byte PN532::mifare_AuthenticateBlock(word blkn, const byte * keyData) {
// uint8_t len;
byte tmp[16];
#ifdef MIFAREDEBUG
Serial.println("In: mifare_AuthenticateBlock");
#endif
// Prepare the authentication command //
memcpy(tmp, keyData + 1, 6);
// memcpy(tmp + 6, uid, max(4, uidLen));
memcpy(tmp + 6, target.UID, max(4, target.IDLength));
byte authcmd;
// byte rescount;
switch (keyData[0]) {
case 0:
case 0xaa:
case 0x0a:
case 'A':
case 'a':
authcmd = MIFARE_CMD_AUTH_A;
break;
case 1:
case 0x0b:
case 0xbb:
case 'B':
case 'b':
default:
authcmd = MIFARE_CMD_AUTH_B;
break;
}
return InDataExchange(1, authcmd, blkn, tmp, target.IDLength + 6);
}
byte PN532::mifare_WriteBlock(uint8_t blockNumber, uint8_t * data) {
Serial.print("Try to write a block ");
Serial.println(blockNumber);
if (!InDataExchange(1, MIFARE_CMD_WRITE, blockNumber, data, 16)) {
Serial.println("Failed to receive ACK for write command");
}
byte c = getCommandResponse(packet);
if (! c) {
Serial.println("Unexpected response");
Serial.printBytes(packet, 26);
Serial.println();
return 0;
}
Serial.print("Packet ");
Serial.printBytes(packet, c);
Serial.println();
if (packet[0] != 0) {
// error.
return 0;
}
memcpy(data, packet + 1, 16);
Serial.print("data ");
Serial.println(blockNumber);
Serial.printBytes(data, 16);
Serial.println();
return 16;
}
byte PN532::mifare_ReadDataBlock(uint8_t blockNumber, uint8_t * data) {
#ifdef MIFAREDEBUG
Serial.print("Try to read 16 bytes from block ");
Serial.println(blockNumber);
#endif
// Access the Target 1 after polling by InList or AutoPoll
// Authentication must be succeeded so the uid (and its length) is
// stored in target.UID
/* Send the command */
if (!InDataExchange(1, MIFARE_CMD_READ, blockNumber, packet, 0)) {
#ifdef MIFAREDEBUG
Serial.println("Failed to receive ACK for read command");
#endif
}
byte c = getCommandResponse(packet);
if (!c ) {
#ifdef MIFAREDEBUG
Serial.println("Unexpected response");
printHexString(packet, 26);
Serial.println();
#endif
return 0;
}
//#define MIFAREDEBUG
#ifdef MIFAREDEBUG
Serial.print("Packet ");
printHexString(packet, c);
Serial.println();
#endif
if (packet[0] != 0) {
// error.
return 0;
}
memcpy(data, packet + 1, 16);
#ifdef MIFAREDEBUG
Serial.print("data ");
Serial.println(blockNumber);
printHexString(data, 16);
Serial.println();
#endif
//#undef MIFAREDEBUG
return 16;
}