#include "crc16.h"
uint8_t DemodBuffer[MAX_DEMOD_BUF_LEN];
-uint8_t g_debugMode;
-size_t DemodBufferLen;
+uint8_t g_debugMode=0;
+size_t DemodBufferLen=0;
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;
setDemodBuf(BitStream,BitLen,0);
if (verbose || g_debugMode){
if (errCnt>0) PrintAndLog("# Errors during Demoding (shown as 7 in bit stream): %d",errCnt);
- if (askType) PrintAndLog("ASK/Manchester decoded bitstream:");
- else PrintAndLog("ASK/Raw decoded bitstream:");
+ if (askType) PrintAndLog("ASK/Manchester - Clock: %d - Decoded bitstream:",clk);
+ else PrintAndLog("ASK/Raw - Clock: %d - Decoded bitstream:",clk);
// Now output the bitstream to the scrollback by line of 16 bits
printDemodBuff();
int errCnt=0;
size_t size=0;
int invert=0;
- size_t maxErr = 20;
+ int maxErr = 20;
char cmdp = param_getchar(Cmd, 0);
if (strlen(Cmd) > 5 || cmdp == 'h' || cmdp == 'H') {
PrintAndLog("Usage: data manrawdecode [invert] [maxErr]");
int ASKbiphaseDemod(const char *Cmd, bool verbose)
{
//ask raw demod GraphBuffer first
- int offset=0, clk=0, invert=0, maxErr=0, ans=0;
- ans = sscanf(Cmd, "%i %i 0 %i", &offset, &clk, &maxErr);
- if (ans>0)
- ans = ASKDemod(Cmd+2, FALSE, FALSE, 0);
- else
- ans = ASKDemod(Cmd, FALSE, FALSE, 0);
- if (!ans) {
- if (g_debugMode || verbose) PrintAndLog("Error AskDemod: %d", ans);
- return 0;
- }
-
- //attempt to Biphase decode DemodBuffer
- size_t size = DemodBufferLen;
+ int offset=0, clk=0, invert=0, maxErr=0;
+ sscanf(Cmd, "%i %i %i %i", &offset, &clk, &invert, &maxErr);
+
uint8_t BitStream[MAX_DEMOD_BUF_LEN];
- memcpy(BitStream, DemodBuffer, DemodBufferLen);
- int errCnt = BiphaseRawDecode(BitStream, &size, offset, invert);
+ size_t size = getFromGraphBuf(BitStream);
+ //invert here inverts the ask raw demoded bits which has no effect on the demod, but we need the pointer
+ int 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: %d", errCnt, clk);
+ return 0;
+ }
+
+ //attempt to Biphase decode BitStream
+ errCnt = BiphaseRawDecode(BitStream, &size, offset, invert);
if (errCnt < 0){
if (g_debugMode || verbose) PrintAndLog("Error BiphaseRawDecode: %d", errCnt);
return 0;
//success set DemodBuffer and return
setDemodBuf(BitStream, size, 0);
if (g_debugMode || verbose){
- PrintAndLog("Biphase Decoded using offset: %d - # errors:%d - data:",offset,errCnt);
+ PrintAndLog("Biphase Decoded using offset: %d - clock: %d - # errors:%d - data:",offset,clk,errCnt);
printDemodBuff();
}
return 1;
// NATIONAL CODE, ICAR database
// COUNTRY CODE (ISO3166) or http://cms.abvma.ca/uploads/ManufacturersISOsandCountryCodes.pdf
// FLAG (animal/non-animal)
+/*
+38 IDbits
+10 country code
+1 extra app bit
+14 reserved bits
+1 animal bit
+16 ccitt CRC chksum over 64bit ID CODE.
+24 appli bits.
+
+-- sample: 985121004515220 [ 37FF65B88EF94 ]
+*/
int CmdFDXBdemodBI(const char *Cmd){
int invert = 1;
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);
+ if (g_debugMode) PrintAndLog("DEBUG: no data or error found %d, clock: %d", errCnt, clk);
return 0;
}
if (g_debugMode) PrintAndLog("Error BiphaseRawDecode: %d", errCnt);
return 0;
}
-
+
int preambleIndex = FDXBdemodBI(BitStream, &size);
if (preambleIndex < 0){
if (g_debugMode) PrintAndLog("Error FDXBDemod , no startmarker found :: %d",preambleIndex);
return 0;
}
-
+
setDemodBuf(BitStream, 128, preambleIndex);
- //printDemodBuff();
+ // remove marker bits (1's every 9th digit after preamble) (pType = 2)
size = removeParity(BitStream, preambleIndex + 11, 9, 2, 117);
- if ( size <= 103 ) {
+ if ( size != 104 ) {
if (g_debugMode) PrintAndLog("Error removeParity:: %d", size);
return 0;
}
if (g_debugMode) {
char *bin = sprint_bin_break(BitStream,size,16);
PrintAndLog("DEBUG BinStream:\n%s",bin);
- PrintAndLog("0x%s", sprint_hex(BitStream,16));
}
PrintAndLog("\nFDX-B / ISO 11784/5 Animal Tag ID Found:");
if (g_debugMode) PrintAndLog("Start marker %d; Size %d", preambleIndex, size);
- //return 1;
//got a good demod
uint64_t NationalCode = ((uint64_t)(bytebits_to_byteLSBF(BitStream+32,6)) << 32) | bytebits_to_byteLSBF(BitStream,32);
uint32_t countryCode = bytebits_to_byteLSBF(BitStream+38,10);
uint32_t crc16 = bytebits_to_byteLSBF(BitStream+64,16);
uint32_t extended = bytebits_to_byteLSBF(BitStream+80,24);
- uint64_t rawid = ((uint64_t)bytebits_to_byteLSBF(BitStream,32)<<32) | bytebits_to_byteLSBF(BitStream+32,32);
+ uint64_t rawid = ((uint64_t)bytebits_to_byte(BitStream,32)<<32) | bytebits_to_byte(BitStream+32,32);
uint8_t raw[8];
num_to_bytes(rawid, 8, raw);
- uint8_t *ID = SwapEndian64(raw, 8, 4);
- if (g_debugMode) PrintAndLog("Raw ID Hex: %s", sprint_hex(ID,8));
+ if (g_debugMode) PrintAndLog("Raw ID Hex: %s", sprint_hex(raw,8));
- uint16_t calcCrc = crc16_ccitt_kermit(ID, 8);
- PrintAndLog("Animal ID: %u-%012llu", countryCode, NationalCode);
+ uint16_t calcCrc = crc16_ccitt_kermit(raw, 8);
+ PrintAndLog("Animal ID: %04u-%012llu", countryCode, NationalCode);
PrintAndLog("National Code: %012llu", NationalCode);
- PrintAndLog("CountryCode: %u", countryCode);
+ PrintAndLog("CountryCode: %04u", countryCode);
PrintAndLog("Extended Data: %s", dataBlockBit ? "True" : "False");
PrintAndLog("reserved Code: %u", reservedCode);
PrintAndLog("Animal Tag: %s", animalBit ? "True" : "False");
clk=0;
}
if (invert != 0 && invert != 1) {
- if (verbose) PrintAndLog("Invalid argument: %s", Cmd);
+ if (g_debugMode || verbose) PrintAndLog("Invalid argument: %s", Cmd);
return 0;
}
uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0};
size_t BitLen = getFromGraphBuf(BitStream);
- if (BitLen==0) return -1;
+ if (BitLen==0) return 0;
uint8_t carrier=countFC(BitStream, BitLen, 0);
if (carrier!=2 && carrier!=4 && carrier!=8){
//invalid carrier
uint8_t * buffer;
uint32_t numbits;
uint32_t position;
-}BitstreamOut;
+} BitstreamOut;
bool _headBit( BitstreamOut *stream)
{
projects / proxmark3-svn / blobdiff