Diff: main.cpp

Revision:

5:4b238fd5f347

Parent:

4:70acff42d8b4

Child:

6:9109b95c3e97

--- a/main.cpp	Wed Mar 16 20:05:34 2016 +0000
+++ b/main.cpp	Thu Mar 17 09:49:16 2016 +0000
@@ -49,6 +49,7 @@
 Adafruit_PN532 nfc(SCK, MISO, MOSI, SS);
 
 void loop(void);
+int sectorToBlock(int sectorIndex);
 
 int main() {
   pc.printf("Hello!\r\n");  
@@ -82,6 +83,7 @@
   uint8_t success;
   uint8_t uid[] = { 0, 0, 0, 0, 0, 0, 0 };  // Buffer to store the returned UID
   uint8_t uidLength;                        // Length of the UID (4 or 7 bytes depending on ISO14443A card type)
+  int sector = 32;
   
   // Wait for an ISO14443A type cards (Mifare, etc.).  When one is found
   // 'uid' will be populated with the UID, and uidLength will indicate
@@ -103,13 +105,14 @@
       
       // Now we need to try to authenticate it for read/write access
       // Try with the factory default KeyA: 0xFF 0xFF 0xFF 0xFF 0xFF 0xFF
-      pc.printf("Trying to authenticate block 4 with default KEYA value\r\n");
+      pc.printf("Trying to authenticate sector %d with default KEYA value\r\n", sector);
       uint8_t keya[6] = { 0xA0, 0xA1, 0xA2, 0xA3, 0xA4, 0xA5 };
+      int blockNumber = sectorToBlock(sector);
       
       // Start with block 4 (the first block of sector 1) since sector 0
       // contains the manufacturer data and it's probably better just
       // to leave it alone unless you know what you're doing
-      success = nfc.mifareclassic_AuthenticateBlock(uid, uidLength, 128, 0, keya);
+      success = nfc.mifareclassic_AuthenticateBlock(uid, uidLength, blockNumber, 0, keya);
         
       if (success)
       { 
@@ -117,7 +120,7 @@
             int respSize = 16;
             uint8_t data[respSize];
             
-            success = nfc.mifareclassic_ReadDataBlock(128, data);
+            success = nfc.mifareclassic_ReadDataBlock(blockNumber, data);
             
             if (success)
             {
@@ -166,4 +169,12 @@
       }
     }
   }
+}
+  
+int sectorToBlock(int sectorIndex) {
+    if (sectorIndex < 32) {
+        return sectorIndex * 4;
+    } else {
+        return 32 * 4 + (sectorIndex - 32) * 16;
+    }
 }
\ No newline at end of file