add nested auth decoding to `hf mf sniff`

[proxmark3-svn] / armsrc / appmain.c

diff --git a/armsrc/appmain.c b/armsrc/appmain.c
index e7324723f3049dc8ab3327f27d9f546f445827af..6476892235facc30fbf41a32b9636656ebb59d19 100644 (file)
--- a/armsrc/appmain.c
+++ b/armsrc/appmain.c
@@ -10,19 +10,18 @@
 // executes.
 //-----------------------------------------------------------------------------
 
 // executes.
 //-----------------------------------------------------------------------------
 

+#include <stdarg.h>
+

 #include "usb_cdc.h"
 #include "cmd.h"
 #include "usb_cdc.h"
 #include "cmd.h"

-

 #include "proxmark3.h"
 #include "apps.h"
 #include "util.h"
 #include "printf.h"
 #include "string.h"
 #include "proxmark3.h"
 #include "apps.h"
 #include "util.h"
 #include "printf.h"
 #include "string.h"

-
-#include <stdarg.h>
-

 #include "legicrf.h"
 #include "legicrf.h"

-#include <hitag2.h>
+#include "hitag2.h"
+#include "hitagS.h"

 #include "lfsampling.h"
 #include "BigBuf.h"
 #include "mifareutil.h"
 #include "lfsampling.h"
 #include "BigBuf.h"
 #include "mifareutil.h"


@@ -36,8 +35,6 @@
  #include "iso14443a.h"
 #endif
 
  #include "iso14443a.h"
 #endif
 

-#define abs(x) ( ((x)<0) ? -(x) : (x) )
-

 //=============================================================================
 // A buffer where we can queue things up to be sent through the FPGA, for
 // any purpose (fake tag, as reader, whatever). We go MSB first, since that
 //=============================================================================
 // A buffer where we can queue things up to be sent through the FPGA, for
 // any purpose (fake tag, as reader, whatever). We go MSB first, since that


@@ -138,35 +135,28 @@ void Dbhexdump(int len, uint8_t *d, bool bAsci) {
 // return that.
 //-----------------------------------------------------------------------------
 static int ReadAdc(int ch)
 // return that.
 //-----------------------------------------------------------------------------
 static int ReadAdc(int ch)

-{
-       uint32_t d;
-
-       AT91C_BASE_ADC->ADC_CR = AT91C_ADC_SWRST;
-       AT91C_BASE_ADC->ADC_MR =
-               ADC_MODE_PRESCALE(63  /* was 32 */) |                                                   // ADC_CLK = MCK / ((63+1) * 2) = 48MHz / 128 = 375kHz
-               ADC_MODE_STARTUP_TIME(1  /* was 16 */) |                                                // Startup Time = (1+1) * 8 / ADC_CLK = 16 / 375kHz = 42,7us     Note: must be > 20us
-               ADC_MODE_SAMPLE_HOLD_TIME(15  /* was 8 */);                                     // Sample & Hold Time SHTIM = 15 / ADC_CLK = 15 / 375kHz = 40us
-
+{      

        // Note: ADC_MODE_PRESCALE and ADC_MODE_SAMPLE_HOLD_TIME are set to the maximum allowed value. 
        // Note: ADC_MODE_PRESCALE and ADC_MODE_SAMPLE_HOLD_TIME are set to the maximum allowed value. 

-       // Both AMPL_LO and AMPL_HI are very high impedance (10MOhm) outputs, the input capacitance of the ADC is 12pF (typical). This results in a time constant
-       // of RC = 10MOhm * 12pF = 120us. Even after the maximum configurable sample&hold time of 40us the input capacitor will not be fully charged. 
+       // AMPL_HI is are 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
        //
        // 
        // The maths are:
        // If there is a voltage v_in at the input, the voltage v_cap at the capacitor (this is what we are measuring) will be
        //

-       //       v_cap = v_in * (1 - exp(-RC/SHTIM))  =   v_in * (1 - exp(-3))  =  v_in * 0,95                   (i.e. an error of 5%)
-       // 
-       // Note: with the "historic" values in the comments above, the error was 34%  !!!
-       
-       AT91C_BASE_ADC->ADC_CHER = ADC_CHANNEL(ch);
+       //       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_START;
+       AT91C_BASE_ADC->ADC_CR = AT91C_ADC_SWRST;
+       AT91C_BASE_ADC->ADC_MR =
+               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

 
 

-       while(!(AT91C_BASE_ADC->ADC_SR & ADC_END_OF_CONVERSION(ch)))
-               ;
-       d = AT91C_BASE_ADC->ADC_CDR[ch];
+       AT91C_BASE_ADC->ADC_CHER = ADC_CHANNEL(ch);
+       AT91C_BASE_ADC->ADC_CR = AT91C_ADC_START;

 
 

-       return d;
+       while(!(AT91C_BASE_ADC->ADC_SR & ADC_END_OF_CONVERSION(ch))) {};
+       
+       return AT91C_BASE_ADC->ADC_CDR[ch];

 }
 
 int AvgAdc(int ch) // was static - merlok
 }
 
 int AvgAdc(int ch) // was static - merlok


@@ -181,13 +171,9 @@ int AvgAdc(int ch) // was static - merlok
        return (a + 15) >> 5;
 }
 
        return (a + 15) >> 5;
 }
 

-void MeasureAntennaTuning(void)
+void MeasureAntennaTuningLfOnly(int *vLf125, int *vLf134, int *peakf, int *peakv, uint8_t LF_Results[])

 {
 {

-       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
-
-       LED_B_ON();
+       int i, adcval = 0, peak = 0;

 
 /*
  * Sweeps the useful LF range of the proxmark from
 
 /*
  * Sweeps the useful LF range of the proxmark from


@@ -197,38 +183,69 @@ void MeasureAntennaTuning(void)
  * the resonating frequency of your LF antenna
  * ( hopefully around 95 if it is tuned to 125kHz!)
  */
  * 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);
        FpgaWriteConfWord(FPGA_MAJOR_MODE_LF_ADC | FPGA_LF_ADC_READER_FIELD);

+       SpinDelay(50);
+       

        for (i=255; i>=19; i--) {
        for (i=255; i>=19; i--) {

-    WDT_HIT();
+               WDT_HIT();

                FpgaSendCommand(FPGA_CMD_SET_DIVISOR, i);
                SpinDelay(20);
                adcval = ((MAX_ADC_LF_VOLTAGE * AvgAdc(ADC_CHAN_LF)) >> 10);
                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
+               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 >> 9; // scale int to fit in byte for graphing purposes

                if(LF_Results[i] > peak) {
                if(LF_Results[i] > peak) {

-                       peakv = adcval;
+                       *peakv = adcval;

                        peak = LF_Results[i];
                        peak = LF_Results[i];

-                       peakf = i;
+                       *peakf = i;

                        //ptr = i;
                }
        }
 
        for (i=18; i >= 0; i--) LF_Results[i] = 0;
                        //ptr = i;
                }
        }
 
        for (i=18; i >= 0; i--) LF_Results[i] = 0;

-       
-       LED_A_ON();
+
+       return;
+}
+
+void MeasureAntennaTuningHfOnly(int *vHf)
+{

        // Let the FPGA drive the high-frequency antenna around 13.56 MHz.
        // Let the FPGA drive the high-frequency antenna around 13.56 MHz.

-       FpgaDownloadAndGo(FPGA_BITSTREAM_HF);
+       LED_A_ON();
+       FpgaDownloadAndGo(FPGA_BITSTREAM_HF);

        FpgaWriteConfWord(FPGA_MAJOR_MODE_HF_READER_RX_XCORR);
        SpinDelay(20);
        FpgaWriteConfWord(FPGA_MAJOR_MODE_HF_READER_RX_XCORR);
        SpinDelay(20);

-       vHf = (MAX_ADC_HF_VOLTAGE * AvgAdc(ADC_CHAN_HF)) >> 10;
+       *vHf = (MAX_ADC_HF_VOLTAGE * AvgAdc(ADC_CHAN_HF)) >> 10;
+       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
+
+       LED_B_ON();

 
 

-       cmd_send(CMD_MEASURED_ANTENNA_TUNING, vLf125 | (vLf134<<16), vHf, peakf | (peakv<<16), LF_Results, 256);
+       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);
        FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);

-       LED_A_OFF();

        LED_B_OFF();
        return;
 }
        LED_B_OFF();
        return;
 }


@@ -428,7 +445,7 @@ void StandAloneMode14a()
                                                SpinDelay(300);
                                        }
                                }
                                                SpinDelay(300);
                                        }
                                }

-                               if (!iso14443a_select_card(uid, &hi14a_card[selected], &cuid))
+                               if (!iso14443a_select_card(uid, &hi14a_card[selected], &cuid, true, 0, true))

                                        continue;
                                else
                                {
                                        continue;
                                else
                                {


@@ -662,7 +679,7 @@ void SamyRun()
                        SpinDelay(500);
 
                        CmdHIDdemodFSK(1, &high[selected], &low[selected], 0);
                        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);
 
                        LEDsoff();
                        LED(selected + 1, 0);


@@ -683,7 +700,7 @@ void SamyRun()
                                        LED(LED_ORANGE, 0);
 
                                        // record
                                        LED(LED_ORANGE, 0);
 
                                        // record

-                                       Dbprintf("Cloning %x %x %x", selected, high[selected], low[selected]);
+                                       Dbprintf("Cloning %x %x%08x", selected, high[selected], low[selected]);

 
                                        // wait for button to be released
                                        while(BUTTON_PRESS())
 
                                        // wait for button to be released
                                        while(BUTTON_PRESS())


@@ -692,8 +709,8 @@ void SamyRun()
                                        /* 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);
 
                                        LEDsoff();
                                        LED(selected + 1, 0);


@@ -726,7 +743,7 @@ void SamyRun()
                                // wait for button to be released
                                while(BUTTON_PRESS())
                                        WDT_HIT();
                                // wait for button to be released
                                while(BUTTON_PRESS())
                                        WDT_HIT();

-                               Dbprintf("%x %x %x", selected, high[selected], low[selected]);
+                               Dbprintf("%x %x%08x", selected, high[selected], low[selected]);

                                CmdHIDsimTAG(high[selected], low[selected], 0);
                                DbpString("Done playing");
                                if (BUTTON_HELD(1000) > 0)
                                CmdHIDsimTAG(high[selected], low[selected], 0);
                                DbpString("Done playing");
                                if (BUTTON_HELD(1000) > 0)


@@ -841,7 +858,7 @@ void ListenReaderField(int limit)
 
                if (limit != HF_ONLY) {
                        if(mode == 1) {
 
                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();
                                        LED_D_ON();
                                else
                                        LED_D_OFF();


@@ -849,7 +866,7 @@ void ListenReaderField(int limit)
 
                        lf_av_new = AvgAdc(ADC_CHAN_LF);
                        // see if there's a significant change
 
                        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)
                                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)


@@ -859,7 +876,7 @@ void ListenReaderField(int limit)
 
                if (limit != LF_ONLY) {
                        if (mode == 1){
 
                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();
                                        LED_B_ON();
                                else
                                        LED_B_OFF();


@@ -867,7 +884,7 @@ void ListenReaderField(int limit)
 
                        hf_av_new = AvgAdc(ADC_CHAN_HF);
                        // see if there's a significant change
 
                        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)
                                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)


@@ -916,7 +933,7 @@ void UsbPacketReceived(uint8_t *packet, int len)
                        setSamplingConfig((sample_config *) c->d.asBytes);
                        break;
                case CMD_ACQUIRE_RAW_ADC_SAMPLES_125K:
                        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], 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);
                        break;
                case CMD_MOD_THEN_ACQUIRE_RAW_ADC_SAMPLES_125K:
                        ModThenAcquireRawAdcSamples125k(c->arg[0],c->arg[1],c->arg[2],c->d.asBytes);


@@ -993,14 +1010,20 @@ void UsbPacketReceived(uint8_t *packet, int len)
                        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:
                        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:
                        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;
                        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
 
 #ifdef WITH_HITAG
 #endif
 
 #ifdef WITH_HITAG


@@ -1013,6 +1036,23 @@ 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_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
+                       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
 #endif
 
 #ifdef WITH_ISO15693


@@ -1123,6 +1163,9 @@ void UsbPacketReceived(uint8_t *packet, int len)
                case CMD_MIFAREU_WRITEBL:
                        MifareUWriteBlock(c->arg[0], c->arg[1], c->d.asBytes);
                        break;
                case CMD_MIFAREU_WRITEBL:
                        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;
                case CMD_MIFARE_NESTED:
                        MifareNested(c->arg[0], c->arg[1], c->arg[2], c->d.asBytes);
                        break;


@@ -1151,6 +1194,9 @@ void UsbPacketReceived(uint8_t *packet, int len)
                        break;
                        
                // Work with "magic Chinese" card
                        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;
                case CMD_MIFARE_CSETBLOCK:
                        MifareCSetBlock(c->arg[0], c->arg[1], c->arg[2], c->d.asBytes);
                        break;


@@ -1215,7 +1261,7 @@ void UsbPacketReceived(uint8_t *packet, int len)
                        break;
 
                case CMD_MEASURE_ANTENNA_TUNING:
                        break;
 
                case CMD_MEASURE_ANTENNA_TUNING:

-                       MeasureAntennaTuning();
+                       MeasureAntennaTuning(c->arg[0]);

                        break;
 
                case CMD_MEASURE_ANTENNA_TUNING_HF:
                        break;
 
                case CMD_MEASURE_ANTENNA_TUNING_HF:


@@ -1246,6 +1292,15 @@ void UsbPacketReceived(uint8_t *packet, int len)
                        break;
 
                case CMD_DOWNLOADED_SIM_SAMPLES_125K: {
                        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);
                        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);


@@ -1256,7 +1311,7 @@ void UsbPacketReceived(uint8_t *packet, int len)
                        break;
 
                case CMD_SET_LF_DIVISOR:
                        break;
 
                case CMD_SET_LF_DIVISOR:

-                       FpgaDownloadAndGo(FPGA_BITSTREAM_LF);
+                       FpgaDownloadAndGo(FPGA_BITSTREAM_LF);

                        FpgaSendCommand(FPGA_CMD_SET_DIVISOR, c->arg[0]);
                        break;
 
                        FpgaSendCommand(FPGA_CMD_SET_DIVISOR, c->arg[0]);
                        break;