlen(VersionString) - 1);
 	}
 
 	FormatVersionInformation(temp, sizeof(temp), "os: ", &version_information);
-	DbpString(temp);
+	strncat(VersionString, temp, sizeof(VersionString) - strlen(VersionString) - 1);
+
+	FpgaGatherVersion(FPGA_BITSTREAM_LF, temp, sizeof(temp));
+	strncat(VersionString, temp, sizeof(VersionString) - strlen(VersionString) - 1);
+	FpgaGatherVersion(FPGA_BITSTREAM_HF, temp, sizeof(temp));
+	strncat(VersionString, temp, sizeof(VersionString) - strlen(VersionString) - 1);
 
-	FpgaGatherVersion(temp, sizeof(temp));
-	DbpString(temp);
+	// Send Chip ID and used flash memory
+	uint32_t text_and_rodata_section_size = (uint32_t)&__data_src_start__ - (uint32_t)&_flash_start;
+	uint32_t compressed_data_section_size = common_area.arg1;
+	cmd_send(CMD_ACK, *(AT91C_DBGU_CIDR), text_and_rodata_section_size + compressed_data_section_size, 0, VersionString, strlen(VersionString));
 }
 
-#ifdef WITH_LF
-// samy's sniff and repeat routine
-void SamyRun()
+// measure the USB Speed by sending SpeedTestBufferSize bytes to client and measuring the elapsed time.
+// Note: this mimics GetFromBigbuf(), i.e. we have the overhead of the UsbCommand structure included.
+void printUSBSpeed(void) 
 {
-	DbpString("Stand-alone mode! No PC necessary.");
+	Dbprintf("USB Speed:");
+	Dbprintf("  Sending USB packets to client...");
 
-	// 3 possible options? no just 2 for now
-#define OPTS 2
+	#define USB_SPEED_TEST_MIN_TIME	1500	// in milliseconds
+	uint8_t *test_data = BigBuf_get_addr();
+	uint32_t end_time;
 
-	int high[OPTS], low[OPTS];
+	uint32_t start_time = end_time = GetTickCount();
+	uint32_t bytes_transferred = 0;
+	
+	LED_B_ON();
+	while(end_time < start_time + USB_SPEED_TEST_MIN_TIME) {
+		cmd_send(CMD_DOWNLOADED_RAW_ADC_SAMPLES_125K, 0, USB_CMD_DATA_SIZE, 0, test_data, USB_CMD_DATA_SIZE);
+		end_time = GetTickCount();
+		bytes_transferred += USB_CMD_DATA_SIZE;
+	}
+	LED_B_OFF();
+
+	Dbprintf("  Time elapsed:      %dms", end_time - start_time);
+	Dbprintf("  Bytes transferred: %d", bytes_transferred);
+	Dbprintf("  USB Transfer Speed PM3 -> Client = %d Bytes/s", 
+		1000 * bytes_transferred / (end_time - start_time));
+
+}
+	
+/**
+  * Prints runtime information about the PM3.
+**/
+void SendStatus(void)
+{
+	BigBuf_print_status();
+	Fpga_print_status();
+	printConfig(); //LF Sampling config
+	printUSBSpeed();
+	Dbprintf("Various");
+	Dbprintf("  MF_DBGLEVEL......%d", MF_DBGLEVEL);
+	Dbprintf("  ToSendMax........%d",ToSendMax);
+	Dbprintf("  ToSendBit........%d",ToSendBit);
+
+	cmd_send(CMD_ACK,1,0,0,0,0);
+}
+
+#if defined(WITH_ISO14443a_StandAlone) || defined(WITH_LF)
+
+#define OPTS 2
 
+void StandAloneMode()
+{
+	DbpString("Stand-alone mode! No PC necessary.");
 	// Oooh pretty -- notify user we're in elite samy mode now
 	LED(LED_RED,	200);
 	LED(LED_ORANGE, 200);
@@ -360,15 +364,280 @@ void SamyRun()
 	LED(LED_ORANGE, 200);
 	LED(LED_RED,	200);
 
+}
+
+#endif
+
+
+
+#ifdef WITH_ISO14443a_StandAlone
+void StandAloneMode14a()
+{
+	StandAloneMode();
+	FpgaDownloadAndGo(FPGA_BITSTREAM_HF);
+
+	int selected = 0;
+	int playing = 0, iGotoRecord = 0, iGotoClone = 0;
+	int cardRead[OPTS] = {0};
+	uint8_t readUID[10] = {0};
+	uint32_t uid_1st[OPTS]={0};
+	uint32_t uid_2nd[OPTS]={0};
+	uint32_t uid_tmp1 = 0;
+	uint32_t uid_tmp2 = 0;
+	iso14a_card_select_t hi14a_card[OPTS];
+
+	LED(selected + 1, 0);
+
+	for (;;)
+	{
+		usb_poll();
+		WDT_HIT();
+		SpinDelay(300);
+
+		if (iGotoRecord == 1 || cardRead[selected] == 0)
+		{
+			iGotoRecord = 0;
+			LEDsoff();
+			LED(selected + 1, 0);
+			LED(LED_RED2, 0);
+
+			// record
+			Dbprintf("Enabling iso14443a reader mode for [Bank: %u]...", selected);
+			/* need this delay to prevent catching some weird data */
+			SpinDelay(500);
+			/* Code for reading from 14a tag */
+			uint8_t uid[10]  ={0};
+			uint32_t cuid;
+			iso14443a_setup(FPGA_HF_ISO14443A_READER_MOD);
+
+			for ( ; ; )
+			{
+				WDT_HIT();
+				if (BUTTON_PRESS()) {
+					if (cardRead[selected]) {
+						Dbprintf("Button press detected -- replaying card in bank[%d]", selected);
+						break;
+					}
+					else if (cardRead[(selected+1)%OPTS]) {
+						Dbprintf("Button press detected but no card in bank[%d] so playing from bank[%d]", selected, (selected+1)%OPTS);
+						selected = (selected+1)%OPTS;
+						break; // playing = 1;
+					}
+					else {
+						Dbprintf("Button press detected but no stored tag to play. (Ignoring button)");
+						SpinDelay(300);
+					}
+				}
+				if (!iso14443a_select_card(uid, &hi14a_card[selected], &cuid))
+					continue;
+				else
+				{
+					Dbprintf("Read UID:"); Dbhexdump(10,uid,0);
+					memcpy(readUID,uid,10*sizeof(uint8_t));
+					uint8_t *dst = (uint8_t *)&uid_tmp1;
+					// Set UID byte order
+					for (int i=0; i<4; i++)
+						dst[i] = uid[3-i];
+					dst = (uint8_t *)&uid_tmp2;
+					for (int i=0; i<4; i++)
+						dst[i] = uid[7-i];
+					if (uid_1st[(selected+1)%OPTS] == uid_tmp1 && uid_2nd[(selected+1)%OPTS] == uid_tmp2) {
+						Dbprintf("Card selected has same UID as what is stored in the other bank. Skipping.");
+					}
+					else {
+						if (uid_tmp2) {
+							Dbprintf("Bank[%d] received a 7-byte UID",selected);
+							uid_1st[selected] = (uid_tmp1)>>8;
+							uid_2nd[selected] = (uid_tmp1<<24) + (uid_tmp2>>8);
+						}
+						else {
+							Dbprintf("Bank[%d] received a 4-byte UID",selected);
+							uid_1st[selected] = uid_tmp1;
+							uid_2nd[selected] = uid_tmp2;
+						}
+						break;
+					}
+				}
+			}
+			Dbprintf("ATQA = %02X%02X",hi14a_card[selected].atqa[0],hi14a_card[selected].atqa[1]);
+			Dbprintf("SAK = %02X",hi14a_card[selected].sak);
+			LEDsoff();
+			LED(LED_GREEN,  200);
+			LED(LED_ORANGE, 200);
+			LED(LED_GREEN,  200);
+			LED(LED_ORANGE, 200);
+
+			LEDsoff();
+			LED(selected + 1, 0);
+
+			// Next state is replay:
+			playing = 1;
+
+			cardRead[selected] = 1;
+		}
+		/* MF Classic UID clone */
+		else if (iGotoClone==1)
+		{
+			iGotoClone=0;
+			LEDsoff();
+			LED(selected + 1, 0);
+			LED(LED_ORANGE, 250);
+
+
+			// record
+			Dbprintf("Preparing to Clone card [Bank: %x]; uid: %08x", selected, uid_1st[selected]);
+
+			// wait for button to be released
+			while(BUTTON_PRESS())
+			{
+				// Delay cloning until card is in place
+				WDT_HIT();
+			}
+			Dbprintf("Starting clone. [Bank: %u]", selected);
+			// need this delay to prevent catching some weird data
+			SpinDelay(500);
+			// Begin clone function here:
+			/* Example from client/mifarehost.c for commanding a block write for "magic Chinese" cards:
+					UsbCommand c = {CMD_MIFARE_CSETBLOCK, {wantWipe, params & (0xFE | (uid == NULL ? 0:1)), blockNo}};
+					memcpy(c.d.asBytes, data, 16);
+					SendCommand(&c);
+
+					Block read is similar:
+					UsbCommand c = {CMD_MIFARE_CGETBLOCK, {params, 0, blockNo}};
+					We need to imitate that call with blockNo 0 to set a uid.
+
+					The get and set commands are handled in this file:
+					// Work with "magic Chinese" card
+					case CMD_MIFARE_CSETBLOCK:
+						MifareCSetBlock(c->arg[0], c->arg[1], c->arg[2], c->d.asBytes);
+						break;
+					case CMD_MIFARE_CGETBLOCK:
+						MifareCGetBlock(c->arg[0], c->arg[1], c->arg[2], c->d.asBytes);
+						break;
+
+				mfCSetUID provides example logic for UID set workflow:
+					-Read block0 from card in field with MifareCGetBlock()
+					-Configure new values without replacing reserved bytes
+							memcpy(block0, uid, 4); // Copy UID bytes from byte array
+							// Mifare UID BCC
+							block0[4] = block0[0]^block0[1]^block0[2]^block0[3]; // BCC on byte 5
+							Bytes 5-7 are reserved SAK and ATQA for mifare classic
+					-Use mfCSetBlock(0, block0, oldUID, wantWipe, CSETBLOCK_SINGLE_OPER) to write it
+			*/
+			uint8_t oldBlock0[16] = {0}, newBlock0[16] = {0}, testBlock0[16] = {0};
+			// arg0 = Flags == CSETBLOCK_SINGLE_OPER=0x1F, arg1=returnSlot, arg2=blockNo
+			MifareCGetBlock(0x3F, 1, 0, oldBlock0);
+			if (oldBlock0[0] == 0 && oldBlock0[0] == oldBlock0[1]  && oldBlock0[1] == oldBlock0[2] && oldBlock0[2] == oldBlock0[3]) {
+				Dbprintf("No changeable tag detected. Returning to replay mode for bank[%d]", selected);
+				playing = 1;
+			}
+			else {
+				Dbprintf("UID from target tag: %02X%02X%02X%02X", oldBlock0[0],oldBlock0[1],oldBlock0[2],oldBlock0[3]);
+				memcpy(newBlock0,oldBlock0,16);
+				// Copy uid_1st for bank (2nd is for longer UIDs not supported if classic)
+
+				newBlock0[0] = uid_1st[selected]>>24;
+				newBlock0[1] = 0xFF & (uid_1st[selected]>>16);
+				newBlock0[2] = 0xFF & (uid_1st[selected]>>8);
+				newBlock0[3] = 0xFF & (uid_1st[selected]);
+				newBlock0[4] = newBlock0[0]^newBlock0[1]^newBlock0[2]^newBlock0[3];
+				// arg0 = needWipe, arg1 = workFlags, arg2 = blockNo, datain
+				MifareCSetBlock(0, 0xFF,0, newBlock0);
+				MifareCGetBlock(0x3F, 1, 0, testBlock0);
+				if (memcmp(testBlock0,newBlock0,16)==0)
+				{
+					DbpString("Cloned successfull!");
+					cardRead[selected] = 0; // Only if the card was cloned successfully should we clear it
+					playing = 0;
+					iGotoRecord = 1;
+					selected = (selected+1) % OPTS;
+				}
+				else {
+					Dbprintf("Clone failed. Back to replay mode on bank[%d]", selected);
+					playing = 1;
+				}
+			}
+			LEDsoff();
+			LED(selected + 1, 0);
+
+		}
+		// Change where to record (or begin playing)
+		else if (playing==1) // button_pressed == BUTTON_SINGLE_CLICK && cardRead[selected])
+		{
+			LEDsoff();
+			LED(selected + 1, 0);
+
+			// Begin transmitting
+			if (playing)
+			{
+				LED(LED_GREEN, 0);
+				DbpString("Playing");
+				for ( ; ; ) {
+					WDT_HIT();
+					int button_action = BUTTON_HELD(1000);
+					if (button_action == 0) { // No button action, proceed with sim
+						uint8_t data[512] = {0}; // in case there is a read command received we shouldn't break
+						Dbprintf("Simulating ISO14443a tag with uid[0]: %08x, uid[1]: %08x [Bank: %u]", uid_1st[selected],uid_2nd[selected],selected);
+						if (hi14a_card[selected].sak == 8 && hi14a_card[selected].atqa[0] == 4 && hi14a_card[selected].atqa[1] == 0) {
+							DbpString("Mifare Classic");
+							SimulateIso14443aTag(1,uid_1st[selected], uid_2nd[selected], data); // Mifare Classic
+						}
+						else if (hi14a_card[selected].sak == 0 && hi14a_card[selected].atqa[0] == 0x44 && hi14a_card[selected].atqa[1] == 0) {
+							DbpString("Mifare Ultralight");
+							SimulateIso14443aTag(2,uid_1st[selected],uid_2nd[selected],data); // Mifare Ultralight
+						}
+						else if (hi14a_card[selected].sak == 20 && hi14a_card[selected].atqa[0] == 0x44 && hi14a_card[selected].atqa[1] == 3) {
+							DbpString("Mifare DESFire");
+							SimulateIso14443aTag(3,uid_1st[selected],uid_2nd[selected],data); // Mifare DESFire
+						}
+						else {
+							Dbprintf("Unrecognized tag type -- defaulting to Mifare Classic emulation");
+							SimulateIso14443aTag(1,uid_1st[selected], uid_2nd[selected], data);
+						}
+					}
+					else if (button_action == BUTTON_SINGLE_CLICK) {
+						selected = (selected + 1) % OPTS;
+						Dbprintf("Done playing. Switching to record mode on bank %d",selected);
+						iGotoRecord = 1;
+						break;
+					}
+					else if (button_action == BUTTON_HOLD) {
+						Dbprintf("Playtime over. Begin cloning...");
+						iGotoClone = 1;
+						break;
+					}
+					WDT_HIT();
+				}
+
+				/* We pressed a button so ignore it here with a delay */
+				SpinDelay(300);
+				LEDsoff();
+				LED(selected + 1, 0);
+			}
+			else
+				while(BUTTON_PRESS())
+					WDT_HIT();
+		}
+	}
+}
+#elif WITH_LF
+// samy's sniff and repeat routine
+void SamyRun()
+{
+	StandAloneMode();
+	FpgaDownloadAndGo(FPGA_BITSTREAM_LF);
+
+	int high[OPTS], low[OPTS];
 	int selected = 0;
 	int playing = 0;
+	int cardRead = 0;
 
 	// Turn on selected LED
 	LED(selected + 1, 0);
 
 	for (;;)
 	{
-		UsbPoll(FALSE);
+		usb_poll();
 		WDT_HIT();
 
 		// Was our button held down or pressed?
@@ -376,7 +645,7 @@ void SamyRun()
 		SpinDelay(300);
 
 		// Button was held for a second, begin recording
-		if (button_pressed > 0)
+		if (button_pressed > 0 && cardRead == 0)
 		{
 			LEDsoff();
 			LED(selected + 1, 0);
@@ -393,7 +662,7 @@ void SamyRun()
 			SpinDelay(500);
 
 			CmdHIDdemodFSK(1, &high[selected], &low[selected], 0);
-			Dbprintf("Recorded %x %x %x", selected, high[selected], low[selected]);
+			Dbprintf("Recorded %x %x%08x", selected, high[selected], low[selected]);
 
 			LEDsoff();
 			LED(selected + 1, 0);
@@ -402,6 +671,40 @@ void SamyRun()
 			// If we were previously playing, set playing off
 			// so next button push begins playing what we recorded
 			playing = 0;
+			
+			cardRead = 1;
+	
+		}
+
+		else if (button_pressed > 0 && cardRead == 1)
+		{
+					LEDsoff();
+					LED(selected + 1, 0);
+					LED(LED_ORANGE, 0);
+
+					// record
+					Dbprintf("Cloning %x %x%08x", selected, high[selected], low[selected]);
+
+					// wait for button to be released
+					while(BUTTON_PRESS())
+						WDT_HIT();
+
+					/* need this delay to prevent catching some weird data */
+					SpinDelay(500);
+
+					CopyHIDtoT55x7(0, high[selected], low[selected], 0);
+					Dbprintf("Cloned %x %x%08x", selected, high[selected], low[selected]);
+
+					LEDsoff();
+					LED(selected + 1, 0);
+					// Finished recording
+
+					// If we were previously playing, set playing off
+					// so next button push begins playing what we recorded
+					playing = 0;
+					
+					cardRead = 0;
+			
 		}
 
 		// Change where to record (or begin playing)
@@ -423,7 +726,7 @@ void SamyRun()
 				// wait for button to be released
 				while(BUTTON_PRESS())
 					WDT_HIT();
-				Dbprintf("%x %x %x", selected, high[selected], low[selected]);
+				Dbprintf("%x %x%08x", selected, high[selected], low[selected]);
 				CmdHIDsimTAG(high[selected], low[selected], 0);
 				DbpString("Done playing");
 				if (BUTTON_HELD(1000) > 0)
@@ -448,8 +751,8 @@ void SamyRun()
 		}
 	}
 }
-#endif
 
+#endif
 /*
 OBJECTIVE
 Listen and detect an external reader. Determine the best location
@@ -489,26 +792,32 @@ static const int LIGHT_LEN = sizeof(LIGHT_SCHEME)/sizeof(LIGHT_SCHEME[0]);
 
 void ListenReaderField(int limit)
 {
-	int lf_av, lf_av_new, lf_baseline= 0, lf_count= 0, lf_max;
-	int hf_av, hf_av_new,  hf_baseline= 0, hf_count= 0, hf_max;
+	int lf_av, lf_av_new, lf_baseline= 0, lf_max;
+	int hf_av, hf_av_new,  hf_baseline= 0, hf_max;
 	int mode=1, display_val, display_max, i;
 
-#define LF_ONLY		1
-#define HF_ONLY		2
+#define LF_ONLY						1
+#define HF_ONLY						2
+#define REPORT_CHANGE			 	10    // report new values only if they have changed at least by REPORT_CHANGE
+
+
+	// switch off FPGA - we don't want to measure our own signal
+	FpgaDownloadAndGo(FPGA_BITSTREAM_HF);
+	FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
 
 	LEDsoff();
 
-	lf_av=lf_max=ReadAdc(ADC_CHAN_LF);
+	lf_av = lf_max = AvgAdc(ADC_CHAN_LF);
 
 	if(limit != HF_ONLY) {
-		Dbprintf("LF 125/134 Baseline: %d", lf_av);
+		Dbprintf("LF 125/134kHz Baseline: %dmV", (MAX_ADC_LF_VOLTAGE * lf_av) >> 10);
 		lf_baseline = lf_av;
 	}
 
-	hf_av=hf_max=ReadAdc(ADC_CHAN_HF);
+	hf_av = hf_max = AvgAdc(ADC_CHAN_HF);
 
 	if (limit != LF_ONLY) {
-		Dbprintf("HF 13.56 Baseline: %d", hf_av);
+		Dbprintf("HF 13.56MHz Baseline: %dmV", (MAX_ADC_HF_VOLTAGE * hf_av) >> 10);
 		hf_baseline = hf_av;
 	}
 
@@ -531,38 +840,38 @@ void ListenReaderField(int limit)
 		WDT_HIT();
 
 		if (limit != HF_ONLY) {
-			if(mode==1) {
-				if (abs(lf_av - lf_baseline) > 10) LED_D_ON();
-				else                               LED_D_OFF();
+			if(mode == 1) {
+				if (abs(lf_av - lf_baseline) > REPORT_CHANGE) 
+					LED_D_ON();
+				else
+					LED_D_OFF();
 			}
 
-			++lf_count;
-			lf_av_new= ReadAdc(ADC_CHAN_LF);
+			lf_av_new = AvgAdc(ADC_CHAN_LF);
 			// see if there's a significant change
-			if(abs(lf_av - lf_av_new) > 10) {
-				Dbprintf("LF 125/134 Field Change: %x %x %x", lf_av, lf_av_new, lf_count);
+			if(abs(lf_av - lf_av_new) > REPORT_CHANGE) {
+				Dbprintf("LF 125/134kHz Field Change: %5dmV", (MAX_ADC_LF_VOLTAGE * lf_av_new) >> 10);
 				lf_av = lf_av_new;
 				if (lf_av > lf_max)
 					lf_max = lf_av;
-				lf_count= 0;
 			}
 		}
 
 		if (limit != LF_ONLY) {
 			if (mode == 1){
-				if (abs(hf_av - hf_baseline) > 10) LED_B_ON();
-				else                               LED_B_OFF();
+				if (abs(hf_av - hf_baseline) > REPORT_CHANGE) 	
+					LED_B_ON();
+				else
+					LED_B_OFF();
 			}
 
-			++hf_count;
-			hf_av_new= ReadAdc(ADC_CHAN_HF);
+			hf_av_new = AvgAdc(ADC_CHAN_HF);
 			// see if there's a significant change
-			if(abs(hf_av - hf_av_new) > 10) {
-				Dbprintf("HF 13.56 Field Change: %x %x %x", hf_av, hf_av_new, hf_count);
+			if(abs(hf_av - hf_av_new) > REPORT_CHANGE) {
+				Dbprintf("HF 13.56MHz Field Change: %5dmV", (MAX_ADC_HF_VOLTAGE * hf_av_new) >> 10);
 				hf_av = hf_av_new;
 				if (hf_av > hf_max)
 					hf_max = hf_av;
-				hf_count= 0;
 			}
 		}
 
@@ -598,26 +907,49 @@ void ListenReaderField(int limit)
 void UsbPacketReceived(uint8_t *packet, int len)
 {
 	UsbCommand *c = (UsbCommand *)packet;
-	UsbCommand ack;
-	ack.cmd = CMD_ACK;
 
+//  Dbprintf("received %d bytes, with command: 0x%04x and args: %d %d %d",len,c->cmd,c->arg[0],c->arg[1],c->arg[2]);
+  
 	switch(c->cmd) {
 #ifdef WITH_LF
+		case CMD_SET_LF_SAMPLING_CONFIG:
+			setSamplingConfig((sample_config *) c->d.asBytes);
+			break;
 		case CMD_ACQUIRE_RAW_ADC_SAMPLES_125K:
-			AcquireRawAdcSamples125k(c->arg[0]);
-			UsbSendPacket((uint8_t*)&ack, sizeof(ack));
+			cmd_send(CMD_ACK,SampleLF(c->arg[0]),0,0,0,0);
 			break;
 		case CMD_MOD_THEN_ACQUIRE_RAW_ADC_SAMPLES_125K:
 			ModThenAcquireRawAdcSamples125k(c->arg[0],c->arg[1],c->arg[2],c->d.asBytes);
 			break;
+		case CMD_LF_SNOOP_RAW_ADC_SAMPLES:
+			cmd_send(CMD_ACK,SnoopLF(),0,0,0,0);
+			break;
 		case CMD_HID_DEMOD_FSK:
-			CmdHIDdemodFSK(0, 0, 0, 1);				// Demodulate HID tag
+			CmdHIDdemodFSK(c->arg[0], 0, 0, 1);
 			break;
 		case CMD_HID_SIM_TAG:
-			CmdHIDsimTAG(c->arg[0], c->arg[1], 1);					// Simulate HID tag by ID
+			CmdHIDsimTAG(c->arg[0], c->arg[1], 1);
+			break;
+		case CMD_FSK_SIM_TAG:
+			CmdFSKsimTAG(c->arg[0], c->arg[1], c->arg[2], c->d.asBytes);
+			break;
+		case CMD_ASK_SIM_TAG:
+			CmdASKsimTag(c->arg[0], c->arg[1], c->arg[2], c->d.asBytes);
+			break;
+		case CMD_PSK_SIM_TAG:
+			CmdPSKsimTag(c->arg[0], c->arg[1], c->arg[2], c->d.asBytes);
 			break;
 		case CMD_HID_CLONE_TAG:
-			CopyHIDtoT5567(c->arg[0], c->arg[1]);					// Clone HID tag by ID to T55x7
+			CopyHIDtoT55x7(c->arg[0], c->arg[1], c->arg[2], c->d.asBytes[0]);
+			break;
+		case CMD_IO_DEMOD_FSK:
+			CmdIOdemodFSK(c->arg[0], 0, 0, 1);
+			break;
+		case CMD_IO_CLONE_TAG:
+			CopyIOtoT55x7(c->arg[0], c->arg[1]);
+			break;
+		case CMD_EM410X_DEMOD:
+			CmdEM410xdemod(c->arg[0], 0, 0, 1);
 			break;
 		case CMD_EM410X_WRITE_TAG:
 			WriteEM410x(c->arg[0], c->arg[1], c->arg[2]);
@@ -636,6 +968,54 @@ void UsbPacketReceived(uint8_t *packet, int len)
 		case CMD_LF_SIMULATE_BIDIR:
 			SimulateTagLowFrequencyBidir(c->arg[0], c->arg[1]);
 			break;
+		case CMD_INDALA_CLONE_TAG:
+			CopyIndala64toT55x7(c->arg[0], c->arg[1]);					
+			break;
+		case CMD_INDALA_CLONE_TAG_L:
+			CopyIndala224toT55x7(c->d.asDwords[0], c->d.asDwords[1], c->d.asDwords[2], c->d.asDwords[3], c->d.asDwords[4], c->d.asDwords[5], c->d.asDwords[6]);
+			break;
+		case CMD_T55XX_READ_BLOCK:
+			T55xxReadBlock(c->arg[0], c->arg[1], c->arg[2]);
+			break;
+		case CMD_T55XX_WRITE_BLOCK:
+			T55xxWriteBlock(c->arg[0], c->arg[1], c->arg[2], c->d.asBytes[0]);
+			break;
+		case CMD_T55XX_WAKEUP:
+			T55xxWakeUp(c->arg[0]);
+			break;
+		case CMD_T55XX_RESET_READ:
+			T55xxResetRead();
+			break;
+		case CMD_PCF7931_READ:
+			ReadPCF7931();
+			break;
+		case CMD_PCF7931_WRITE:
+			WritePCF7931(c->d.asBytes[0],c->d.asBytes[1],c->d.asBytes[2],c->d.asBytes[3],c->d.asBytes[4],c->d.asBytes[5],c->d.asBytes[6], c->d.asBytes[9], c->d.asBytes[7]-128,c->d.asBytes[8]-128, c->arg[0], c->arg[1], c->arg[2]);
+			break;
+		case CMD_EM4X_READ_WORD:
+			EM4xReadWord(c->arg[1], c->arg[2],c->d.asBytes[0]);
+			break;
+		case CMD_EM4X_WRITE_WORD:
+			EM4xWriteWord(c->arg[0], c->arg[1], c->arg[2], c->d.asBytes[0]);
+			break;
+		case CMD_AWID_DEMOD_FSK: // Set realtime AWID demodulation
+			CmdAWIDdemodFSK(c->arg[0], 0, 0, 1);
+			break;
+		case CMD_VIKING_CLONE_TAG:
+			CopyVikingtoT55xx(c->arg[0], c->arg[1], c->arg[2]);
+			break;
+#endif
+
+#ifdef WITH_HITAG
+		case CMD_SNOOP_HITAG: // Eavesdrop Hitag tag, args = type
+			SnoopHitag(c->arg[0]);
+			break;
+		case CMD_SIMULATE_HITAG: // Simulate Hitag tag, args = memory content
+			SimulateHitagTag((bool)c->arg[0],(byte_t*)c->d.asBytes);
+			break;
+		case CMD_READER_HITAG: // Reader for Hitag tags, args = type and function
+			ReaderHitag((hitag_function)c->arg[0],(hitag_data*)c->d.asBytes);
+			break;
 #endif
 
 #ifdef WITH_ISO15693
@@ -662,7 +1042,7 @@ void UsbPacketReceived(uint8_t *packet, int len)
 			ReaderIso15693(c->arg[0]);
 			break;
 		case CMD_SIMTAG_ISO_15693:
-			SimTagIso15693(c->arg[0]);
+			SimTagIso15693(c->arg[0], c->d.asBytes);
 			break;
 #endif
 
@@ -681,32 +1061,39 @@ void UsbPacketReceived(uint8_t *packet, int len)
 #endif
 
 #ifdef WITH_ISO14443b
-		case CMD_ACQUIRE_RAW_ADC_SAMPLES_ISO_14443:
-			AcquireRawAdcSamplesIso14443(c->arg[0]);
-			break;
 		case CMD_READ_SRI512_TAG:
-			ReadSRI512Iso14443(c->arg[0]);
+			ReadSTMemoryIso14443b(0x0F);
 			break;
 		case CMD_READ_SRIX4K_TAG:
-			ReadSRIX4KIso14443(c->arg[0]);
+			ReadSTMemoryIso14443b(0x7F);
+			break;
+		case CMD_SNOOP_ISO_14443B:
+			SnoopIso14443b();
 			break;
-		case CMD_SNOOP_ISO_14443:
-			SnoopIso14443();
+		case CMD_SIMULATE_TAG_ISO_14443B:
+			SimulateIso14443bTag();
 			break;
-		case CMD_SIMULATE_TAG_ISO_14443:
-			SimulateIso14443Tag();
+		case CMD_ISO_14443B_COMMAND:
+			SendRawCommand14443B(c->arg[0],c->arg[1],c->arg[2],c->d.asBytes);
 			break;
 #endif
 
 #ifdef WITH_ISO14443a
 		case CMD_SNOOP_ISO_14443a:
-			SnoopIso14443a();
+			SnoopIso14443a(c->arg[0]);
 			break;
 		case CMD_READER_ISO_14443a:
-			ReaderIso14443a(c, &ack);
+			ReaderIso14443a(c);
 			break;
 		case CMD_SIMULATE_TAG_ISO_14443a:
-			SimulateIso14443aTag(c->arg[0], c->arg[1]);  // ## Simulate iso14443a tag - pass tag type & UID
+			SimulateIso14443aTag(c->arg[0], c->arg[1], c->arg[2], c->d.asBytes);  // ## Simulate iso14443a tag - pass tag type & UID
+			break;
+			
+		case CMD_EPA_PACE_COLLECT_NONCE:
+			EPA_PACE_Collect_Nonce(c);
+			break;
+		case CMD_EPA_PACE_REPLAY:
+			EPA_PACE_Replay(c);
 			break;
 			
 		case CMD_READER_MIFARE:
@@ -715,12 +1102,30 @@ void UsbPacketReceived(uint8_t *packet, int len)
 		case CMD_MIFARE_READBL:
 			MifareReadBlock(c->arg[0], c->arg[1], c->arg[2], c->d.asBytes);
 			break;
+		case CMD_MIFAREU_READBL:
+			MifareUReadBlock(c->arg[0],c->arg[1], c->d.asBytes);
+			break;
+		case CMD_MIFAREUC_AUTH:
+			MifareUC_Auth(c->arg[0],c->d.asBytes);
+			break;
+		case CMD_MIFAREU_READCARD:
+			MifareUReadCard(c->arg[0], c->arg[1], c->arg[2], c->d.asBytes);
+			break;
+		case CMD_MIFAREUC_SETPWD: 
+			MifareUSetPwd(c->arg[0], c->d.asBytes);
+			break;
 		case CMD_MIFARE_READSC:
 			MifareReadSector(c->arg[0], c->arg[1], c->arg[2], c->d.asBytes);
 			break;
 		case CMD_MIFARE_WRITEBL:
 			MifareWriteBlock(c->arg[0], c->arg[1], c->arg[2], c->d.asBytes);
 			break;
+		//case CMD_MIFAREU_WRITEBL_COMPAT:
+			//MifareUWriteBlockCompat(c->arg[0], c->d.asBytes);
+			//break;
+		case CMD_MIFAREU_WRITEBL:
+			MifareUWriteBlock(c->arg[0], c->arg[1], c->d.asBytes);
+			break;
 		case CMD_MIFARE_NESTED:
 			MifareNested(c->arg[0], c->arg[1], c->arg[2], c->d.asBytes);
 			break;
@@ -747,6 +1152,23 @@ void UsbPacketReceived(uint8_t *packet, int len)
 		case CMD_MIFARE_EML_CARDLOAD:
 			MifareECardLoad(c->arg[0], c->arg[1], c->arg[2], c->d.asBytes);
 			break;
+			
+		// Work with "magic Chinese" card
+		case CMD_MIFARE_CSETBLOCK:
+			MifareCSetBlock(c->arg[0], c->arg[1], c->arg[2], c->d.asBytes);
+			break;
+		case CMD_MIFARE_CGETBLOCK:
+			MifareCGetBlock(c->arg[0], c->arg[1], c->arg[2], c->d.asBytes);
+			break;
+		case CMD_MIFARE_CIDENT:
+			MifareCIdent();
+			break;
+			
+		// mifare sniffer
+		case CMD_MIFARE_SNIFFER:
+			SniffMifare(c->arg[0]);
+			break;
+
 #endif
 
 #ifdef WITH_ICLASS
@@ -754,14 +1176,45 @@ void UsbPacketReceived(uint8_t *packet, int len)
 		case CMD_SNOOP_ICLASS:
 			SnoopIClass();
 			break;
+		case CMD_SIMULATE_TAG_ICLASS:
+			SimulateIClass(c->arg[0], c->arg[1], c->arg[2], c->d.asBytes);
+			break;
+		case CMD_READER_ICLASS:
+			ReaderIClass(c->arg[0]);
+			break;
+		case CMD_READER_ICLASS_REPLAY:
+			ReaderIClass_Replay(c->arg[0], c->d.asBytes);
+			break;
+		case CMD_ICLASS_EML_MEMSET:
+			emlSet(c->d.asBytes,c->arg[0], c->arg[1]);
+			break;
+		case CMD_ICLASS_WRITEBLOCK:
+			iClass_WriteBlock(c->arg[0], c->d.asBytes);
+			break;
+		case CMD_ICLASS_READCHECK:  // auth step 1
+			iClass_ReadCheck(c->arg[0], c->arg[1]);
+			break;
+		case CMD_ICLASS_READBLOCK:
+			iClass_ReadBlk(c->arg[0]);
+			break;
+		case CMD_ICLASS_AUTHENTICATION: //check
+			iClass_Authentication(c->d.asBytes);
+			break;
+		case CMD_ICLASS_DUMP:
+			iClass_Dump(c->arg[0], c->arg[1]);
+			break;
+		case CMD_ICLASS_CLONE:
+			iClass_Clone(c->arg[0], c->arg[1], c->d.asBytes);
+			break;
 #endif
-
-		case CMD_SIMULATE_TAG_HF_LISTEN:
-			SimulateTagHfListen();
+#ifdef WITH_HFSNOOP
+		case CMD_HF_SNIFFER:
+			HfSnoop(c->arg[0], c->arg[1]);
 			break;
+#endif
 
 		case CMD_BUFF_CLEAR:
-			BufferClear();
+			BigBuf_Clear();
 			break;
 
 		case CMD_MEASURE_ANTENNA_TUNING:
@@ -782,34 +1235,31 @@ void UsbPacketReceived(uint8_t *packet, int len)
 			LED_D_OFF(); // LED D indicates field ON or OFF
 			break;
 
-		case CMD_DOWNLOAD_RAW_ADC_SAMPLES_125K: {
-			UsbCommand n;
-			if(c->cmd == CMD_DOWNLOAD_RAW_ADC_SAMPLES_125K) {
-				n.cmd = CMD_DOWNLOADED_RAW_ADC_SAMPLES_125K;
-			} else {
-				n.cmd = CMD_DOWNLOADED_RAW_BITS_TI_TYPE;
-			}
-			n.arg[0] = c->arg[0];
-			memcpy(n.d.asDwords, BigBuf+c->arg[0], 12*sizeof(uint32_t));
+		case CMD_DOWNLOAD_RAW_ADC_SAMPLES_125K:
+
 			LED_B_ON();
-			UsbSendPacket((uint8_t *)&n, sizeof(n));
+			uint8_t *BigBuf = BigBuf_get_addr();
+			for(size_t i=0; i<c->arg[1]; i += USB_CMD_DATA_SIZE) {
+				size_t len = MIN((c->arg[1] - i),USB_CMD_DATA_SIZE);
+				cmd_send(CMD_DOWNLOADED_RAW_ADC_SAMPLES_125K,i,len,BigBuf_get_traceLen(),BigBuf+c->arg[0]+i,len);
+			}
+			// Trigger a finish downloading signal with an ACK frame
+			cmd_send(CMD_ACK,1,0,BigBuf_get_traceLen(),getSamplingConfig(),sizeof(sample_config));
 			LED_B_OFF();
 			break;
-		}
 
 		case CMD_DOWNLOADED_SIM_SAMPLES_125K: {
-			uint8_t *b = (uint8_t *)BigBuf;
-			memcpy(b+c->arg[0], c->d.asBytes, 48);
-			//Dbprintf("copied 48 bytes to %i",b+c->arg[0]);
-			UsbSendPacket((uint8_t*)&ack, sizeof(ack));
+			uint8_t *b = BigBuf_get_addr();
+			memcpy(b+c->arg[0], c->d.asBytes, USB_CMD_DATA_SIZE);
+			cmd_send(CMD_ACK,0,0,0,0,0);
 			break;
-		}
-
+		}	
 		case CMD_READ_MEM:
 			ReadMem(c->arg[0]);
 			break;
 
 		case CMD_SET_LF_DIVISOR:
+		  	FpgaDownloadAndGo(FPGA_BITSTREAM_LF);
 			FpgaSendCommand(FPGA_CMD_SET_DIVISOR, c->arg[0]);
 			break;
 
@@ -825,11 +1275,12 @@ void UsbPacketReceived(uint8_t *packet, int len)
 		case CMD_VERSION:
 			SendVersion();
 			break;
-
-#ifdef WITH_LF
-
-#endif
-
+		case CMD_STATUS:
+			SendStatus();
+			break;
+		case CMD_PING:
+			cmd_send(CMD_ACK,0,0,0,0,0);
+			break;
 #ifdef WITH_LCD
 		case CMD_LCD_RESET:
 			LCDReset();
@@ -841,7 +1292,7 @@ void UsbPacketReceived(uint8_t *packet, int len)
 		case CMD_SETUP_WRITE:
 		case CMD_FINISH_WRITE:
 		case CMD_HARDWARE_RESET:
-			USB_D_PLUS_PULLUP_OFF();
+			usb_disable();
 			SpinDelay(1000);
 			SpinDelay(1000);
 			AT91C_BASE_RSTC->RSTC_RCR = RST_CONTROL_KEY | AT91C_RSTC_PROCRST;
@@ -854,19 +1305,17 @@ void UsbPacketReceived(uint8_t *packet, int len)
 			if(common_area.flags.bootrom_present) {
 				common_area.command = COMMON_AREA_COMMAND_ENTER_FLASH_MODE;
 			}
-			USB_D_PLUS_PULLUP_OFF();
+			usb_disable();
 			AT91C_BASE_RSTC->RSTC_RCR = RST_CONTROL_KEY | AT91C_RSTC_PROCRST;
 			for(;;);
 			break;
 
 		case CMD_DEVICE_INFO: {
-			UsbCommand c;
-			c.cmd = CMD_DEVICE_INFO;
-			c.arg[0] = DEVICE_INFO_FLAG_OSIMAGE_PRESENT | DEVICE_INFO_FLAG_CURRENT_MODE_OS;
-			if(common_area.flags.bootrom_present) c.arg[0] |= DEVICE_INFO_FLAG_BOOTROM_PRESENT;
-			UsbSendPacket((uint8_t*)&c, sizeof(c));
-		}
+			uint32_t dev_info = DEVICE_INFO_FLAG_OSIMAGE_PRESENT | DEVICE_INFO_FLAG_CURRENT_MODE_OS;
+			if(common_area.flags.bootrom_present) dev_info |= DEVICE_INFO_FLAG_BOOTROM_PRESENT;
+			cmd_send(CMD_DEVICE_INFO,dev_info,0,0,0,0);	
 			break;
+		}
 		default:
 			Dbprintf("%s: 0x%04x","unknown command:",c->cmd);
 			break;
@@ -876,7 +1325,7 @@ void UsbPacketReceived(uint8_t *packet, int len)
 void  __attribute__((noreturn)) AppMain(void)
 {
 	SpinDelay(100);
-
+	clear_trace();
 	if(common_area.magic != COMMON_AREA_MAGIC || common_area.version != 1) {
 		/* Initialize common area */
 		memset(&common_area, 0, sizeof(common_area));
@@ -890,7 +1339,8 @@ void  __attribute__((noreturn)) AppMain(void)
 	LED_B_OFF();
 	LED_A_OFF();
 
-	UsbStart();
+	// Init USB device
+  usb_enable();
 
 	// The FPGA gets its clock from us from PCK0 output, so set that up.
 	AT91C_BASE_PIOA->PIO_BSR = GPIO_PCK0;
@@ -898,7 +1348,7 @@ void  __attribute__((noreturn)) AppMain(void)
 	AT91C_BASE_PMC->PMC_SCER = AT91C_PMC_PCK0;
 	// PCK0 is PLL clock / 4 = 96Mhz / 4 = 24Mhz
 	AT91C_BASE_PMC->PMC_PCKR[0] = AT91C_PMC_CSS_PLL_CLK |
-		AT91C_PMC_PRES_CLK_4;
+		AT91C_PMC_PRES_CLK_4; //  4 for 24Mhz pck0, 2 for 48 MHZ pck0
 	AT91C_BASE_PIOA->PIO_OER = GPIO_PCK0;
 
 	// Reset SPI
@@ -907,43 +1357,38 @@ void  __attribute__((noreturn)) AppMain(void)
 	AT91C_BASE_SSC->SSC_CR = AT91C_SSC_SWRST;
 
 	// Load the FPGA image, which we have stored in our flash.
-	FpgaDownloadAndGo();
+	// (the HF version by default)
+	FpgaDownloadAndGo(FPGA_BITSTREAM_HF);
 
 	StartTickCount();
-	
+  	
 #ifdef WITH_LCD
-
 	LCDInit();
-
-	// test text on different colored backgrounds
-	LCDString(" The quick brown fox  ",	(char *)&FONT6x8,1,1+8*0,WHITE  ,BLACK );
-	LCDString("  jumped over the     ",	(char *)&FONT6x8,1,1+8*1,BLACK  ,WHITE );
-	LCDString("     lazy dog.        ",	(char *)&FONT6x8,1,1+8*2,YELLOW ,RED   );
-	LCDString(" AaBbCcDdEeFfGgHhIiJj ",	(char *)&FONT6x8,1,1+8*3,RED    ,GREEN );
-	LCDString(" KkLlMmNnOoPpQqRrSsTt ",	(char *)&FONT6x8,1,1+8*4,MAGENTA,BLUE  );
-	LCDString("UuVvWwXxYyZz0123456789",	(char *)&FONT6x8,1,1+8*5,BLUE   ,YELLOW);
-	LCDString("`-=[]_;',./~!@#$%^&*()",	(char *)&FONT6x8,1,1+8*6,BLACK  ,CYAN  );
-	LCDString("     _+{}|:\\\"<>?     ",(char *)&FONT6x8,1,1+8*7,BLUE  ,MAGENTA);
-
-	// color bands
-	LCDFill(0, 1+8* 8, 132, 8, BLACK);
-	LCDFill(0, 1+8* 9, 132, 8, WHITE);
-	LCDFill(0, 1+8*10, 132, 8, RED);
-	LCDFill(0, 1+8*11, 132, 8, GREEN);
-	LCDFill(0, 1+8*12, 132, 8, BLUE);
-	LCDFill(0, 1+8*13, 132, 8, YELLOW);
-	LCDFill(0, 1+8*14, 132, 8, CYAN);
-	LCDFill(0, 1+8*15, 132, 8, MAGENTA);
-
 #endif
 
+  byte_t rx[sizeof(UsbCommand)];
+	size_t rx_len;
+  
 	for(;;) {
-		UsbPoll(FALSE);
+    if (usb_poll()) {
+      rx_len = usb_read(rx,sizeof(UsbCommand));
+      if (rx_len) {
+        UsbPacketReceived(rx,rx_len);
+      }
+    }
 		WDT_HIT();
 
 #ifdef WITH_LF
+#ifndef WITH_ISO14443a_StandAlone
 		if (BUTTON_HELD(1000) > 0)
 			SamyRun();
+#endif
+#endif
+#ifdef WITH_ISO14443a
+#ifdef WITH_ISO14443a_StandAlone
+		if (BUTTON_HELD(1000) > 0)
+			StandAloneMode14a();
+#endif
 #endif
 	}
 }