]> git.zerfleddert.de Git - proxmark3-svn/blobdiff - armsrc/appmain.c
Merge pull request #909 from pwpiwi/fix_button_break
[proxmark3-svn] / armsrc / appmain.c
index 7c50a51ec89bc183c145aacdc4ace0227ad9b31d..70cabd2e20bfc00d8106a8c6443984db7135fb9a 100644 (file)
 // executes.
 //-----------------------------------------------------------------------------
 
+#include <stdarg.h>
+
 #include "usb_cdc.h"
 #include "cmd.h"
-
 #include "proxmark3.h"
 #include "apps.h"
+#include "fpga.h"
 #include "util.h"
 #include "printf.h"
 #include "string.h"
-
-#include <stdarg.h>
-
 #include "legicrf.h"
-#include <hitag2.h>
+#include "legicrfsim.h"
+#include "hitag2.h"
+#include "hitagS.h"
+#include "iclass.h"
+#include "iso14443b.h"
+#include "iso15693.h"
 #include "lfsampling.h"
+#include "BigBuf.h"
+#include "mifarecmd.h"
+#include "mifareutil.h"
+#include "mifaresim.h"
+#include "pcf7931.h"
+#include "i2c.h"
+#include "hfsnoop.h"
+#include "fpgaloader.h"
 #ifdef WITH_LCD
- #include "LCD.h"
      #include "LCD.h"
 #endif
 
-#define abs(x) ( ((x)<0) ? -(x) : (x) )
+static uint32_t hw_capabilities;
+
+// Craig Young - 14a stand-alone code
+#ifdef WITH_ISO14443a
+       #include "iso14443a.h"
+#endif
 
 //=============================================================================
 // A buffer where we can queue things up to be sent through the FPGA, for
 // is the order in which they go out on the wire.
 //=============================================================================
 
-#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 
+#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 ToSendReset(void)
-{
+void ToSendReset(void) {
        ToSendMax = -1;
        ToSendBit = 8;
 }
 
-void ToSendStuffBit(int b)
-{
-       if(ToSendBit >= 8) {
+void ToSendStuffBit(int b) {
+       if (ToSendBit >= 8) {
                ToSendMax++;
                ToSend[ToSendMax] = 0;
                ToSendBit = 0;
        }
 
-       if(b) {
+       if (b) {
                ToSend[ToSendMax] |= (1 << (7 - ToSendBit));
        }
 
        ToSendBit++;
 
-       if(ToSendMax >= sizeof(ToSend)) {
+       if (ToSendMax >= sizeof(ToSend)) {
                ToSendBit = 0;
                DbpString("ToSendStuffBit overflowed!");
        }
@@ -72,19 +87,11 @@ void ToSendStuffBit(int b)
 // 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 DbpString(char *str) {
+       uint8_t len = strlen(str);
+       cmd_send(CMD_DEBUG_PRINT_STRING,len,0,0,(uint8_t*)str,len);
 }
 
-#if 0
-void DbpIntegers(int x1, int x2, int x3)
-{
-  cmd_send(CMD_DEBUG_PRINT_INTEGERS,x1,x2,x3,0,0);
-}
-#endif
-
 void Dbprintf(const char *fmt, ...) {
 // should probably limit size here; oh well, let's just use a big buffer
        char output_string[128];
@@ -101,26 +108,26 @@ void Dbprintf(const char *fmt, ...) {
 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;
-               
+
                // filter safe ascii
-               for (i=0;i<l;i++)
-                       if (ascii[i]<32 || ascii[i]>126) ascii[i]='.';
-        
+               for (i = 0; i < l; i++)
+                       if (ascii[i]<32 || ascii[i]>126) ascii[i] = '.';
+
                if (bAsci) {
-                       Dbprintf("%-8s %*D",ascii,l,d," ");
+                       Dbprintf("%-8s %*D",ascii, l, d, " ");
                } else {
-                       Dbprintf("%*D",l,d," ");
+                       Dbprintf("%*D", l, d, " ");
                }
-        
-               len-=8;
-               d+=8;           
+
+               len -= 8;
+               d += 8;
        }
 }
 
@@ -129,27 +136,31 @@ void Dbhexdump(int len, uint8_t *d, bool bAsci) {
 // in ADC units (0 to 1023). Also a routine to average 32 samples and
 // return that.
 //-----------------------------------------------------------------------------
-static int ReadAdc(int ch)
-{
-       uint32_t d;
+static int ReadAdc(int ch) {
+       // Note: ADC_MODE_PRESCALE and ADC_MODE_SAMPLE_HOLD_TIME are set to the maximum allowed value.
+       // AMPL_HI is a high impedance (10MOhm || 1MOhm) output, the input capacitance of the ADC is 12pF (typical). This results in a time constant
+       // of RC = (0.91MOhm) * 12pF = 10.9us. 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(-SHTIM/RC))  =   v_in * (1 - exp(-40us/10.9us))  =  v_in * 0,97                   (i.e. an error of 3%)
 
        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);
-       AT91C_BASE_ADC->ADC_CHER = ADC_CHANNEL(ch);
+               ADC_MODE_PRESCALE(63) |                         // ADC_CLK = MCK / ((63+1) * 2) = 48MHz / 128 = 375kHz
+               ADC_MODE_STARTUP_TIME(1) |                      // Startup Time = (1+1) * 8 / ADC_CLK = 16 / 375kHz = 42,7us     Note: must be > 20us
+               ADC_MODE_SAMPLE_HOLD_TIME(15);                  // Sample & Hold Time SHTIM = 15 / ADC_CLK = 15 / 375kHz = 40us
 
+       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];
 
-       return d;
+       while(!(AT91C_BASE_ADC->ADC_SR & ADC_END_OF_CONVERSION(ch))) {};
+
+       return AT91C_BASE_ADC->ADC_CDR[ch] & 0x3ff;
 }
 
-int AvgAdc(int ch) // was static - merlok
-{
+int AvgAdc(int ch) { // was static - merlok{
        int i;
        int a = 0;
 
@@ -160,13 +171,26 @@ int AvgAdc(int ch) // was static - merlok
        return (a + 15) >> 5;
 }
 
-void MeasureAntennaTuning(void)
-{
-       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
+static int AvgAdc_Voltage_HF(void) {
+       int AvgAdc_Voltage_Low, AvgAdc_Voltage_High;
 
-       LED_B_ON();
+       AvgAdc_Voltage_Low= (MAX_ADC_HF_VOLTAGE_LOW * AvgAdc(ADC_CHAN_HF_LOW)) >> 10;
+       // if voltage range is about to be exceeded, use high voltage ADC channel if available (RDV40 only)
+       if (AvgAdc_Voltage_Low > MAX_ADC_HF_VOLTAGE_LOW - 300) {
+               AvgAdc_Voltage_High = (MAX_ADC_HF_VOLTAGE_HIGH * AvgAdc(ADC_CHAN_HF_HIGH)) >> 10;
+               if (AvgAdc_Voltage_High >= AvgAdc_Voltage_Low) {
+                       return AvgAdc_Voltage_High;
+               }
+       }
+       return AvgAdc_Voltage_Low;
+}
+
+static int AvgAdc_Voltage_LF(void) {
+       return (MAX_ADC_LF_VOLTAGE * AvgAdc(ADC_CHAN_LF)) >> 10;
+}
+
+void MeasureAntennaTuningLfOnly(int *vLf125, int *vLf134, int *peakf, int *peakv, uint8_t LF_Results[]) {
+       int i, adcval = 0, peak = 0;
 
 /*
  * Sweeps the useful LF range of the proxmark from
@@ -176,178 +200,456 @@ void MeasureAntennaTuning(void)
  * the resonating frequency of your LF antenna
  * ( hopefully around 95 if it is tuned to 125kHz!)
  */
-  
-       FpgaDownloadAndGo(FPGA_BITSTREAM_LF);
+
+       FpgaDownloadAndGo(FPGA_BITSTREAM_LF);
        FpgaWriteConfWord(FPGA_MAJOR_MODE_LF_ADC | FPGA_LF_ADC_READER_FIELD);
-       for (i=255; i>=19; i--) {
-    WDT_HIT();
+       SpinDelay(50);
+
+       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);
-               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
-               if(LF_Results[i] > peak) {
-                       peakv = adcval;
+               adcval = AvgAdc_Voltage_LF();
+               if (i == 95) *vLf125 = adcval; // voltage at 125Khz
+               if (i == 89) *vLf134 = adcval; // voltage at 134Khz
+
+               LF_Results[i] = adcval >> 9; // scale int to fit in byte for graphing purposes
+               if (LF_Results[i] > peak) {
+                       *peakv = adcval;
                        peak = LF_Results[i];
-                       peakf = i;
+                       *peakf = i;
                        //ptr = i;
                }
        }
 
-       for (i=18; i >= 0; i--) LF_Results[i] = 0;
-       
-       LED_A_ON();
+       for (i = 18; i >= 0; i--) LF_Results[i] = 0;
+
+       return;
+}
+
+void MeasureAntennaTuningHfOnly(int *vHf) {
        // Let the FPGA drive the high-frequency antenna around 13.56 MHz.
-       FpgaDownloadAndGo(FPGA_BITSTREAM_HF);
-       FpgaWriteConfWord(FPGA_MAJOR_MODE_HF_READER_RX_XCORR);
+       LED_A_ON();
+       FpgaDownloadAndGo(FPGA_BITSTREAM_HF);
+       FpgaWriteConfWord(FPGA_MAJOR_MODE_HF_READER);
        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 = AvgAdc_Voltage_HF();
+       LED_A_OFF();
+       return;
+}
+
+void MeasureAntennaTuning(int mode) {
+       uint8_t LF_Results[256] = {0};
+       int peakv = 0, peakf = 0;
+       int vLf125 = 0, vLf134 = 0, vHf = 0; // in mV
 
-       cmd_send(CMD_MEASURED_ANTENNA_TUNING,vLf125|(vLf134<<16),vHf,peakf|(peakv<<16),LF_Results,256);
+       LED_B_ON();
+
+       if (((mode & FLAG_TUNE_ALL) == FLAG_TUNE_ALL) && (FpgaGetCurrent() == FPGA_BITSTREAM_HF)) {
+               // Reverse "standard" order if HF already loaded, to avoid unnecessary swap.
+               MeasureAntennaTuningHfOnly(&vHf);
+               MeasureAntennaTuningLfOnly(&vLf125, &vLf134, &peakf, &peakv, LF_Results);
+       } else {
+               if (mode & FLAG_TUNE_LF) {
+                       MeasureAntennaTuningLfOnly(&vLf125, &vLf134, &peakf, &peakv, LF_Results);
+               }
+               if (mode & FLAG_TUNE_HF) {
+                       MeasureAntennaTuningHfOnly(&vHf);
+               }
+       }
+
+       cmd_send(CMD_MEASURED_ANTENNA_TUNING, vLf125>>1 | (vLf134>>1<<16), vHf, peakf | (peakv>>1<<16), LF_Results, 256);
        FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
-       LED_A_OFF();
        LED_B_OFF();
        return;
 }
 
-void MeasureAntennaTuningHf(void)
-{
-       int vHf = 0;    // in mV
+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);
+
        for (;;) {
-               // 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;
+               SpinDelay(500);
+               vHf = AvgAdc_Voltage_HF();
 
                Dbprintf("%d mV",vHf);
                if (BUTTON_PRESS()) break;
        }
        DbpString("cancelled");
-}
 
+       FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
 
-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);
+void ReadMem(int addr) {
+       const uint8_t *data = ((uint8_t *)addr);
 
-       FpgaSetupSsc();
+       Dbprintf("%x: %02x %02x %02x %02x %02x %02x %02x %02x",
+               addr, data[0], data[1], data[2], data[3], data[4], data[5], data[6], data[7]);
+}
 
-       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;
+/* 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, _bootrom_start, _bootrom_end, __data_src_start__;
 
-                       v <<= 1;
-                       if(r & 1) {
-                               v |= 1;
-                       }
-                       p++;
 
-                       if(p >= 8) {
-                               dest[i] = v;
-                               v = 0;
-                               p = 0;
-                               i++;
+void set_hw_capabilities(void) {
+       if (I2C_is_available()) {
+               hw_capabilities |= HAS_SMARTCARD_SLOT;
+       }
 
-                               if(i >= HF_14B_SNOOP_BUFFER_SIZE) {
-                                       break;
-                               }
-                       }
-               }
+       if (false) { // TODO: implement a test
+               hw_capabilities |= HAS_EXTRA_FLASH_MEM;
        }
-       DbpString("simulate tag (now type bitsamples)");
 }
 
-void ReadMem(int addr)
-{
-       const uint8_t *data = ((uint8_t *)addr);
 
-       Dbprintf("%x: %02x %02x %02x %02x %02x %02x %02x %02x",
-               addr, data[0], data[1], data[2], data[3], data[4], data[5], data[6], data[7]);
-}
+void SendVersion(void) {
+       set_hw_capabilities();
 
-/* 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;
-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");
+       if (bootrom_version < &_flash_start || bootrom_version >= &_flash_end) {
+               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);
+
+       for (int i = 0; i < fpga_bitstream_num; i++) {
+               strncat(VersionString, fpga_version_information[i], sizeof(VersionString) - strlen(VersionString) - 1);
+               strncat(VersionString, "\n", 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);
+       // test availability of SmartCard slot
+       if (I2C_is_available()) {
+               strncat(VersionString, "SmartCard Slot: available\n", sizeof(VersionString) - strlen(VersionString) - 1);
+       } else {
+               strncat(VersionString, "SmartCard Slot: not available\n", 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, hw_capabilities, VersionString, strlen(VersionString));
 }
 
-#ifdef WITH_LF
-// samy's sniff and repeat routine
-void SamyRun()
-{
-       DbpString("Stand-alone mode! No PC necessary.");
-       FpgaDownloadAndGo(FPGA_BITSTREAM_LF);
+// 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) {
+       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;
+
+       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));
+
+}
 
-       int high[OPTS], low[OPTS];
+/**
+  * Prints runtime information about the PM3.
+**/
+void SendStatus(void) {
+       BigBuf_print_status();
+       Fpga_print_status();
+#ifdef WITH_SMARTCARD
+       I2C_print_status();
+#endif
+       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_StandAlone)
+
+#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_RED,    200);
        LED(LED_ORANGE, 200);
-       LED(LED_GREEN,  200);
+       LED(LED_GREEN,  200);
        LED(LED_ORANGE, 200);
-       LED(LED_RED,    200);
+       LED(LED_RED,    200);
        LED(LED_ORANGE, 200);
-       LED(LED_GREEN,  200);
+       LED(LED_GREEN,  200);
        LED(LED_ORANGE, 200);
-       LED(LED_RED,    200);
+       LED(LED_RED,    200);
+}
+
+#endif
+
+
+
+#ifdef WITH_ISO14443a_StandAlone
+void StandAloneMode14a() {
+       StandAloneMode();
+       FpgaDownloadAndGo(FPGA_BITSTREAM_HF);
+
+       int selected = 0;
+       bool playing = false, GotoRecord = false, GotoClone = false;
+       bool cardRead[OPTS] = {false};
+       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 (GotoRecord || !cardRead[selected]) {
+                       GotoRecord = false;
+                       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;
+                                       } else {
+                                               Dbprintf("Button press detected but no stored tag to play. (Ignoring button)");
+                                               SpinDelay(300);
+                                       }
+                               }
+                               if (!iso14443a_select_card(uid, &hi14a_card[selected], &cuid, true, 0, true))
+                                       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 = true;
+
+                       cardRead[selected] = true;
+               } else if (GotoClone) { /* MF Classic UID clone */
+                       GotoClone=false;
+                       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 = true;
+                       } 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] = false; // Only if the card was cloned successfully should we clear it
+                                       playing = false;
+                                       GotoRecord = true;
+                                       selected = (selected+1) % OPTS;
+                               } else {
+                                       Dbprintf("Clone failed. Back to replay mode on bank[%d]", selected);
+                                       playing = true;
+                               }
+                       }
+                       LEDsoff();
+                       LED(selected + 1, 0);
+
+               } else if (playing) {
+                       // button_pressed == BUTTON_SINGLE_CLICK && cardRead[selected])
+                       // Change where to record (or begin playing)
+                       LEDsoff();
+                       LED(selected + 1, 0);
+
+                       // Begin transmitting
+                       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);
+                                       GotoRecord = true;
+                                       break;
+                               } else if (button_action == BUTTON_HOLD) {
+                                       Dbprintf("Playtime over. Begin cloning...");
+                                       GotoClone = true;
+                                       break;
+                               }
+                               WDT_HIT();
+                       }
+
+                       /* We pressed a button so ignore it here with a delay */
+                       SpinDelay(300);
+                       LEDsoff();
+                       LED(selected + 1, 0);
+               }
+       }
+}
 
+#elif WITH_LF_StandAlone
+
+// samy's sniff and repeat routine
+void SamyRun() {
+       StandAloneMode();
+       FpgaDownloadAndGo(FPGA_BITSTREAM_LF);
+
+       int tops[OPTS], high[OPTS], low[OPTS];
        int selected = 0;
        int playing = 0;
        int cardRead = 0;
@@ -355,18 +657,16 @@ 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);
                SpinDelay(300);
 
                // Button was held for a second, begin recording
-               if (button_pressed > 0 && cardRead == 0)
-               {
+               if (button_pressed > 0 && cardRead == 0) {
                        LEDsoff();
                        LED(selected + 1, 0);
                        LED(LED_RED2, 0);
@@ -381,8 +681,11 @@ void SamyRun()
                        /* need this delay to prevent catching some weird data */
                        SpinDelay(500);
 
-                       CmdHIDdemodFSK(1, &high[selected], &low[selected], 0);
-                       Dbprintf("Recorded %x %x %x", selected, high[selected], low[selected]);
+                       CmdHIDdemodFSK(1, &tops[selected], &high[selected], &low[selected], 0);
+                       if (tops[selected] > 0)
+                               Dbprintf("Recorded %x %x%08x%08x", selected, tops[selected], high[selected], low[selected]);
+                       else
+                               Dbprintf("Recorded %x %x%08x", selected, high[selected], low[selected]);
 
                        LEDsoff();
                        LED(selected + 1, 0);
@@ -391,45 +694,46 @@ 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);
+               } else if (button_pressed > 0 && cardRead == 1) {
+                       LEDsoff();
+                       LED(selected + 1, 0);
+                       LED(LED_ORANGE, 0);
+
+                       // record
+                       if (tops[selected] > 0)
+                               Dbprintf("Cloning %x %x%08x%08x", selected, tops[selected], high[selected], low[selected]);
+                       else
+                               Dbprintf("Cloning %x %x%08x", selected, high[selected], low[selected]);
 
-                                       // record
-                                       Dbprintf("Cloning %x %x %x", 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(tops[selected] & 0x000FFFFF, high[selected], low[selected], (tops[selected] != 0 && ((high[selected]& 0xFFFFFFC0) != 0)), 0x1D);
+                       if (tops[selected] > 0)
+                               Dbprintf("Cloned %x %x%08x%08x", selected, tops[selected], high[selected], low[selected]);
+                       else
+                               Dbprintf("Cloned %x %x%08x", selected, high[selected], low[selected]);
 
-                                       CopyHIDtoT55x7(high[selected], low[selected], 0, 0);
-                                       Dbprintf("Cloned %x %x %x", 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;
 
-               // Change where to record (or begin playing)
-               else if (button_pressed)
-               {
+                       cardRead = 0;
+
+               } else if (button_pressed) {
+
+                       // Change where to record (or begin playing)
                        // Next option if we were previously playing
                        if (playing)
                                selected = (selected + 1) % OPTS;
@@ -439,22 +743,24 @@ void SamyRun()
                        LED(selected + 1, 0);
 
                        // Begin transmitting
-                       if (playing)
-                       {
+                       if (playing) {
                                LED(LED_GREEN, 0);
                                DbpString("Playing");
                                // 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);
+                               if (tops[selected] > 0)
+                                       Dbprintf("%x %x%08x%08x", selected, tops[selected], high[selected], low[selected]);
+                               else
+                                       Dbprintf("%x %x%08x", selected, high[selected], low[selected]);
+
+                               CmdHIDsimTAG(tops[selected], 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);
@@ -464,13 +770,13 @@ void SamyRun()
                                playing = !playing;
                                LEDsoff();
                                LED(selected + 1, 0);
-                       }
-                       else
+                       } else
                                while(BUTTON_PRESS())
                                        WDT_HIT();
                }
        }
 }
+
 #endif
 
 /*
@@ -508,36 +814,44 @@ static const char LIGHT_SCHEME[] = {
                0xE, /* -XXX     | 86% of maximum current detected */
                0xF, /* XXXX     | 100% of maximum current detected */
 };
+
 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;
+void ListenReaderField(int limit) {
+       int lf_av, lf_av_new=0, lf_baseline= 0, lf_max;
+       int hf_av, hf_av_new=0,  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_PERCENT      5    // report new values only if they have changed at least by REPORT_CHANGE_PERCENT
+#define MIN_HF_FIELD             300    // in mode 1 signal HF field greater than MIN_HF_FIELD above baseline
+#define MIN_LF_FIELD            1200    // in mode 1 signal LF field greater than MIN_LF_FIELD above baseline
+
+
+       // 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_Voltage_LF();
 
-       if(limit != HF_ONLY) {
-               Dbprintf("LF 125/134 Baseline: %d", lf_av);
+       if (limit != HF_ONLY) {
+               Dbprintf("LF 125/134kHz Baseline: %dmV", lf_av);
                lf_baseline = lf_av;
        }
 
-       hf_av=hf_max=ReadAdc(ADC_CHAN_HF);
+       hf_av = hf_max = AvgAdc_Voltage_HF();
 
        if (limit != LF_ONLY) {
-               Dbprintf("HF 13.56 Baseline: %d", hf_av);
+               Dbprintf("HF 13.56MHz Baseline: %dmV", hf_av);
                hf_baseline = hf_av;
        }
 
        for(;;) {
+               SpinDelay(500);
                if (BUTTON_PRESS()) {
-                       SpinDelay(500);
                        switch (mode) {
                                case 1:
                                        mode=2;
@@ -550,46 +864,49 @@ void ListenReaderField(int limit)
                                        return;
                                        break;
                        }
+                       while (BUTTON_PRESS())
+                               /* wait */;
                }
                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 (lf_av - lf_baseline > MIN_LF_FIELD)
+                                       LED_D_ON();
+                               else
+                                       LED_D_OFF();
                        }
 
-                       ++lf_count;
-                       lf_av_new= ReadAdc(ADC_CHAN_LF);
+                       lf_av_new = AvgAdc_Voltage_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) * 100 / (lf_av?lf_av:1)) > REPORT_CHANGE_PERCENT) {
+                               Dbprintf("LF 125/134kHz Field Change: %5dmV", lf_av_new);
                                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 (hf_av - hf_baseline > MIN_HF_FIELD)
+                                       LED_B_ON();
+                               else
+                                       LED_B_OFF();
                        }
 
-                       ++hf_count;
-                       hf_av_new= ReadAdc(ADC_CHAN_HF);
+                       hf_av_new = AvgAdc_Voltage_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) * 100 / (hf_av?hf_av:1)) > REPORT_CHANGE_PERCENT) {
+                               Dbprintf("HF 13.56MHz Field Change: %5dmV", hf_av_new);
                                hf_av = hf_av_new;
                                if (hf_av > hf_max)
                                        hf_max = hf_av;
-                               hf_count= 0;
                        }
                }
 
-               if(mode == 2) {
+               if (mode == 2) {
                        if (limit == LF_ONLY) {
                                display_val = lf_av;
                                display_max = lf_max;
@@ -605,8 +922,8 @@ void ListenReaderField(int limit)
                                        display_max = lf_max;
                                }
                        }
-                       for (i=0; i<LIGHT_LEN; i++) {
-                               if (display_val >= ((display_max/LIGHT_LEN)*i) && display_val <= ((display_max/LIGHT_LEN)*(i+1))) {
+                       for (i = 0; i < LIGHT_LEN; i++) {
+                               if (display_val >= (display_max / LIGHT_LEN * i) && display_val <= (display_max / LIGHT_LEN * (i+1))) {
                                        if (LIGHT_SCHEME[i] & 0x1) LED_C_ON(); else LED_C_OFF();
                                        if (LIGHT_SCHEME[i] & 0x2) LED_A_ON(); else LED_A_OFF();
                                        if (LIGHT_SCHEME[i] & 0x4) LED_B_ON(); else LED_B_OFF();
@@ -618,19 +935,20 @@ void ListenReaderField(int limit)
        }
 }
 
-void UsbPacketReceived(uint8_t *packet, int len)
-{
+
+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]);
-  
+
        switch(c->cmd) {
 #ifdef WITH_LF
                case CMD_SET_LF_SAMPLING_CONFIG:
-                       setSamplingConfig((sample_config *) c->d.asBytes);
+                       setSamplingConfig(c->d.asBytes);
                        break;
                case CMD_ACQUIRE_RAW_ADC_SAMPLES_125K:
-                       cmd_send(CMD_ACK,SampleLF(),0,0,0,0);
+                       cmd_send(CMD_ACK,SampleLF(c->arg[0], c->arg[1]),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);
@@ -639,19 +957,32 @@ void UsbPacketReceived(uint8_t *packet, int len)
                        cmd_send(CMD_ACK,SnoopLF(),0,0,0,0);
                        break;
                case CMD_HID_DEMOD_FSK:
-                       CmdHIDdemodFSK(c->arg[0], 0, 0, 1);
+                       CmdHIDdemodFSK(c->arg[0], 0, 0, 0, 1);
                        break;
                case CMD_HID_SIM_TAG:
-                       CmdHIDsimTAG(c->arg[0], c->arg[1], 1);
+                       CmdHIDsimTAG(c->arg[0], c->arg[1], c->arg[2], 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:
-                       CopyHIDtoT55x7(c->arg[0], c->arg[1], c->arg[2], c->d.asBytes[0]);
+                       CopyHIDtoT55x7(c->arg[0], c->arg[1], c->arg[2], c->d.asBytes[0], 0x1D);
+                       break;
+               case CMD_PARADOX_CLONE_TAG:
+                       // Paradox cards are the same as HID, with a different preamble, so we can reuse the same function
+                       CopyHIDtoT55x7(c->arg[0], c->arg[1], c->arg[2], c->d.asBytes[0], 0x0F);
                        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], c->d.asBytes[0]);
+                       CopyIOtoT55x7(c->arg[0], c->arg[1]);
                        break;
                case CMD_EM410X_DEMOD:
                        CmdEM410xdemod(c->arg[0], 0, 0, 1);
@@ -674,29 +1005,49 @@ void UsbPacketReceived(uint8_t *packet, int len)
                        SimulateTagLowFrequencyBidir(c->arg[0], c->arg[1]);
                        break;
                case CMD_INDALA_CLONE_TAG:
-                       CopyIndala64toT55x7(c->arg[0], c->arg[1]);                                      
+                       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[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_PCF7931_BRUTEFORCE:
+                       BruteForcePCF7931(c->arg[0], (c->arg[1] & 0xFF), c->d.asBytes[9], c->d.asBytes[7]-128,c->d.asBytes[8]-128);
                        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_EM4X_PROTECT:
+                       EM4xProtect(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
 
@@ -705,29 +1056,50 @@ void UsbPacketReceived(uint8_t *packet, int len)
                        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);
+                       SimulateHitagTag((bool)c->arg[0], (uint8_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;
+               case CMD_SIMULATE_HITAG_S:// Simulate Hitag s tag, args = memory content
+                       SimulateHitagSTag((bool)c->arg[0],(uint8_t*)c->d.asBytes);
+                       break;
+               case CMD_TEST_HITAGS_TRACES:// Tests every challenge within the given file
+                       check_challenges_cmd((bool)c->arg[0], (uint8_t*)c->d.asBytes, (uint8_t)c->arg[1]);
+                       break;
+               case CMD_READ_HITAG_S://Reader for only Hitag S tags, args = key or challenge
+                       ReadHitagSCmd((hitag_function)c->arg[0], (hitag_data*)c->d.asBytes, (uint8_t)c->arg[1], (uint8_t)c->arg[2], false);
+                       break;
+               case CMD_READ_HITAG_S_BLK:
+                       ReadHitagSCmd((hitag_function)c->arg[0], (hitag_data*)c->d.asBytes, (uint8_t)c->arg[1], (uint8_t)c->arg[2], true);
+                       break;
+               case CMD_WR_HITAG_S://writer for Hitag tags args=data to write,page and key or challenge
+                       if ((hitag_function)c->arg[0] < 10) {
+                               WritePageHitagS((hitag_function)c->arg[0],(hitag_data*)c->d.asBytes,c->arg[2]);
+                       }
+                       else if ((hitag_function)c->arg[0] >= 10) {
+                         WriterHitag((hitag_function)c->arg[0],(hitag_data*)c->d.asBytes, c->arg[2]);
+                       }
+                       break;
 #endif
-            
+
 #ifdef WITH_ISO15693
                case CMD_ACQUIRE_RAW_ADC_SAMPLES_ISO_15693:
                        AcquireRawAdcSamplesIso15693();
                        break;
-               case CMD_RECORD_RAW_ADC_SAMPLES_ISO_15693:
-                       RecordRawAdcSamplesIso15693();
+
+               case CMD_SNOOP_ISO_15693:
+                       SnoopIso15693(0, NULL);
                        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;  
-                       
+                       break;
+
                case CMD_ISO_15693_DEBUG:
                        SetDebugIso15693(c->arg[0]);
                        break;
@@ -735,14 +1107,19 @@ void UsbPacketReceived(uint8_t *packet, int len)
                case CMD_READER_ISO_15693:
                        ReaderIso15693(c->arg[0]);
                        break;
+
                case CMD_SIMTAG_ISO_15693:
                        SimTagIso15693(c->arg[0], c->d.asBytes);
                        break;
+
+               case CMD_CSETUID_ISO_15693:
+                       SetTag15693Uid(c->d.asBytes);
+                       break;
 #endif
 
 #ifdef WITH_LEGICRF
                case CMD_SIMULATE_TAG_LEGIC_RF:
-                       LegicRfSimulate(c->arg[0], c->arg[1], c->arg[2]);
+                       LegicRfSimulate(c->arg[0]);
                        break;
 
                case CMD_WRITER_LEGIC_RF:
@@ -755,20 +1132,17 @@ 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:
-                       ReadSTMemoryIso14443(0x0F);
+                       ReadSTMemoryIso14443b(0x0F);
                        break;
                case CMD_READ_SRIX4K_TAG:
-                       ReadSTMemoryIso14443(0x7F);
+                       ReadSTMemoryIso14443b(0x7F);
                        break;
-               case CMD_SNOOP_ISO_14443:
-                       SnoopIso14443();
+               case CMD_SNOOP_ISO_14443B:
+                       SnoopIso14443b();
                        break;
-               case CMD_SIMULATE_TAG_ISO_14443:
-                       SimulateIso14443Tag();
+               case CMD_SIMULATE_TAG_ISO_14443B:
+                       SimulateIso14443bTag();
                        break;
                case CMD_ISO_14443B_COMMAND:
                        SendRawCommand14443B(c->arg[0],c->arg[1],c->arg[2],c->d.asBytes);
@@ -785,31 +1159,31 @@ void UsbPacketReceived(uint8_t *packet, int len)
                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
                        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]);
                        break;
                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->d.asBytes);
-                       break;
-               case CMD_MIFAREUC_AUTH1:
-                       MifareUC_Auth1(c->arg[0],c->d.asBytes);
+                       MifareUReadBlock(c->arg[0],c->arg[1], c->d.asBytes);
                        break;
-               case CMD_MIFAREUC_AUTH2:
-                       MifareUC_Auth2(c->arg[0],c->d.asBytes);
+               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->d.asBytes);
+                       MifareUReadCard(c->arg[0], c->arg[1], c->arg[2], c->d.asBytes);
                        break;
-               case CMD_MIFAREUC_READCARD:
-                       MifareUReadCard(c->arg[0], c->arg[1], c->d.asBytes);
+               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);
@@ -817,12 +1191,18 @@ 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_MIFARE_PERSONALIZE_UID:
+                       MifarePersonalizeUID(c->arg[0], c->arg[1], 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);
-                        break;
+                       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);
                        break;
@@ -830,9 +1210,9 @@ void UsbPacketReceived(uint8_t *packet, int len)
                        MifareChkKeys(c->arg[0], c->arg[1], c->arg[2], c->d.asBytes);
                        break;
                case CMD_SIMULATE_MIFARE_CARD:
-                       Mifare1ksim(c->arg[0], c->arg[1], c->arg[2], c->d.asBytes);
+                       MifareSim(c->arg[0], c->arg[1], c->arg[2], c->d.asBytes);
                        break;
-               
+
                // emulator
                case CMD_MIFARE_SET_DBGMODE:
                        MifareSetDbgLvl(c->arg[0], c->arg[1], c->arg[2], c->d.asBytes);
@@ -849,8 +1229,11 @@ 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_CWIPE:
+                       MifareCWipe(c->arg[0], c->arg[1], c->arg[2], c->d.asBytes);
+                       break;
                case CMD_MIFARE_CSETBLOCK:
                        MifareCSetBlock(c->arg[0], c->arg[1], c->arg[2], c->d.asBytes);
                        break;
@@ -860,7 +1243,7 @@ void UsbPacketReceived(uint8_t *packet, int len)
                case CMD_MIFARE_CIDENT:
                        MifareCIdent();
                        break;
-                       
+
                // mifare sniffer
                case CMD_MIFARE_SNIFFER:
                        SniffMifare(c->arg[0]);
@@ -871,7 +1254,7 @@ void UsbPacketReceived(uint8_t *packet, int len)
 #ifdef WITH_ICLASS
                // Makes use of ISO14443a FPGA Firmware
                case CMD_SNOOP_ICLASS:
-                       SnoopIClass();
+                       SnoopIClass(c->arg[0], c->d.asBytes);
                        break;
                case CMD_SIMULATE_TAG_ICLASS:
                        SimulateIClass(c->arg[0], c->arg[1], c->arg[2], c->d.asBytes);
@@ -879,21 +1262,70 @@ void UsbPacketReceived(uint8_t *packet, int len)
                case CMD_READER_ICLASS:
                        ReaderIClass(c->arg[0]);
                        break;
-               case CMD_READER_ICLASS_REPLAY:
-                   ReaderIClass_Replay(c->arg[0], c->d.asBytes);
+               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_READBLOCK:
+                       iClass_ReadBlk(c->arg[0]);
+                       break;
+               case CMD_ICLASS_CHECK:
+                       iClass_Check(c->d.asBytes);
+                       break;
+               case CMD_ICLASS_READCHECK:
+                       iClass_Readcheck(c->arg[0], c->arg[1]);
+                       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;
+               case CMD_HF_PLOT:
+                       HfPlot();
                        break;
+#endif
+
+#ifdef WITH_SMARTCARD
+               case CMD_SMART_ATR: {
+                       SmartCardAtr();
+                       break;
+               }
+               case CMD_SMART_SETCLOCK:{
+                       SmartCardSetClock(c->arg[0]);
+                       break;
+               }
+               case CMD_SMART_RAW: {
+                       SmartCardRaw(c->arg[0], c->arg[1], c->d.asBytes);
+                       break;
+               }
+               case CMD_SMART_UPLOAD: {
+                       // upload file from client
+                       uint8_t *mem = BigBuf_get_addr();
+                       memcpy( mem + c->arg[0], c->d.asBytes, USB_CMD_DATA_SIZE);
+                       cmd_send(CMD_ACK,1,0,0,0,0);
+                       break;
+               }
+               case CMD_SMART_UPGRADE: {
+                       SmartCardUpgrade(c->arg[0]);
+                       break;
+               }
+#endif
 
                case CMD_BUFF_CLEAR:
                        BigBuf_Clear();
                        break;
 
                case CMD_MEASURE_ANTENNA_TUNING:
-                       MeasureAntennaTuning();
+                       MeasureAntennaTuning(c->arg[0]);
                        break;
 
                case CMD_MEASURE_ANTENNA_TUNING_HF:
@@ -904,37 +1336,45 @@ void UsbPacketReceived(uint8_t *packet, int len)
                        ListenReaderField(c->arg[0]);
                        break;
 
-               case CMD_FPGA_MAJOR_MODE_OFF:           // ## FPGA Control
+               case CMD_FPGA_MAJOR_MODE_OFF:       // ## FPGA Control
                        FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
                        SpinDelay(200);
                        LED_D_OFF(); // LED D indicates field ON or OFF
                        break;
 
                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,traceLen,BigBuf+c->arg[0]+i,len);
+                               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,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);
                        break;
-               }       
+               }
                case CMD_READ_MEM:
                        ReadMem(c->arg[0]);
                        break;
 
                case CMD_SET_LF_DIVISOR:
-                       FpgaDownloadAndGo(FPGA_BITSTREAM_LF);
+                       FpgaDownloadAndGo(FPGA_BITSTREAM_LF);
                        FpgaSendCommand(FPGA_CMD_SET_DIVISOR, c->arg[0]);
                        break;
 
@@ -950,7 +1390,12 @@ 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();
@@ -983,7 +1428,7 @@ void UsbPacketReceived(uint8_t *packet, int len)
                case CMD_DEVICE_INFO: {
                        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);     
+                       cmd_send(CMD_DEVICE_INFO,dev_info,0,0,0,0);
                        break;
                }
                default:
@@ -992,8 +1437,9 @@ void UsbPacketReceived(uint8_t *packet, int len)
        }
 }
 
-void  __attribute__((noreturn)) AppMain(void)
-{
+
+void  __attribute__((noreturn)) AppMain(void) {
+
        SpinDelay(100);
        clear_trace();
        if(common_area.magic != COMMON_AREA_MAGIC || common_area.version != 1) {
@@ -1004,13 +1450,10 @@ 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;
@@ -1018,7 +1461,7 @@ 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
@@ -1031,26 +1474,27 @@ void  __attribute__((noreturn)) AppMain(void)
        FpgaDownloadAndGo(FPGA_BITSTREAM_HF);
 
        StartTickCount();
-       
+
 #ifdef WITH_LCD
        LCDInit();
 #endif
 
-  byte_t rx[sizeof(UsbCommand)];
+       uint8_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);
-      }
-    }
                WDT_HIT();
-
-#ifdef WITH_LF
-               if (BUTTON_HELD(1000) > 0)
-                       SamyRun();
+               if (usb_poll() && (rx_len = usb_read(rx, sizeof(rx)))) {
+                       UsbPacketReceived(rx, rx_len);
+               } else {
+#if defined(WITH_LF_StandAlone) && !defined(WITH_ISO14443a_StandAlone)
+                       if (BUTTON_HELD(1000) > 0)
+                               SamyRun();
 #endif
+#if defined(WITH_ISO14443a) && defined(WITH_ISO14443a_StandAlone)
+                       if (BUTTON_HELD(1000) > 0)
+                               StandAloneMode14a();
+#endif
+               }
        }
 }
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