+ // Clean receive command buffer
+
+ if(!GetIso14443aCommandFromReader(receivedCmd, receivedCmdPar, &len)) {
+ DbpString("Button press");
+ break;
+ }
+
+ p_response = NULL;
+
+ // Okay, look at the command now.
+ lastorder = order;
+ if(receivedCmd[0] == 0x26) { // Received a REQUEST
+ p_response = &responses[0]; order = 1;
+ } else if(receivedCmd[0] == 0x52) { // Received a WAKEUP
+ p_response = &responses[0]; order = 6;
+ } else if(receivedCmd[1] == 0x20 && receivedCmd[0] == 0x93) { // Received request for UID (cascade 1)
+ p_response = &responses[1]; order = 2;
+ } else if(receivedCmd[1] == 0x20 && receivedCmd[0] == 0x95) { // Received request for UID (cascade 2)
+ p_response = &responses[2]; order = 20;
+ } else if(receivedCmd[1] == 0x70 && receivedCmd[0] == 0x93) { // Received a SELECT (cascade 1)
+ p_response = &responses[3]; order = 3;
+ } else if(receivedCmd[1] == 0x70 && receivedCmd[0] == 0x95) { // Received a SELECT (cascade 2)
+ p_response = &responses[4]; order = 30;
+ } else if(receivedCmd[0] == 0x30) { // Received a (plain) READ
+ uint8_t block = receivedCmd[1];
+ if ( tagType == 7 ) {
+
+ if ( block < 4 ) {
+ //NTAG 215
+ uint8_t start = 4 * block;
+
+ uint8_t blockdata[50] = {
+ data[0],data[1],data[2], 0x88 ^ data[0] ^ data[1] ^ data[2],
+ data[3],data[4],data[5],data[6],
+ data[3] ^ data[4] ^ data[5] ^ data[6],0x48,0x0f,0xe0,
+ 0xe1,0x10,0x12,0x00,
+ 0x03,0x00,0xfe,0x00,
+ 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
+ 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
+ 0x00,0x00,0x00,0x00,
+ 0x00,0x00};
+ ComputeCrc14443(CRC_14443_A, blockdata+start, 16, blockdata+start+17, blockdata+start+18);
+ EmSendCmdEx( blockdata+start, 18, false);
+ } else {
+ ComputeCrc14443(CRC_14443_A, blockzeros,16, blockzeros+17,blockzeros+18);
+ EmSendCmdEx(blockzeros,18,false);
+ }
+ p_response = NULL;
+
+ } else {
+ EmSendCmdEx(data+(4*block),16,false);
+ // Dbprintf("Read request from reader: %x %x",receivedCmd[0],receivedCmd[1]);
+ // We already responded, do not send anything with the EmSendCmd14443aRaw() that is called below
+ p_response = NULL;
+ }
+ } else if(receivedCmd[0] == 0x3A) { // Received a FAST READ -- just returns all zeros.
+ uint8_t len = (receivedCmd[2]- receivedCmd[1] ) * 4;
+ ComputeCrc14443(CRC_14443_A, blockzeros,len, blockzeros+len+1, blockzeros+len+2);
+ EmSendCmdEx(blockzeros,len+2,false);
+ p_response = NULL;
+ } else if(receivedCmd[0] == 0x3C && tagType == 7) { // Received a READ SIGNATURE --
+ // ECC data, taken from a NTAG215 amiibo token. might work. LEN: 32, + 2 crc
+ uint8_t data[] = {0x56,0x06,0xa6,0x4f,0x43,0x32,0x53,0x6f,
+ 0x43,0xda,0x45,0xd6,0x61,0x38,0xaa,0x1e,
+ 0xcf,0xd3,0x61,0x36,0xca,0x5f,0xbb,0x05,
+ 0xce,0x21,0x24,0x5b,0xa6,0x7a,0x79,0x07,
+ 0x00,0x00};
+ ComputeCrc14443(CRC_14443_A, data, sizeof(data), data+33, data+34);
+ EmSendCmdEx(data,sizeof(data),false);
+ p_response = NULL;
+ } else if(receivedCmd[0] == 0x39 && tagType == 7) { // Received a READ COUNTER --
+ uint8_t data[] = {0x00,0x00,0x00,0x00,0x00};
+ ComputeCrc14443(CRC_14443_A, data, sizeof(data), data+4, data+5);
+ EmSendCmdEx(data,sizeof(data),false);
+ p_response = NULL;
+ } else if(receivedCmd[0] == 0x50) { // Received a HALT
+
+ if (tracing) {
+ LogTrace(receivedCmd, Uart.len, Uart.startTime*16 - DELAY_AIR2ARM_AS_TAG, Uart.endTime*16 - DELAY_AIR2ARM_AS_TAG, Uart.parity, TRUE);
+ }
+ p_response = NULL;
+ } else if(receivedCmd[0] == 0x60 || receivedCmd[0] == 0x61) { // Received an authentication request
+
+ if ( tagType == 7 ) { // IF NTAG /EV1 0x60 == GET_VERSION, not a authentication request.
+ p_response = &responses[7];
+ } else {
+ p_response = &responses[5]; order = 7;
+ }
+ } else if(receivedCmd[0] == 0xE0) { // Received a RATS request
+ if (tagType == 1 || tagType == 2) { // RATS not supported
+ EmSend4bit(CARD_NACK_NA);
+ p_response = NULL;
+ } else {
+ p_response = &responses[6]; order = 70;
+ }
+ } else if (order == 7 && len == 8) { // Received {nr] and {ar} (part of authentication)
+ if (tracing) {
+ LogTrace(receivedCmd, Uart.len, Uart.startTime*16 - DELAY_AIR2ARM_AS_TAG, Uart.endTime*16 - DELAY_AIR2ARM_AS_TAG, Uart.parity, TRUE);
+ }
+ uint32_t nonce = bytes_to_num(response5,4);
+ uint32_t nr = bytes_to_num(receivedCmd,4);
+ uint32_t ar = bytes_to_num(receivedCmd+4,4);
+ //Dbprintf("Auth attempt {nonce}{nr}{ar}: %08x %08x %08x", nonce, nr, ar);