PN532 Driver library This library provides an abstract API to drive the pn532 nfc chip, with I2C/HSU/SPI interface. Its based on the Seeed Studio's Arduino version.
Dependents: PN532_ReadUid Nfctest2
Diff: PN532/examples/mifareclassic_memdump/mifareclassic_memdump.pde
- Revision:
- 0:db8030e71f55
--- /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