retrieve uid correctly, patched by 'gregy'

diff --git a/armsrc/iso14443a.c b/armsrc/iso14443a.c
index a726fdc9a68eab08977e01b93a370910c735c8e3..d174a31e20acf85c3032c12a2916c5c73ef38422 100644 (file)
--- a/armsrc/iso14443a.c
+++ b/armsrc/iso14443a.c
@@ -1599,26 +1599,26 @@ int ReaderReceivePar(uint8_t* receivedAnswer, uint32_t * parptr)
  * fills the uid pointer unless NULL
  * fills resp_data unless NULL */
 int iso14443a_select_card(byte_t* uid_ptr, iso14a_card_select_t* p_hi14a_card, uint32_t* cuid_ptr) {
-       uint8_t wupa[]       = { 0x52 };  // 0x26 - REQA  0x52 - WAKE-UP
-       uint8_t sel_all[]    = { 0x93,0x20 };
-       uint8_t sel_uid[]    = { 0x93,0x70,0x00,0x00,0x00,0x00,0x00,0x00,0x00 };
-       uint8_t rats[]       = { 0xE0,0x80,0x00,0x00 }; // FSD=256, FSDI=8, CID=0
-       uint8_t* resp = (((uint8_t *)BigBuf) + FREE_BUFFER_OFFSET);     // was 3560 - tied to other size changes
+  uint8_t wupa[]       = { 0x52 };  // 0x26 - REQA  0x52 - WAKE-UP
+  uint8_t sel_all[]    = { 0x93,0x20 };
+  uint8_t sel_uid[]    = { 0x93,0x70,0x00,0x00,0x00,0x00,0x00,0x00,0x00 };
+  uint8_t rats[]       = { 0xE0,0x80,0x00,0x00 }; // FSD=256, FSDI=8, CID=0
+  uint8_t* resp = (((uint8_t *)BigBuf) + FREE_BUFFER_OFFSET);  // was 3560 - tied to other size changes
   byte_t uid_resp[4];
   size_t uid_resp_len;
 
-       uint8_t sak = 0x04; // cascade uid
-       int cascade_level = 0;
-       int len;
+  uint8_t sak = 0x04; // cascade uid
+  int cascade_level = 0;
+  int len;
         
-       // Broadcast for a card, WUPA (0x52) will force response from all cards in the field
+  // Broadcast for a card, WUPA (0x52) will force response from all cards in the field
   ReaderTransmitBitsPar(wupa,7,0);
-       // Receive the ATQA
-       if(!ReaderReceive(resp)) return 0;
+  // Receive the ATQA
+  if(!ReaderReceive(resp)) return 0;
 //  Dbprintf("atqa: %02x %02x",resp[0],resp[1]);
   
-       if(p_hi14a_card) {
-               memcpy(p_hi14a_card->atqa, resp, 2);
+  if(p_hi14a_card) {
+    memcpy(p_hi14a_card->atqa, resp, 2);
     p_hi14a_card->uidlen = 0;
     memset(p_hi14a_card->uid,0,10);
   }
@@ -1628,19 +1628,18 @@ int iso14443a_select_card(byte_t* uid_ptr, iso14a_card_select_t* p_hi14a_card, u
     memset(uid_ptr,0,10);
   }
 
-       // OK we will select at least at cascade 1, lets see if first byte of UID was 0x88 in
-       // which case we need to make a cascade 2 request and select - this is a long UID
-       // While the UID is not complete, the 3nd bit (from the right) is set in the SAK.
-       for(; sak & 0x04; cascade_level++)
-       {
-               // SELECT_* (L1: 0x93, L2: 0x95, L3: 0x97)
-               sel_uid[0] = sel_all[0] = 0x93 + cascade_level * 2;
+  // OK we will select at least at cascade 1, lets see if first byte of UID was 0x88 in
+  // which case we need to make a cascade 2 request and select - this is a long UID
+  // While the UID is not complete, the 3nd bit (from the right) is set in the SAK.
+  for(; sak & 0x04; cascade_level++) {
+    // SELECT_* (L1: 0x93, L2: 0x95, L3: 0x97)
+    sel_uid[0] = sel_all[0] = 0x93 + cascade_level * 2;
 
-               // SELECT_ALL
-               ReaderTransmit(sel_all,sizeof(sel_all));
-               if (!ReaderReceive(resp)) return 0;
+    // SELECT_ALL
+    ReaderTransmit(sel_all,sizeof(sel_all));
+    if (!ReaderReceive(resp)) return 0;
     
-    // First backup the current uid 
+    // First backup the current uid
     memcpy(uid_resp,resp,4);
     uid_resp_len = 4;
     //    Dbprintf("uid: %02x %02x %02x %02x",uid_resp[0],uid_resp[1],uid_resp[2],uid_resp[3]);
@@ -1650,20 +1649,20 @@ int iso14443a_select_card(byte_t* uid_ptr, iso14a_card_select_t* p_hi14a_card, u
       *cuid_ptr = bytes_to_num(uid_resp, 4);
     }
 
-               // Construct SELECT UID command
+    // Construct SELECT UID command
                memcpy(sel_uid+2,resp,5);
-               AppendCrc14443a(sel_uid,7);
-               ReaderTransmit(sel_uid,sizeof(sel_uid));
+    AppendCrc14443a(sel_uid,7);
+    ReaderTransmit(sel_uid,sizeof(sel_uid));
 
-               // Receive the SAK
-               if (!ReaderReceive(resp)) return 0;
-               sak = resp[0];
+    // Receive the SAK
+    if (!ReaderReceive(resp)) return 0;
+    sak = resp[0];
 
     // Test if more parts of the uid are comming
     if ((sak & 0x04) && uid_resp[0] == 0x88) {
       // Remove first byte, 0x88 is not an UID byte, it CT, see page 3 of:
       // http://www.nxp.com/documents/application_note/AN10927.pdf
-      memcpy(uid_ptr, uid_ptr + 1, 3);
+      memcpy(uid_resp, uid_resp + 1, 3);
       uid_resp_len = 3;
     }
     
@@ -1675,31 +1674,31 @@ int iso14443a_select_card(byte_t* uid_ptr, iso14a_card_select_t* p_hi14a_card, u
       memcpy(p_hi14a_card->uid + (cascade_level*3), uid_resp, uid_resp_len);
       p_hi14a_card->uidlen += uid_resp_len;
     }
-       }
+  }
 
-       if(p_hi14a_card) {
-               p_hi14a_card->sak = sak;
-               p_hi14a_card->ats_len = 0;
-       }
+  if(p_hi14a_card) {
+    p_hi14a_card->sak = sak;
+    p_hi14a_card->ats_len = 0;
+  }
 
-       if( (sak & 0x20) == 0) {
-               return 2; // non iso14443a compliant tag
+  if( (sak & 0x20) == 0) {
+    return 2; // non iso14443a compliant tag
   }
 
-       // Request for answer to select
+  // Request for answer to select
   AppendCrc14443a(rats, 2);
   ReaderTransmit(rats, sizeof(rats));
   
   if (!(len = ReaderReceive(resp))) return 0;
 
   if(p_hi14a_card) {
-               memcpy(p_hi14a_card->ats, resp, sizeof(p_hi14a_card->ats));
-               p_hi14a_card->ats_len = len;
-       }
+    memcpy(p_hi14a_card->ats, resp, sizeof(p_hi14a_card->ats));
+    p_hi14a_card->ats_len = len;
+  }
        
-       // reset the PCB block number
-       iso14_pcb_blocknum = 0;
-       return 1;
+  // reset the PCB block number
+  iso14_pcb_blocknum = 0;
+  return 1;
 }
 
 void iso14443a_setup() {