+int MfSniffInit(void){\r
+ rsamples = 0;\r
+ memset(sniffUID, 0x00, 8);\r
+ memset(sniffATQA, 0x00, 2);\r
+ sniffSAK = 0;\r
+ sniffUIDType = SNF_UID_4;\r
+\r
+ return 0;\r
+}\r
+\r
+int MfSniffEnd(void){\r
+ UsbCommand ack = {CMD_ACK, {0, 0, 0}};\r
+\r
+ LED_B_ON();\r
+ UsbSendPacket((uint8_t *)&ack, sizeof(UsbCommand));\r
+ LED_B_OFF();\r
+\r
+ return 0;\r
+}\r
+\r
+int RAMFUNC MfSniffLogic(const uint8_t * data, int len, int bitCnt, int reader) {\r
+\r
+ if ((len == 1) && (bitCnt = 9)) { \r
+ sniffState = SNF_INIT;\r
+ }\r
+\r
+ switch (sniffState) {\r
+ case SNF_INIT:{\r
+ if ((reader) && (len == 1) && (bitCnt == 9) && ((data[0] == 0x26) || (data[0] == 0x52))) { \r
+ sniffUIDType = SNF_UID_4;\r
+ memset(sniffUID, 0x00, 8);\r
+ memset(sniffATQA, 0x00, 2);\r
+ sniffSAK = 0;\r
+\r
+ sniffState = SNF_WUPREQ;\r
+ }\r
+ break;\r
+ }\r
+ case SNF_WUPREQ:{\r
+ if ((!reader) && (len == 2)) { \r
+ memcpy(sniffATQA, data, 2);\r
+\r
+ sniffState = SNF_ATQA;\r
+ }\r
+ break;\r
+ }\r
+ case SNF_ATQA:{\r
+ if ((reader) && (len == 2) && (data[0] == 0x93) && (data[1] == 0x20)) { \r
+ sniffState = SNF_ANTICOL1;\r
+ }\r
+ break;\r
+ }\r
+ case SNF_ANTICOL1:{\r
+ if ((!reader) && (len == 5) && ((data[0] ^ data[1] ^ data[2] ^ data[3]) == data[4])) { \r
+ memcpy(sniffUID + 3, data, 4);\r
+ \r
+ sniffState = SNF_UID1;\r
+ }\r
+ break;\r
+ }\r
+ case SNF_UID1:{\r
+ if ((reader) && (len == 9) && (data[0] == 0x93) && (data[1] == 0x70) && (CheckCrc14443(CRC_14443_A, data, 9))) { \r
+ sniffState = SNF_SAK;\r
+ }\r
+ break;\r
+ }\r
+ case SNF_SAK:{\r
+ if ((!reader) && (len == 3) && (CheckCrc14443(CRC_14443_A, data, 3))) { \r
+ sniffSAK = data[0];\r
+ if (sniffUID[3] == 0x88) {\r
+ sniffState = SNF_ANTICOL2;\r
+ } else {\r
+ sniffState = SNF_CARD_IDLE;\r
+ }\r
+ }\r
+ break;\r
+ }\r
+ case SNF_ANTICOL2:{\r
+ if ((!reader) && (len == 5) && ((data[0] ^ data[1] ^ data[2] ^ data[3]) == data[4])) { \r
+ memcpy(sniffUID, data, 4);\r
+ sniffUIDType = SNF_UID_7;\r
+ \r
+ sniffState = SNF_UID2;\r
+ }\r
+ break;\r
+ }\r
+ case SNF_UID2:{\r
+ if ((reader) && (len == 9) && (data[0] == 0x95) && (data[1] == 0x70) && (CheckCrc14443(CRC_14443_A, data, 9))) { \r
+ sniffState = SNF_SAK;\r
+ Dbprintf("SNF_SAK"); \r
+ }\r
+ break;\r
+ }\r
+ case SNF_CARD_IDLE:{\r
+ sniffBuf[0] = 0xFF;\r
+ sniffBuf[1] = 0xFF;\r
+ memcpy(sniffBuf + 2, sniffUID, 7);\r
+ memcpy(sniffBuf + 9, sniffATQA, 2);\r
+ sniffBuf[11] = sniffSAK;\r
+ sniffBuf[12] = 0xFF;\r
+ sniffBuf[13] = 0xFF;\r
+ LogTrace(sniffBuf, 14, 0, 0, true);\r
+ timerData = GetTickCount();\r
+ }\r
+ case SNF_CARD_CMD:{\r
+ LogTrace(data, len, 0, 0, true);\r
+\r
+ sniffState = SNF_CARD_RESP;\r
+ timerData = GetTickCount();\r
+ break;\r
+ }\r
+ case SNF_CARD_RESP:{\r
+ LogTrace(data, len, 0, 0, false);\r
+\r
+ sniffState = SNF_CARD_CMD;\r
+ timerData = GetTickCount();\r
+ break;\r
+ }\r
+ \r
+ default:\r
+ sniffState = SNF_INIT;\r
+ break;\r
+ }\r
+\r
+ return 0;\r
+}\r
+\r
+int RAMFUNC MfSniffSend(int maxTimeoutMs) {\r
+ if (traceLen && (timerData + maxTimeoutMs < GetTickCount())) {\r
+ return intMfSniffSend();\r
+ }\r
+ return 0;\r
+}\r
+\r
+// internal seding function. not a RAMFUNC.\r
+int intMfSniffSend() {\r
+ \r
+ int pckSize = 0;\r
+ int pckLen = traceLen;\r
+ int pckNum = 0;\r
+ \r
+ if (!traceLen) return 0;\r
+\r
+ AT91C_BASE_PDC_SSC->PDC_PTCR = AT91C_PDC_RXTDIS;\r
+\r
+ while (pckLen > 0) {\r
+ pckSize = min(32, pckLen);\r
+ UsbCommand ack = {CMD_ACK, {1, pckSize, pckNum}};\r
+ memcpy(ack.d.asBytes, trace + traceLen - pckLen, pckSize);\r
+ \r
+ LED_B_ON();\r
+ UsbSendPacket((uint8_t *)&ack, sizeof(UsbCommand));\r
+ SpinDelay(20);\r
+ LED_B_OFF();\r
+\r
+ pckLen -= pckSize;\r
+ pckNum++;\r
+ }\r
+\r
+ UsbCommand ack = {CMD_ACK, {2, 0, 0}};\r
+\r
+ LED_B_ON();\r
+ UsbSendPacket((uint8_t *)&ack, sizeof(UsbCommand));\r
+ LED_B_OFF();\r
+\r
+ traceLen = 0;\r
+ memset(trace, 0x44, TRACE_SIZE);\r
+ \r
+ return 1;\r
+}\r