mirror of
https://github.com/Proxmark/proxmark3.git
synced 2024-11-11 01:35:51 +08:00
3f306c6ded
Changed CmdBiphaseDecodeRaw to allow 7 digits Changed CmdFdxRead to read 39999 samples instead of 10000 to improve reading from small tags
1868 lines
60 KiB
C
1868 lines
60 KiB
C
//-----------------------------------------------------------------------------
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// Copyright (C) 2010 iZsh <izsh at fail0verflow.com>
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//
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// This code is licensed to you under the terms of the GNU GPL, version 2 or,
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// at your option, any later version. See the LICENSE.txt file for the text of
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// the license.
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//-----------------------------------------------------------------------------
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// Data and Graph commands
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//-----------------------------------------------------------------------------
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#include "cmddata.h"
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#include <stdio.h> // also included in util.h
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#include <string.h> // also included in util.h
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#include <inttypes.h>
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#include <limits.h> // for CmdNorm INT_MIN && INT_MAX
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#include "util.h"
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#include "cmdmain.h"
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#include "comms.h"
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#include "ui.h" // for show graph controls
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#include "graph.h" // for graph data
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#include "cmdparser.h"// already included in cmdmain.h
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#include "usb_cmd.h" // already included in cmdmain.h and proxmark3.h
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#include "lfdemod.h" // for demod code
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#include "loclass/cipherutils.h" // for decimating samples in getsamples
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#include "cmdlfem4x.h"// for em410x demod
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uint8_t DemodBuffer[MAX_DEMOD_BUF_LEN];
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uint8_t g_debugMode=0;
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size_t DemodBufferLen=0;
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int g_DemodStartIdx=0;
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int g_DemodClock=0;
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static int CmdHelp(const char *Cmd);
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//set the demod buffer with given array of binary (one bit per byte)
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//by marshmellow
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void setDemodBuf(uint8_t *buff, size_t size, size_t startIdx)
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{
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if (buff == NULL)
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return;
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if ( size > MAX_DEMOD_BUF_LEN - startIdx)
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size = MAX_DEMOD_BUF_LEN - startIdx;
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size_t i = 0;
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for (; i < size; i++){
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DemodBuffer[i]=buff[startIdx++];
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}
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DemodBufferLen=size;
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return;
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}
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bool getDemodBuf(uint8_t *buff, size_t *size) {
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if (buff == NULL) return false;
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if (size == NULL) return false;
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if (*size == 0) return false;
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*size = (*size > DemodBufferLen) ? DemodBufferLen : *size;
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memcpy(buff, DemodBuffer, *size);
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return true;
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}
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// option '1' to save DemodBuffer any other to restore
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void save_restoreDB(uint8_t saveOpt)
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{
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static uint8_t SavedDB[MAX_DEMOD_BUF_LEN];
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static size_t SavedDBlen;
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static bool DB_Saved = false;
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static int savedDemodStartIdx = 0;
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static int savedDemodClock = 0;
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if (saveOpt == GRAPH_SAVE) { //save
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memcpy(SavedDB, DemodBuffer, sizeof(DemodBuffer));
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SavedDBlen = DemodBufferLen;
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DB_Saved=true;
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savedDemodStartIdx = g_DemodStartIdx;
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savedDemodClock = g_DemodClock;
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} else if (DB_Saved) { //restore
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memcpy(DemodBuffer, SavedDB, sizeof(DemodBuffer));
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DemodBufferLen = SavedDBlen;
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g_DemodClock = savedDemodClock;
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g_DemodStartIdx = savedDemodStartIdx;
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}
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return;
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}
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int CmdSetDebugMode(const char *Cmd)
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{
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int demod=0;
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sscanf(Cmd, "%i", &demod);
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g_debugMode=(uint8_t)demod;
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return 1;
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}
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int usage_data_printdemodbuf(){
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PrintAndLog("Usage: data printdemodbuffer x o <offset> l <length>");
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PrintAndLog("Options: ");
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PrintAndLog(" h This help");
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PrintAndLog(" x output in hex (omit for binary output)");
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PrintAndLog(" o <offset> enter offset in # of bits");
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PrintAndLog(" l <length> enter length to print in # of bits or hex characters respectively");
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return 0;
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}
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//by marshmellow
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void printDemodBuff(void)
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{
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int bitLen = DemodBufferLen;
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if (bitLen<1) {
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PrintAndLog("no bits found in demod buffer");
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return;
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}
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if (bitLen>512) bitLen=512; //max output to 512 bits if we have more - should be plenty
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char *bin = sprint_bin_break(DemodBuffer,bitLen,16);
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PrintAndLog("%s",bin);
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return;
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}
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int CmdPrintDemodBuff(const char *Cmd)
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{
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char hex[512]={0x00};
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bool hexMode = false;
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bool errors = false;
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uint32_t offset = 0; //could be size_t but no param_get16...
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uint32_t length = 512;
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char cmdp = 0;
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while(param_getchar(Cmd, cmdp) != 0x00)
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{
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switch(param_getchar(Cmd, cmdp))
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{
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case 'h':
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case 'H':
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return usage_data_printdemodbuf();
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case 'x':
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case 'X':
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hexMode = true;
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cmdp++;
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break;
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case 'o':
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case 'O':
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offset = param_get32ex(Cmd, cmdp+1, 0, 10);
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if (!offset) errors = true;
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cmdp += 2;
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break;
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case 'l':
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case 'L':
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length = param_get32ex(Cmd, cmdp+1, 512, 10);
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if (!length) errors = true;
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cmdp += 2;
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break;
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default:
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PrintAndLog("Unknown parameter '%c'", param_getchar(Cmd, cmdp));
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errors = true;
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break;
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}
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if(errors) break;
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}
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//Validations
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if(errors) return usage_data_printdemodbuf();
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length = (length > (DemodBufferLen-offset)) ? DemodBufferLen-offset : length;
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int numBits = (length) & 0x00FFC; //make sure we don't exceed our string
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if (hexMode){
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char *buf = (char *) (DemodBuffer + offset);
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numBits = (numBits > sizeof(hex)) ? sizeof(hex) : numBits;
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numBits = binarraytohex(hex, buf, numBits);
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if (numBits==0) return 0;
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PrintAndLog("DemodBuffer: %s",hex);
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} else {
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PrintAndLog("DemodBuffer:\n%s", sprint_bin_break(DemodBuffer+offset,numBits,16));
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}
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return 1;
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}
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//by marshmellow
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//this function strictly converts >1 to 1 and <1 to 0 for each sample in the graphbuffer
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int CmdGetBitStream(const char *Cmd)
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{
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int i;
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CmdHpf(Cmd);
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for (i = 0; i < GraphTraceLen; i++) {
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if (GraphBuffer[i] >= 1) {
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GraphBuffer[i] = 1;
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} else {
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GraphBuffer[i] = 0;
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}
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}
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RepaintGraphWindow();
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return 0;
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}
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//by marshmellow
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//Cmd Args: Clock, invert, maxErr, maxLen as integers and amplify as char == 'a'
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// (amp may not be needed anymore)
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//verbose will print results and demoding messages
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//emSearch will auto search for EM410x format in bitstream
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//askType switches decode: ask/raw = 0, ask/manchester = 1
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int ASKDemod_ext(const char *Cmd, bool verbose, bool emSearch, uint8_t askType, bool *stCheck) {
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int invert=0;
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int clk=0;
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int maxErr=100;
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int maxLen=0;
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uint8_t askamp = 0;
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char amp = param_getchar(Cmd, 0);
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uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0};
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sscanf(Cmd, "%i %i %i %i %c", &clk, &invert, &maxErr, &maxLen, &);
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if (!maxLen) maxLen = BIGBUF_SIZE;
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if (invert != 0 && invert != 1) {
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PrintAndLog("Invalid argument: %s", Cmd);
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return 0;
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}
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if (clk==1){
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invert=1;
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clk=0;
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}
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size_t BitLen = getFromGraphBuf(BitStream);
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if (g_debugMode) PrintAndLog("DEBUG: Bitlen from grphbuff: %d",BitLen);
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if (BitLen < 255) return 0;
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if (maxLen < BitLen && maxLen != 0) BitLen = maxLen;
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int foundclk = 0;
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//amp before ST check
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if (amp == 'a' || amp == 'A') {
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askAmp(BitStream, BitLen);
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}
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bool st = false;
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size_t ststart = 0, stend = 0;
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if (*stCheck) st = DetectST(BitStream, &BitLen, &foundclk, &ststart, &stend);
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*stCheck = st;
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if (st) {
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clk = (clk == 0) ? foundclk : clk;
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CursorCPos = ststart;
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CursorDPos = stend;
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if (verbose || g_debugMode) PrintAndLog("\nFound Sequence Terminator - First one is shown by orange and blue graph markers");
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//Graph ST trim (for testing)
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//for (int i = 0; i < BitLen; i++) {
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// GraphBuffer[i] = BitStream[i]-128;
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//}
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//RepaintGraphWindow();
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}
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int startIdx = 0;
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int errCnt = askdemod_ext(BitStream, &BitLen, &clk, &invert, maxErr, askamp, askType, &startIdx);
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if (errCnt<0 || BitLen<16){ //if fatal error (or -1)
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if (g_debugMode) PrintAndLog("DEBUG: no data found %d, errors:%d, bitlen:%d, clock:%d",errCnt,invert,BitLen,clk);
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return 0;
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}
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if (errCnt > maxErr){
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if (g_debugMode) PrintAndLog("DEBUG: Too many errors found, errors:%d, bits:%d, clock:%d",errCnt, BitLen, clk);
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return 0;
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}
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if (verbose || g_debugMode) PrintAndLog("\nUsing Clock:%d, Invert:%d, Bits Found:%d",clk,invert,BitLen);
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//output
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setDemodBuf(BitStream,BitLen,0);
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setClockGrid(clk, startIdx);
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if (verbose || g_debugMode){
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if (errCnt>0) PrintAndLog("# Errors during Demoding (shown as 7 in bit stream): %d",errCnt);
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if (askType) PrintAndLog("ASK/Manchester - Clock: %d - Decoded bitstream:",clk);
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else PrintAndLog("ASK/Raw - Clock: %d - Decoded bitstream:",clk);
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// Now output the bitstream to the scrollback by line of 16 bits
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printDemodBuff();
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}
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uint64_t lo = 0;
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uint32_t hi = 0;
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if (emSearch){
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AskEm410xDecode(true, &hi, &lo);
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}
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return 1;
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}
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int ASKDemod(const char *Cmd, bool verbose, bool emSearch, uint8_t askType) {
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bool st = false;
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return ASKDemod_ext(Cmd, verbose, emSearch, askType, &st);
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}
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//by marshmellow
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//takes 5 arguments - clock, invert, maxErr, maxLen as integers and amplify as char == 'a'
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//attempts to demodulate ask while decoding manchester
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//prints binary found and saves in graphbuffer for further commands
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int Cmdaskmandemod(const char *Cmd)
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{
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char cmdp = param_getchar(Cmd, 0);
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if (strlen(Cmd) > 45 || cmdp == 'h' || cmdp == 'H') {
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PrintAndLog("Usage: data rawdemod am <s> [clock] <invert> [maxError] [maxLen] [amplify]");
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PrintAndLog(" ['s'] optional, check for Sequence Terminator");
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PrintAndLog(" [set clock as integer] optional, if not set, autodetect");
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PrintAndLog(" <invert>, 1 to invert output");
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PrintAndLog(" [set maximum allowed errors], default = 100");
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PrintAndLog(" [set maximum Samples to read], default = 32768 (512 bits at rf/64)");
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PrintAndLog(" <amplify>, 'a' to attempt demod with ask amplification, default = no amp");
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PrintAndLog("");
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PrintAndLog(" sample: data rawdemod am = demod an ask/manchester tag from GraphBuffer");
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PrintAndLog(" : data rawdemod am 32 = demod an ask/manchester tag from GraphBuffer using a clock of RF/32");
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PrintAndLog(" : data rawdemod am 32 1 = demod an ask/manchester tag from GraphBuffer using a clock of RF/32 and inverting data");
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PrintAndLog(" : data rawdemod am 1 = demod an ask/manchester tag from GraphBuffer while inverting data");
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PrintAndLog(" : data rawdemod am 64 1 0 = demod an ask/manchester tag from GraphBuffer using a clock of RF/64, inverting data and allowing 0 demod errors");
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return 0;
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}
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bool st = true;
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if (Cmd[0]=='s')
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return ASKDemod_ext(Cmd++, true, false, 1, &st);
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else if (Cmd[1] == 's')
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return ASKDemod_ext(Cmd+=2, true, false, 1, &st);
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else
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return ASKDemod(Cmd, true, false, 1);
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}
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//by marshmellow
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//manchester decode
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//stricktly take 10 and 01 and convert to 0 and 1
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int Cmdmandecoderaw(const char *Cmd)
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{
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int i =0;
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int errCnt=0;
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size_t size=0;
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int invert=0;
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int maxErr = 20;
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char cmdp = param_getchar(Cmd, 0);
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if (strlen(Cmd) > 5 || cmdp == 'h' || cmdp == 'H') {
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PrintAndLog("Usage: data manrawdecode [invert] [maxErr]");
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PrintAndLog(" Takes 10 and 01 and converts to 0 and 1 respectively");
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PrintAndLog(" --must have binary sequence in demodbuffer (run data askrawdemod first)");
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PrintAndLog(" [invert] invert output");
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PrintAndLog(" [maxErr] set number of errors allowed (default = 20)");
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PrintAndLog("");
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PrintAndLog(" sample: data manrawdecode = decode manchester bitstream from the demodbuffer");
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return 0;
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}
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if (DemodBufferLen==0) return 0;
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uint8_t BitStream[MAX_DEMOD_BUF_LEN]={0};
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int high=0,low=0;
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for (;i<DemodBufferLen;++i){
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if (DemodBuffer[i]>high) high=DemodBuffer[i];
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else if(DemodBuffer[i]<low) low=DemodBuffer[i];
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BitStream[i]=DemodBuffer[i];
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}
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if (high>7 || low <0 ){
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PrintAndLog("Error: please raw demod the wave first then manchester raw decode");
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return 0;
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}
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sscanf(Cmd, "%i %i", &invert, &maxErr);
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size=i;
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uint8_t alignPos = 0;
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errCnt=manrawdecode(BitStream, &size, invert, &alignPos);
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if (errCnt>=maxErr){
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PrintAndLog("Too many errors: %d",errCnt);
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return 0;
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}
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PrintAndLog("Manchester Decoded - # errors:%d - data:",errCnt);
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PrintAndLog("%s", sprint_bin_break(BitStream, size, 16));
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if (errCnt==0){
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uint64_t id = 0;
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uint32_t hi = 0;
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size_t idx=0;
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if (Em410xDecode(BitStream, &size, &idx, &hi, &id)){
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//need to adjust to set bitstream back to manchester encoded data
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//setDemodBuf(BitStream, size, idx);
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printEM410x(hi, id);
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}
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}
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return 1;
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}
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/**
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* @author marshmellow
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* biphase decode
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* decdoes 01 or 10 to 0 and 11 or 00 to 1
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* param offset adjust start position
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* param invert invert output
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* param maxErr maximum tolerated errors
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*/
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int CmdBiphaseDecodeRaw(const char *Cmd)
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{
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size_t size=0;
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int offset=0, invert=0, maxErr=20, errCnt=0;
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char cmdp = param_getchar(Cmd, 0);
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if (strlen(Cmd) > 7 || cmdp == 'h' || cmdp == 'H') {
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PrintAndLog("Usage: data biphaserawdecode [offset] [invert] [maxErr]");
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PrintAndLog(" Converts 10 or 01 to 1 and 11 or 00 to 0");
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PrintAndLog(" --must have binary sequence in demodbuffer (run data askrawdemod first)");
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PrintAndLog(" --invert for Conditional Dephase Encoding (CDP) AKA Differential Manchester");
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PrintAndLog("");
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PrintAndLog(" [offset <0|1>], set to 0 not to adjust start position or to 1 to adjust decode start position");
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PrintAndLog(" [invert <0|1>], set to 1 to invert output");
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PrintAndLog(" [maxErr int], set max errors tolerated - default=20");
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PrintAndLog("");
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PrintAndLog(" sample: data biphaserawdecode = decode biphase bitstream from the demodbuffer");
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PrintAndLog(" sample: data biphaserawdecode 1 1 = decode biphase bitstream from the demodbuffer, set offset, and invert output");
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return 0;
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}
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sscanf(Cmd, "%i %i %i", &offset, &invert, &maxErr);
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if (DemodBufferLen==0) {
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PrintAndLog("DemodBuffer Empty - run 'data rawdemod ar' first");
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return 0;
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}
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uint8_t BitStream[MAX_DEMOD_BUF_LEN]={0};
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size = sizeof(BitStream);
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if ( !getDemodBuf(BitStream, &size) ) return 0;
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errCnt=BiphaseRawDecode(BitStream, &size, &offset, invert);
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if (errCnt<0){
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PrintAndLog("Error during decode:%d", errCnt);
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return 0;
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}
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if (errCnt>maxErr){
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PrintAndLog("Too many errors attempting to decode: %d",errCnt);
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return 0;
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}
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if (errCnt>0){
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PrintAndLog("# Errors found during Demod (shown as 7 in bit stream): %d",errCnt);
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}
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PrintAndLog("Biphase Decoded using offset: %d - # invert:%d - data:",offset,invert);
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PrintAndLog("%s", sprint_bin_break(BitStream, size, 16));
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if (offset) setDemodBuf(DemodBuffer,DemodBufferLen-offset, offset); //remove first bit from raw demod
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setClockGrid(g_DemodClock, g_DemodStartIdx + g_DemodClock*offset/2);
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return 1;
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}
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//by marshmellow
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// - ASK Demod then Biphase decode GraphBuffer samples
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int ASKbiphaseDemod(const char *Cmd, bool verbose)
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{
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//ask raw demod GraphBuffer first
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int offset=0, clk=0, invert=0, maxErr=100;
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sscanf(Cmd, "%i %i %i %i", &offset, &clk, &invert, &maxErr);
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uint8_t BitStream[MAX_GRAPH_TRACE_LEN];
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size_t size = getFromGraphBuf(BitStream);
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int startIdx = 0;
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//invert here inverts the ask raw demoded bits which has no effect on the demod, but we need the pointer
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int errCnt = askdemod_ext(BitStream, &size, &clk, &invert, maxErr, 0, 0, &startIdx);
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if ( errCnt < 0 || errCnt > maxErr ) {
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if (g_debugMode) PrintAndLog("DEBUG: no data or error found %d, clock: %d", errCnt, clk);
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return 0;
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}
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//attempt to Biphase decode BitStream
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errCnt = BiphaseRawDecode(BitStream, &size, &offset, invert);
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if (errCnt < 0){
|
|
if (g_debugMode || verbose) PrintAndLog("Error BiphaseRawDecode: %d", errCnt);
|
|
return 0;
|
|
}
|
|
if (errCnt > maxErr) {
|
|
if (g_debugMode || verbose) PrintAndLog("Error BiphaseRawDecode too many errors: %d", errCnt);
|
|
return 0;
|
|
}
|
|
//success set DemodBuffer and return
|
|
setDemodBuf(BitStream, size, 0);
|
|
setClockGrid(clk, startIdx + clk*offset/2);
|
|
if (g_debugMode || verbose){
|
|
PrintAndLog("Biphase Decoded using offset: %d - clock: %d - # errors:%d - data:",offset,clk,errCnt);
|
|
printDemodBuff();
|
|
}
|
|
return 1;
|
|
}
|
|
//by marshmellow - see ASKbiphaseDemod
|
|
int Cmdaskbiphdemod(const char *Cmd)
|
|
{
|
|
char cmdp = param_getchar(Cmd, 0);
|
|
if (strlen(Cmd) > 25 || cmdp == 'h' || cmdp == 'H') {
|
|
PrintAndLog("Usage: data rawdemod ab [offset] [clock] <invert> [maxError] [maxLen] <amplify>");
|
|
PrintAndLog(" [offset], offset to begin biphase, default=0");
|
|
PrintAndLog(" [set clock as integer] optional, if not set, autodetect");
|
|
PrintAndLog(" <invert>, 1 to invert output");
|
|
PrintAndLog(" [set maximum allowed errors], default = 100");
|
|
PrintAndLog(" [set maximum Samples to read], default = 32768 (512 bits at rf/64)");
|
|
PrintAndLog(" <amplify>, 'a' to attempt demod with ask amplification, default = no amp");
|
|
PrintAndLog(" NOTE: <invert> can be entered as second or third argument");
|
|
PrintAndLog(" NOTE: <amplify> can be entered as first, second or last argument");
|
|
PrintAndLog(" NOTE: any other arg must have previous args set to work");
|
|
PrintAndLog("");
|
|
PrintAndLog(" NOTE: --invert for Conditional Dephase Encoding (CDP) AKA Differential Manchester");
|
|
PrintAndLog("");
|
|
PrintAndLog(" sample: data rawdemod ab = demod an ask/biph tag from GraphBuffer");
|
|
PrintAndLog(" : data rawdemod ab 0 a = demod an ask/biph tag from GraphBuffer, amplified");
|
|
PrintAndLog(" : data rawdemod ab 1 32 = demod an ask/biph tag from GraphBuffer using an offset of 1 and a clock of RF/32");
|
|
PrintAndLog(" : data rawdemod ab 0 32 1 = demod an ask/biph tag from GraphBuffer using a clock of RF/32 and inverting data");
|
|
PrintAndLog(" : data rawdemod ab 0 1 = demod an ask/biph tag from GraphBuffer while inverting data");
|
|
PrintAndLog(" : data rawdemod ab 0 64 1 0 = demod an ask/biph tag from GraphBuffer using a clock of RF/64, inverting data and allowing 0 demod errors");
|
|
PrintAndLog(" : data rawdemod ab 0 64 1 0 0 a = demod an ask/biph tag from GraphBuffer using a clock of RF/64, inverting data and allowing 0 demod errors, and amp");
|
|
return 0;
|
|
}
|
|
return ASKbiphaseDemod(Cmd, true);
|
|
}
|
|
|
|
//by marshmellow - see ASKDemod
|
|
int Cmdaskrawdemod(const char *Cmd)
|
|
{
|
|
char cmdp = param_getchar(Cmd, 0);
|
|
if (strlen(Cmd) > 35 || cmdp == 'h' || cmdp == 'H') {
|
|
PrintAndLog("Usage: data rawdemod ar [clock] <invert> [maxError] [maxLen] [amplify]");
|
|
PrintAndLog(" [set clock as integer] optional, if not set, autodetect");
|
|
PrintAndLog(" <invert>, 1 to invert output");
|
|
PrintAndLog(" [set maximum allowed errors], default = 100");
|
|
PrintAndLog(" [set maximum Samples to read], default = 32768 (1024 bits at rf/64)");
|
|
PrintAndLog(" <amplify>, 'a' to attempt demod with ask amplification, default = no amp");
|
|
PrintAndLog("");
|
|
PrintAndLog(" sample: data rawdemod ar = demod an ask tag from GraphBuffer");
|
|
PrintAndLog(" : data rawdemod ar a = demod an ask tag from GraphBuffer, amplified");
|
|
PrintAndLog(" : data rawdemod ar 32 = demod an ask tag from GraphBuffer using a clock of RF/32");
|
|
PrintAndLog(" : data rawdemod ar 32 1 = demod an ask tag from GraphBuffer using a clock of RF/32 and inverting data");
|
|
PrintAndLog(" : data rawdemod ar 1 = demod an ask tag from GraphBuffer while inverting data");
|
|
PrintAndLog(" : data rawdemod ar 64 1 0 = demod an ask tag from GraphBuffer using a clock of RF/64, inverting data and allowing 0 demod errors");
|
|
PrintAndLog(" : data rawdemod ar 64 1 0 0 a = demod an ask tag from GraphBuffer using a clock of RF/64, inverting data and allowing 0 demod errors, and amp");
|
|
return 0;
|
|
}
|
|
return ASKDemod(Cmd, true, false, 0);
|
|
}
|
|
|
|
int AutoCorrelate(const int *in, int *out, size_t len, int window, bool SaveGrph, bool verbose)
|
|
{
|
|
static int CorrelBuffer[MAX_GRAPH_TRACE_LEN];
|
|
size_t Correlation = 0;
|
|
int maxSum = 0;
|
|
int lastMax = 0;
|
|
if (verbose) PrintAndLog("performing %d correlations", GraphTraceLen - window);
|
|
for (int i = 0; i < len - window; ++i) {
|
|
int sum = 0;
|
|
for (int j = 0; j < window; ++j) {
|
|
sum += (in[j]*in[i + j]) / 256;
|
|
}
|
|
CorrelBuffer[i] = sum;
|
|
if (sum >= maxSum-100 && sum <= maxSum+100) {
|
|
//another max
|
|
Correlation = i-lastMax;
|
|
lastMax = i;
|
|
if (sum > maxSum) maxSum = sum;
|
|
} else if (sum > maxSum) {
|
|
maxSum=sum;
|
|
lastMax = i;
|
|
}
|
|
}
|
|
if (Correlation==0) {
|
|
//try again with wider margin
|
|
for (int i = 0; i < len - window; i++) {
|
|
if (CorrelBuffer[i] >= maxSum-(maxSum*0.05) && CorrelBuffer[i] <= maxSum+(maxSum*0.05)) {
|
|
//another max
|
|
Correlation = i-lastMax;
|
|
lastMax = i;
|
|
}
|
|
}
|
|
}
|
|
if (verbose && Correlation > 0) PrintAndLog("Possible Correlation: %d samples",Correlation);
|
|
|
|
if (SaveGrph) {
|
|
//GraphTraceLen = GraphTraceLen - window;
|
|
memcpy(out, CorrelBuffer, len * sizeof(int));
|
|
RepaintGraphWindow();
|
|
}
|
|
return Correlation;
|
|
}
|
|
|
|
int usage_data_autocorr(void)
|
|
{
|
|
//print help
|
|
PrintAndLog("Usage: data autocorr [window] [g]");
|
|
PrintAndLog("Options: ");
|
|
PrintAndLog(" h This help");
|
|
PrintAndLog(" [window] window length for correlation - default = 4000");
|
|
PrintAndLog(" g save back to GraphBuffer (overwrite)");
|
|
return 0;
|
|
}
|
|
|
|
int CmdAutoCorr(const char *Cmd)
|
|
{
|
|
char cmdp = param_getchar(Cmd, 0);
|
|
if (cmdp == 'h' || cmdp == 'H')
|
|
return usage_data_autocorr();
|
|
int window = 4000; //set default
|
|
char grph=0;
|
|
bool updateGrph = false;
|
|
sscanf(Cmd, "%i %c", &window, &grph);
|
|
|
|
if (window >= GraphTraceLen) {
|
|
PrintAndLog("window must be smaller than trace (%d samples)",
|
|
GraphTraceLen);
|
|
return 0;
|
|
}
|
|
if (grph == 'g') updateGrph=true;
|
|
return AutoCorrelate(GraphBuffer, GraphBuffer, GraphTraceLen, window, updateGrph, true);
|
|
}
|
|
|
|
int CmdBitsamples(const char *Cmd)
|
|
{
|
|
int cnt = 0;
|
|
uint8_t got[12288];
|
|
|
|
GetFromBigBuf(got, sizeof(got), 0 , NULL, -1, false);
|
|
|
|
for (int j = 0; j < sizeof(got); j++) {
|
|
for (int k = 0; k < 8; k++) {
|
|
if(got[j] & (1 << (7 - k))) {
|
|
GraphBuffer[cnt++] = 1;
|
|
} else {
|
|
GraphBuffer[cnt++] = 0;
|
|
}
|
|
}
|
|
}
|
|
GraphTraceLen = cnt;
|
|
RepaintGraphWindow();
|
|
return 0;
|
|
}
|
|
|
|
int CmdBuffClear(const char *Cmd)
|
|
{
|
|
UsbCommand c = {CMD_BUFF_CLEAR};
|
|
SendCommand(&c);
|
|
ClearGraph(true);
|
|
return 0;
|
|
}
|
|
|
|
int CmdDec(const char *Cmd)
|
|
{
|
|
for (int i = 0; i < (GraphTraceLen / 2); ++i)
|
|
GraphBuffer[i] = GraphBuffer[i * 2];
|
|
GraphTraceLen /= 2;
|
|
PrintAndLog("decimated by 2");
|
|
RepaintGraphWindow();
|
|
return 0;
|
|
}
|
|
/**
|
|
* Undecimate - I'd call it 'interpolate', but we'll save that
|
|
* name until someone does an actual interpolation command, not just
|
|
* blindly repeating samples
|
|
* @param Cmd
|
|
* @return
|
|
*/
|
|
int CmdUndec(const char *Cmd)
|
|
{
|
|
if(param_getchar(Cmd, 0) == 'h')
|
|
{
|
|
PrintAndLog("Usage: data undec [factor]");
|
|
PrintAndLog("This function performs un-decimation, by repeating each sample N times");
|
|
PrintAndLog("Options: ");
|
|
PrintAndLog(" h This help");
|
|
PrintAndLog(" factor The number of times to repeat each sample.[default:2]");
|
|
PrintAndLog("Example: 'data undec 3'");
|
|
return 0;
|
|
}
|
|
|
|
uint8_t factor = param_get8ex(Cmd, 0,2, 10);
|
|
//We have memory, don't we?
|
|
int swap[MAX_GRAPH_TRACE_LEN] = { 0 };
|
|
uint32_t g_index = 0, s_index = 0;
|
|
while(g_index < GraphTraceLen && s_index + factor < MAX_GRAPH_TRACE_LEN)
|
|
{
|
|
int count = 0;
|
|
for(count = 0; count < factor && s_index + count < MAX_GRAPH_TRACE_LEN; count++)
|
|
swap[s_index+count] = GraphBuffer[g_index];
|
|
|
|
s_index += count;
|
|
g_index++;
|
|
}
|
|
|
|
memcpy(GraphBuffer, swap, s_index * sizeof(int));
|
|
GraphTraceLen = s_index;
|
|
RepaintGraphWindow();
|
|
return 0;
|
|
}
|
|
|
|
//by marshmellow
|
|
//shift graph zero up or down based on input + or -
|
|
int CmdGraphShiftZero(const char *Cmd)
|
|
{
|
|
|
|
int shift=0;
|
|
//set options from parameters entered with the command
|
|
sscanf(Cmd, "%i", &shift);
|
|
int shiftedVal=0;
|
|
for(int i = 0; i<GraphTraceLen; i++){
|
|
shiftedVal=GraphBuffer[i]+shift;
|
|
if (shiftedVal>127)
|
|
shiftedVal=127;
|
|
else if (shiftedVal<-127)
|
|
shiftedVal=-127;
|
|
GraphBuffer[i]= shiftedVal;
|
|
}
|
|
CmdNorm("");
|
|
return 0;
|
|
}
|
|
|
|
int AskEdgeDetect(const int *in, int *out, int len, int threshold) {
|
|
int Last = 0;
|
|
for(int i = 1; i<len; i++) {
|
|
if (in[i]-in[i-1] >= threshold) //large jump up
|
|
Last = 127;
|
|
else if(in[i]-in[i-1] <= -1 * threshold) //large jump down
|
|
Last = -127;
|
|
out[i-1] = Last;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
//by marshmellow
|
|
//use large jumps in read samples to identify edges of waves and then amplify that wave to max
|
|
//similar to dirtheshold, threshold commands
|
|
//takes a threshold length which is the measured length between two samples then determines an edge
|
|
int CmdAskEdgeDetect(const char *Cmd)
|
|
{
|
|
int thresLen = 25;
|
|
int ans = 0;
|
|
sscanf(Cmd, "%i", &thresLen);
|
|
|
|
ans = AskEdgeDetect(GraphBuffer, GraphBuffer, GraphTraceLen, thresLen);
|
|
RepaintGraphWindow();
|
|
return ans;
|
|
}
|
|
|
|
/* Print our clock rate */
|
|
// uses data from graphbuffer
|
|
// adjusted to take char parameter for type of modulation to find the clock - by marshmellow.
|
|
int CmdDetectClockRate(const char *Cmd)
|
|
{
|
|
char cmdp = param_getchar(Cmd, 0);
|
|
if (strlen(Cmd) > 6 || strlen(Cmd) == 0 || cmdp == 'h' || cmdp == 'H') {
|
|
PrintAndLog("Usage: data detectclock [modulation] <clock>");
|
|
PrintAndLog(" [modulation as char], specify the modulation type you want to detect the clock of");
|
|
PrintAndLog(" <clock> , specify the clock (optional - to get best start position only)");
|
|
PrintAndLog(" 'a' = ask, 'f' = fsk, 'n' = nrz/direct, 'p' = psk");
|
|
PrintAndLog("");
|
|
PrintAndLog(" sample: data detectclock a = detect the clock of an ask modulated wave in the GraphBuffer");
|
|
PrintAndLog(" data detectclock f = detect the clock of an fsk modulated wave in the GraphBuffer");
|
|
PrintAndLog(" data detectclock p = detect the clock of an psk modulated wave in the GraphBuffer");
|
|
PrintAndLog(" data detectclock n = detect the clock of an nrz/direct modulated wave in the GraphBuffer");
|
|
}
|
|
int ans=0;
|
|
if (cmdp == 'a'){
|
|
ans = GetAskClock(Cmd+1, true, false);
|
|
} else if (cmdp == 'f'){
|
|
ans = GetFskClock("", true, false);
|
|
} else if (cmdp == 'n'){
|
|
ans = GetNrzClock("", true, false);
|
|
} else if (cmdp == 'p'){
|
|
ans = GetPskClock("", true, false);
|
|
} else {
|
|
PrintAndLog ("Please specify a valid modulation to detect the clock of - see option h for help");
|
|
}
|
|
return ans;
|
|
}
|
|
|
|
char *GetFSKType(uint8_t fchigh, uint8_t fclow, uint8_t invert)
|
|
{
|
|
static char fType[8];
|
|
memset(fType, 0x00, 8);
|
|
char *fskType = fType;
|
|
if (fchigh==10 && fclow==8){
|
|
if (invert) //fsk2a
|
|
memcpy(fskType, "FSK2a", 5);
|
|
else //fsk2
|
|
memcpy(fskType, "FSK2", 4);
|
|
} else if (fchigh == 8 && fclow == 5) {
|
|
if (invert)
|
|
memcpy(fskType, "FSK1", 4);
|
|
else
|
|
memcpy(fskType, "FSK1a", 5);
|
|
} else {
|
|
memcpy(fskType, "FSK??", 5);
|
|
}
|
|
return fskType;
|
|
}
|
|
|
|
//by marshmellow
|
|
//fsk raw demod and print binary
|
|
//takes 4 arguments - Clock, invert, fchigh, fclow
|
|
//defaults: clock = 50, invert=1, fchigh=10, fclow=8 (RF/10 RF/8 (fsk2a))
|
|
int FSKrawDemod(const char *Cmd, bool verbose)
|
|
{
|
|
//raw fsk demod no manchester decoding no start bit finding just get binary from wave
|
|
uint8_t rfLen, invert, fchigh, fclow;
|
|
//set defaults
|
|
//set options from parameters entered with the command
|
|
rfLen = param_get8(Cmd, 0);
|
|
invert = param_get8(Cmd, 1);
|
|
fchigh = param_get8(Cmd, 2);
|
|
fclow = param_get8(Cmd, 3);
|
|
|
|
if (strlen(Cmd)>0 && strlen(Cmd)<=2) {
|
|
if (rfLen==1) {
|
|
invert = 1; //if invert option only is used
|
|
rfLen = 0;
|
|
}
|
|
}
|
|
uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0};
|
|
size_t BitLen = getFromGraphBuf(BitStream);
|
|
if (BitLen==0) return 0;
|
|
//get field clock lengths
|
|
uint16_t fcs=0;
|
|
if (!fchigh || !fclow) {
|
|
fcs = countFC(BitStream, BitLen, 1);
|
|
if (!fcs) {
|
|
fchigh = 10;
|
|
fclow = 8;
|
|
} else {
|
|
fchigh = (fcs >> 8) & 0x00FF;
|
|
fclow = fcs & 0x00FF;
|
|
}
|
|
}
|
|
//get bit clock length
|
|
if (!rfLen) {
|
|
int firstClockEdge = 0; //todo - align grid on graph with this...
|
|
rfLen = detectFSKClk(BitStream, BitLen, fchigh, fclow, &firstClockEdge);
|
|
if (!rfLen) rfLen = 50;
|
|
}
|
|
int startIdx = 0;
|
|
int size = fskdemod(BitStream, BitLen, rfLen, invert, fchigh, fclow, &startIdx);
|
|
if (size > 0) {
|
|
setDemodBuf(BitStream,size,0);
|
|
setClockGrid(rfLen, startIdx);
|
|
|
|
// Now output the bitstream to the scrollback by line of 16 bits
|
|
if (verbose || g_debugMode) {
|
|
PrintAndLog("\nUsing Clock:%u, invert:%u, fchigh:%u, fclow:%u", (unsigned int)rfLen, (unsigned int)invert, (unsigned int)fchigh, (unsigned int)fclow);
|
|
PrintAndLog("%s decoded bitstream:",GetFSKType(fchigh,fclow,invert));
|
|
printDemodBuff();
|
|
}
|
|
|
|
return 1;
|
|
} else {
|
|
if (g_debugMode) PrintAndLog("no FSK data found");
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
//by marshmellow
|
|
//fsk raw demod and print binary
|
|
//takes 4 arguments - Clock, invert, fchigh, fclow
|
|
//defaults: clock = 50, invert=1, fchigh=10, fclow=8 (RF/10 RF/8 (fsk2a))
|
|
int CmdFSKrawdemod(const char *Cmd)
|
|
{
|
|
char cmdp = param_getchar(Cmd, 0);
|
|
if (strlen(Cmd) > 20 || cmdp == 'h' || cmdp == 'H') {
|
|
PrintAndLog("Usage: data rawdemod fs [clock] <invert> [fchigh] [fclow]");
|
|
PrintAndLog(" [set clock as integer] optional, omit for autodetect.");
|
|
PrintAndLog(" <invert>, 1 for invert output, can be used even if the clock is omitted");
|
|
PrintAndLog(" [fchigh], larger field clock length, omit for autodetect");
|
|
PrintAndLog(" [fclow], small field clock length, omit for autodetect");
|
|
PrintAndLog("");
|
|
PrintAndLog(" sample: data rawdemod fs = demod an fsk tag from GraphBuffer using autodetect");
|
|
PrintAndLog(" : data rawdemod fs 32 = demod an fsk tag from GraphBuffer using a clock of RF/32, autodetect fc");
|
|
PrintAndLog(" : data rawdemod fs 1 = demod an fsk tag from GraphBuffer using autodetect, invert output");
|
|
PrintAndLog(" : data rawdemod fs 32 1 = demod an fsk tag from GraphBuffer using a clock of RF/32, invert output, autodetect fc");
|
|
PrintAndLog(" : data rawdemod fs 64 0 8 5 = demod an fsk1 RF/64 tag from GraphBuffer");
|
|
PrintAndLog(" : data rawdemod fs 50 0 10 8 = demod an fsk2 RF/50 tag from GraphBuffer");
|
|
PrintAndLog(" : data rawdemod fs 50 1 10 8 = demod an fsk2a RF/50 tag from GraphBuffer");
|
|
return 0;
|
|
}
|
|
return FSKrawDemod(Cmd, true);
|
|
}
|
|
|
|
//by marshmellow
|
|
//attempt to psk1 demod graph buffer
|
|
int PSKDemod(const char *Cmd, bool verbose)
|
|
{
|
|
int invert=0;
|
|
int clk=0;
|
|
int maxErr=100;
|
|
sscanf(Cmd, "%i %i %i", &clk, &invert, &maxErr);
|
|
if (clk==1){
|
|
invert=1;
|
|
clk=0;
|
|
}
|
|
if (invert != 0 && invert != 1) {
|
|
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 0;
|
|
int errCnt=0;
|
|
int startIdx = 0;
|
|
errCnt = pskRawDemod_ext(BitStream, &BitLen, &clk, &invert, &startIdx);
|
|
if (errCnt > maxErr){
|
|
if (g_debugMode || verbose) PrintAndLog("Too many errors found, clk: %d, invert: %d, numbits: %d, errCnt: %d",clk,invert,BitLen,errCnt);
|
|
return 0;
|
|
}
|
|
if (errCnt<0|| BitLen<16){ //throw away static - allow 1 and -1 (in case of threshold command first)
|
|
if (g_debugMode || verbose) PrintAndLog("no data found, clk: %d, invert: %d, numbits: %d, errCnt: %d",clk,invert,BitLen,errCnt);
|
|
return 0;
|
|
}
|
|
if (verbose || g_debugMode){
|
|
PrintAndLog("\nUsing Clock:%d, invert:%d, Bits Found:%d",clk,invert,BitLen);
|
|
if (errCnt>0){
|
|
PrintAndLog("# Errors during Demoding (shown as 7 in bit stream): %d",errCnt);
|
|
}
|
|
}
|
|
//prime demod buffer for output
|
|
setDemodBuf(BitStream,BitLen,0);
|
|
setClockGrid(clk, startIdx);
|
|
|
|
return 1;
|
|
}
|
|
|
|
// by marshmellow
|
|
// takes 3 arguments - clock, invert, maxErr as integers
|
|
// attempts to demodulate nrz only
|
|
// prints binary found and saves in demodbuffer for further commands
|
|
int NRZrawDemod(const char *Cmd, bool verbose)
|
|
{
|
|
int invert=0;
|
|
int clk=0;
|
|
int maxErr=100;
|
|
sscanf(Cmd, "%i %i %i", &clk, &invert, &maxErr);
|
|
if (clk==1){
|
|
invert=1;
|
|
clk=0;
|
|
}
|
|
if (invert != 0 && invert != 1) {
|
|
PrintAndLog("Invalid argument: %s", Cmd);
|
|
return 0;
|
|
}
|
|
uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0};
|
|
size_t BitLen = getFromGraphBuf(BitStream);
|
|
if (BitLen==0) return 0;
|
|
int errCnt=0;
|
|
int clkStartIdx = 0;
|
|
errCnt = nrzRawDemod(BitStream, &BitLen, &clk, &invert, &clkStartIdx);
|
|
if (errCnt > maxErr){
|
|
if (g_debugMode) PrintAndLog("Too many errors found, clk: %d, invert: %d, numbits: %d, errCnt: %d",clk,invert,BitLen,errCnt);
|
|
return 0;
|
|
}
|
|
if (errCnt<0 || BitLen<16){ //throw away static - allow 1 and -1 (in case of threshold command first)
|
|
if (g_debugMode) PrintAndLog("no data found, clk: %d, invert: %d, numbits: %d, errCnt: %d",clk,invert,BitLen,errCnt);
|
|
return 0;
|
|
}
|
|
if (verbose || g_debugMode) PrintAndLog("Tried NRZ Demod using Clock: %d - invert: %d - Bits Found: %d",clk,invert,BitLen);
|
|
//prime demod buffer for output
|
|
setDemodBuf(BitStream,BitLen,0);
|
|
setClockGrid(clk, clkStartIdx);
|
|
|
|
|
|
if (errCnt>0 && (verbose || g_debugMode)) PrintAndLog("# Errors during Demoding (shown as 7 in bit stream): %d",errCnt);
|
|
if (verbose || g_debugMode) {
|
|
PrintAndLog("NRZ demoded bitstream:");
|
|
// Now output the bitstream to the scrollback by line of 16 bits
|
|
printDemodBuff();
|
|
}
|
|
return 1;
|
|
}
|
|
|
|
int CmdNRZrawDemod(const char *Cmd)
|
|
{
|
|
char cmdp = param_getchar(Cmd, 0);
|
|
if (strlen(Cmd) > 16 || cmdp == 'h' || cmdp == 'H') {
|
|
PrintAndLog("Usage: data rawdemod nr [clock] <0|1> [maxError]");
|
|
PrintAndLog(" [set clock as integer] optional, if not set, autodetect.");
|
|
PrintAndLog(" <invert>, 1 for invert output");
|
|
PrintAndLog(" [set maximum allowed errors], default = 100.");
|
|
PrintAndLog("");
|
|
PrintAndLog(" sample: data rawdemod nr = demod a nrz/direct tag from GraphBuffer");
|
|
PrintAndLog(" : data rawdemod nr 32 = demod a nrz/direct tag from GraphBuffer using a clock of RF/32");
|
|
PrintAndLog(" : data rawdemod nr 32 1 = demod a nrz/direct tag from GraphBuffer using a clock of RF/32 and inverting data");
|
|
PrintAndLog(" : data rawdemod nr 1 = demod a nrz/direct tag from GraphBuffer while inverting data");
|
|
PrintAndLog(" : data rawdemod nr 64 1 0 = demod a nrz/direct tag from GraphBuffer using a clock of RF/64, inverting data and allowing 0 demod errors");
|
|
return 0;
|
|
}
|
|
return NRZrawDemod(Cmd, true);
|
|
}
|
|
|
|
// by marshmellow
|
|
// takes 3 arguments - clock, invert, maxErr as integers
|
|
// attempts to demodulate psk only
|
|
// prints binary found and saves in demodbuffer for further commands
|
|
int CmdPSK1rawDemod(const char *Cmd)
|
|
{
|
|
int ans;
|
|
char cmdp = param_getchar(Cmd, 0);
|
|
if (strlen(Cmd) > 16 || cmdp == 'h' || cmdp == 'H') {
|
|
PrintAndLog("Usage: data rawdemod p1 [clock] <0|1> [maxError]");
|
|
PrintAndLog(" [set clock as integer] optional, if not set, autodetect.");
|
|
PrintAndLog(" <invert>, 1 for invert output");
|
|
PrintAndLog(" [set maximum allowed errors], default = 100.");
|
|
PrintAndLog("");
|
|
PrintAndLog(" sample: data rawdemod p1 = demod a psk1 tag from GraphBuffer");
|
|
PrintAndLog(" : data rawdemod p1 32 = demod a psk1 tag from GraphBuffer using a clock of RF/32");
|
|
PrintAndLog(" : data rawdemod p1 32 1 = demod a psk1 tag from GraphBuffer using a clock of RF/32 and inverting data");
|
|
PrintAndLog(" : data rawdemod p1 1 = demod a psk1 tag from GraphBuffer while inverting data");
|
|
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;
|
|
}
|
|
ans = PSKDemod(Cmd, true);
|
|
//output
|
|
if (!ans){
|
|
if (g_debugMode) PrintAndLog("Error demoding: %d",ans);
|
|
return 0;
|
|
}
|
|
|
|
PrintAndLog("PSK1 demoded bitstream:");
|
|
// Now output the bitstream to the scrollback by line of 16 bits
|
|
printDemodBuff();
|
|
return 1;
|
|
}
|
|
|
|
// by marshmellow
|
|
// takes same args as cmdpsk1rawdemod
|
|
int CmdPSK2rawDemod(const char *Cmd)
|
|
{
|
|
int ans=0;
|
|
char cmdp = param_getchar(Cmd, 0);
|
|
if (strlen(Cmd) > 16 || cmdp == 'h' || cmdp == 'H') {
|
|
PrintAndLog("Usage: data rawdemod p2 [clock] <0|1> [maxError]");
|
|
PrintAndLog(" [set clock as integer] optional, if not set, autodetect.");
|
|
PrintAndLog(" <invert>, 1 for invert output");
|
|
PrintAndLog(" [set maximum allowed errors], default = 100.");
|
|
PrintAndLog("");
|
|
PrintAndLog(" sample: data rawdemod p2 = demod a psk2 tag from GraphBuffer, autodetect clock");
|
|
PrintAndLog(" : data rawdemod p2 32 = demod a psk2 tag from GraphBuffer using a clock of RF/32");
|
|
PrintAndLog(" : data rawdemod p2 32 1 = demod a psk2 tag from GraphBuffer using a clock of RF/32 and inverting output");
|
|
PrintAndLog(" : data rawdemod p2 1 = demod a psk2 tag from GraphBuffer, autodetect clock and invert output");
|
|
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;
|
|
}
|
|
ans=PSKDemod(Cmd, true);
|
|
if (!ans){
|
|
if (g_debugMode) PrintAndLog("Error demoding: %d",ans);
|
|
return 0;
|
|
}
|
|
psk1TOpsk2(DemodBuffer, DemodBufferLen);
|
|
PrintAndLog("PSK2 demoded bitstream:");
|
|
// Now output the bitstream to the scrollback by line of 16 bits
|
|
printDemodBuff();
|
|
return 1;
|
|
}
|
|
|
|
// by marshmellow - combines all raw demod functions into one menu command
|
|
int CmdRawDemod(const char *Cmd)
|
|
{
|
|
char cmdp = Cmd[0]; //param_getchar(Cmd, 0);
|
|
|
|
if (strlen(Cmd) > 35 || cmdp == 'h' || cmdp == 'H' || strlen(Cmd)<2) {
|
|
PrintAndLog("Usage: data rawdemod [modulation] <help>|<options>");
|
|
PrintAndLog(" [modulation] as 2 char, 'ab' for ask/biphase, 'am' for ask/manchester, 'ar' for ask/raw, 'fs' for fsk, ...");
|
|
PrintAndLog(" 'nr' for nrz/direct, 'p1' for psk1, 'p2' for psk2");
|
|
PrintAndLog(" <help> as 'h', prints the help for the specific modulation");
|
|
PrintAndLog(" <options> see specific modulation help for optional parameters");
|
|
PrintAndLog("");
|
|
PrintAndLog(" sample: data rawdemod fs h = print help specific to fsk demod");
|
|
PrintAndLog(" : data rawdemod fs = demod GraphBuffer using: fsk - autodetect");
|
|
PrintAndLog(" : data rawdemod ab = demod GraphBuffer using: ask/biphase - autodetect");
|
|
PrintAndLog(" : data rawdemod am = demod GraphBuffer using: ask/manchester - autodetect");
|
|
PrintAndLog(" : data rawdemod ar = demod GraphBuffer using: ask/raw - autodetect");
|
|
PrintAndLog(" : data rawdemod nr = demod GraphBuffer using: nrz/direct - autodetect");
|
|
PrintAndLog(" : data rawdemod p1 = demod GraphBuffer using: psk1 - autodetect");
|
|
PrintAndLog(" : data rawdemod p2 = demod GraphBuffer using: psk2 - autodetect");
|
|
return 0;
|
|
}
|
|
char cmdp2 = Cmd[1];
|
|
int ans = 0;
|
|
if (cmdp == 'f' && cmdp2 == 's'){
|
|
ans = CmdFSKrawdemod(Cmd+2);
|
|
} else if(cmdp == 'a' && cmdp2 == 'b'){
|
|
ans = Cmdaskbiphdemod(Cmd+2);
|
|
} else if(cmdp == 'a' && cmdp2 == 'm'){
|
|
ans = Cmdaskmandemod(Cmd+2);
|
|
} else if(cmdp == 'a' && cmdp2 == 'r'){
|
|
ans = Cmdaskrawdemod(Cmd+2);
|
|
} else if(cmdp == 'n' && cmdp2 == 'r'){
|
|
ans = CmdNRZrawDemod(Cmd+2);
|
|
} else if(cmdp == 'p' && cmdp2 == '1'){
|
|
ans = CmdPSK1rawDemod(Cmd+2);
|
|
} else if(cmdp == 'p' && cmdp2 == '2'){
|
|
ans = CmdPSK2rawDemod(Cmd+2);
|
|
} else {
|
|
PrintAndLog("unknown modulation entered - see help ('h') for parameter structure");
|
|
}
|
|
return ans;
|
|
}
|
|
|
|
void setClockGrid(int clk, int offset) {
|
|
g_DemodStartIdx = offset;
|
|
g_DemodClock = clk;
|
|
if (g_debugMode) PrintAndLog("demodoffset %d, clk %d",offset,clk);
|
|
|
|
if (offset > clk) offset %= clk;
|
|
if (offset < 0) offset += clk;
|
|
|
|
if (offset > GraphTraceLen || offset < 0) return;
|
|
if (clk < 8 || clk > GraphTraceLen) {
|
|
GridLocked = false;
|
|
GridOffset = 0;
|
|
PlotGridX = 0;
|
|
PlotGridXdefault = 0;
|
|
RepaintGraphWindow();
|
|
} else {
|
|
GridLocked = true;
|
|
GridOffset = offset;
|
|
PlotGridX = clk;
|
|
PlotGridXdefault = clk;
|
|
RepaintGraphWindow();
|
|
}
|
|
}
|
|
|
|
int CmdGrid(const char *Cmd)
|
|
{
|
|
sscanf(Cmd, "%i %i", &PlotGridX, &PlotGridY);
|
|
PlotGridXdefault= PlotGridX;
|
|
PlotGridYdefault= PlotGridY;
|
|
RepaintGraphWindow();
|
|
return 0;
|
|
}
|
|
|
|
int CmdSetGraphMarkers(const char *Cmd) {
|
|
sscanf(Cmd, "%i %i", &CursorCPos, &CursorDPos);
|
|
RepaintGraphWindow();
|
|
return 0;
|
|
}
|
|
|
|
int CmdHexsamples(const char *Cmd)
|
|
{
|
|
int i, j;
|
|
int requested = 0;
|
|
int offset = 0;
|
|
char string_buf[25];
|
|
char* string_ptr = string_buf;
|
|
uint8_t got[BIGBUF_SIZE];
|
|
|
|
sscanf(Cmd, "%i %i", &requested, &offset);
|
|
|
|
/* if no args send something */
|
|
if (requested == 0) {
|
|
requested = 8;
|
|
}
|
|
if (offset + requested > sizeof(got)) {
|
|
PrintAndLog("Tried to read past end of buffer, <bytes> + <offset> > %d", BIGBUF_SIZE);
|
|
return 0;
|
|
}
|
|
|
|
GetFromBigBuf(got, requested, offset, NULL, -1, false);
|
|
|
|
i = 0;
|
|
for (j = 0; j < requested; j++) {
|
|
i++;
|
|
string_ptr += sprintf(string_ptr, "%02x ", got[j]);
|
|
if (i == 8) {
|
|
*(string_ptr - 1) = '\0'; // remove the trailing space
|
|
PrintAndLog("%s", string_buf);
|
|
string_buf[0] = '\0';
|
|
string_ptr = string_buf;
|
|
i = 0;
|
|
}
|
|
if (j == requested - 1 && string_buf[0] != '\0') { // print any remaining bytes
|
|
*(string_ptr - 1) = '\0';
|
|
PrintAndLog("%s", string_buf);
|
|
string_buf[0] = '\0';
|
|
}
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
int CmdHide(const char *Cmd)
|
|
{
|
|
HideGraphWindow();
|
|
return 0;
|
|
}
|
|
|
|
//zero mean GraphBuffer
|
|
int CmdHpf(const char *Cmd)
|
|
{
|
|
int i;
|
|
int accum = 0;
|
|
|
|
for (i = 10; i < GraphTraceLen; ++i)
|
|
accum += GraphBuffer[i];
|
|
accum /= (GraphTraceLen - 10);
|
|
for (i = 0; i < GraphTraceLen; ++i)
|
|
GraphBuffer[i] -= accum;
|
|
|
|
RepaintGraphWindow();
|
|
return 0;
|
|
}
|
|
|
|
uint8_t getByte(uint8_t bits_per_sample, BitstreamIn* b)
|
|
{
|
|
int i;
|
|
uint8_t val = 0;
|
|
for(i =0 ; i < bits_per_sample; i++)
|
|
{
|
|
val |= (headBit(b) << (7-i));
|
|
}
|
|
return val;
|
|
}
|
|
|
|
int getSamples(int n, bool silent)
|
|
{
|
|
//If we get all but the last byte in bigbuf,
|
|
// we don't have to worry about remaining trash
|
|
// in the last byte in case the bits-per-sample
|
|
// does not line up on byte boundaries
|
|
|
|
uint8_t got[BIGBUF_SIZE-1] = { 0 };
|
|
|
|
if (n == 0 || n > sizeof(got))
|
|
n = sizeof(got);
|
|
|
|
if (!silent) PrintAndLog("Reading %d bytes from device memory\n", n);
|
|
UsbCommand response;
|
|
GetFromBigBuf(got, n, 0, &response, -1, false);
|
|
if (!silent) PrintAndLog("Data fetched");
|
|
uint8_t bits_per_sample = 8;
|
|
|
|
//Old devices without this feature would send 0 at arg[0]
|
|
if(response.arg[0] > 0)
|
|
{
|
|
sample_config *sc = (sample_config *) response.d.asBytes;
|
|
if (!silent) PrintAndLog("Samples @ %d bits/smpl, decimation 1:%d ", sc->bits_per_sample
|
|
, sc->decimation);
|
|
bits_per_sample = sc->bits_per_sample;
|
|
}
|
|
if(bits_per_sample < 8)
|
|
{
|
|
if (!silent) PrintAndLog("Unpacking...");
|
|
BitstreamIn bout = { got, bits_per_sample * n, 0};
|
|
int j =0;
|
|
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;
|
|
}
|
|
GraphTraceLen = j;
|
|
PrintAndLog("Unpacked %d samples" , j );
|
|
}else
|
|
{
|
|
for (int j = 0; j < n; j++) {
|
|
GraphBuffer[j] = ((int)got[j]) - 128;
|
|
}
|
|
GraphTraceLen = n;
|
|
}
|
|
|
|
setClockGrid(0,0);
|
|
DemodBufferLen = 0;
|
|
RepaintGraphWindow();
|
|
return 0;
|
|
}
|
|
|
|
int CmdSamples(const char *Cmd)
|
|
{
|
|
int n = strtol(Cmd, NULL, 0);
|
|
return getSamples(n, false);
|
|
}
|
|
|
|
int CmdTuneSamples(const char *Cmd)
|
|
{
|
|
int timeout = 0, arg = FLAG_TUNE_ALL;
|
|
|
|
if(*Cmd == 'l') {
|
|
arg = FLAG_TUNE_LF;
|
|
} else if (*Cmd == 'h') {
|
|
arg = FLAG_TUNE_HF;
|
|
} else if (*Cmd != '\0') {
|
|
PrintAndLog("use 'tune' or 'tune l' or 'tune h'");
|
|
return 0;
|
|
}
|
|
|
|
printf("\nMeasuring antenna characteristics, please wait...");
|
|
|
|
UsbCommand c = {CMD_MEASURE_ANTENNA_TUNING, {arg, 0, 0}};
|
|
SendCommand(&c);
|
|
|
|
UsbCommand resp;
|
|
while(!WaitForResponseTimeout(CMD_MEASURED_ANTENNA_TUNING,&resp,1000)) {
|
|
timeout++;
|
|
printf(".");
|
|
if (timeout > 7) {
|
|
PrintAndLog("\nNo response from Proxmark. Aborting...");
|
|
return 1;
|
|
}
|
|
}
|
|
|
|
int peakv, peakf;
|
|
int vLf125, vLf134, vHf;
|
|
vLf125 = resp.arg[0] & 0xffff;
|
|
vLf134 = resp.arg[0] >> 16;
|
|
vHf = resp.arg[1] & 0xffff;;
|
|
peakf = resp.arg[2] & 0xffff;
|
|
peakv = resp.arg[2] >> 16;
|
|
PrintAndLog("");
|
|
if (arg & FLAG_TUNE_LF)
|
|
{
|
|
PrintAndLog("# LF antenna: %5.2f V @ 125.00 kHz", vLf125/500.0);
|
|
PrintAndLog("# LF antenna: %5.2f V @ 134.00 kHz", vLf134/500.0);
|
|
PrintAndLog("# LF optimal: %5.2f V @%9.2f kHz", peakv/500.0, 12000.0/(peakf+1));
|
|
}
|
|
if (arg & FLAG_TUNE_HF)
|
|
PrintAndLog("# HF antenna: %5.2f V @ 13.56 MHz", vHf/1000.0);
|
|
|
|
#define LF_UNUSABLE_V 3000
|
|
#define LF_MARGINAL_V 15000
|
|
#define HF_UNUSABLE_V 3200
|
|
#define HF_MARGINAL_V 8000
|
|
|
|
if (arg & FLAG_TUNE_LF)
|
|
{
|
|
if (peakv<<1 < LF_UNUSABLE_V)
|
|
PrintAndLog("# Your LF antenna is unusable.");
|
|
else if (peakv<<1 < LF_MARGINAL_V)
|
|
PrintAndLog("# Your LF antenna is marginal.");
|
|
}
|
|
if (arg & FLAG_TUNE_HF)
|
|
{
|
|
if (vHf < HF_UNUSABLE_V)
|
|
PrintAndLog("# Your HF antenna is unusable.");
|
|
else if (vHf < HF_MARGINAL_V)
|
|
PrintAndLog("# Your HF antenna is marginal.");
|
|
}
|
|
|
|
if (peakv<<1 >= LF_UNUSABLE_V) {
|
|
for (int i = 0; i < 256; i++) {
|
|
GraphBuffer[i] = resp.d.asBytes[i] - 128;
|
|
}
|
|
PrintAndLog("Displaying LF tuning graph. Divisor 89 is 134khz, 95 is 125khz.\n");
|
|
PrintAndLog("\n");
|
|
GraphTraceLen = 256;
|
|
ShowGraphWindow();
|
|
RepaintGraphWindow();
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
|
|
int CmdLoad(const char *Cmd)
|
|
{
|
|
char filename[FILE_PATH_SIZE] = {0x00};
|
|
int len = 0;
|
|
|
|
len = strlen(Cmd);
|
|
if (len > FILE_PATH_SIZE) len = FILE_PATH_SIZE;
|
|
memcpy(filename, Cmd, len);
|
|
|
|
FILE *f = fopen(filename, "r");
|
|
if (!f) {
|
|
PrintAndLog("couldn't open '%s'", filename);
|
|
return 0;
|
|
}
|
|
|
|
GraphTraceLen = 0;
|
|
char line[80];
|
|
while (fgets(line, sizeof (line), f)) {
|
|
GraphBuffer[GraphTraceLen] = atoi(line);
|
|
GraphTraceLen++;
|
|
}
|
|
fclose(f);
|
|
PrintAndLog("loaded %d samples", GraphTraceLen);
|
|
setClockGrid(0,0);
|
|
DemodBufferLen = 0;
|
|
RepaintGraphWindow();
|
|
return 0;
|
|
}
|
|
|
|
int CmdLtrim(const char *Cmd)
|
|
{
|
|
int ds = atoi(Cmd);
|
|
if (GraphTraceLen<=0) return 0;
|
|
for (int i = ds; i < GraphTraceLen; ++i)
|
|
GraphBuffer[i-ds] = GraphBuffer[i];
|
|
GraphTraceLen -= ds;
|
|
|
|
RepaintGraphWindow();
|
|
return 0;
|
|
}
|
|
|
|
// trim graph to input argument length
|
|
int CmdRtrim(const char *Cmd)
|
|
{
|
|
int ds = atoi(Cmd);
|
|
|
|
GraphTraceLen = ds;
|
|
|
|
RepaintGraphWindow();
|
|
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[i] = GraphBuffer[start+i];
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
|
|
int CmdNorm(const char *Cmd)
|
|
{
|
|
int i;
|
|
int max = INT_MIN, min = INT_MAX;
|
|
|
|
for (i = 10; i < GraphTraceLen; ++i) {
|
|
if (GraphBuffer[i] > max)
|
|
max = GraphBuffer[i];
|
|
if (GraphBuffer[i] < min)
|
|
min = GraphBuffer[i];
|
|
}
|
|
|
|
if (max != min) {
|
|
for (i = 0; i < GraphTraceLen; ++i) {
|
|
GraphBuffer[i] = ((long)(GraphBuffer[i] - ((max + min) / 2)) * 256) / (max - min);
|
|
//marshmelow: adjusted *1000 to *256 to make +/- 128 so demod commands still work
|
|
}
|
|
}
|
|
RepaintGraphWindow();
|
|
return 0;
|
|
}
|
|
|
|
int CmdPlot(const char *Cmd)
|
|
{
|
|
ShowGraphWindow();
|
|
return 0;
|
|
}
|
|
|
|
int CmdSave(const char *Cmd)
|
|
{
|
|
char filename[FILE_PATH_SIZE] = {0x00};
|
|
int len = 0;
|
|
|
|
len = strlen(Cmd);
|
|
if (len > FILE_PATH_SIZE) len = FILE_PATH_SIZE;
|
|
memcpy(filename, Cmd, len);
|
|
|
|
|
|
FILE *f = fopen(filename, "w");
|
|
if(!f) {
|
|
PrintAndLog("couldn't open '%s'", filename);
|
|
return 0;
|
|
}
|
|
int i;
|
|
for (i = 0; i < GraphTraceLen; i++) {
|
|
fprintf(f, "%d\n", GraphBuffer[i]);
|
|
}
|
|
fclose(f);
|
|
PrintAndLog("saved to '%s'", Cmd);
|
|
return 0;
|
|
}
|
|
|
|
int CmdScale(const char *Cmd)
|
|
{
|
|
CursorScaleFactor = atoi(Cmd);
|
|
if (CursorScaleFactor == 0) {
|
|
PrintAndLog("bad, can't have zero scale");
|
|
CursorScaleFactor = 1;
|
|
}
|
|
RepaintGraphWindow();
|
|
return 0;
|
|
}
|
|
|
|
int directionalThreshold(const int* in, int *out, size_t len, int8_t up, int8_t down)
|
|
{
|
|
int lastValue = in[0];
|
|
out[0] = 0; // Will be changed at the end, but init 0 as we adjust to last samples value if no threshold kicks in.
|
|
|
|
for (int i = 1; i < len; ++i) {
|
|
// Apply first threshold to samples heading up
|
|
if (in[i] >= up && in[i] > lastValue)
|
|
{
|
|
lastValue = out[i]; // Buffer last value as we overwrite it.
|
|
out[i] = 1;
|
|
}
|
|
// Apply second threshold to samples heading down
|
|
else if (in[i] <= down && in[i] < lastValue)
|
|
{
|
|
lastValue = out[i]; // Buffer last value as we overwrite it.
|
|
out[i] = -1;
|
|
}
|
|
else
|
|
{
|
|
lastValue = out[i]; // Buffer last value as we overwrite it.
|
|
out[i] = out[i-1];
|
|
}
|
|
}
|
|
out[0] = out[1]; // Align with first edited sample.
|
|
return 0;
|
|
}
|
|
|
|
int CmdDirectionalThreshold(const char *Cmd)
|
|
{
|
|
int8_t upThres = param_get8(Cmd, 0);
|
|
int8_t downThres = param_get8(Cmd, 1);
|
|
|
|
printf("Applying Up Threshold: %d, Down Threshold: %d\n", upThres, downThres);
|
|
|
|
directionalThreshold(GraphBuffer, GraphBuffer,GraphTraceLen, upThres, downThres);
|
|
RepaintGraphWindow();
|
|
return 0;
|
|
}
|
|
|
|
int CmdZerocrossings(const char *Cmd)
|
|
{
|
|
// Zero-crossings aren't meaningful unless the signal is zero-mean.
|
|
CmdHpf("");
|
|
|
|
int sign = 1;
|
|
int zc = 0;
|
|
int lastZc = 0;
|
|
|
|
for (int i = 0; i < GraphTraceLen; ++i) {
|
|
if (GraphBuffer[i] * sign >= 0) {
|
|
// No change in sign, reproduce the previous sample count.
|
|
zc++;
|
|
GraphBuffer[i] = lastZc;
|
|
} else {
|
|
// Change in sign, reset the sample count.
|
|
sign = -sign;
|
|
GraphBuffer[i] = lastZc;
|
|
if (sign > 0) {
|
|
lastZc = zc;
|
|
zc = 0;
|
|
}
|
|
}
|
|
}
|
|
|
|
RepaintGraphWindow();
|
|
return 0;
|
|
}
|
|
|
|
int usage_data_bin2hex(){
|
|
PrintAndLog("Usage: data bin2hex <binary_digits>");
|
|
PrintAndLog(" This function will ignore all characters not 1 or 0 (but stop reading on whitespace)");
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* @brief Utility for conversion via cmdline.
|
|
* @param Cmd
|
|
* @return
|
|
*/
|
|
int Cmdbin2hex(const char *Cmd)
|
|
{
|
|
int bg =0, en =0;
|
|
if(param_getptr(Cmd, &bg, &en, 0))
|
|
{
|
|
return usage_data_bin2hex();
|
|
}
|
|
//Number of digits supplied as argument
|
|
size_t length = en - bg +1;
|
|
size_t bytelen = (length+7) / 8;
|
|
uint8_t* arr = (uint8_t *) malloc(bytelen);
|
|
memset(arr, 0, bytelen);
|
|
BitstreamOut bout = { arr, 0, 0 };
|
|
|
|
for(; bg <= en ;bg++)
|
|
{
|
|
char c = Cmd[bg];
|
|
if( c == '1') pushBit(&bout, 1);
|
|
else if( c == '0') pushBit(&bout, 0);
|
|
else PrintAndLog("Ignoring '%c'", c);
|
|
}
|
|
|
|
if(bout.numbits % 8 != 0)
|
|
{
|
|
printf("[padded with %d zeroes]\n", 8-(bout.numbits % 8));
|
|
}
|
|
|
|
//Uses printf instead of PrintAndLog since the latter
|
|
// adds linebreaks to each printout - this way was more convenient since we don't have to
|
|
// allocate a string and write to that first...
|
|
for(size_t x = 0; x < bytelen ; x++)
|
|
{
|
|
printf("%02X", arr[x]);
|
|
}
|
|
printf("\n");
|
|
free(arr);
|
|
return 0;
|
|
}
|
|
|
|
int usage_data_hex2bin() {
|
|
PrintAndLog("Usage: data hex2bin <hex_digits>");
|
|
PrintAndLog(" This function will ignore all non-hexadecimal characters (but stop reading on whitespace)");
|
|
return 0;
|
|
|
|
}
|
|
|
|
int Cmdhex2bin(const char *Cmd)
|
|
{
|
|
int bg =0, en =0;
|
|
if(param_getptr(Cmd, &bg, &en, 0))
|
|
{
|
|
return usage_data_hex2bin();
|
|
}
|
|
|
|
|
|
while(bg <= en )
|
|
{
|
|
char x = Cmd[bg++];
|
|
// capitalize
|
|
if (x >= 'a' && x <= 'f')
|
|
x -= 32;
|
|
// convert to numeric value
|
|
if (x >= '0' && x <= '9')
|
|
x -= '0';
|
|
else if (x >= 'A' && x <= 'F')
|
|
x -= 'A' - 10;
|
|
else
|
|
continue;
|
|
|
|
//Uses printf instead of PrintAndLog since the latter
|
|
// adds linebreaks to each printout - this way was more convenient since we don't have to
|
|
// allocate a string and write to that first...
|
|
|
|
for(int i= 0 ; i < 4 ; ++i)
|
|
printf("%d",(x >> (3 - i)) & 1);
|
|
}
|
|
printf("\n");
|
|
|
|
return 0;
|
|
}
|
|
|
|
/* // example of FSK2 RF/50 Tones
|
|
static const int LowTone[] = {
|
|
1, 1, 1, 1, 1, -1, -1, -1, -1, -1,
|
|
1, 1, 1, 1, 1, -1, -1, -1, -1, -1,
|
|
1, 1, 1, 1, 1, -1, -1, -1, -1, -1,
|
|
1, 1, 1, 1, 1, -1, -1, -1, -1, -1,
|
|
1, 1, 1, 1, 1, -1, -1, -1, -1, -1
|
|
};
|
|
static const int HighTone[] = {
|
|
1, 1, 1, 1, 1, -1, -1, -1, -1, // note one extra 1 to padd due to 50/8 remainder (1/2 the remainder)
|
|
1, 1, 1, 1, -1, -1, -1, -1,
|
|
1, 1, 1, 1, -1, -1, -1, -1,
|
|
1, 1, 1, 1, -1, -1, -1, -1,
|
|
1, 1, 1, 1, -1, -1, -1, -1,
|
|
1, 1, 1, 1, -1, -1, -1, -1, -1, // note one extra -1 to padd due to 50/8 remainder
|
|
};
|
|
*/
|
|
void GetHiLoTone(int *LowTone, int *HighTone, int clk, int LowToneFC, int HighToneFC) {
|
|
int i,j=0;
|
|
int Left_Modifier = ((clk % LowToneFC) % 2) + ((clk % LowToneFC)/2);
|
|
int Right_Modifier = (clk % LowToneFC) / 2;
|
|
//int HighToneMod = clk mod HighToneFC;
|
|
int LeftHalfFCCnt = (LowToneFC % 2) + (LowToneFC/2); //truncate
|
|
int FCs_per_clk = clk/LowToneFC;
|
|
|
|
// need to correctly split up the clock to field clocks.
|
|
// First attempt uses modifiers on each end to make up for when FCs don't evenly divide into Clk
|
|
|
|
// start with LowTone
|
|
// set extra 1 modifiers to make up for when FC doesn't divide evenly into Clk
|
|
for (i = 0; i < Left_Modifier; i++) {
|
|
LowTone[i] = 1;
|
|
}
|
|
|
|
// loop # of field clocks inside the main clock
|
|
for (i = 0; i < (FCs_per_clk); i++) {
|
|
// loop # of samples per field clock
|
|
for (j = 0; j < LowToneFC; j++) {
|
|
LowTone[(i*LowToneFC)+Left_Modifier+j] = ( j < LeftHalfFCCnt ) ? 1 : -1;
|
|
}
|
|
}
|
|
|
|
int k;
|
|
// add last -1 modifiers
|
|
for (k = 0; k < Right_Modifier; k++) {
|
|
LowTone[((i-1)*LowToneFC)+Left_Modifier+j+k] = -1;
|
|
}
|
|
|
|
// now do hightone
|
|
Left_Modifier = ((clk % HighToneFC) % 2) + ((clk % HighToneFC)/2);
|
|
Right_Modifier = (clk % HighToneFC) / 2;
|
|
LeftHalfFCCnt = (HighToneFC % 2) + (HighToneFC/2); //truncate
|
|
FCs_per_clk = clk/HighToneFC;
|
|
|
|
for (i = 0; i < Left_Modifier; i++) {
|
|
HighTone[i] = 1;
|
|
}
|
|
|
|
// loop # of field clocks inside the main clock
|
|
for (i = 0; i < (FCs_per_clk); i++) {
|
|
// loop # of samples per field clock
|
|
for (j = 0; j < HighToneFC; j++) {
|
|
HighTone[(i*HighToneFC)+Left_Modifier+j] = ( j < LeftHalfFCCnt ) ? 1 : -1;
|
|
}
|
|
}
|
|
|
|
// add last -1 modifiers
|
|
for (k = 0; k < Right_Modifier; k++) {
|
|
PrintAndLog("(i-1)*HighToneFC+lm+j+k %i",((i-1)*HighToneFC)+Left_Modifier+j+k);
|
|
HighTone[((i-1)*HighToneFC)+Left_Modifier+j+k] = -1;
|
|
}
|
|
if (g_debugMode == 2) {
|
|
for ( i = 0; i < clk; i++) {
|
|
PrintAndLog("Low: %i, High: %i",LowTone[i],HighTone[i]);
|
|
}
|
|
}
|
|
}
|
|
|
|
//old CmdFSKdemod adapted by marshmellow
|
|
//converts FSK to clear NRZ style wave. (or demodulates)
|
|
int FSKToNRZ(int *data, int *dataLen, int clk, int LowToneFC, int HighToneFC) {
|
|
uint8_t ans=0;
|
|
if (clk == 0 || LowToneFC == 0 || HighToneFC == 0) {
|
|
int firstClockEdge=0;
|
|
ans = fskClocks((uint8_t *) &LowToneFC, (uint8_t *) &HighToneFC, (uint8_t *) &clk, false, &firstClockEdge);
|
|
if (g_debugMode > 1) {
|
|
PrintAndLog ("DEBUG FSKtoNRZ: detected clocks: fc_low %i, fc_high %i, clk %i, firstClockEdge %i, ans %u", LowToneFC, HighToneFC, clk, firstClockEdge, ans);
|
|
}
|
|
}
|
|
// currently only know fsk modulations with field clocks < 10 samples and > 4 samples. filter out to remove false positives (and possibly destroying ask/psk modulated waves...)
|
|
if (ans == 0 || clk == 0 || LowToneFC == 0 || HighToneFC == 0 || LowToneFC > 10 || HighToneFC < 4) {
|
|
if (g_debugMode > 1) {
|
|
PrintAndLog ("DEBUG FSKtoNRZ: no fsk clocks found");
|
|
}
|
|
return 0;
|
|
}
|
|
int LowTone[clk];
|
|
int HighTone[clk];
|
|
GetHiLoTone(LowTone, HighTone, clk, LowToneFC, HighToneFC);
|
|
|
|
int i, j;
|
|
|
|
// loop through ([all samples] - clk)
|
|
for (i = 0; i < *dataLen - clk; ++i) {
|
|
int lowSum = 0, highSum = 0;
|
|
|
|
// sum all samples together starting from this sample for [clk] samples for each tone (multiply tone value with sample data)
|
|
for (j = 0; j < clk; ++j) {
|
|
lowSum += LowTone[j] * data[i+j];
|
|
highSum += HighTone[j] * data[i + j];
|
|
}
|
|
// get abs( [average sample value per clk] * 100 ) (or a rolling average of sorts)
|
|
lowSum = abs(100 * lowSum / clk);
|
|
highSum = abs(100 * highSum / clk);
|
|
// save these back to buffer for later use
|
|
data[i] = (highSum << 16) | lowSum;
|
|
}
|
|
|
|
// now we have the abs( [average sample value per clk] * 100 ) for each tone
|
|
// loop through again [all samples] - clk - 16
|
|
// note why 16??? is 16 the largest FC? changed to LowToneFC as that should be the > fc
|
|
for(i = 0; i < *dataLen - clk - LowToneFC; ++i) {
|
|
int lowTot = 0, highTot = 0;
|
|
|
|
// sum a field clock width of abs( [average sample values per clk] * 100) for each tone
|
|
for (j = 0; j < LowToneFC; ++j) { //10 for fsk2
|
|
lowTot += (data[i + j] & 0xffff);
|
|
}
|
|
for (j = 0; j < HighToneFC; j++) { //8 for fsk2
|
|
highTot += (data[i + j] >> 16);
|
|
}
|
|
|
|
// subtract the sum of lowTone averages by the sum of highTone averages as it
|
|
// and write back the new graph value
|
|
data[i] = lowTot - highTot;
|
|
}
|
|
// update dataLen to what we put back to the data sample buffer
|
|
*dataLen -= (clk + LowToneFC);
|
|
return 0;
|
|
}
|
|
|
|
int usage_data_fsktonrz() {
|
|
PrintAndLog("Usage: data fsktonrz c <clock> l <fc_low> f <fc_high>");
|
|
PrintAndLog("Options: ");
|
|
PrintAndLog(" h This help");
|
|
PrintAndLog(" c <clock> enter the a clock (omit to autodetect)");
|
|
PrintAndLog(" l <fc_low> enter a field clock (omit to autodetect)");
|
|
PrintAndLog(" f <fc_high> enter a field clock (omit to autodetect)");
|
|
return 0;
|
|
}
|
|
|
|
int CmdFSKToNRZ(const char *Cmd) {
|
|
// take clk, fc_low, fc_high
|
|
// blank = auto;
|
|
bool errors = false;
|
|
int clk = 0;
|
|
char cmdp = 0;
|
|
int fc_low = 10, fc_high = 8;
|
|
while(param_getchar(Cmd, cmdp) != 0x00)
|
|
{
|
|
switch(param_getchar(Cmd, cmdp))
|
|
{
|
|
case 'h':
|
|
case 'H':
|
|
return usage_data_fsktonrz();
|
|
case 'C':
|
|
case 'c':
|
|
clk = param_get32ex(Cmd, cmdp+1, 0, 10);
|
|
cmdp += 2;
|
|
break;
|
|
case 'F':
|
|
case 'f':
|
|
fc_high = param_get32ex(Cmd, cmdp+1, 0, 10);
|
|
cmdp += 2;
|
|
break;
|
|
case 'L':
|
|
case 'l':
|
|
fc_low = param_get32ex(Cmd, cmdp+1, 0, 10);
|
|
cmdp += 2;
|
|
break;
|
|
default:
|
|
PrintAndLog("Unknown parameter '%c'", param_getchar(Cmd, cmdp));
|
|
errors = true;
|
|
break;
|
|
}
|
|
if(errors) break;
|
|
}
|
|
//Validations
|
|
if(errors) return usage_data_fsktonrz();
|
|
|
|
setClockGrid(0,0);
|
|
DemodBufferLen = 0;
|
|
int ans = FSKToNRZ(GraphBuffer, &GraphTraceLen, clk, fc_low, fc_high);
|
|
CmdNorm("");
|
|
RepaintGraphWindow();
|
|
return ans;
|
|
}
|
|
|
|
|
|
static command_t CommandTable[] =
|
|
{
|
|
{"help", CmdHelp, 1, "This help"},
|
|
{"askedgedetect", CmdAskEdgeDetect, 1, "[threshold] Adjust Graph for manual ask demod using the length of sample differences to detect the edge of a wave (use 20-45, def:25)"},
|
|
{"autocorr", CmdAutoCorr, 1, "[window length] [g] -- Autocorrelation over window - g to save back to GraphBuffer (overwrite)"},
|
|
{"biphaserawdecode",CmdBiphaseDecodeRaw,1, "[offset] [invert<0|1>] [maxErr] -- Biphase decode bin stream in DemodBuffer (offset = 0|1 bits to shift the decode start)"},
|
|
{"bin2hex", Cmdbin2hex, 1, "bin2hex <digits> -- Converts binary to hexadecimal"},
|
|
{"bitsamples", CmdBitsamples, 0, "Get raw samples as bitstring"},
|
|
{"buffclear", CmdBuffClear, 1, "Clear sample buffer and graph window"},
|
|
{"dec", CmdDec, 1, "Decimate samples"},
|
|
{"detectclock", CmdDetectClockRate, 1, "[modulation] Detect clock rate of wave in GraphBuffer (options: 'a','f','n','p' for ask, fsk, nrz, psk respectively)"},
|
|
{"fsktonrz", CmdFSKToNRZ, 1, "Convert fsk2 to nrz wave for alternate fsk demodulating (for weak fsk)"},
|
|
{"getbitstream", CmdGetBitStream, 1, "Convert GraphBuffer's >=1 values to 1 and <1 to 0"},
|
|
{"grid", CmdGrid, 1, "<x> <y> -- overlay grid on graph window, use zero value to turn off either"},
|
|
{"hexsamples", CmdHexsamples, 0, "<bytes> [<offset>] -- Dump big buffer as hex bytes"},
|
|
{"hex2bin", Cmdhex2bin, 1, "hex2bin <hexadecimal> -- Converts hexadecimal to binary"},
|
|
{"hide", CmdHide, 1, "Hide graph window"},
|
|
{"hpf", CmdHpf, 1, "Remove DC offset from trace"},
|
|
{"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)"},
|
|
{"printdemodbuffer",CmdPrintDemodBuff, 1, "[x] [o] <offset> [l] <length> -- print the data in the DemodBuffer - 'x' for hex output"},
|
|
{"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"},
|
|
{"dirthreshold", CmdDirectionalThreshold, 1, "<thres up> <thres down> -- Max rising higher up-thres/ Min falling lower down-thres, keep rest as prev."},
|
|
{"tune", CmdTuneSamples, 0, "Get hw tune samples for graph window"},
|
|
{"undec", CmdUndec, 1, "Un-decimate samples by 2"},
|
|
{"zerocrossings", CmdZerocrossings, 1, "Count time between zero-crossings"},
|
|
{NULL, NULL, 0, NULL}
|
|
};
|
|
|
|
int CmdData(const char *Cmd)
|
|
{
|
|
CmdsParse(CommandTable, Cmd);
|
|
return 0;
|
|
}
|
|
|
|
int CmdHelp(const char *Cmd)
|
|
{
|
|
CmdsHelp(CommandTable);
|
|
return 0;
|
|
}
|