Documentation to apps.h, documentation/renaming to iclass

[proxmark3-svn] / client / cmdhf15.c

diff --git a/client/cmdhf15.c b/client/cmdhf15.c
index a13ac4d031a779b249ab4d6ee47cda675abb48f6..b1e04e9ab7a4362725fc0e47b8e98fa826b36a38 100644 (file)
--- a/client/cmdhf15.c
+++ b/client/cmdhf15.c
@@ -26,10 +26,12 @@
 #include <stdlib.h>
 #include <string.h>
 #include <stdint.h>
 #include <stdlib.h>
 #include <string.h>
 #include <stdint.h>

-#include "proxusb.h"
+
+#include "proxmark3.h"

 #include "data.h"
 #include "graph.h"
 #include "ui.h"
 #include "data.h"
 #include "graph.h"
 #include "ui.h"

+#include "util.h"

 #include "cmdparser.h"
 #include "cmdhf15.h"
 #include "iso15693tools.h"
 #include "cmdparser.h"
 #include "cmdhf15.h"
 #include "iso15693tools.h"


@@ -44,8 +46,6 @@
 #define AddCrc(data,datalen)  Iso15693AddCrc(data,datalen)
 #define sprintUID(target,uid)  Iso15693sprintUID(target,uid)
 
 #define AddCrc(data,datalen)  Iso15693AddCrc(data,datalen)
 #define sprintUID(target,uid)  Iso15693sprintUID(target,uid)
 

-static int CmdHelp(const char *Cmd);
-

 // structure and database for uid -> tagtype lookups 
 typedef struct { 
        uint64_t uid;
 // structure and database for uid -> tagtype lookups 
 typedef struct { 
        uint64_t uid;


@@ -59,8 +59,10 @@ const productName uidmapping[] = {
        { 0xE001000000000000LL, 16, "Motorola" },
        { 0xE002000000000000LL, 16, "ST Microelectronics" },
        { 0xE003000000000000LL, 16, "Hitachi" },
        { 0xE001000000000000LL, 16, "Motorola" },
        { 0xE002000000000000LL, 16, "ST Microelectronics" },
        { 0xE003000000000000LL, 16, "Hitachi" },

-       { 0xE004000000000000LL, 16, "Philips" },
-       { 0xE004010000000000LL, 24, "Philips; IC SL2 ICS20" },
+       { 0xE004000000000000LL, 16, "NXP(Philips)" },
+       { 0xE004010000000000LL, 24, "NXP(Philips); IC SL2 ICS20/ICS21(SLI) ICS2002/ICS2102(SLIX)" },
+       { 0xE004020000000000LL, 24, "NXP(Philips); IC SL2 ICS53/ICS54(SLI-S) ICS5302/ICS5402(SLIX-S)" },
+       { 0xE004030000000000LL, 24, "NXP(Philips); IC SL2 ICS50/ICS51(SLI-L) ICS5002/ICS5102(SLIX-L)" },

        { 0xE005000000000000LL, 16, "Infineon" },
        { 0xE005400000000000LL, 24, "Infineon; 56x32bit" },
        { 0xE006000000000000LL, 16, "Cylinc" },
        { 0xE005000000000000LL, 16, "Infineon" },
        { 0xE005400000000000LL, 24, "Infineon; 56x32bit" },
        { 0xE006000000000000LL, 16, "Cylinc" },


@@ -94,7 +96,7 @@ const productName uidmapping[] = {
 // returns 1 if suceeded
 int getUID(uint8_t *buf) 
 {
 // returns 1 if suceeded
 int getUID(uint8_t *buf) 
 {

-       UsbCommand *r;  
+       UsbCommand resp;

        uint8_t *recv;
        UsbCommand c = {CMD_ISO_15693_COMMAND, {0, 1, 1}}; // len,speed,recv?
        uint8_t *req=c.d.asBytes;
        uint8_t *recv;
        UsbCommand c = {CMD_ISO_15693_COMMAND, {0, 1, 1}}; // len,speed,recv?
        uint8_t *req=c.d.asBytes;


@@ -111,11 +113,9 @@ int getUID(uint8_t *buf)
        
                SendCommand(&c);
                
        
                SendCommand(&c);
                

-               r=WaitForResponseTimeout(CMD_ACK,1000);
-               
-               if (r!=NULL) {
-                       recv = r->d.asBytes;
-                       if (r->arg[0]>=12 && ISO15_CRC_CHECK==Crc(recv,12)) {
+               if (WaitForResponseTimeout(CMD_ACK,&resp,1000)) {
+                       recv = resp.d.asBytes;
+                       if (resp.arg[0]>=12 && ISO15_CRC_CHECK==Crc(recv,12)) {

                           memcpy(buf,&recv[2],8);
                           return 1;
                        } 
                           memcpy(buf,&recv[2],8);
                           return 1;
                        } 


@@ -276,7 +276,28 @@ int CmdHF15Reader(const char *Cmd)
 // Simulation is still not working very good
 int CmdHF15Sim(const char *Cmd)
 {
 // Simulation is still not working very good
 int CmdHF15Sim(const char *Cmd)
 {

-       UsbCommand c = {CMD_SIMTAG_ISO_15693, {strtol(Cmd, NULL, 0), 0, 0}};
+       char cmdp = param_getchar(Cmd, 0);
+       uint8_t uid[8] = {0x00};
+
+       //E0 16 24 00 00 00 00 00
+       if (cmdp == 'h' || cmdp == 'H') {
+               PrintAndLog("Usage:  hf 15 sim <UID>");
+               PrintAndLog("");
+               PrintAndLog("     sample: hf 15 sim E016240000000000");
+               return 0;
+       }
+
+       if (param_gethex(Cmd, 0, uid, 16)) {
+               PrintAndLog("UID must include 16 HEX symbols");
+               return 0;
+       }
+       
+       PrintAndLog("Starting simulating UID %02X %02X %02X %02X %02X %02X %02X %02X",
+                       uid[0],uid[1],uid[2],uid[3],uid[4], uid[5], uid[6], uid[7]);
+
+       UsbCommand c = {CMD_SIMTAG_ISO_15693, {0, 0, 0}};
+       memcpy(c.d.asBytes,uid,8);
+       

        SendCommand(&c);
        return 0;
 }
        SendCommand(&c);
        return 0;
 }


@@ -292,7 +313,7 @@ int CmdHF15Afi(const char *Cmd)
 
 // Reads all memory pages
 int CmdHF15DumpMem(const char*Cmd) {
 
 // Reads all memory pages
 int CmdHF15DumpMem(const char*Cmd) {

-       UsbCommand *r;  
+       UsbCommand resp;

        uint8_t uid[8]; 
        uint8_t *recv=NULL;
        UsbCommand c = {CMD_ISO_15693_COMMAND, {0, 1, 1}}; // len,speed,recv?
        uint8_t uid[8]; 
        uint8_t *recv=NULL;
        UsbCommand c = {CMD_ISO_15693_COMMAND, {0, 1, 1}}; // len,speed,recv?


@@ -321,20 +342,18 @@ int CmdHF15DumpMem(const char*Cmd) {
        
                SendCommand(&c);
                
        
                SendCommand(&c);
                

-               r=WaitForResponseTimeout(CMD_ACK,1000);
-               
-               if (r!=NULL) {
-                       recv = r->d.asBytes;
-                       if (ISO15_CRC_CHECK==Crc(recv,r->arg[0])) {
+               if (WaitForResponseTimeout(CMD_ACK,&resp,1000)) {
+                       recv = resp.d.asBytes;
+                       if (ISO15_CRC_CHECK==Crc(recv,resp.arg[0])) {

                                if (!(recv[0] & ISO15_RES_ERROR)) {
                                        retry=0;
                                        *output=0; // reset outputstring
                                if (!(recv[0] & ISO15_RES_ERROR)) {
                                        retry=0;
                                        *output=0; // reset outputstring

-                                       sprintf(output, "Block %2i   ",blocknum);
-                                       for ( int i=1; i<r->arg[0]-2; i++) { // data in hex
-                                               sprintf(output+strlen(output),"%02hX ",recv[i]);                                        
+                                       sprintf(output, "Block %02x   ",blocknum);
+                                       for ( int i=1; i<resp.arg[0]-2; i++) { // data in hex
+                                               sprintf(output+strlen(output),"%02X ",recv[i]);

                                        }                                       
                                        strcat(output,"   "); 
                                        }                                       
                                        strcat(output,"   "); 

-                                       for ( int i=1; i<r->arg[0]-2; i++) { // data in cleaned ascii
+                                       for ( int i=1; i<resp.arg[0]-2; i++) { // data in cleaned ascii

                                                sprintf(output+strlen(output),"%c",(recv[i]>31 && recv[i]<127)?recv[i]:'.');                                    
                                        }                                       
                                        PrintAndLog("%s",output);       
                                                sprintf(output+strlen(output),"%c",(recv[i]>31 && recv[i]<127)?recv[i]:'.');                                    
                                        }                                       
                                        PrintAndLog("%s",output);       


@@ -346,14 +365,14 @@ int CmdHF15DumpMem(const char*Cmd) {
                                }
                        } // else PrintAndLog("crc");
                } // else PrintAndLog("r null");
                                }
                        } // else PrintAndLog("crc");
                } // else PrintAndLog("r null");

-               

        } // retry
        } // retry

-       if (r && r->arg[0]<3) 
-               PrintAndLog("Lost Connection");
-       else if (r && ISO15_CRC_CHECK!=Crc(r->d.asBytes,r->arg[0]))
-               PrintAndLog("CRC Failed");
-       else 
-               PrintAndLog("Tag returned Error %i: %s",recv[1],TagErrorStr(recv[1])); 
+  // TODO: need fix
+//     if (resp.arg[0]<3)
+//             PrintAndLog("Lost Connection");
+//     else if (ISO15_CRC_CHECK!=Crc(resp.d.asBytes,resp.arg[0]))
+//             PrintAndLog("CRC Failed");
+//     else 
+//             PrintAndLog("Tag returned Error %i: %s",recv[1],TagErrorStr(recv[1])); 

        return 0;
 }
 
        return 0;
 }
 


@@ -392,7 +411,7 @@ int CmdHF15Help(const char *Cmd)
 
 int CmdHF15CmdInquiry(const char *Cmd) 
 {
 
 int CmdHF15CmdInquiry(const char *Cmd) 
 {

-       UsbCommand *r;  
+       UsbCommand resp;

        uint8_t *recv;
        UsbCommand c = {CMD_ISO_15693_COMMAND, {0, 1, 1}}; // len,speed,recv?
        uint8_t *req=c.d.asBytes;
        uint8_t *recv;
        UsbCommand c = {CMD_ISO_15693_COMMAND, {0, 1, 1}}; // len,speed,recv?
        uint8_t *req=c.d.asBytes;


@@ -407,15 +426,13 @@ int CmdHF15CmdInquiry(const char *Cmd)
 
        SendCommand(&c);
        
 
        SendCommand(&c);
        

-       r=WaitForResponseTimeout(CMD_ACK,1000);
-       
-       if (r!=NULL) {
-               if (r->arg[0]>=12) {
-                  recv = r->d.asBytes;
+       if (WaitForResponseTimeout(CMD_ACK,&resp,1000)) {
+               if (resp.arg[0]>=12) {
+                  recv = resp.d.asBytes;

                   PrintAndLog("UID=%s",sprintUID(NULL,&recv[2]));
                   PrintAndLog("Tag Info: %s",getTagInfo(&recv[2]));    
                } else {
                   PrintAndLog("UID=%s",sprintUID(NULL,&recv[2]));
                   PrintAndLog("Tag Info: %s",getTagInfo(&recv[2]));    
                } else {

-                       PrintAndLog("Response to short, just %i bytes. No tag?\n",r->arg[0]);           
+                       PrintAndLog("Response to short, just %i bytes. No tag?\n",resp.arg[0]);

                }
        } else {
                PrintAndLog("timeout.");
                }
        } else {
                PrintAndLog("timeout.");


@@ -428,8 +445,9 @@ int CmdHF15CmdInquiry(const char *Cmd)
 int CmdHF15CmdDebug( const char *cmd) {
        int debug=atoi(cmd);
        if (strlen(cmd)<1) {
 int CmdHF15CmdDebug( const char *cmd) {
        int debug=atoi(cmd);
        if (strlen(cmd)<1) {

-               PrintAndLog("Usage: hf 15 cmd debug  <0/1>");
-               PrintAndLog("   0..no debugging output  1..turn debugging on"); 
+               PrintAndLog("Usage: hf 15 cmd debug  <0|1>");
+               PrintAndLog("   0 no debugging");
+               PrintAndLog("   1 turn debugging on");  

                return 0;
        }
 
                return 0;
        }
 


@@ -440,7 +458,7 @@ int CmdHF15CmdDebug( const char *cmd) {
 
 
 int CmdHF15CmdRaw (const char *cmd) {
 
 
 int CmdHF15CmdRaw (const char *cmd) {

-       UsbCommand *r;  
+       UsbCommand resp;

        uint8_t *recv;
        UsbCommand c = {CMD_ISO_15693_COMMAND, {0, 1, 1}}; // len,speed,recv?
        int reply=1;
        uint8_t *recv;
        UsbCommand c = {CMD_ISO_15693_COMMAND, {0, 1, 1}}; // len,speed,recv?
        int reply=1;


@@ -515,15 +533,13 @@ int CmdHF15CmdRaw (const char *cmd) {
        SendCommand(&c);
        
        if (reply) {
        SendCommand(&c);
        
        if (reply) {

-               r=WaitForResponseTimeout(CMD_ACK,1000);
-       
-               if (r!=NULL) {
-                       recv = r->d.asBytes;
-                       PrintAndLog("received %i octets",r->arg[0]);
-                       hexout = (char *)malloc(r->arg[0] * 3 + 1);
+               if (WaitForResponseTimeout(CMD_ACK,&resp,1000)) {
+                       recv = resp.d.asBytes;
+                       PrintAndLog("received %i octets",resp.arg[0]);
+                       hexout = (char *)malloc(resp.arg[0] * 3 + 1);

                        if (hexout != NULL) {
                        if (hexout != NULL) {

-                               for (int i = 0; i < r->arg[0]; i++) { // data in hex
-                                       sprintf(&hexout[i * 3], "%02hX ", recv[i]);
+                               for (int i = 0; i < resp.arg[0]; i++) { // data in hex
+                                       sprintf(&hexout[i * 3], "%02X ", recv[i]);

                                }
                                PrintAndLog("%s", hexout);
                                free(hexout);
                                }
                                PrintAndLog("%s", hexout);
                                free(hexout);


@@ -544,7 +560,8 @@ int CmdHF15CmdRaw (const char *cmd) {
  */
 int prepareHF15Cmd(char **cmd, UsbCommand *c, uint8_t iso15cmd[], int iso15cmdlen) {
        int temp;
  */
 int prepareHF15Cmd(char **cmd, UsbCommand *c, uint8_t iso15cmd[], int iso15cmdlen) {
        int temp;

-       uint8_t *req=c->d.asBytes, uid[8];
+       uint8_t *req=c->d.asBytes;
+       uint8_t uid[8] = {0x00};

        uint32_t reqlen=0;
 
        // strip
        uint32_t reqlen=0;
 
        // strip


@@ -635,7 +652,7 @@ int prepareHF15Cmd(char **cmd, UsbCommand *c, uint8_t iso15cmd[], int iso15cmdle
  * get system information from tag/VICC
  */
 int CmdHF15CmdSysinfo(const char *Cmd) {
  * get system information from tag/VICC
  */
 int CmdHF15CmdSysinfo(const char *Cmd) {

-       UsbCommand *r;  
+       UsbCommand resp;

        uint8_t *recv;
        UsbCommand c = {CMD_ISO_15693_COMMAND, {0, 1, 1}}; // len,speed,recv?
        uint8_t *req=c.d.asBytes;
        uint8_t *recv;
        UsbCommand c = {CMD_ISO_15693_COMMAND, {0, 1, 1}}; // len,speed,recv?
        uint8_t *req=c.d.asBytes;


@@ -670,15 +687,13 @@ int CmdHF15CmdSysinfo(const char *Cmd) {
 
        SendCommand(&c);
 
 
        SendCommand(&c);
 

-       r=WaitForResponseTimeout(CMD_ACK,1000);
-       
-       if (r!=NULL && r->arg[0]>2) {
-               recv = r->d.asBytes;
-               if (ISO15_CRC_CHECK==Crc(recv,r->arg[0])) {
+       if (WaitForResponseTimeout(CMD_ACK,&resp,1000) && resp.arg[0]>2) {
+               recv = resp.d.asBytes;
+               if (ISO15_CRC_CHECK==Crc(recv,resp.arg[0])) {

                        if (!(recv[0] & ISO15_RES_ERROR)) {
                                *output=0; // reset outputstring
                        if (!(recv[0] & ISO15_RES_ERROR)) {
                                *output=0; // reset outputstring

-                               for ( i=1; i<r->arg[0]-2; i++) {
-                                       sprintf(output+strlen(output),"%02hX ",recv[i]);                                        
+                               for ( i=1; i<resp.arg[0]-2; i++) {
+                                       sprintf(output+strlen(output),"%02X ",recv[i]);

                                }                                       
                                strcat(output,"\n\r");
                                strcat(output,"UID = ");
                                }                                       
                                strcat(output,"\n\r");
                                strcat(output,"UID = ");


@@ -688,11 +703,11 @@ int CmdHF15CmdSysinfo(const char *Cmd) {
                                strcat(output,"\n\r");
                                i=10;
                                if (recv[1] & 0x01) 
                                strcat(output,"\n\r");
                                i=10;
                                if (recv[1] & 0x01) 

-                                       sprintf(output+strlen(output),"DSFID supported, set to %02hX\n\r",recv[i++]);
+                                       sprintf(output+strlen(output),"DSFID supported, set to %02X\n\r",recv[i++]);

                                else 
                                        strcat(output,"DSFID not supported\n\r");
                                if (recv[1] & 0x02) 
                                else 
                                        strcat(output,"DSFID not supported\n\r");
                                if (recv[1] & 0x02) 

-                                       sprintf(output+strlen(output),"AFI supported, set to %03hX\n\r",recv[i++]);
+                                       sprintf(output+strlen(output),"AFI supported, set to %03X\n\r",recv[i++]);

                                else 
                                        strcat(output,"AFI not supported\n\r");
                                if (recv[1] & 0x04) {
                                else 
                                        strcat(output,"AFI not supported\n\r");
                                if (recv[1] & 0x04) {


@@ -702,7 +717,7 @@ int CmdHF15CmdSysinfo(const char *Cmd) {
                                        i+=2;
                                } else 
                                        strcat(output,"Tag does not provide information on memory layout\n\r");
                                        i+=2;
                                } else 
                                        strcat(output,"Tag does not provide information on memory layout\n\r");

-                               if (recv[1] & 0x08) sprintf(output+strlen(output),"IC reference given: %02hX\n\r",recv[i++]);
+                               if (recv[1] & 0x08) sprintf(output+strlen(output),"IC reference given: %02X\n\r",recv[i++]);

                                        else strcat(output,"IC reference not given\n\r");
 
 
                                        else strcat(output,"IC reference not given\n\r");
 
 


@@ -725,7 +740,7 @@ int CmdHF15CmdSysinfo(const char *Cmd) {
  * Read multiple blocks at once (not all tags support this)
  */
 int CmdHF15CmdReadmulti(const char *Cmd) {
  * Read multiple blocks at once (not all tags support this)
  */
 int CmdHF15CmdReadmulti(const char *Cmd) {

-       UsbCommand *r;  
+       UsbCommand resp;

        uint8_t *recv;
        UsbCommand c = {CMD_ISO_15693_COMMAND, {0, 1, 1}}; // len,speed,recv?
        uint8_t *req=c.d.asBytes;
        uint8_t *recv;
        UsbCommand c = {CMD_ISO_15693_COMMAND, {0, 1, 1}}; // len,speed,recv?
        uint8_t *req=c.d.asBytes;


@@ -773,18 +788,16 @@ int CmdHF15CmdReadmulti(const char *Cmd) {
 
        SendCommand(&c);
 
 
        SendCommand(&c);
 

-       r=WaitForResponseTimeout(CMD_ACK,1000);
-       
-       if (r!=NULL && r->arg[0]>2) {
-               recv = r->d.asBytes;
-               if (ISO15_CRC_CHECK==Crc(recv,r->arg[0])) {
+       if (WaitForResponseTimeout(CMD_ACK,&resp,1000) && resp.arg[0]>2) {
+               recv = resp.d.asBytes;
+               if (ISO15_CRC_CHECK==Crc(recv,resp.arg[0])) {

                        if (!(recv[0] & ISO15_RES_ERROR)) {
                                *output=0; // reset outputstring
                        if (!(recv[0] & ISO15_RES_ERROR)) {
                                *output=0; // reset outputstring

-                               for ( int i=1; i<r->arg[0]-2; i++) {
-                                       sprintf(output+strlen(output),"%02hX ",recv[i]);                                        
+                               for ( int i=1; i<resp.arg[0]-2; i++) {
+                                       sprintf(output+strlen(output),"%02X ",recv[i]);

                                }                                       
                                strcat(output,"   ");
                                }                                       
                                strcat(output,"   ");

-                               for ( int i=1; i<r->arg[0]-2; i++) {
+                               for ( int i=1; i<resp.arg[0]-2; i++) {

                                        sprintf(output+strlen(output),"%c",recv[i]>31 && recv[i]<127?recv[i]:'.');                                      
                                }                                       
                                PrintAndLog("%s",output);       
                                        sprintf(output+strlen(output),"%c",recv[i]>31 && recv[i]<127?recv[i]:'.');                                      
                                }                                       
                                PrintAndLog("%s",output);       


@@ -806,7 +819,7 @@ int CmdHF15CmdReadmulti(const char *Cmd) {
  * Reads a single Block
  */
 int CmdHF15CmdRead(const char *Cmd) {
  * Reads a single Block
  */
 int CmdHF15CmdRead(const char *Cmd) {

-       UsbCommand *r;  
+       UsbCommand resp;

        uint8_t *recv;
        UsbCommand c = {CMD_ISO_15693_COMMAND, {0, 1, 1}}; // len,speed,recv?
        uint8_t *req=c.d.asBytes;
        uint8_t *recv;
        UsbCommand c = {CMD_ISO_15693_COMMAND, {0, 1, 1}}; // len,speed,recv?
        uint8_t *req=c.d.asBytes;


@@ -848,19 +861,17 @@ int CmdHF15CmdRead(const char *Cmd) {
 
        SendCommand(&c);
 
 
        SendCommand(&c);
 

-       r=WaitForResponseTimeout(CMD_ACK,1000);
-       
-       if (r!=NULL && r->arg[0]>2) {
-               recv = r->d.asBytes;
-               if (ISO15_CRC_CHECK==Crc(recv,r->arg[0])) {
+       if (WaitForResponseTimeout(CMD_ACK,&resp,1000) && resp.arg[0]>2) {
+               recv = resp.d.asBytes;
+               if (ISO15_CRC_CHECK==Crc(recv,resp.arg[0])) {

                        if (!(recv[0] & ISO15_RES_ERROR)) {
                                *output=0; // reset outputstring
                                //sprintf(output, "Block %2i   ",blocknum);
                        if (!(recv[0] & ISO15_RES_ERROR)) {
                                *output=0; // reset outputstring
                                //sprintf(output, "Block %2i   ",blocknum);

-                               for ( int i=1; i<r->arg[0]-2; i++) {
-                                       sprintf(output+strlen(output),"%02hX ",recv[i]);                                        
+                               for ( int i=1; i<resp.arg[0]-2; i++) {
+                                       sprintf(output+strlen(output),"%02X ",recv[i]);

                                }                                       
                                strcat(output,"   ");
                                }                                       
                                strcat(output,"   ");

-                               for ( int i=1; i<r->arg[0]-2; i++) {
+                               for ( int i=1; i<resp.arg[0]-2; i++) {

                                        sprintf(output+strlen(output),"%c",recv[i]>31 && recv[i]<127?recv[i]:'.');                                      
                                }                                       
                                PrintAndLog("%s",output);       
                                        sprintf(output+strlen(output),"%c",recv[i]>31 && recv[i]<127?recv[i]:'.');                                      
                                }                                       
                                PrintAndLog("%s",output);       


@@ -883,7 +894,7 @@ int CmdHF15CmdRead(const char *Cmd) {
  * Writes a single Block - might run into timeout, even when successful
  */
 int CmdHF15CmdWrite(const char *Cmd) {
  * Writes a single Block - might run into timeout, even when successful
  */
 int CmdHF15CmdWrite(const char *Cmd) {

-       UsbCommand *r;  
+       UsbCommand resp;

        uint8_t *recv;
        UsbCommand c = {CMD_ISO_15693_COMMAND, {0, 1, 1}}; // len,speed,recv?
        uint8_t *req=c.d.asBytes;
        uint8_t *recv;
        UsbCommand c = {CMD_ISO_15693_COMMAND, {0, 1, 1}}; // len,speed,recv?
        uint8_t *req=c.d.asBytes;


@@ -943,11 +954,9 @@ int CmdHF15CmdWrite(const char *Cmd) {
 
        SendCommand(&c);
 
 
        SendCommand(&c);
 

-       r=WaitForResponseTimeout(CMD_ACK,2000);
-       
-       if (r!=NULL && r->arg[0]>2) {
-               recv = r->d.asBytes;
-               if (ISO15_CRC_CHECK==Crc(recv,r->arg[0])) {
+       if (WaitForResponseTimeout(CMD_ACK,&resp,2000) && resp.arg[0]>2) {
+               recv = resp.d.asBytes;
+               if (ISO15_CRC_CHECK==Crc(recv,resp.arg[0])) {

                        if (!(recv[0] & ISO15_RES_ERROR)) {                                     
                                PrintAndLog("OK");      
                        } else {
                        if (!(recv[0] & ISO15_RES_ERROR)) {                                     
                                PrintAndLog("OK");      
                        } else {