Merge pull request #220 from marshmellow42/master

small patches and small added features listed below:

diff --git a/CHANGELOG.md b/CHANGELOG.md
index 936fbbd07710768713d582e47f89bf9459ba07e7..d016b76d85a4815dd8c467fbc87680ec9204900f 100644 (file)
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -5,6 +5,9 @@ This project uses the changelog in accordance with [keepchangelog](http://keepac
 ## [unreleased][unreleased]
 
 ### Added
+- Added markers in the graph around found Sequence Terminator after askmandemod.
+- Added data mtrim <start> <stop> command to trim out samples between start and stop
+- Added data setgraphmarkers <orange> <blue> command to set two extra markers on the graph (marshmellow)
 - Added EM4x05/EM4x69 chip detection to lf search (marshmellow) 
 - Added lf em 4x05dump command to read and output all the blocks of the chip (marshmellow)
 - Added lf em 4x05info command to read and display information about the chip (marshmellow)
@@ -41,6 +44,7 @@ This project uses the changelog in accordance with [keepchangelog](http://keepac
 - Added option c to 'hf list' (mark CRC bytes) (piwi)
 
 ### Changed
+- hf mf dump - added retry loops to try each read attempt up to 3 times.  makes getting a complete dump easier with many antennas. 
 - small changes to lf psk and fsk demods to improve results when the trace begins with noise or the chip isn't broadcasting yet (marshmellow)
 - NOTE CHANGED ALL `lf em4x em*` cmds to simpler `lf em ` - example: `lf em4x em410xdemod` is now `lf em 410xdemod`
 - Renamed and rebuilt `lf em readword` && readwordpwd to `lf em 4x05readword` - it now demods and outputs the read block (marshmellow/iceman)

diff --git a/armsrc/lfops.c b/armsrc/lfops.c
index d79c75a0bf68784a3fcbc46ad5ac3ef158e64f08..75aa134240aedffa1eb5b73f4482a76920ef637f 100644 (file)
--- a/armsrc/lfops.c
+++ b/armsrc/lfops.c
@@ -1571,27 +1571,27 @@ void SendForward(uint8_t fwd_bit_count) {
        fwd_write_ptr = forwardLink_data;
        fwd_bit_sz = fwd_bit_count;
 
-       // Set up FPGA, 125kHz
+       // Set up FPGA, 125kHz or 95 divisor
        LFSetupFPGAForADC(95, true);
 
        // force 1st mod pulse (start gap must be longer for 4305)
        fwd_bit_sz--; //prepare next bit modulation
        fwd_write_ptr++;
        FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF); // field off
-       SpinDelayUs(56*8); //55 cycles off (8us each)for 4305  /another reader has 37 here...
+       WaitUS(55*8); //55 cycles off (8us each)for 4305  //another reader has 37 here...
        FpgaWriteConfWord(FPGA_MAJOR_MODE_LF_ADC | FPGA_LF_ADC_READER_FIELD);//field on
-       SpinDelayUs(18*8); //16 cycles on (8us each)  // another reader has 18 here
+       WaitUS(18*8); //18 cycles on (8us each)
 
        // now start writting
        while(fwd_bit_sz-- > 0) { //prepare next bit modulation
                if(((*fwd_write_ptr++) & 1) == 1)
-                       SpinDelayUs(32*8); //32 cycles at 125Khz (8us each)
+                       WaitUS(32*8); //32 cycles at 125Khz (8us each)
                else {
                        //These timings work for 4469/4269/4305 (with the 55*8 above)
                        FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF); // field off
-                       SpinDelayUs(23*8); //16-4 cycles off (8us each) //23  //one reader goes as high as 25 here
+                       WaitUS(23*8); //23 cycles off (8us each)
                        FpgaWriteConfWord(FPGA_MAJOR_MODE_LF_ADC | FPGA_LF_ADC_READER_FIELD);//field on
-                       SpinDelayUs(16*8); //16 cycles on (8us each) //9  // another reader goes to 17 here
+                       WaitUS(18*8); //18 cycles on (8us each)
                }
        }
 }
@@ -1618,6 +1618,7 @@ void EM4xReadWord(uint8_t Address, uint32_t Pwd, uint8_t PwdMode) {
        BigBuf_Clear_ext(false);
 
        LED_A_ON();
+       StartTicks();
        //If password mode do login
        if (PwdMode == 1) EM4xLogin(Pwd);
 
@@ -1626,7 +1627,7 @@ void EM4xReadWord(uint8_t Address, uint32_t Pwd, uint8_t PwdMode) {
        fwd_bit_count += Prepare_Addr( Address );
 
        SendForward(fwd_bit_count);
-       SpinDelayUs(400);
+       WaitUS(400);
        // Now do the acquisition
        DoPartialAcquisition(20, true, 6000);
        
@@ -1645,6 +1646,7 @@ void EM4xWriteWord(uint32_t flag, uint32_t Data, uint32_t Pwd) {
        BigBuf_Clear_ext(false);
 
        LED_A_ON();
+       StartTicks();
        //If password mode do login
        if (PwdMode) EM4xLogin(Pwd);
 
@@ -1658,7 +1660,7 @@ void EM4xWriteWord(uint32_t flag, uint32_t Data, uint32_t Pwd) {
        //Wait for write to complete
        //SpinDelay(10);
 
-       SpinDelayUs(6500);
+       WaitUS(6500);
        //Capture response if one exists
        DoPartialAcquisition(20, true, 6000);
 

diff --git a/client/cmddata.c b/client/cmddata.c
index f8a7dec749befb7b9fc8a09450728d98727fe9d2..2a83a4d49c376ec9f010e2d5d358971947c453ee 100644 (file)
--- a/client/cmddata.c
+++ b/client/cmddata.c
@@ -341,11 +341,14 @@ int ASKDemod_ext(const char *Cmd, bool verbose, bool emSearch, uint8_t askType,
                askAmp(BitStream, BitLen); 
        }
        bool st = false;
-       if (*stCheck) st = DetectST(BitStream, &BitLen, &foundclk);
+       size_t ststart = 0, stend = 0;
+       if (*stCheck) st = DetectST_ext(BitStream, &BitLen, &foundclk, &ststart, &stend);
        if (st) {
                *stCheck = st;
                clk = (clk == 0) ? foundclk : clk;
-               if (verbose || g_debugMode) PrintAndLog("\nFound Sequence Terminator");
+               CursorCPos = ststart;
+               CursorDPos = stend;
+               if (verbose || g_debugMode) PrintAndLog("\nFound Sequence Terminator - First one is shown by orange and blue graph markers");
        }
        int errCnt = askdemod(BitStream, &BitLen, &clk, &invert, maxErr, askamp, askType);
        if (errCnt<0 || BitLen<16){  //if fatal error (or -1)
@@ -1907,6 +1910,12 @@ int CmdGrid(const char *Cmd)
        return 0;
 }
 
+int CmdSetGraphMarkers(const char *Cmd) {
+       sscanf(Cmd, "%i %i", &CursorCPos, &CursorDPos);
+       RepaintGraphWindow();
+       return 0;
+}
+
 int CmdHexsamples(const char *Cmd)
 {
        int i, j;
@@ -2160,6 +2169,22 @@ int CmdRtrim(const char *Cmd)
        return 0;
 }
 
+// trim graph (middle) piece
+int CmdMtrim(const char *Cmd) {
+       int start = 0, stop = 0;
+       sscanf(Cmd, "%i %i", &start, &stop);
+
+       if (start > GraphTraceLen       || stop > GraphTraceLen || start > stop) return 0;
+       start++; //leave start position sample
+
+       GraphTraceLen -= stop - start;
+       for (int i = 0; i < GraphTraceLen; i++) {
+               GraphBuffer[start+i] = GraphBuffer[stop+i];
+       }
+       return 0;
+}
+
+
 int CmdNorm(const char *Cmd)
 {
        int i;
@@ -2410,6 +2435,7 @@ static command_t CommandTable[] =
        {"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"},
+       {"mtrim",           CmdMtrim,           1, "<start> <stop> -- Trim out samples from the specified start to the specified stop"},
        {"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)"},
@@ -2419,6 +2445,7 @@ static command_t CommandTable[] =
        {"rawdemod",        CmdRawDemod,        1, "[modulation] ... <options> -see help (h option) -- Demodulate the data in the GraphBuffer and output binary"},  
        {"samples",         CmdSamples,         0, "[512 - 40000] -- Get raw samples for graph window (GraphBuffer)"},
        {"save",            CmdSave,            1, "<filename> -- Save trace (from graph window)"},
+       {"setgraphmarkers", CmdSetGraphMarkers, 1, "[orange_marker] [blue_marker] (in graph window)"},
        {"scale",           CmdScale,           1, "<int> -- Set cursor display scale"},
        {"setdebugmode",    CmdSetDebugMode,    1, "<0|1|2> -- Turn on or off Debugging Level for lf demods"},
        {"shiftgraphzero",  CmdGraphShiftZero,  1, "<shift> -- Shift 0 for Graphed wave + or - shift value"},

diff --git a/client/cmdhfmf.c b/client/cmdhfmf.c
index 3fc3f8f7977fc657ecb8adfac8813d7db37b1be7..d5ce118b52d70452ae36b719feefe4a4e40585dd 100644 (file)
--- a/client/cmdhfmf.c
+++ b/client/cmdhfmf.c
@@ -328,29 +328,32 @@ int CmdHF14AMfDump(const char *Cmd)
        PrintAndLog("|-----------------------------------------|");\r
        PrintAndLog("|------ Reading sector access bits...-----|");\r
        PrintAndLog("|-----------------------------------------|");\r
-       \r
+       uint8_t tries = 0;\r
        for (sectorNo = 0; sectorNo < numSectors; sectorNo++) {\r
-               UsbCommand c = {CMD_MIFARE_READBL, {FirstBlockOfSector(sectorNo) + NumBlocksPerSector(sectorNo) - 1, 0, 0}};\r
-               memcpy(c.d.asBytes, keyA[sectorNo], 6);\r
-               SendCommand(&c);\r
+               for (tries = 0; tries < 3; tries++) {           \r
+                       UsbCommand c = {CMD_MIFARE_READBL, {FirstBlockOfSector(sectorNo) + NumBlocksPerSector(sectorNo) - 1, 0, 0}};\r
+                       memcpy(c.d.asBytes, keyA[sectorNo], 6);\r
+                       SendCommand(&c);\r
 \r
-               if (WaitForResponseTimeout(CMD_ACK,&resp,1500)) {\r
-                       uint8_t isOK  = resp.arg[0] & 0xff;\r
-                       uint8_t *data  = resp.d.asBytes;\r
-                       if (isOK){\r
-                               rights[sectorNo][0] = ((data[7] & 0x10)>>2) | ((data[8] & 0x1)<<1) | ((data[8] & 0x10)>>4); // C1C2C3 for data area 0\r
-                               rights[sectorNo][1] = ((data[7] & 0x20)>>3) | ((data[8] & 0x2)<<0) | ((data[8] & 0x20)>>5); // C1C2C3 for data area 1\r
-                               rights[sectorNo][2] = ((data[7] & 0x40)>>4) | ((data[8] & 0x4)>>1) | ((data[8] & 0x40)>>6); // C1C2C3 for data area 2\r
-                               rights[sectorNo][3] = ((data[7] & 0x80)>>5) | ((data[8] & 0x8)>>2) | ((data[8] & 0x80)>>7); // C1C2C3 for sector trailer\r
+                       if (WaitForResponseTimeout(CMD_ACK,&resp,1500)) {\r
+                               uint8_t isOK  = resp.arg[0] & 0xff;\r
+                               uint8_t *data  = resp.d.asBytes;\r
+                               if (isOK){\r
+                                       rights[sectorNo][0] = ((data[7] & 0x10)>>2) | ((data[8] & 0x1)<<1) | ((data[8] & 0x10)>>4); // C1C2C3 for data area 0\r
+                                       rights[sectorNo][1] = ((data[7] & 0x20)>>3) | ((data[8] & 0x2)<<0) | ((data[8] & 0x20)>>5); // C1C2C3 for data area 1\r
+                                       rights[sectorNo][2] = ((data[7] & 0x40)>>4) | ((data[8] & 0x4)>>1) | ((data[8] & 0x40)>>6); // C1C2C3 for data area 2\r
+                                       rights[sectorNo][3] = ((data[7] & 0x80)>>5) | ((data[8] & 0x8)>>2) | ((data[8] & 0x80)>>7); // C1C2C3 for sector trailer\r
+                                       break;\r
+                               } else if (tries == 2) { // on last try set defaults\r
+                                       PrintAndLog("Could not get access rights for sector %2d. Trying with defaults...", sectorNo);\r
+                                       rights[sectorNo][0] = rights[sectorNo][1] = rights[sectorNo][2] = 0x00;\r
+                                       rights[sectorNo][3] = 0x01;\r
+                               }\r
                        } else {\r
-                               PrintAndLog("Could not get access rights for sector %2d. Trying with defaults...", sectorNo);\r
+                               PrintAndLog("Command execute timeout when trying to read access rights for sector %2d. Trying with defaults...", sectorNo);\r
                                rights[sectorNo][0] = rights[sectorNo][1] = rights[sectorNo][2] = 0x00;\r
                                rights[sectorNo][3] = 0x01;\r
                        }\r
-               } else {\r
-                       PrintAndLog("Command execute timeout when trying to read access rights for sector %2d. Trying with defaults...", sectorNo);\r
-                       rights[sectorNo][0] = rights[sectorNo][1] = rights[sectorNo][2] = 0x00;\r
-                       rights[sectorNo][3] = 0x01;\r
                }\r
        }\r
        \r
@@ -362,27 +365,33 @@ int CmdHF14AMfDump(const char *Cmd)
        for (sectorNo = 0; isOK && sectorNo < numSectors; sectorNo++) {\r
                for (blockNo = 0; isOK && blockNo < NumBlocksPerSector(sectorNo); blockNo++) {\r
                        bool received = false;\r
-                       \r
-                       if (blockNo == NumBlocksPerSector(sectorNo) - 1) {              // sector trailer. At least the Access Conditions can always be read with key A. \r
-                               UsbCommand c = {CMD_MIFARE_READBL, {FirstBlockOfSector(sectorNo) + blockNo, 0, 0}};\r
-                               memcpy(c.d.asBytes, keyA[sectorNo], 6);\r
-                               SendCommand(&c);\r
-                               received = WaitForResponseTimeout(CMD_ACK,&resp,1500);\r
-                       } else {                                                                                                // data block. Check if it can be read with key A or key B\r
-                               uint8_t data_area = sectorNo<32?blockNo:blockNo/5;\r
-                               if ((rights[sectorNo][data_area] == 0x03) || (rights[sectorNo][data_area] == 0x05)) {   // only key B would work\r
-                                       UsbCommand c = {CMD_MIFARE_READBL, {FirstBlockOfSector(sectorNo) + blockNo, 1, 0}};\r
-                                       memcpy(c.d.asBytes, keyB[sectorNo], 6);\r
-                                       SendCommand(&c);\r
-                                       received = WaitForResponseTimeout(CMD_ACK,&resp,1500);\r
-                               } else if (rights[sectorNo][data_area] == 0x07) {                                                                               // no key would work\r
-                                       isOK = false;\r
-                                       PrintAndLog("Access rights do not allow reading of sector %2d block %3d", sectorNo, blockNo);\r
-                               } else {                                                                                                                                                                // key A would work\r
+                       for (tries = 0; tries < 3; tries++) {                   \r
+                               if (blockNo == NumBlocksPerSector(sectorNo) - 1) {              // sector trailer. At least the Access Conditions can always be read with key A. \r
                                        UsbCommand c = {CMD_MIFARE_READBL, {FirstBlockOfSector(sectorNo) + blockNo, 0, 0}};\r
                                        memcpy(c.d.asBytes, keyA[sectorNo], 6);\r
                                        SendCommand(&c);\r
                                        received = WaitForResponseTimeout(CMD_ACK,&resp,1500);\r
+                               } else {                                                                                                // data block. Check if it can be read with key A or key B\r
+                                       uint8_t data_area = sectorNo<32?blockNo:blockNo/5;\r
+                                       if ((rights[sectorNo][data_area] == 0x03) || (rights[sectorNo][data_area] == 0x05)) {   // only key B would work\r
+                                               UsbCommand c = {CMD_MIFARE_READBL, {FirstBlockOfSector(sectorNo) + blockNo, 1, 0}};\r
+                                               memcpy(c.d.asBytes, keyB[sectorNo], 6);\r
+                                               SendCommand(&c);\r
+                                               received = WaitForResponseTimeout(CMD_ACK,&resp,1500);\r
+                                       } else if (rights[sectorNo][data_area] == 0x07) {                                                                               // no key would work\r
+                                               isOK = false;\r
+                                               PrintAndLog("Access rights do not allow reading of sector %2d block %3d", sectorNo, blockNo);\r
+                                               tries = 2;\r
+                                       } else {                                                                                                                                                                // key A would work\r
+                                               UsbCommand c = {CMD_MIFARE_READBL, {FirstBlockOfSector(sectorNo) + blockNo, 0, 0}};\r
+                                               memcpy(c.d.asBytes, keyA[sectorNo], 6);\r
+                                               SendCommand(&c);\r
+                                               received = WaitForResponseTimeout(CMD_ACK,&resp,1500);\r
+                                       }\r
+                               }\r
+                               if (received) {\r
+                                       isOK  = resp.arg[0] & 0xff;\r
+                                       if (isOK) break;\r
                                }\r
                        }\r
 \r

diff --git a/client/proxgui.h b/client/proxgui.h
index 94b47acdf2bfb5d70a91a42227285df468aa95a9..ef9ac36ab616cb71ac68bd939a58f7f21af4267f 100644 (file)
--- a/client/proxgui.h
+++ b/client/proxgui.h
@@ -23,7 +23,7 @@ void ExitGraphics(void);
 extern int GraphBuffer[MAX_GRAPH_TRACE_LEN];
 extern int GraphTraceLen;
 extern double CursorScaleFactor;
-extern int PlotGridX, PlotGridY, PlotGridXdefault, PlotGridYdefault;
+extern int PlotGridX, PlotGridY, PlotGridXdefault, PlotGridYdefault, CursorCPos, CursorDPos;
 extern int CommandFinished;
 extern int offline;
 

diff --git a/client/proxguiqt.cpp b/client/proxguiqt.cpp
index 3e9bdfd5f7add82182a3675c015f560e44e84313..cd8297ef6fd67c38be33033bd6bda32b8b517091 100644 (file)
--- a/client/proxguiqt.cpp
+++ b/client/proxguiqt.cpp
@@ -102,7 +102,7 @@ ProxGuiQT::~ProxGuiQT(void)
 void ProxWidget::paintEvent(QPaintEvent *event)
 {
        QPainter painter(this);
-       QPainterPath penPath, whitePath, greyPath, lightgreyPath, cursorAPath, cursorBPath;
+       QPainterPath penPath, whitePath, greyPath, lightgreyPath, cursorAPath, cursorBPath, cursorCPath, cursorDPath;
        QRect r;
        QBrush brush(QColor(100, 255, 100));
        QPen pen(QColor(100, 255, 100));
@@ -117,6 +117,10 @@ void ProxWidget::paintEvent(QPaintEvent *event)
                CursorAPos= 0;
        if(CursorBPos > GraphTraceLen)
                CursorBPos= 0;
+       if(CursorCPos > GraphTraceLen)
+               CursorCPos= 0;
+       if(CursorDPos > GraphTraceLen)
+               CursorDPos= 0;
 
        r = rect();
 
@@ -242,13 +246,17 @@ void ProxWidget::paintEvent(QPaintEvent *event)
                        penPath.moveTo(x,y);
                }
 
-               if(i == CursorAPos || i == CursorBPos) {
+               if(i == CursorAPos || i == CursorBPos || i == CursorCPos || i == CursorDPos) {
                        QPainterPath *cursorPath;
 
                        if(i == CursorAPos) {
                                cursorPath = &cursorAPath;
-                       } else {
+                       } else if (i == CursorBPos) {
                                cursorPath = &cursorBPath;
+                       } else if (i == CursorCPos) {
+                               cursorPath = &cursorCPath;
+                       } else {
+                               cursorPath = &cursorDPath;
                        }
                        cursorPath->moveTo(x, r.top());
                        cursorPath->lineTo(x, r.bottom());
@@ -268,6 +276,10 @@ void ProxWidget::paintEvent(QPaintEvent *event)
        painter.drawPath(cursorAPath);
        painter.setPen(QColor(255, 0, 255));
        painter.drawPath(cursorBPath);
+       painter.setPen(QColor(255, 153, 0)); //orange
+       painter.drawPath(cursorCPath);
+       painter.setPen(QColor(0, 0, 205)); //light blue
+       painter.drawPath(cursorDPath);
 
        char str[200];
        sprintf(str, "@%d   max=%d min=%d mean=%d n=%d/%d    dt=%d [%.3f] zoom=%.3f CursorA=%d [%d] CursorB=%d [%d]    GridX=%d GridY=%d (%s)",

diff --git a/client/ui.c b/client/ui.c
index c0d01bc32983a2efb313f99640d745ce3af8cde9..ba230e3316fa70a35f0d7bc5cbd8a129c4422927 100644 (file)
--- a/client/ui.c
+++ b/client/ui.c
@@ -19,7 +19,7 @@
 #include "ui.h"
 
 double CursorScaleFactor;
-int PlotGridX, PlotGridY, PlotGridXdefault= 64, PlotGridYdefault= 64;
+int PlotGridX, PlotGridY, PlotGridXdefault= 64, PlotGridYdefault= 64, CursorCPos= 0, CursorDPos= 0;
 int offline;
 int flushAfterWrite = 0;  //buzzy
 extern pthread_mutex_t print_lock;

diff --git a/client/ui.h b/client/ui.h
index a45799d5c430dcad8094354a702cf81c9a7f47cb..4e03bfabbe95f108717c3b42f2e733fefbb266c2 100644 (file)
--- a/client/ui.h
+++ b/client/ui.h
@@ -19,7 +19,7 @@ void PrintAndLog(char *fmt, ...);
 void SetLogFilename(char *fn);
 
 extern double CursorScaleFactor;
-extern int PlotGridX, PlotGridY, PlotGridXdefault, PlotGridYdefault;
+extern int PlotGridX, PlotGridY, PlotGridXdefault, PlotGridYdefault, CursorCPos, CursorDPos;
 extern int offline;
 extern int flushAfterWrite;   //buzzy
 

diff --git a/common/lfdemod.c b/common/lfdemod.c
index f5fee22a853328230020db91257c465575ec4d97..3f597a1ff053cd69fdb1669f39a8966dda2ab0cb 100644 (file)
--- a/common/lfdemod.c
+++ b/common/lfdemod.c
@@ -218,8 +218,8 @@ uint8_t Em410xDecode(uint8_t *BitStream, size_t *size, size_t *startIdx, uint32_
        uint8_t FmtLen = 10; // sets of 4 bits = end data 
        *startIdx = 0;
        errChk = preambleSearch(BitStream, preamble, sizeof(preamble), size, startIdx);
-       if (errChk == 0 || *size < 64) return 0;
-       if (*size == 110) FmtLen = 22; // 22 sets of 4 bits
+       if ( errChk == 0 || (*size != 64 && *size != 128) ) return 0;
+       if (*size == 128) FmtLen = 22; // 22 sets of 4 bits
 
        //skip last 4bit parity row for simplicity
        *size = removeParity(BitStream, *startIdx + sizeof(preamble), 5, 0, FmtLen * 5);
@@ -1596,9 +1596,14 @@ int pskRawDemod(uint8_t dest[], size_t *size, int *clock, int *invert)
        return errCnt;
 }
 
+bool DetectST(uint8_t  buffer[], size_t *size, int *foundclock) {
+       size_t ststart = 0, stend = 0;
+       return DetectST_ext(buffer, size, foundclock, &ststart, &stend);
+}
+
 //by marshmellow
 //attempt to identify a Sequence Terminator in ASK modulated raw wave
-bool DetectST(uint8_t buffer[], size_t *size, int *foundclock) {
+bool DetectST_ext(uint8_t buffer[], size_t *size, int *foundclock, size_t *ststart, size_t *stend) {
        size_t bufsize = *size;
        //need to loop through all samples and identify our clock, look for the ST pattern
        uint8_t fndClk[] = {8,16,32,40,50,64,128};
@@ -1751,7 +1756,7 @@ bool DetectST(uint8_t buffer[], size_t *size, int *foundclock) {
        size_t newloc = 0;
        i=0;
        if (g_debugMode==2) prnt("DEBUG STT: Starting STT trim - start: %d, datalen: %d ",dataloc, datalen);            
-
+       bool firstrun = true;
        // warning - overwriting buffer given with raw wave data with ST removed...
        while ( dataloc < bufsize-(clk/2) ) {
                //compensate for long high at end of ST not being high due to signal loss... (and we cut out the start of wave high part)
@@ -1759,6 +1764,15 @@ bool DetectST(uint8_t buffer[], size_t *size, int *foundclock) {
                        for(i=0; i < clk/2-tol; ++i) {
                                buffer[dataloc+i] = high+5;
                        }
+               } //test for single sample outlier (high between two lows) in the case of very strong waves
+               if (buffer[dataloc] >= high && buffer[dataloc+2] <= low) {
+                       buffer[dataloc] = buffer[dataloc+2];
+                       buffer[dataloc+1] = buffer[dataloc+2];
+               }
+               if (firstrun) {
+                       *stend = dataloc;
+                       *ststart = dataloc-(clk*4);
+                       firstrun=false;
                }
                for (i=0; i<datalen; ++i) {
                        if (i+newloc < bufsize) {

diff --git a/common/lfdemod.h b/common/lfdemod.h
index a77eb604965fbd01e926b8cc9f3b72aaad3be386..3710955238cacfe60f028e2ac8bfd38766af520f 100644 (file)
--- a/common/lfdemod.h
+++ b/common/lfdemod.h
@@ -31,6 +31,7 @@ int      DetectNRZClock(uint8_t dest[], size_t size, int clock);
 int      DetectPSKClock(uint8_t dest[], size_t size, int clock);
 int      DetectStrongAskClock(uint8_t dest[], size_t size, uint8_t high, uint8_t low);
 bool     DetectST(uint8_t buffer[], size_t *size, int *foundclock);
+bool     DetectST_ext(uint8_t buffer[], size_t *size, int *foundclock, size_t *ststart, size_t *stend);
 int      fskdemod(uint8_t *dest, size_t size, uint8_t rfLen, uint8_t invert, uint8_t fchigh, uint8_t fclow);
 int      getHiLo(uint8_t *BitStream, size_t size, int *high, int *low, uint8_t fuzzHi, uint8_t fuzzLo);
 uint32_t manchesterEncode2Bytes(uint16_t datain);