//by marshmellow
void setDemodBuf(uint8_t *buff, size_t size, size_t startIdx)
{
+ if (buff == NULL)
+ return;
+
+ if ( size >= MAX_DEMOD_BUF_LEN)
+ size = MAX_DEMOD_BUF_LEN;
+
size_t i = 0;
for (; i < size; i++){
DemodBuffer[i]=buff[startIdx++];
int CmdPrintDemodBuff(const char *Cmd)
{
- printDemodBuff();
+ char hex;
+ char printBuff[512]={0x00};
+ uint8_t numBits = DemodBufferLen & 0xFFF0;
+ 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;
+ }
+ if (hex == 'x'){
+ numBits = binarraytohex(printBuff, (char *)DemodBuffer, numBits);
+ if (numBits==0) return 0;
+ PrintAndLog("DemodBuffer: %s",printBuff);
+ } else {
+ printDemodBuff();
+ }
return 1;
}
int CmdAmp(const char *Cmd)
if(size > (8*32)+2) size = (8*32)+2; //only output a max of 8 blocks of 32 bits most tags will have full bit stream inside that sample size
if (verbose) {
PrintAndLog("FSK decoded bitstream:");
- printBitStream(BitStream,size);
+ printBitStream(BitStream,size);
}
return 1;
}
if (invert != 0 && invert != 1) {
if (verbose) PrintAndLog("Invalid argument: %s", Cmd);
- return -1;
+ return 0;
}
uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0};
size_t BitLen = getFromGraphBuf(BitStream);
uint8_t carrier=countPSK_FC(BitStream, BitLen);
if (carrier!=2 && carrier!=4 && carrier!=8){
//invalid carrier
- return -1;
+ return 0;
}
int errCnt=0;
errCnt = pskRawDemod(BitStream, &BitLen, &clk, &invert);
if (errCnt > maxErr){
if (g_debugMode==1 && verbose) PrintAndLog("Too many errors found, clk: %d, invert: %d, numbits: %d, errCnt: %d",clk,invert,BitLen,errCnt);
- return -1;
+ return 0;
}
if (errCnt<0|| BitLen<16){ //throw away static - allow 1 and -1 (in case of threshold command first)
if (g_debugMode==1 && verbose) PrintAndLog("no data found, clk: %d, invert: %d, numbits: %d, errCnt: %d",clk,invert,BitLen,errCnt);
- return -1;
+ return 0;
+ }
+ if (verbose) {
+ PrintAndLog("Tried PSK Demod using Clock: %d - invert: %d - Bits Found: %d",clk,invert,BitLen);
+ if (errCnt>0){
+ PrintAndLog("# Errors during Demoding (shown as 77 in bit stream): %d",errCnt);
+ }
}
- if (verbose) PrintAndLog("Tried PSK Demod using Clock: %d - invert: %d - Bits Found: %d",clk,invert,BitLen);
//prime demod buffer for output
setDemodBuf(BitStream,BitLen,0);
- return errCnt;
+ return 1;
}
// Indala 26 bit decode
ans = PSKDemod("32", 0);
}
- if (ans < 0){
+ if ( !ans ){
if (g_debugMode==1)
PrintAndLog("Error1: %d",ans);
return 0;
if (g_debugMode==1 && verbose) PrintAndLog("no data found, clk: %d, invert: %d, numbits: %d, errCnt: %d",clk,invert,BitLen,errCnt);
return 0;
}
- PrintAndLog("Tried NRZ Demod using Clock: %d - invert: %d - Bits Found: %d",clk,invert,BitLen);
+ if (verbose)
+ PrintAndLog("Tried NRZ Demod using Clock: %d - invert: %d - Bits Found: %d",clk,invert,BitLen);
//prime demod buffer for output
setDemodBuf(BitStream,BitLen,0);
PrintAndLog("# Errors during Demoding (shown as 77 in bit stream): %d",errCnt);
}
if (verbose) {
- PrintAndLog("NRZ demoded bitstream:");
- // Now output the bitstream to the scrollback by line of 16 bits
- printDemodBuff();
+ PrintAndLog("NRZ demoded bitstream:");
+ // Now output the bitstream to the scrollback by line of 16 bits
+ printDemodBuff();
}
return 1;
}
// prints binary found and saves in demodbuffer for further commands
int CmdPSK1rawDemod(const char *Cmd)
{
- int errCnt;
+ int ans;
char cmdp = param_getchar(Cmd, 0);
if (strlen(Cmd) > 10 || cmdp == 'h' || cmdp == 'H') {
PrintAndLog("Usage: data rawdemod p1 [clock] <0|1> [maxError]");
PrintAndLog(" : data rawdemod p1 64 1 0 = demod a psk1 tag from GraphBuffer using a clock of RF/64, inverting data and allowing 0 demod errors");
return 0;
}
- errCnt = PSKDemod(Cmd, TRUE);
+ ans = PSKDemod(Cmd, TRUE);
//output
- if (errCnt<0){
- if (g_debugMode) PrintAndLog("Error demoding: %d",errCnt);
+ if ( !ans){
+ if (g_debugMode) PrintAndLog("Error demoding: %d",ans);
return 0;
}
- if (errCnt>0){
- PrintAndLog("# Errors during Demoding (shown as 77 in bit stream): %d",errCnt);
- }
PrintAndLog("PSK demoded bitstream:");
// Now output the bitstream to the scrollback by line of 16 bits
printDemodBuff();
// takes same args as cmdpsk1rawdemod
int CmdPSK2rawDemod(const char *Cmd)
{
- int errCnt=0;
+ int ans=0;
char cmdp = param_getchar(Cmd, 0);
if (strlen(Cmd) > 10 || cmdp == 'h' || cmdp == 'H') {
PrintAndLog("Usage: data rawdemod p2 [clock] <0|1> [maxError]");
PrintAndLog(" : data rawdemod p2 64 1 0 = demod a psk2 tag from GraphBuffer using a clock of RF/64, inverting output and allowing 0 demod errors");
return 0;
}
- errCnt=PSKDemod(Cmd, TRUE);
- if (errCnt<0){
- if (g_debugMode) PrintAndLog("Error demoding: %d",errCnt);
+ ans=PSKDemod(Cmd, TRUE);
+ if (!ans){
+ if (g_debugMode) PrintAndLog("Error demoding: %d",ans);
return 0;
}
psk1TOpsk2(DemodBuffer, DemodBufferLen);
- if (errCnt>0){
- if (g_debugMode){
- PrintAndLog("# Errors during Demoding (shown as 77 in bit stream): %d",errCnt);
- PrintAndLog("PSK2 demoded bitstream:");
- // Now output the bitstream to the scrollback by line of 16 bits
- printDemodBuff();
- }
- }else{
- PrintAndLog("PSK2 demoded bitstream:");
- // Now output the bitstream to the scrollback by line of 16 bits
- printDemodBuff();
- }
+ PrintAndLog("PSK2 demoded bitstream:");
+ // Now output the bitstream to the scrollback by line of 16 bits
+ printDemodBuff();
return 1;
}
//{"nrzrawdemod", CmdNRZrawDemod, 1, "[clock] [invert<0|1>] [maxErr] -- Attempt to demodulate nrz tags and output binary (args optional)"},
{"plot", CmdPlot, 1, "Show graph window (hit 'h' in window for keystroke help)"},
//{"pskdetectclock",CmdDetectPSKClockRate, 1, "Detect ASK, PSK, or NRZ clock rate"},
- {"printdemodbuffer",CmdPrintDemodBuff,1, "[clock] [invert<0|1>] -- Demodulate an indala tag (PSK1) from GraphBuffer (args optional)"},
+ {"printdemodbuffer",CmdPrintDemodBuff,1, "[x] -- 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)"},
//{"psk1rawdemod", CmdPSK1rawDemod, 1, "[clock] [invert<0|1>] [maxErr] -- Attempt to demodulate psk1 tags and output binary (args optional)"},
//{"psk2rawdemod", CmdPSK2rawDemod, 1, "[clock] [invert<0|1>] [maxErr] -- Attempt to demodulate psk2 tags and output binary (args optional)"},
projects / proxmark3-svn / blobdiff