uint8_t DemodBuffer[MAX_DEMOD_BUF_LEN];
uint8_t g_debugMode;
-int DemodBufferLen;
+size_t DemodBufferLen;
static int CmdHelp(const char *Cmd);
//set the demod buffer with given array of binary (one bit per byte)
size = MAX_DEMOD_BUF_LEN;
size_t i = 0;
- for (; i < size; i++){
+for (; i < size; i++){
DemodBuffer[i]=buff[startIdx++];
}
DemodBufferLen=size;
return 1;
}
+int usage_data_printdemodbuf(){
+ PrintAndLog("Usage: data printdemodbuffer x o <offset>");
+ PrintAndLog("Options: ");
+ PrintAndLog(" h This help");
+ PrintAndLog(" x output in hex (omit for binary output)");
+ PrintAndLog(" o <offset> enter offset in # of bits");
+ return 0;
+}
+
//by marshmellow
void printDemodBuff(void)
{
int CmdPrintDemodBuff(const char *Cmd)
{
- char hex;
- char printBuff[512]={0x00};
- uint8_t numBits = DemodBufferLen & 0xFFFC;
- sscanf(Cmd, "%c", &hex);
- if (hex == 'h'){
- PrintAndLog("Usage: data printdemodbuffer [x]");
- PrintAndLog("Options: ");
- PrintAndLog(" h This help");
- PrintAndLog(" x output in hex (omit for binary output)");
- return 0;
+ char hex[512]={0x00};
+ bool hexMode = false;
+ bool errors = false;
+ uint8_t offset = 0;
+ char cmdp = 0;
+ while(param_getchar(Cmd, cmdp) != 0x00)
+ {
+ switch(param_getchar(Cmd, cmdp))
+ {
+ case 'h':
+ case 'H':
+ return usage_data_printdemodbuf();
+ case 'x':
+ case 'X':
+ hexMode = true;
+ cmdp++;
+ break;
+ case 'o':
+ case 'O':
+ offset = param_get8(Cmd, cmdp+1);
+ if (!offset) errors = true;
+ cmdp += 2;
+ break;
+ default:
+ PrintAndLog("Unknown parameter '%c'", param_getchar(Cmd, cmdp));
+ errors = true;
+ break;
+ }
+ if(errors) break;
}
- if (hex == 'x'){
- numBits = binarraytohex(printBuff, (char *)DemodBuffer, numBits);
+ //Validations
+ if(errors) return usage_data_printdemodbuf();
+
+ int numBits = (DemodBufferLen-offset) & 0x7FC; //make sure we don't exceed our string
+
+ if (hexMode){
+ char *buf = (char *) (DemodBuffer + offset);
+ numBits = binarraytohex(hex, buf, numBits);
if (numBits==0) return 0;
- PrintAndLog("DemodBuffer: %s",printBuff);
+ PrintAndLog("DemodBuffer: %s",hex);
} else {
- printDemodBuff();
+ //setDemodBuf(DemodBuffer, DemodBufferLen-offset, offset);
+ char *bin = sprint_bin_break(DemodBuffer+offset,numBits,16);
+ PrintAndLog("DemodBuffer:\n%s",bin);
}
return 1;
}
int offset=0, clk=0, invert=0, maxErr=0, ans=0;
ans = sscanf(Cmd, "%i %i %i %i", &offset, &clk, &invert, &maxErr);
if (ans>0)
- ans = ASKDemod(Cmd+1, FALSE, FALSE, 0);
+ ans = ASKDemod(Cmd+2, FALSE, FALSE, 0);
else
ans = ASKDemod(Cmd, FALSE, FALSE, 0);
if (!ans) {
return 1;
}
+// ISO11784/85 demod (aka animal tag) BIPHASE, inverted, rf/32, with preamble of 00000000001 (128bits)
+// 8 databits + 1 parity (1)
+// CIITT 16 chksum
+// NATIONAL CODE, ICAR database
+// COUNTRY CODE (ISO3166)
+// FLAG (animal/non-animal)
+int CmdIso11784demodBI(const char *Cmd){
+
+ int invert = 1;
+ int clk = 32;
+ int errCnt = 0;
+ int maxErr = 0;
+ uint8_t BitStream[MAX_DEMOD_BUF_LEN];
+ size_t size = getFromGraphBuf(BitStream);
+
+ errCnt = askdemod(BitStream, &size, &clk, &invert, maxErr, 0, 0);
+ if ( errCnt < 0 || errCnt > maxErr ) {
+ if (g_debugMode) PrintAndLog("DEBUG: no data or error found %d, clock: 32", errCnt);
+ return 0;
+ }
+
+ errCnt = BiphaseRawDecode(BitStream, &size, maxErr, 1);
+ if (errCnt < 0 || errCnt > maxErr ) {
+ if (g_debugMode) PrintAndLog("Error BiphaseRawDecode: %d", errCnt);
+ return 0;
+ }
+
+ int preambleIndex = ISO11784demodBI(BitStream, &size);
+ if (preambleIndex < 0){
+ if (g_debugMode) PrintAndLog("Error ISO11784Demod , no startmarker found :: %d",preambleIndex);
+ return 0;
+ }
+
+ setDemodBuf(BitStream, 128, preambleIndex);
+ //printDemodBuff();
+
+ size = removeParity(BitStream, preambleIndex + 11, 9, 2, 117);
+ if ( size <= 103 ) {
+ if (g_debugMode) PrintAndLog("Error removeParity:: %d", size);
+ return 0;
+ }
+ //char *bin = sprint_bin_break(BitStream,size,16);
+ //PrintAndLog("DEBUG BinStream:\n%s",bin);
+
+ PrintAndLog("startmarker %d; Size %d", preambleIndex, size);
+
+ //return 1;
+ //got a good demod
+ uint32_t NationalCodeA = bytebits_to_byteLSBF(BitStream,32);
+ uint32_t NationalCodeB = bytebits_to_byteLSBF(BitStream+32,6);
+ uint32_t countryCode = bytebits_to_byteLSBF(BitStream+38,10);
+ uint8_t dataBlockBit = BitStream[48];
+ uint32_t reservedCode = bytebits_to_byteLSBF(BitStream+49,14);
+ uint8_t animalBit = BitStream[63];
+ uint32_t crc16 = bytebits_to_byteLSBF(BitStream+64,16);
+ uint32_t extended = bytebits_to_byteLSBF(BitStream+80,24);
+
+ PrintAndLog("NationalCode: %X%08X",NationalCodeB,NationalCodeA);
+ PrintAndLog("CountryCode: %d",countryCode);
+ PrintAndLog("dataBlockBit: %d",dataBlockBit);
+ PrintAndLog("reservedCode: %X",reservedCode);
+ PrintAndLog("animalBit: %d", animalBit);
+ PrintAndLog("CRC: %02X", crc16);
+ PrintAndLog("Extended: %x", extended);
+
+ return 1;
+}
+
+
//by marshmellow
//attempt to psk1 demod graph buffer
int PSKDemod(const char *Cmd, bool verbose)
return 0;
}
uint8_t invert=0;
- ans = indala26decode(DemodBuffer,(size_t *) &DemodBufferLen, &invert);
+ ans = indala26decode(DemodBuffer, &DemodBufferLen, &invert);
if (ans < 1) {
if (g_debugMode==1)
PrintAndLog("Error2: %d",ans);
PrintAndLog("Unpacking...");
BitstreamOut bout = { got, bits_per_sample * n, 0};
int j =0;
- for (j = 0; j * bits_per_sample < n * 8 && j < sizeof(GraphBuffer); j++) {
+ for (j = 0; j * bits_per_sample < n * 8 && j < n; j++) {
uint8_t sample = getByte(bits_per_sample, &bout);
GraphBuffer[j] = ((int) sample )- 128;
}
{"hexsamples", CmdHexsamples, 0, "<bytes> [<offset>] -- Dump big buffer as hex bytes"},
{"hide", CmdHide, 1, "Hide graph window"},
{"hpf", CmdHpf, 1, "Remove DC offset from trace"},
+ {"iso11784demod", CmdIso11784demodBI, 1, "Demodulate a ISO11784/85 Biphase tag from GraphBuffer"},
{"load", CmdLoad, 1, "<filename> -- Load trace (to graph window"},
{"ltrim", CmdLtrim, 1, "<samples> -- Trim samples from left of trace"},
{"rtrim", CmdRtrim, 1, "<location to end trace> -- Trim samples from right of trace"},
{"manrawdecode", Cmdmandecoderaw, 1, "[invert] [maxErr] -- Manchester decode binary stream in DemodBuffer"},
{"norm", CmdNorm, 1, "Normalize max/min to +/-128"},
{"plot", CmdPlot, 1, "Show graph window (hit 'h' in window for keystroke help)"},
- {"printdemodbuffer",CmdPrintDemodBuff, 1, "[x] -- print the data in the DemodBuffer - 'x' for hex output"},
+ {"printdemodbuffer",CmdPrintDemodBuff, 1, "[x] [o] <offset> -- print the data in the DemodBuffer - 'x' for hex output"},
{"pskindalademod", CmdIndalaDecode, 1, "[clock] [invert<0|1>] -- Demodulate an indala tag (PSK1) from GraphBuffer (args optional)"},
{"psknexwatchdemod",CmdPSKNexWatch, 1, "Demodulate a NexWatch tag (nexkey, quadrakey) (PSK1) from GraphBuffer"},
{"rawdemod", CmdRawDemod, 1, "[modulation] ... <options> -see help (h option) -- Demodulate the data in the GraphBuffer and output binary"},
projects / proxmark3-svn / blobdiff