Diff: PN532/examples/mifareclassic_memdump/mifareclassic_memdump.pde

Revision:

0:db8030e71f55

diff -r 000000000000 -r db8030e71f55 PN532/examples/mifareclassic_memdump/mifareclassic_memdump.pde
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/PN532/examples/mifareclassic_memdump/mifareclassic_memdump.pde	Tue Sep 13 06:01:19 2016 +0000
@@ -0,0 +1,157 @@
+/**************************************************************************/
+/*!
+    This example attempts to dump the contents of a Mifare Classic 1K card
+
+    Note that you need the baud rate to be 115200 because we need to print
+    out the data and read from the card at the same time!
+
+    To enable debug message, define DEBUG in PN532/PN532_debug.h
+*/
+/**************************************************************************/
+
+#include <SPI.h>
+#include <PN532_SPI.h>
+#include "PN532.h"
+
+PN532_SPI pn532spi(SPI, 10);
+PN532 nfc(pn532spi);
+
+void setup(void) {
+  // has to be fast to dump the entire memory contents!
+  Serial.begin(115200);
+  Serial.println("Looking for PN532...");
+
+  nfc.begin();
+
+  uint32_t versiondata = nfc.getFirmwareVersion();
+  if (! versiondata) {
+    Serial.print("Didn't find PN53x board");
+    while (1); // halt
+  }
+  // Got ok data, print it out!
+  Serial.print("Found chip PN5"); Serial.println((versiondata>>24) & 0xFF, HEX);
+  Serial.print("Firmware ver. "); Serial.print((versiondata>>16) & 0xFF, DEC);
+  Serial.print('.'); Serial.println((versiondata>>8) & 0xFF, DEC);
+
+  // configure board to read RFID tags
+  nfc.SAMConfig();
+
+  Serial.println("Waiting for an ISO14443A Card ...");
+}
+
+
+void loop(void) {
+  uint8_t success;                          // Flag to check if there was an error with the PN532
+  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)
+  uint8_t currentblock;                     // Counter to keep track of which block we're on
+  bool authenticated = false;               // Flag to indicate if the sector is authenticated
+  uint8_t data[16];                         // Array to store block data during reads
+
+  // Keyb on NDEF and Mifare Classic should be the same
+  uint8_t keyuniversal[6] = { 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF };
+
+  // Wait for an ISO14443A type cards (Mifare, etc.).  When one is found
+  // 'uid' will be populated with the UID, and uidLength will indicate
+  // if the uid is 4 bytes (Mifare Classic) or 7 bytes (Mifare Ultralight)
+  success = nfc.readPassiveTargetID(PN532_MIFARE_ISO14443A, uid, &uidLength);
+
+  if (success) {
+    // Display some basic information about the card
+    Serial.println("Found an ISO14443A card");
+    Serial.print("  UID Length: ");Serial.print(uidLength, DEC);Serial.println(" bytes");
+    Serial.print("  UID Value: ");
+    for (uint8_t i = 0; i < uidLength; i++) {
+      Serial.print(uid[i], HEX);
+      Serial.print(' ');
+    }
+    Serial.println("");
+
+    if (uidLength == 4)
+    {
+      // We probably have a Mifare Classic card ...
+      Serial.println("Seems to be a Mifare Classic card (4 byte UID)");
+
+      // Now we try to go through all 16 sectors (each having 4 blocks)
+      // authenticating each sector, and then dumping the blocks
+      for (currentblock = 0; currentblock < 64; currentblock++)
+      {
+        // Check if this is a new block so that we can reauthenticate
+        if (nfc.mifareclassic_IsFirstBlock(currentblock)) authenticated = false;
+
+        // If the sector hasn't been authenticated, do so first
+        if (!authenticated)
+        {
+          // Starting of a new sector ... try to to authenticate
+          Serial.print("------------------------Sector ");Serial.print(currentblock/4, DEC);Serial.println("-------------------------");
+          if (currentblock == 0)
+          {
+              // This will be 0xFF 0xFF 0xFF 0xFF 0xFF 0xFF for Mifare Classic (non-NDEF!)
+              // or 0xA0 0xA1 0xA2 0xA3 0xA4 0xA5 for NDEF formatted cards using key a,
+              // but keyb should be the same for both (0xFF 0xFF 0xFF 0xFF 0xFF 0xFF)
+              success = nfc.mifareclassic_AuthenticateBlock (uid, uidLength, currentblock, 1, keyuniversal);
+          }
+          else
+          {
+              // This will be 0xFF 0xFF 0xFF 0xFF 0xFF 0xFF for Mifare Classic (non-NDEF!)
+              // or 0xD3 0xF7 0xD3 0xF7 0xD3 0xF7 for NDEF formatted cards using key a,
+              // but keyb should be the same for both (0xFF 0xFF 0xFF 0xFF 0xFF 0xFF)
+              success = nfc.mifareclassic_AuthenticateBlock (uid, uidLength, currentblock, 1, keyuniversal);
+          }
+          if (success)
+          {
+            authenticated = true;
+          }
+          else
+          {
+            Serial.println("Authentication error");
+          }
+        }
+        // If we're still not authenticated just skip the block
+        if (!authenticated)
+        {
+          Serial.print("Block ");Serial.print(currentblock, DEC);Serial.println(" unable to authenticate");
+        }
+        else
+        {
+          // Authenticated ... we should be able to read the block now
+          // Dump the data into the 'data' array
+          success = nfc.mifareclassic_ReadDataBlock(currentblock, data);
+          if (success)
+          {
+            // Read successful
+            Serial.print("Block ");Serial.print(currentblock, DEC);
+            if (currentblock < 10)
+            {
+              Serial.print("  ");
+            }
+            else
+            {
+              Serial.print(" ");
+            }
+            // Dump the raw data
+            nfc.PrintHexChar(data, 16);
+          }
+          else
+          {
+            // Oops ... something happened
+            Serial.print("Block ");Serial.print(currentblock, DEC);
+            Serial.println(" unable to read this block");
+          }
+        }
+      }
+    }
+    else
+    {
+      Serial.println("Ooops ... this doesn't seem to be a Mifare Classic card!");
+    }
+  }
+  // Wait a bit before trying again
+  Serial.println("\n\nSend a character to run the mem dumper again!");
+  Serial.flush();
+  while (!Serial.available());
+  while (Serial.available()) {
+  Serial.read();
+  }
+  Serial.flush();
+}
\ No newline at end of file