+//-----------------------------------------------------------------------------
+// Authored by Iceman
+//
+// This code is licensed to you under the terms of the GNU GPL, version 2 or,
+// at your option, any later version. See the LICENSE.txt file for the text of
+// the license.
+//-----------------------------------------------------------------------------
+// Low frequency COTAG commands
+//-----------------------------------------------------------------------------
+#include "cmdlfcotag.h" // COTAG function declarations
+
+static int CmdHelp(const char *Cmd);
+
+int usage_lf_cotag_read(void){
+ PrintAndLog("Usage: lf COTAG read [h] <signaldata>");
+ PrintAndLog("Options:");
+ PrintAndLog(" h : This help");
+ PrintAndLog(" <0|1|2> : 0 - HIGH/LOW signal; maxlength bigbuff");
+ PrintAndLog(" : 1 - translation of HI/LO into bytes with manchester 0,1");
+ PrintAndLog(" : 2 - raw signal; maxlength bigbuff");
+ PrintAndLog("");
+ PrintAndLog("Sample:");
+ PrintAndLog(" lf cotag read 0");
+ PrintAndLog(" lf cotag read 1");
+ return 0;
+}
+
+// COTAG demod should be able to use GraphBuffer,
+// when data load samples
+int CmdCOTAGDemod(const char *Cmd) {
+
+ uint8_t bits[COTAG_BITS] = {0};
+ size_t bitlen = COTAG_BITS;
+ memcpy(bits, DemodBuffer, COTAG_BITS);
+
+ int err = manrawdecode(bits, &bitlen, 1);
+ if (err){
+ if (g_debugMode) PrintAndLog("DEBUG: Error - COTAG too many errors: %d", err);
+ return -1;
+ }
+
+ setDemodBuf(bits, bitlen, 0);
+
+ //got a good demod
+ uint16_t cn = bytebits_to_byteLSBF(bits+1, 16);
+ uint32_t fc = bytebits_to_byteLSBF(bits+1+16, 8);
+
+ uint32_t raw1 = bytebits_to_byteLSBF(bits, 32);
+ uint32_t raw2 = bytebits_to_byteLSBF(bits+32, 32);
+ uint32_t raw3 = bytebits_to_byteLSBF(bits+64, 32);
+ uint32_t raw4 = bytebits_to_byteLSBF(bits+96, 32);
+
+ /*
+ fc 161: 1010 0001 -> LSB 1000 0101
+ cn 33593 1000 0011 0011 1001 -> LSB 1001 1100 1100 0001
+ cccc cccc cccc cccc ffffffff
+ 0 1001 1100 1100 0001 1000 0101 0000 0000 100001010000000001111011100000011010000010000000000000000000000000000000000000000000000000000000100111001100000110000101000
+ 1001 1100 1100 0001 10000101
+ */
+ PrintAndLog("COTAG Found: FC %u, CN: %u Raw: %08X%08X%08X%08X", fc, cn, raw1 ,raw2, raw3, raw4);
+ return 1;
+}
+
+// When reading a COTAG.
+// 0 = HIGH/LOW signal - maxlength bigbuff
+// 1 = translation for HI/LO into bytes with manchester 0,1 - length 300
+// 2 = raw signal - maxlength bigbuff
+int CmdCOTAGRead(const char *Cmd) {
+
+ if (Cmd[0] == 'h' || Cmd[0] == 'H') return usage_lf_cotag_read();
+
+ uint32_t rawsignal = 1;
+ sscanf(Cmd, "%u", &rawsignal);
+
+ UsbCommand c = {CMD_COTAG, {rawsignal, 0, 0}};
+ clearCommandBuffer();
+ SendCommand(&c);
+ if ( !WaitForResponseTimeout(CMD_ACK, NULL, 7000) ) {
+ PrintAndLog("command execution time out");
+ return -1;
+ }
+
+ switch ( rawsignal ){
+ case 0:
+ case 2: {
+ CmdPlot("");
+ CmdGrid("384");
+ getSamples("", true); break;
+ }
+ case 1: {
+ GetFromBigBuf(DemodBuffer, COTAG_BITS, 0);
+ DemodBufferLen = COTAG_BITS;
+ UsbCommand response;
+ if ( !WaitForResponseTimeout(CMD_ACK, &response, 1000) ) {
+ PrintAndLog("timeout while waiting for reply.");
+ return -1;
+ }
+ return CmdCOTAGDemod("");
+ }
+ }
+ return 0;
+}
+
+static command_t CommandTable[] = {
+ {"help", CmdHelp, 1, "This help"},
+ {"demod", CmdCOTAGDemod, 1, "Tries to decode a COTAG signal"},
+ {"read", CmdCOTAGRead, 0, "Attempt to read and extract tag data"},
+ {NULL, NULL, 0, NULL}
+};
+
+int CmdLFCOTAG(const char *Cmd) {
+ clearCommandBuffer();
+ CmdsParse(CommandTable, Cmd);
+ return 0;
+}
+
+int CmdHelp(const char *Cmd) {
+ CmdsHelp(CommandTable);
+ return 0;
+}
projects / proxmark3-svn / commitdiff