mirror of
https://github.com/RfidResearchGroup/proxmark3.git
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226 lines
6.8 KiB
C
226 lines
6.8 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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// Main command parser entry point
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//-----------------------------------------------------------------------------
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#include <stdio.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include <string.h>
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#include "util_posix.h"
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#include "cmdparser.h"
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#include "proxmark3.h"
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#include "data.h"
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#include "usb_cmd.h"
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#include "ui.h"
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#include "cmdhf.h"
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#include "cmddata.h"
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#include "cmdhw.h"
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#include "cmdlf.h"
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#include "cmdmain.h"
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#include "util.h"
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#include "cmdscript.h"
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#include "cmdcrc.h"
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#include "cmdanalyse.h"
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unsigned int current_command = CMD_UNKNOWN;
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static int CmdHelp(const char *Cmd);
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static int CmdQuit(const char *Cmd);
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static int CmdRev(const char *Cmd);
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//For storing command that are received from the device
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#define CMD_BUFFER_SIZE 50
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static UsbCommand cmdBuffer[CMD_BUFFER_SIZE];
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//Points to the next empty position to write to
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static int cmd_head;//Starts as 0
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//Points to the position of the last unread command
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static int cmd_tail;//Starts as 0
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static command_t CommandTable[] =
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{
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{"help", CmdHelp, 1, "This help. Use '<command> help' for details of a particular command."},
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{"analyse", CmdAnalyse, 1, "{ Analyse bytes... }"},
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{"data", CmdData, 1, "{ Plot window / data buffer manipulation... }"},
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{"hf", CmdHF, 1, "{ High Frequency commands... }"},
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{"hw", CmdHW, 1, "{ Hardware commands... }"},
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{"lf", CmdLF, 1, "{ Low Frequency commands... }"},
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{"reveng", CmdRev, 1, "Crc calculations from the software reveng 1.44"},
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{"script", CmdScript, 1, "{ Scripting commands }"},
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{"quit", CmdQuit, 1, "Exit program"},
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{"exit", CmdQuit, 1, "Exit program"},
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{NULL, NULL, 0, NULL}
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};
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command_t* getTopLevelCommandTable()
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{
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return CommandTable;
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}
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int CmdHelp(const char *Cmd)
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{
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CmdsHelp(CommandTable);
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return 0;
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}
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int CmdQuit(const char *Cmd)
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{
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return 99;
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}
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int CmdRev(const char *Cmd)
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{
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CmdCrc(Cmd);
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return 0;
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}
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/**
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* @brief This method should be called when sending a new command to the pm3. In case any old
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* responses from previous commands are stored in the buffer, a call to this method should clear them.
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* A better method could have been to have explicit command-ACKS, so we can know which ACK goes to which
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* operation. Right now we'll just have to live with this.
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*/
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void clearCommandBuffer()
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{
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//This is a very simple operation
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cmd_tail = cmd_head;
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}
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/**
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* @brief storeCommand stores a USB command in a circular buffer
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* @param UC
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*/
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void storeCommand(UsbCommand *command)
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{
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if( ( cmd_head+1) % CMD_BUFFER_SIZE == cmd_tail)
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{
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//If these two are equal, we're about to overwrite in the
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// circular buffer.
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PrintAndLog("WARNING: Command buffer about to overwrite command! This needs to be fixed!");
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}
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//Store the command at the 'head' location
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UsbCommand* destination = &cmdBuffer[cmd_head];
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memcpy(destination, command, sizeof(UsbCommand));
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cmd_head = (cmd_head +1) % CMD_BUFFER_SIZE; //increment head and wrap
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}
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/**
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* @brief getCommand gets a command from an internal circular buffer.
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* @param response location to write command
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* @return 1 if response was returned, 0 if nothing has been received
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*/
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int getCommand(UsbCommand* response)
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{
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//If head == tail, there's nothing to read, or if we just got initialized
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if(cmd_head == cmd_tail) return 0;
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//Pick out the next unread command
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UsbCommand* last_unread = &cmdBuffer[cmd_tail];
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memcpy(response, last_unread, sizeof(UsbCommand));
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//Increment tail - this is a circular buffer, so modulo buffer size
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cmd_tail = (cmd_tail +1 ) % CMD_BUFFER_SIZE;
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return 1;
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}
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/**
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* Waits for a certain response type. This method waits for a maximum of
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* ms_timeout milliseconds for a specified response command.
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*@brief WaitForResponseTimeout
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* @param cmd command to wait for
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* @param response struct to copy received command into.
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* @param ms_timeout
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* @return true if command was returned, otherwise false
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*/
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bool WaitForResponseTimeout(uint32_t cmd, UsbCommand* response, size_t ms_timeout) {
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UsbCommand resp;
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if (response == NULL)
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response = &resp;
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// Wait until the command is received
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for ( size_t dm_seconds = 0; dm_seconds < ms_timeout/10; dm_seconds++ ) {
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while( getCommand(response) ) {
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if(response->cmd == cmd)
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return true;
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}
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msleep(10); // XXX ugh
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if (dm_seconds == 250) { // 2.5 seconds elapsed
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PrintAndLog("Waiting for a response from the proxmark...");
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PrintAndLog("Don't forget to cancel its operation first by pressing on the button");
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}
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}
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return false;
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}
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bool WaitForResponse(uint32_t cmd, UsbCommand* response) {
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return WaitForResponseTimeout(cmd, response, -1);
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}
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//-----------------------------------------------------------------------------
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// Entry point into our code: called whenever the user types a command and
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// then presses Enter, which the full command line that they typed.
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//-----------------------------------------------------------------------------
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int CommandReceived(char *Cmd) {
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return CmdsParse(CommandTable, Cmd);
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}
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//-----------------------------------------------------------------------------
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// Entry point into our code: called whenever we received a packet over USB
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// that we weren't necessarily expecting, for example a debug print.
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//-----------------------------------------------------------------------------
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void UsbCommandReceived(UsbCommand *UC)
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{
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switch(UC->cmd) {
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// First check if we are handling a debug message
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case CMD_DEBUG_PRINT_STRING: {
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char s[USB_CMD_DATA_SIZE+1];
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memset(s, 0x00, sizeof(s));
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size_t len = MIN(UC->arg[0],USB_CMD_DATA_SIZE);
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memcpy(s, UC->d.asBytes, len);
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// test
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if ( UC->arg[1] == CMD_MEASURE_ANTENNA_TUNING_HF) {
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printf("\r#db# %s", s);
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fflush(stdout);
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}
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else {
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PrintAndLog("#db# %s", s);
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}
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return;
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} break;
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case CMD_DEBUG_PRINT_INTEGERS: {
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PrintAndLog("#db# %08x, %08x, %08x", UC->arg[0], UC->arg[1], UC->arg[2]);
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break;
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}
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case CMD_DOWNLOADED_RAW_ADC_SAMPLES_125K:
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case CMD_DOWNLOADED_EML_BIGBUF: {
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// sample_buf is a array pointer, located in data.c
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// arg0 = offset in transfer. Startindex of this chunk
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// arg1 = length bytes to transfer
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// arg2 = bigbuff tracelength (?)
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uint32_t offset = UC->arg[0];
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uint32_t len = UC->arg[1];
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//uint32_t tracelen = UC->arg[2];
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memcpy( sample_buf + offset, UC->d.asBytes, len);
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//printf("ICE:: Download from device. chunk %" PRIu32 " | size %" PRIu32 " | tracelen:%" PRIu32 " \n", offset, len, UC->arg[2]);
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break;
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}
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default: {
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storeCommand(UC);
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break;
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}
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}
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}
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