]> git.zerfleddert.de Git - proxmark3-svn/blobdiff - armsrc/appmain.c
CHG: `hf em` commands. Client side now has same commands as Peter Fillmores 14atagfuz...
[proxmark3-svn] / armsrc / appmain.c
index 96644b9a09e039062130d5fae52c34952c3032d1..eea3857b078445805d62e05d4e3240e50403e9a3 100644 (file)
@@ -9,27 +9,26 @@
 // The main application code. This is the first thing called after start.c
 // executes.
 //-----------------------------------------------------------------------------
-
 #include "usb_cdc.h"
-#include "cmd.h"
-
 #include "proxmark3.h"
 #include "apps.h"
 #include "util.h"
 #include "printf.h"
 #include "string.h"
-
-#include <stdarg.h>
-
 #include "legicrf.h"
-#include <hitag2.h>
 #include "lfsampling.h"
 #include "BigBuf.h"
+#include "mifareutil.h"
+
 #ifdef WITH_LCD
  #include "LCD.h"
 #endif
 
-#define abs(x) ( ((x)<0) ? -(x) : (x) )
+// Craig Young - 14a stand-alone code
+#ifdef WITH_ISO14443a_StandAlone
+ #include "iso14443a.h"
+ #include "protocols.h"
+#endif
 
 //=============================================================================
 // A buffer where we can queue things up to be sent through the FPGA, for
@@ -39,7 +38,7 @@
 
 #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;
+int ToSendMax = 0;
 static int ToSendBit;
 struct common_area common_area __attribute__((section(".commonarea")));
 
@@ -49,19 +48,17 @@ void ToSendReset(void)
        ToSendBit = 8;
 }
 
-void ToSendStuffBit(int b)
-{
+void ToSendStuffBit(int b) {
        if(ToSendBit >= 8) {
-               ToSendMax++;
+               ++ToSendMax;
                ToSend[ToSendMax] = 0;
                ToSendBit = 0;
        }
 
-       if(b) {
+       if(b)
                ToSend[ToSendMax] |= (1 << (7 - ToSendBit));
-       }
 
-       ToSendBit++;
+       ++ToSendBit;
 
        if(ToSendMax >= sizeof(ToSend)) {
                ToSendBit = 0;
@@ -69,26 +66,66 @@ void ToSendStuffBit(int b)
        }
 }
 
+void PrintToSendBuffer(void){
+       DbpString("Printing ToSendBuffer:");
+       Dbhexdump(ToSendMax, ToSend, 0);
+}
+
+void print_result(char *name, uint8_t *buf, size_t len) {
+       uint8_t *p = buf;
+
+       if ( len % 16 == 0 ) {
+               for(; p-buf < len; p += 16)
+                       Dbprintf("[%s:%d/%d] %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x",
+                               name,
+                               p-buf,
+                               len,
+                               p[0], p[1], p[2], p[3], p[4], p[5], p[6], p[7],p[8], p[9], p[10], p[11], p[12], p[13], p[14], p[15]
+                       );
+       }
+       else {
+               for(; p-buf < len; p += 8)
+                       Dbprintf("[%s:%d/%d] %02x %02x %02x %02x %02x %02x %02x %02x",
+                               name,
+                               p-buf,
+                               len,
+                               p[0], p[1], p[2], p[3], p[4], p[5], p[6], p[7]);
+       }
+}
+
 //=============================================================================
 // Debug print functions, to go out over USB, to the usual PC-side client.
 //=============================================================================
 
-void DbpString(char *str)
-{
-  byte_t len = strlen(str);
-  cmd_send(CMD_DEBUG_PRINT_STRING,len,0,0,(byte_t*)str,len);
+void DbpStringEx(char *str, uint32_t cmd){
+       byte_t len = strlen(str);
+       cmd_send(CMD_DEBUG_PRINT_STRING,len, cmd,0,(byte_t*)str,len);
+}
+
+void DbpString(char *str) {
+       DbpStringEx(str, 0);
 }
 
 #if 0
-void DbpIntegers(int x1, int x2, int x3)
-{
-  cmd_send(CMD_DEBUG_PRINT_INTEGERS,x1,x2,x3,0,0);
+void DbpIntegers(int x1, int x2, int x3) {
+       cmd_send(CMD_DEBUG_PRINT_INTEGERS,x1,x2,x3,0,0);
 }
 #endif
+void DbprintfEx(uint32_t cmd, const char *fmt, ...) {
+       // should probably limit size here; oh well, let's just use a big buffer
+       char output_string[128] = {0x00};
+       va_list ap;
+
+       va_start(ap, fmt);
+       kvsprintf(fmt, output_string, 10, ap);
+       va_end(ap);
+
+       DbpStringEx(output_string, cmd);
+}
 
 void Dbprintf(const char *fmt, ...) {
-// should probably limit size here; oh well, let's just use a big buffer
-       char output_string[128];
+       // should probably limit size here; oh well, let's just use a big buffer
+       char output_string[128] = {0x00};
        va_list ap;
 
        va_start(ap, fmt);
@@ -100,28 +137,27 @@ void Dbprintf(const char *fmt, ...) {
 
 // prints HEX & ASCII
 void Dbhexdump(int len, uint8_t *d, bool bAsci) {
-       int l=0,i;
+       int l=0, i;
        char ascii[9];
     
        while (len>0) {
-               if (len>8) l=8;
-               else l=len;
+
+               l = (len>8) ? 8 : len;
                
                memcpy(ascii,d,l);
                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]='.';
         
-               if (bAsci) {
+               if (bAsci)
                        Dbprintf("%-8s %*D",ascii,l,d," ");
-               } else {
+               else
                        Dbprintf("%*D",l,d," ");
-               }
         
-               len-=8;
-               d+=8;           
+               len -= 8;
+               d += 8;         
        }
 }
 
@@ -155,31 +191,29 @@ static int ReadAdc(int ch)
 
        AT91C_BASE_ADC->ADC_CR = AT91C_ADC_START;
 
-       while(!(AT91C_BASE_ADC->ADC_SR & ADC_END_OF_CONVERSION(ch)))
-               ;
+       while (!(AT91C_BASE_ADC->ADC_SR & ADC_END_OF_CONVERSION(ch))) ;
+       
        d = AT91C_BASE_ADC->ADC_CDR[ch];
-
        return d;
 }
 
 int AvgAdc(int ch) // was static - merlok
 {
-       int i;
-       int a = 0;
-
-       for(i = 0; i < 32; i++) {
+       int i, a = 0;
+       for(i = 0; i < 32; ++i)
                a += ReadAdc(ch);
-       }
 
        return (a + 15) >> 5;
 }
 
-void MeasureAntennaTuning(void)
-{
+
+void MeasureAntennaTuning(void) {
+
        uint8_t LF_Results[256];
-       int i, adcval = 0, peak = 0, peakv = 0, peakf = 0; //ptr = 0 
+       int i, adcval = 0, peak = 0, peakv = 0, peakf = 0;
        int vLf125 = 0, vLf134 = 0, vHf = 0;    // in mV
 
+       memset(LF_Results, 0, sizeof(LF_Results));
        LED_B_ON();
 
 /*
@@ -193,114 +227,53 @@ void MeasureAntennaTuning(void)
   
        FpgaDownloadAndGo(FPGA_BITSTREAM_LF);
        FpgaWriteConfWord(FPGA_MAJOR_MODE_LF_ADC | FPGA_LF_ADC_READER_FIELD);
-       for (i=255; i>=19; i--) {
-    WDT_HIT();
+               
+       for  (i = 255; i >= 19; i--) {
+               WDT_HIT();
                FpgaSendCommand(FPGA_CMD_SET_DIVISOR, i);
                SpinDelay(20);
                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
 
-               LF_Results[i] = adcval>>8; // scale int to fit in byte for graphing purposes
+               LF_Results[i] = adcval >> 8; // scale int to fit in byte for graphing purposes
                if(LF_Results[i] > peak) {
                        peakv = adcval;
                        peak = LF_Results[i];
                        peakf = 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);
+       FpgaDownloadAndGo(FPGA_BITSTREAM_HF);
        FpgaWriteConfWord(FPGA_MAJOR_MODE_HF_READER_RX_XCORR);
        SpinDelay(20);
        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);
+       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;
+       LEDsoff();
 }
 
-void MeasureAntennaTuningHf(void)
-{
+void MeasureAntennaTuningHf(void) {
        int vHf = 0;    // in mV
-
-       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 (;;) {
+       while ( !BUTTON_PRESS() ){
                SpinDelay(20);
                vHf = (MAX_ADC_HF_VOLTAGE * AvgAdc(ADC_CHAN_HF)) >> 10;
-
-               Dbprintf("%d mV",vHf);
-               if (BUTTON_PRESS()) break;
+               //Dbprintf("%d mV",vHf);
+               DbprintfEx(CMD_MEASURE_ANTENNA_TUNING_HF, "%d mV",vHf);
        }
-       DbpString("cancelled");
-
        FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
-
+       DbpString("cancelled");
 }
 
 
-void SimulateTagHfListen(void)
-{
-       // ToDo: historically this used the free buffer, which was 2744 Bytes long. 
-       // There might be a better size to be defined:
-       #define HF_14B_SNOOP_BUFFER_SIZE 2744
-       uint8_t *dest = BigBuf_malloc(HF_14B_SNOOP_BUFFER_SIZE);
-       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.
-       FpgaDownloadAndGo(FPGA_BITSTREAM_HF);
-       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;
-
-                       v <<= 1;
-                       if(r & 1) {
-                               v |= 1;
-                       }
-                       p++;
-
-                       if(p >= 8) {
-                               dest[i] = v;
-                               v = 0;
-                               p = 0;
-                               i++;
-
-                               if(i >= HF_14B_SNOOP_BUFFER_SIZE) {
-                                       break;
-                               }
-                       }
-               }
-       }
-       DbpString("simulate tag (now type bitsamples)");
-}
-
-void ReadMem(int addr)
-{
+void ReadMem(int addr) {
        const uint8_t *data = ((uint8_t *)addr);
 
        Dbprintf("%x: %02x %02x %02x %02x %02x %02x %02x %02x",
@@ -310,45 +283,92 @@ 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[512]; /* 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
         * pointer, then use it.
         */
        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(temp, sizeof(temp));
-       DbpString(temp);
-       // Send Chip ID
-       cmd_send(CMD_ACK,*(AT91C_DBGU_CIDR),0,0,NULL,0);
+       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);
+
+       // 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.");
-       FpgaDownloadAndGo(FPGA_BITSTREAM_LF);
+       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);
+       Dbprintf("  ToSend BUFFERSIZE..%d", TOSEND_BUFFER_SIZE);
+
+       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);
@@ -359,7 +379,277 @@ void SamyRun()
        LED(LED_GREEN,  200);
        LED(LED_ORANGE, 200);
        LED(LED_RED,    200);
+}
+#endif
+
+#ifdef WITH_ISO14443a_StandAlone
+
+typedef struct {
+       uint8_t uid[10];
+       uint8_t uidlen;
+       uint8_t atqa[2];
+       uint8_t sak;
+} __attribute__((__packed__)) card_clone_t;
+
+void StandAloneMode14a()
+{
+       StandAloneMode();
+       FpgaDownloadAndGo(FPGA_BITSTREAM_HF);
+
+       int selected = 0, playing = 0, iGotoRecord = 0, iGotoClone = 0;
+       int cardRead[OPTS] = {0};
+
+       card_clone_t uids[OPTS];
+       iso14a_card_select_t card_info[OPTS];
+       uint8_t params = (MAGIC_SINGLE | MAGIC_DATAIN);
+                                       
+       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);
+                       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(NULL, &card_info[selected], NULL, true, 0))
+                                       continue;
+                               else
+                               {
+                                       Dbprintf("Read UID:"); 
+                                       Dbhexdump(card_info[selected].uidlen, card_info[selected].uid, 0);
+                                       
+                                       if (memcmp(uids[(selected+1)%OPTS].uid, card_info[selected].uid, card_info[selected].uidlen ) == 0 ) {
+                                               Dbprintf("Card selected has same UID as what is stored in the other bank. Skipping.");
+                                       }
+                                       else {
+                                               
+                                               uids[selected].sak = card_info[selected].sak;
+                                               uids[selected].uidlen = card_info[selected].uidlen;                                             
+                                               memcpy(uids[selected].uid , card_info[selected].uid, uids[selected].uidlen);                                            
+                                               memcpy(uids[selected].atqa, card_info[selected].atqa, 2);
+                                                                                               
+                                               if (uids[selected].uidlen > 4)
+                                                       Dbprintf("Bank[%d] received a 7-byte UID", selected);
+                                               else
+                                                       Dbprintf("Bank[%d] received a 4-byte UID", selected);
+                                       break;
+                               }
+                       }
+                       }
+                       Dbprintf("ATQA = %02X%02X", uids[selected].atqa[0], uids[selected].atqa[1]);
+                       Dbprintf("SAK = %02X", uids[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);
+
+                       // magiccards holds 4bytes uid.
+                       uint64_t tmpuid = bytes_to_num(uids[selected].uid, 4);
+                       
+                       // record
+                       Dbprintf("Preparing to Clone card [Bank: %x]; uid: %08x", selected, tmpuid & 0xFFFFFFFF);
+
+                       // wait for button to be released
+                       // Delay cloning until card is in place
+                       while(BUTTON_PRESS())
+                               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, {params & (0xFE | (uid == NULL ? 0:1)), blockNo, 0}};
+                                       memcpy(c.d.asBytes, data, 16);
+                                       SendCommand(&c);
+
+                               Block read is similar:
+                                       UsbCommand c = {CMD_MIFARE_CGETBLOCK, {params, blockNo, 0}};
+                               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->d.asBytes);
+                                                       break;
+                                       case CMD_MIFARE_CGETBLOCK:
+                                                       MifareCGetBlock(c->arg[0], c->arg[1], 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, MAGIC_SINGLE) to write it
+                       */
+                       uint8_t oldBlock0[16] = {0}, newBlock0[16] = {0}, testBlock0[16] = {0};
+                       // arg0 = Flags, arg1=blockNo
+                       MifareCGetBlock(params, 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 for bank (2nd is for longer UIDs not supported if classic)
+                               memcpy(newBlock0, uids[selected].uid, 4);
+                               newBlock0[4] = newBlock0[0] ^ newBlock0[1] ^ newBlock0[2] ^ newBlock0[3];
+
+                               // arg0 = workFlags, arg1 = blockNo, datain
+                               MifareCSetBlock(params, 0, newBlock0);
+                               MifareCGetBlock(params, 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 flags = FLAG_4B_UID_IN_DATA;
+                                               uint8_t data[USB_CMD_DATA_SIZE] = {0}; // in case there is a read command received we shouldn't break
+
+                                               memcpy(data, uids[selected].uid, uids[selected].uidlen);
+                                               
+                                               uint64_t tmpuid = bytes_to_num(uids[selected].uid, uids[selected].uidlen);
+                                                                       
+                                               if (  uids[selected].uidlen == 7 ) {
+                                                       flags = FLAG_7B_UID_IN_DATA;
+                                                       Dbprintf("Simulating ISO14443a tag with uid: %02x%08x [Bank: %u]", tmpuid >> 32, tmpuid & 0xFFFFFFFF , selected);
+                                               } else {
+                                                       Dbprintf("Simulating ISO14443a tag with uid: %08x [Bank: %u]", tmpuid & 0xFFFFFFFF , selected);
+                                               }
+                                               
+                                               if (uids[selected].sak == 0x08 && uids[selected].atqa[0] == 0x04 && uids[selected].atqa[1] == 0) {
+                                                       DbpString("Mifare Classic 1k");
+                                                       SimulateIso14443aTag(1, flags, data);
+                                               } else if (uids[selected].sak == 0x18 && uids[selected].atqa[0] == 0x02 && uids[selected].atqa[1] == 0) {
+                                                       DbpString("Mifare Classic 4k (4b uid)");
+                                                       SimulateIso14443aTag(8, flags, data);
+                                               } else if (uids[selected].sak == 0x08 && uids[selected].atqa[0] == 0x44 && uids[selected].atqa[1] == 0) {
+                                                       DbpString("Mifare Classic 4k (7b uid)");
+                                                       SimulateIso14443aTag(8, flags, data);
+                                               } else if (uids[selected].sak == 0x00 && uids[selected].atqa[0] == 0x44 && uids[selected].atqa[1] == 0) {
+                                                       DbpString("Mifare Ultralight");
+                                                       SimulateIso14443aTag(2, flags, data);
+                                               } else if (uids[selected].sak == 0x20 && uids[selected].atqa[0] == 0x04 && uids[selected].atqa[1] == 0x03) {
+                                                       DbpString("Mifare DESFire");
+                                                       SimulateIso14443aTag(3, flags, data);
+                                               }
+                                               else {
+                                                       Dbprintf("Unrecognized tag type -- defaulting to Mifare Classic emulation");
+                                                       SimulateIso14443aTag(1, flags, 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;
@@ -367,10 +657,9 @@ void SamyRun()
        // Turn on selected LED
        LED(selected + 1, 0);
 
-       for (;;)
-       {
+       for (;;) {
                usb_poll();
-    WDT_HIT();
+               WDT_HIT();
 
                // Was our button held down or pressed?
                int button_pressed = BUTTON_HELD(1000);
@@ -394,54 +683,46 @@ 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);
                        // Finished recording
-
                        // If we were previously playing, set playing off
                        // so next button push begins playing what we recorded
-                       playing = 0;
-                       
-                       cardRead = 1;
-       
+                       playing = 0;                    
+                       cardRead = 1;   
                }
+               else if (button_pressed > 0 && cardRead == 1) {
+                       LEDsoff();
+                       LED(selected + 1, 0);
+                       LED(LED_ORANGE, 0);
 
-               else if (button_pressed > 0 && cardRead == 1)
-               {
-                                       LEDsoff();
-                                       LED(selected + 1, 0);
-                                       LED(LED_ORANGE, 0);
-
-                                       // record
-                                       Dbprintf("Cloning %x %x %x", selected, high[selected], low[selected]);
+                       // record
+                       Dbprintf("Cloning %x %x %08x", selected, high[selected], low[selected]);
 
-                                       // wait for button to be released
-                                       while(BUTTON_PRESS())
-                                               WDT_HIT();
+                       // wait for button to be released
+                       while(BUTTON_PRESS())
+                               WDT_HIT();
 
-                                       /* need this delay to prevent catching some weird data */
-                                       SpinDelay(500);
+                       /* need this delay to prevent catching some weird data */
+                       SpinDelay(500);
 
-                                       CopyHIDtoT55x7(high[selected], low[selected], 0, 0);
-                                       Dbprintf("Cloned %x %x %x", selected, high[selected], low[selected]);
+                       CopyHIDtoT55x7(0, high[selected], low[selected], 0);
+                       Dbprintf("Cloned %x %x %08x", selected, high[selected], low[selected]);
 
-                                       LEDsoff();
-                                       LED(selected + 1, 0);
-                                       // Finished recording
+                       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;
-                       
+                       // 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)
-               else if (button_pressed)
-               {
+               else if (button_pressed) {
                        // Next option if we were previously playing
                        if (playing)
                                selected = (selected + 1) % OPTS;
@@ -458,15 +739,16 @@ void SamyRun()
                                // wait for button to be released
                                while(BUTTON_PRESS())
                                        WDT_HIT();
-                               Dbprintf("%x %x %x", selected, high[selected], low[selected]);
-                               CmdHIDsimTAG(high[selected], low[selected], 0);
+                               
+                               Dbprintf("%x %x %08x", selected, high[selected], low[selected]);
+                               CmdHIDsimTAG(high[selected], low[selected], 0);         
                                DbpString("Done playing");
-                               if (BUTTON_HELD(1000) > 0)
-                                       {
+                               
+                               if (BUTTON_HELD(1000) > 0) {
                                        DbpString("Exiting");
                                        LEDsoff();
                                        return;
-                                       }
+                               }
 
                                /* We pressed a button so ignore it here with a delay */
                                SpinDelay(300);
@@ -483,8 +765,8 @@ void SamyRun()
                }
        }
 }
-#endif
 
+#endif
 /*
 OBJECTIVE
 Listen and detect an external reader. Determine the best location
@@ -522,16 +804,14 @@ static const char LIGHT_SCHEME[] = {
 };
 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_max;
-       int hf_av, hf_av_new,  hf_baseline= 0, hf_max;
-       int mode=1, display_val, display_max, i;
-
+void ListenReaderField(int limit) {
 #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
 
+       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;
 
        // switch off FPGA - we don't want to measure our own signal
        FpgaDownloadAndGo(FPGA_BITSTREAM_HF);
@@ -573,7 +853,7 @@ void ListenReaderField(int limit)
 
                if (limit != HF_ONLY) {
                        if(mode == 1) {
-                               if (abs(lf_av - lf_baseline) > REPORT_CHANGE) 
+                               if (ABS(lf_av - lf_baseline) > REPORT_CHANGE) 
                                        LED_D_ON();
                                else
                                        LED_D_OFF();
@@ -581,7 +861,7 @@ void ListenReaderField(int limit)
 
                        lf_av_new = AvgAdc(ADC_CHAN_LF);
                        // see if there's a significant change
-                       if(abs(lf_av - lf_av_new) > REPORT_CHANGE) {
+                       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)
@@ -591,7 +871,7 @@ void ListenReaderField(int limit)
 
                if (limit != LF_ONLY) {
                        if (mode == 1){
-                               if (abs(hf_av - hf_baseline) > REPORT_CHANGE)   
+                               if (ABS(hf_av - hf_baseline) > REPORT_CHANGE)   
                                        LED_B_ON();
                                else
                                        LED_B_OFF();
@@ -599,7 +879,7 @@ void ListenReaderField(int limit)
 
                        hf_av_new = AvgAdc(ADC_CHAN_HF);
                        // see if there's a significant change
-                       if(abs(hf_av - hf_av_new) > REPORT_CHANGE) {
+                       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)
@@ -640,7 +920,7 @@ void UsbPacketReceived(uint8_t *packet, int len)
 {
        UsbCommand *c = (UsbCommand *)packet;
 
-//  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]);
+       //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
@@ -648,10 +928,10 @@ void UsbPacketReceived(uint8_t *packet, int len)
                        setSamplingConfig((sample_config *) c->d.asBytes);
                        break;
                case CMD_ACQUIRE_RAW_ADC_SAMPLES_125K:
-                       cmd_send(CMD_ACK,SampleLF(c->arg[0]),0,0,0,0);
+                       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);
+                       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);
@@ -678,7 +958,7 @@ void UsbPacketReceived(uint8_t *packet, int len)
                        CmdIOdemodFSK(c->arg[0], 0, 0, 1);
                        break;
                case CMD_IO_CLONE_TAG:
-                       CopyIOtoT55x7(c->arg[0], c->arg[1], c->d.asBytes[0]);
+                       CopyIOtoT55x7(c->arg[0], c->arg[1]);
                        break;
                case CMD_EM410X_DEMOD:
                        CmdEM410xdemod(c->arg[0], 0, 0, 1);
@@ -693,7 +973,7 @@ void UsbPacketReceived(uint8_t *packet, int len)
                        WriteTItag(c->arg[0],c->arg[1],c->arg[2]);
                        break;
                case CMD_SIMULATE_TAG_125K:
-                       LED_A_ON();
+                       LED_A_ON();             
                        SimulateTagLowFrequency(c->arg[0], c->arg[1], 1);
                        LED_A_OFF();
                        break;
@@ -707,23 +987,37 @@ void UsbPacketReceived(uint8_t *packet, int len)
                        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[1], c->arg[2],c->d.asBytes[0]);
+                       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_READ_TRACE:
-                       T55xxReadTrace();
+               case CMD_T55XX_WAKEUP:
+                       T55xxWakeUp(c->arg[0]);
+                       break;
+               case CMD_T55XX_RESET_READ:
+                       T55xxResetRead();
                        break;
                case CMD_PCF7931_READ:
                        ReadPCF7931();
-                       cmd_send(CMD_ACK,0,0,0,0,0);
+                       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]);
+                       EM4xReadWord(c->arg[0], c->arg[1], c->arg[2]);
                        break;
                case CMD_EM4X_WRITE_WORD:
-                       EM4xWriteWord(c->arg[0], c->arg[1], c->arg[2], c->d.asBytes[0]);
+                       EM4xWriteWord(c->arg[0], c->arg[1], c->arg[2]);
+                       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;
+               case CMD_COTAG:
+                       Cotag(c->arg[0]);
                        break;
 #endif
 
@@ -737,6 +1031,18 @@ void UsbPacketReceived(uint8_t *packet, int len)
                case CMD_READER_HITAG: // Reader for Hitag tags, args = type and function
                        ReaderHitag((hitag_function)c->arg[0],(hitag_data*)c->d.asBytes);
                        break;
+               case CMD_SIMULATE_HITAG_S:// Simulate Hitag s tag, args = memory content
+                       SimulateHitagSTag((bool)c->arg[0],(byte_t*)c->d.asBytes);
+                       break;
+               case CMD_TEST_HITAGS_TRACES:// Tests every challenge within the given file
+                       check_challenges((bool)c->arg[0],(byte_t*)c->d.asBytes);
+                       break;
+               case CMD_READ_HITAG_S: //Reader for only Hitag S tags, args = key or challenge
+                       ReadHitagS((hitag_function)c->arg[0],(hitag_data*)c->d.asBytes);
+                       break;
+               case CMD_WR_HITAG_S: //writer for Hitag tags args=data to write,page and key or challenge
+                       WritePageHitagS((hitag_function)c->arg[0],(hitag_data*)c->d.asBytes,c->arg[2]);
+                       break;
 #endif
 
 #ifdef WITH_ISO15693
@@ -746,19 +1052,15 @@ void UsbPacketReceived(uint8_t *packet, int len)
                case CMD_RECORD_RAW_ADC_SAMPLES_ISO_15693:
                        RecordRawAdcSamplesIso15693();
                        break;
-                       
                case CMD_ISO_15693_COMMAND:
                        DirectTag15693Command(c->arg[0],c->arg[1],c->arg[2],c->d.asBytes);
                        break;
-                                       
                case CMD_ISO_15693_FIND_AFI:
                        BruteforceIso15693Afi(c->arg[0]);
                        break;  
-                       
                case CMD_ISO_15693_DEBUG:
                        SetDebugIso15693(c->arg[0]);
                        break;
-
                case CMD_READER_ISO_15693:
                        ReaderIso15693(c->arg[0]);
                        break;
@@ -771,54 +1073,54 @@ void UsbPacketReceived(uint8_t *packet, int len)
                case CMD_SIMULATE_TAG_LEGIC_RF:
                        LegicRfSimulate(c->arg[0], c->arg[1], c->arg[2]);
                        break;
-
                case CMD_WRITER_LEGIC_RF:
-                       LegicRfWriter(c->arg[1], c->arg[0]);
+                       LegicRfWriter( c->arg[0], c->arg[1], c->arg[2], c->d.asBytes);
                        break;
-
                case CMD_READER_LEGIC_RF:
-                       LegicRfReader(c->arg[0], c->arg[1]);
+                       LegicRfReader(c->arg[0], c->arg[1], c->arg[2]);
+                       break;                  
+               case CMD_LEGIC_INFO:
+                       LegicRfInfo();
+                       break;
+               case CMD_LEGIC_ESET:
+                       LegicEMemSet(c->arg[0], c->arg[1], c->d.asBytes);
                        break;
 #endif
 
 #ifdef WITH_ISO14443b
-               case CMD_ACQUIRE_RAW_ADC_SAMPLES_ISO_14443:
-                       AcquireRawAdcSamplesIso14443(c->arg[0]);
-                       break;
-               case CMD_READ_SRI512_TAG:
-                       ReadSTMemoryIso14443(0x0F);
+               case CMD_READ_SRI_TAG:
+                       ReadSTMemoryIso14443b(c->arg[0]);
                        break;
-               case CMD_READ_SRIX4K_TAG:
-                       ReadSTMemoryIso14443(0x7F);
+               case CMD_SNOOP_ISO_14443B:
+                       SnoopIso14443b();
                        break;
-               case CMD_SNOOP_ISO_14443:
-                       SnoopIso14443();
-                       break;
-               case CMD_SIMULATE_TAG_ISO_14443:
-                       SimulateIso14443Tag();
+               case CMD_SIMULATE_TAG_ISO_14443B:
+                       SimulateIso14443bTag(c->arg[0]);
                        break;
                case CMD_ISO_14443B_COMMAND:
-                       SendRawCommand14443B(c->arg[0],c->arg[1],c->arg[2],c->d.asBytes);
+                       //SendRawCommand14443B(c->arg[0],c->arg[1],c->arg[2],c->d.asBytes);
+                       SendRawCommand14443B_Ex(c);
                        break;
 #endif
 
 #ifdef WITH_ISO14443a
                case CMD_SNOOP_ISO_14443a:
-                       SnoopIso14443a(c->arg[0]);
+                       SniffIso14443a(c->arg[0]);
                        break;
                case CMD_READER_ISO_14443a:
                        ReaderIso14443a(c);
                        break;
                case CMD_SIMULATE_TAG_ISO_14443a:
-                       SimulateIso14443aTag(c->arg[0], c->arg[1], c->arg[2], c->d.asBytes);  // ## Simulate iso14443a tag - pass tag type & UID
+                       SimulateIso14443aTag(c->arg[0], c->arg[1], 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:
-                       ReaderMifare(c->arg[0]);
+            ReaderMifare(c->arg[0], c->arg[1], c->arg[2]);
                        break;
                case CMD_MIFARE_READBL:
                        MifareReadBlock(c->arg[0], c->arg[1], c->arg[2], c->d.asBytes);
@@ -841,11 +1143,14 @@ void UsbPacketReceived(uint8_t *packet, int len)
                case CMD_MIFARE_WRITEBL:
                        MifareWriteBlock(c->arg[0], c->arg[1], c->arg[2], c->d.asBytes);
                        break;
-               case CMD_MIFAREU_WRITEBL_COMPAT:
-                       MifareUWriteBlock(c->arg[0], c->d.asBytes);
-                       break;
+               //case CMD_MIFAREU_WRITEBL_COMPAT:
+                       //MifareUWriteBlockCompat(c->arg[0], c->d.asBytes);
+                       //break;
                case CMD_MIFAREU_WRITEBL:
-                       MifareUWriteBlock_Special(c->arg[0], c->d.asBytes);
+                       MifareUWriteBlock(c->arg[0], c->arg[1], c->d.asBytes);
+                       break;
+               case CMD_MIFARE_ACQUIRE_ENCRYPTED_NONCES:
+                       MifareAcquireEncryptedNonces(c->arg[0], c->arg[1], c->arg[2], c->d.asBytes);
                        break;
                case CMD_MIFARE_NESTED:
                        MifareNested(c->arg[0], c->arg[1], c->arg[2], c->d.asBytes);
@@ -876,10 +1181,10 @@ void UsbPacketReceived(uint8_t *packet, int len)
                        
                // Work with "magic Chinese" card
                case CMD_MIFARE_CSETBLOCK:
-                       MifareCSetBlock(c->arg[0], c->arg[1], c->arg[2], c->d.asBytes);
+                       MifareCSetBlock(c->arg[0], c->arg[1], c->d.asBytes);
                        break;
                case CMD_MIFARE_CGETBLOCK:
-                       MifareCGetBlock(c->arg[0], c->arg[1], c->arg[2], c->d.asBytes);
+                       MifareCGetBlock(c->arg[0], c->arg[1], c->d.asBytes);
                        break;
                case CMD_MIFARE_CIDENT:
                        MifareCIdent();
@@ -890,8 +1195,61 @@ void UsbPacketReceived(uint8_t *packet, int len)
                        SniffMifare(c->arg[0]);
                        break;
 
+               //mifare desfire
+               case CMD_MIFARE_DESFIRE_READBL: break;
+               case CMD_MIFARE_DESFIRE_WRITEBL: break;
+               case CMD_MIFARE_DESFIRE_AUTH1:
+                       MifareDES_Auth1(c->arg[0], c->arg[1], c->arg[2], c->d.asBytes);
+                       break;
+               case CMD_MIFARE_DESFIRE_AUTH2:
+                       //MifareDES_Auth2(c->arg[0],c->d.asBytes);
+                       break;
+               case CMD_MIFARE_DES_READER:
+                       //readermifaredes(c->arg[0], c->arg[1], c->d.asBytes);
+                       break;
+               case CMD_MIFARE_DESFIRE_INFO:
+                       MifareDesfireGetInformation();
+                       break;
+               case CMD_MIFARE_DESFIRE:
+                       MifareSendCommand(c->arg[0], c->arg[1], c->d.asBytes);
+                       break;
+               case CMD_MIFARE_COLLECT_NONCES:
+                       break;
+#endif
+#ifdef WITH_EMV
+               case CMD_EMV_TRANSACTION:
+                       EMVTransaction();
+                       break;
+        case CMD_EMV_GET_RANDOM_NUM:
+            //EMVgetUDOL();
+            break;
+        case CMD_EMV_LOAD_VALUE:
+            EMVloadvalue(c->arg[0], c->d.asBytes);  
+            break;
+        case CMD_EMV_DUMP_CARD:
+            EMVdumpcard();
+                       break;
+/*                     
+       case CMD_EMV_READ_RECORD:
+            EMVReadRecord(c->arg[0], c->arg[1], NULL);
+            break; 
+        case CMD_EMV_TRANSACTION:
+            EMVTransaction(); 
+            break;
+        case CMD_EMV_CLONE:
+            EMVClone(c->arg[0], c->arg[1]);
+            break;
+       case CMD_EMV_SIM:
+            EMVSim();
+            break;
+        case CMD_EMV_TEST:
+            EMVTest();
+            break;
+        case CMD_EMV_FUZZ_RATS:
+            EMVFuzz_RATS(c->arg[0],c->d.asBytes);
+            break;
+                       */
 #endif
-
 #ifdef WITH_ICLASS
                // Makes use of ISO14443a FPGA Firmware
                case CMD_SNOOP_ICLASS:
@@ -906,14 +1264,33 @@ void UsbPacketReceived(uint8_t *packet, int len)
                case CMD_READER_ICLASS_REPLAY:
                    ReaderIClass_Replay(c->arg[0], c->d.asBytes);
                        break;
-       case CMD_ICLASS_EML_MEMSET:
+               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:
                        BigBuf_Clear();
@@ -937,25 +1314,55 @@ 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:
-
+               case CMD_DOWNLOAD_RAW_ADC_SAMPLES_125K: {
                        LED_B_ON();
                        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);
+                       size_t len = 0;
+                       size_t startidx = c->arg[0];
+                       uint8_t isok = FALSE;
+                       // arg0 = startindex
+                       // arg1 = length bytes to transfer
+                       // arg2 = RFU
+                       //Dbprintf("transfer to client parameters: %" PRIu64 " | %" PRIu64 " | %" PRIu64, c->arg[0], c->arg[1], c->arg[2]);
+                       
+                       for(size_t i = 0; i < c->arg[1]; i += USB_CMD_DATA_SIZE) {
+                               len = MIN( (c->arg[1] - i), USB_CMD_DATA_SIZE);
+                               isok = cmd_send(CMD_DOWNLOADED_RAW_ADC_SAMPLES_125K, i, len, BigBuf_get_traceLen(), BigBuf + startidx + i, len);
+                               if (!isok) 
+                                       Dbprintf("transfer to client failed ::  | bytes %d", len);
                        }
                        // Trigger a finish downloading signal with an ACK frame
-                       cmd_send(CMD_ACK,1,0,BigBuf_get_traceLen(),getSamplingConfig(),sizeof(sample_config));
+                       cmd_send(CMD_ACK, 1, 0, BigBuf_get_traceLen(), getSamplingConfig(), sizeof(sample_config));
                        LED_B_OFF();
                        break;
-
+               }
                case CMD_DOWNLOADED_SIM_SAMPLES_125K: {
+                       // iceman; since changing fpga_bitstreams clears bigbuff, Its better to call it before.
+                       // to be able to use this one for uploading data to device 
+                       // arg1 = 0 upload for LF usage 
+                       //        1 upload for HF usage
+                       if ( c->arg[1] == 0 )
+                               FpgaDownloadAndGo(FPGA_BITSTREAM_LF);
+                       else 
+                               FpgaDownloadAndGo(FPGA_BITSTREAM_HF);
                        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);
+                       memcpy( b + c->arg[0], c->d.asBytes, USB_CMD_DATA_SIZE);
+                       cmd_send(CMD_ACK,1,0,0,0,0);
+                       break;
+               }
+               case CMD_DOWNLOAD_EML_BIGBUF: {
+                       LED_B_ON();
+                       uint8_t *cardmem = BigBuf_get_EM_addr();
+                       size_t len = 0;
+                       for(size_t i=0; i < c->arg[1]; i += USB_CMD_DATA_SIZE) {
+                               len = MIN((c->arg[1] - i), USB_CMD_DATA_SIZE);
+                               cmd_send(CMD_DOWNLOADED_EML_BIGBUF, i, len, CARD_MEMORY_SIZE, cardmem + c->arg[0] + i, len);
+                       }
+                       // Trigger a finish downloading signal with an ACK frame
+                       cmd_send(CMD_ACK, 1, 0, CARD_MEMORY_SIZE, 0, 0);
+                       LED_B_OFF();
                        break;
-               }       
+               }
                case CMD_READ_MEM:
                        ReadMem(c->arg[0]);
                        break;
@@ -977,7 +1384,12 @@ void UsbPacketReceived(uint8_t *packet, int len)
                case CMD_VERSION:
                        SendVersion();
                        break;
-
+               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();
@@ -990,8 +1402,7 @@ void UsbPacketReceived(uint8_t *packet, int len)
                case CMD_FINISH_WRITE:
                case CMD_HARDWARE_RESET:
                        usb_disable();
-                       SpinDelay(1000);
-                       SpinDelay(1000);
+                       SpinDelay(2000);
                        AT91C_BASE_RSTC->RSTC_RCR = RST_CONTROL_KEY | AT91C_RSTC_PROCRST;
                        for(;;) {
                                // We're going to reset, and the bootrom will take control.
@@ -1031,21 +1442,17 @@ void  __attribute__((noreturn)) AppMain(void)
        }
        common_area.flags.osimage_present = 1;
 
-       LED_D_OFF();
-       LED_C_OFF();
-       LED_B_OFF();
-       LED_A_OFF();
+       LEDsoff();
 
        // Init USB device
-  usb_enable();
+       usb_enable();
 
        // The FPGA gets its clock from us from PCK0 output, so set that up.
        AT91C_BASE_PIOA->PIO_BSR = GPIO_PCK0;
        AT91C_BASE_PIOA->PIO_PDR = GPIO_PCK0;
        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_BASE_PMC->PMC_PCKR[0] = AT91C_PMC_CSS_PLL_CLK | AT91C_PMC_PRES_CLK_4; //  4 for 24Mhz pck0, 2 for 48 MHZ pck0
        AT91C_BASE_PIOA->PIO_OER = GPIO_PCK0;
 
        // Reset SPI
@@ -1063,21 +1470,29 @@ void  __attribute__((noreturn)) AppMain(void)
        LCDInit();
 #endif
 
-  byte_t rx[sizeof(UsbCommand)];
+       byte_t rx[sizeof(UsbCommand)];
        size_t rx_len;
   
        for(;;) {
-    if (usb_poll()) {
-      rx_len = usb_read(rx,sizeof(UsbCommand));
-      if (rx_len) {
-        UsbPacketReceived(rx,rx_len);
-      }
-    }
+               if ( usb_poll_validate_length() ) {
+                       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
        }
 }
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