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intelhexclass.cpp
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intelhexclass.cpp
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/*******************************************************************************
*
* INTEL HEX FILE CLASS MODULE
*
*******************************************************************************/
/******************************************************************************/
/*!
* \file intelhexclass.cpp
* \mainpage
* \image html intelhexclass.png
* \image latex intelhexclass.eps
* \section intro Introduction
* The Intel HEX File class module is designed to encode, decode and manipulate
* the content of Intel HEX format files commonly generated by most toolchains
* for embedded processors and microcontrollers.
*
* It uses standard C++ streams to decode files and store them in memory, and
* encode data stored in memory back into an Intel HEX format file. Once the file
* content is in memory, the content can then be manipulated using the available
* API.
*
* With this class it is possible to create tools that can compare Intel HEX
* files, fill empty space with desired values, splice two or more files
* together to name a few possibilities.
*
* \section contactInfo Contact Information
* For more information and the latest release, please visit this projects home
* page at http://codinghead.github.com/Intel-HEX-Class
* To participate in the project or for other enquiries, please contact Stuart
* Cording at codinghead@gmail.com
*
* \section license Licensing Information
* Copyright (c) 2012 Stuart Cording
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*
* \section imageInfo Image Information
* Image chosen for this project comes from 'Henkster'. Original image is from
* http://www.sxc.hu/photo/504350 on stock.xchng.
*
* \author Stuart Cording aka CODINGHEAD
*
********************************************************************************
* \note
* No notes to date (19th Jan 2012)
*******************************************************************************/
#include <iostream>
#include <string>
#include <vector>
#ifdef _MSC_FULL_VER
#include <stdio.h>
#else
#include <cstdio>
#endif
#include "intelhexclass.h"
using namespace std;
/******************************************************************************/
/*! Possible record types for Intel HEX file.
*
* List of all possible record types that can be found in an Intel HEX file.
*******************************************************************************/
enum intelhexRecordType {
DATA_RECORD,
END_OF_FILE_RECORD,
EXTENDED_SEGMENT_ADDRESS,
START_SEGMENT_ADDRESS,
EXTENDED_LINEAR_ADDRESS,
START_LINEAR_ADDRESS,
NO_OF_RECORD_TYPES
};
/*******************************************************************************
* Converts a 2 char string to its HEX value
*******************************************************************************/
unsigned char intelhex::stringToHex(string value)
{
unsigned char returnValue = 0;
string::iterator valueIterator;
if(value.length() == 2)
{
valueIterator = value.begin();
for (int x=0; x < 2; x++)
{
/* Shift result variable 4 bits to the left */
returnValue <<= 4;
if (*valueIterator >= '0' && *valueIterator <= '9')
{
returnValue +=
static_cast<unsigned char>(*valueIterator - '0');
}
else if (*valueIterator >= 'A' && *valueIterator <= 'F')
{
returnValue +=
static_cast<unsigned char>(*valueIterator - 'A' + 10);
}
else if (*valueIterator >= 'a' && *valueIterator <= 'f')
{
returnValue +=
static_cast<unsigned char>(*valueIterator - 'a' + 10);
}
else
{
/* Error occured - non-HEX value found */
string message;
message = "Can't convert byte 0x" + value + " @ 0x" +
ulToHexString(segmentBaseAddress) + " to hex.";
addError(message);
returnValue = 0;
}
/* Iterate to next char in the string */
++valueIterator;
}
}
else
{
/* Error occured - more or less than two nibbles in the string */
string message;
message = value + " @ 0x" + ulToHexString(segmentBaseAddress) +
" isn't an 8-bit value.";
addError(message);
}
return returnValue;
}
/*******************************************************************************
* Converts an unsigned long to a string in HEX format
*******************************************************************************/
string intelhex::ulToHexString(unsigned long value)
{
string returnString;
char localString[50];
returnString.erase();
#ifdef _MSC_FULL_VER
sprintf_s(localString, 49, "%08lX", value);
#else
snprintf(localString, 49, "%08lX", value);
#endif
returnString.insert(0, localString);
return returnString;
}
/*******************************************************************************
* Converts an unsigned long to a string in DEC format
*******************************************************************************/
string intelhex::ulToString(unsigned long value)
{
string returnString;
char localString[50];
returnString.erase();
#ifdef _MSC_FULL_VER
sprintf_s(localString, 49, "%lu", value);
#else
snprintf(localString, 49, "%lu", value);
#endif
returnString.insert(0, localString);
return returnString;
}
/*******************************************************************************
* Converts an unsigned char to a string in HEX format
*******************************************************************************/
string intelhex::ucToHexString(unsigned char value)
{
string returnString;
char localString[50];
returnString.erase();
#ifdef _MSC_FULL_VER
sprintf_s(localString, 49, "%02X", value);
#else
snprintf(localString, 49, "%02X", value);
#endif
returnString.insert(0, localString);
return returnString;
}
/*******************************************************************************
* Adds a warning to the list of warning messages
*******************************************************************************/
void intelhex::addWarning(string warningMessage)
{
string localMessage;
/* Build the message and push the warning message onto the list */
localMessage += ulToString(msgWarning.noOfWarnings + 1) + " Warning: "
+ warningMessage;
msgWarning.ihWarnings.push_back(localMessage);
/* Update the number of warning messages */
msgWarning.noOfWarnings = msgWarning.ihWarnings.size();
}
/*******************************************************************************
* Adds an error to the list of error messages
*******************************************************************************/
void intelhex::addError(string errorMessage)
{
string localMessage;
/* Build the message and push the error message onto the list */
localMessage += ulToString(msgError.noOfErrors + 1) + " Error: "
+ errorMessage;
msgError.ihErrors.push_back(localMessage);
/* Update the number of error messages */
msgError.noOfErrors = msgError.ihErrors.size();
}
/*******************************************************************************
* Decodes a data record read in from a file
*******************************************************************************/
void intelhex::decodeDataRecord(unsigned char recordLength,
unsigned long loadOffset,
string::const_iterator data)
{
/* Variable to store a byte of the record as a two char string */
string sByteRead;
/* Variable to store the byte of the record as an u.char */
unsigned char byteRead;
/* Calculate new SBA by clearing the low four bytes and then adding the */
/* current loadOffset for this line of Intel HEX data */
segmentBaseAddress &= ~(0xFFFFUL);
segmentBaseAddress += loadOffset;
for (unsigned char x = 0; x < recordLength; x ++)
{
sByteRead.erase();
sByteRead = *data;
data++;
sByteRead += *data;
data++;
byteRead = stringToHex(sByteRead);
ihReturn=ihContent.insert(
pair<int,unsigned char>(segmentBaseAddress, byteRead));
if (ihReturn.second==false)
{
/* If this address already contains the byte we are trying to */
/* write, this is only a warning */
if (ihReturn.first->second == byteRead)
{
string message;
message = "Location 0x" + ulToHexString(segmentBaseAddress) +
" already contains data 0x" + sByteRead;
addWarning(message);
}
/* Otherwise this is an error */
else
{
string message;
message = "Couldn't add 0x" + sByteRead + " @ 0x" +
ulToHexString(segmentBaseAddress) +
"; already contains 0x" +
ucToHexString(ihReturn.first->second);
addError(message);
}
}
/* Increment the segment base address */
++segmentBaseAddress;
}
}
/*******************************************************************************
* Input Stream for Intel HEX File Decoding (friend function)
*******************************************************************************/
istream& operator>>(istream& dataIn, intelhex& ihLocal)
{
// Create a string to store lines of Intel Hex info
string ihLine;
/* Create a string to store a single byte of Intel HEX info */
string ihByte;
// Create an iterator for this variable
string::iterator ihLineIterator;
// Create a line counter
unsigned long lineCounter = 0;
// Variable to hold a single byte (two chars) of data
unsigned char byteRead;
// Variable to calculate the checksum for each line
unsigned char intelHexChecksum;
// Variable to hold the record length
unsigned char recordLength;
// Variable to hold the load offset
unsigned long loadOffset;
// Variables to hold the record type
intelhexRecordType recordType;
do
{
/* Clear the string before this next round */
ihLine.erase();
/* Clear the checksum before processing this line */
intelHexChecksum = 0;
/* Get a line of data */
dataIn >> ihLine;
/* If the line contained some data, process it */
if (ihLine.length() > 0)
{
/* Increment line counter */
lineCounter++;
/* Set string iterator to start of string */
ihLineIterator = ihLine.begin();
/* Check that we have a ':' record mark at the beginning */
if (*ihLineIterator != ':')
{
/* Add some warning code here */
string message;
message = "Line without record mark ':' found @ line " +
ihLocal.ulToString(lineCounter);
ihLocal.addWarning(message);
/* If this is the first line, let's simply give up. Chances */
/* are this is not an Intel HEX file at all */
if (lineCounter == 1)
{
message = "Intel HEX File decode aborted; ':' missing in " \
"first line.";
ihLocal.addError(message);
/* Erase ihLine content and break out of do...while loop */
ihLine.erase();
break;
}
}
else
{
/* Remove the record mark from the string as we don't need it */
/* anymore */
ihLine.erase(ihLineIterator);
}
/* Run through the whole line to check the checksum */
for (ihLineIterator = ihLine.begin();
ihLineIterator != ihLine.end();
/* Nothing - really! */ )
{
/* Convert the line in pair of chars (making a single byte) */
/* into single bytes, and then add to the checksum variable. */
/* By adding all the bytes in a line together *including* the */
/* checksum byte, we should get a result of '0' at the end. */
/* If not, there is a checksum error */
ihByte.erase();
ihByte = *ihLineIterator;
++ihLineIterator;
/* Just in case there are an odd number of chars in the */
/* just check we didn't reach the end of the string early */
if (ihLineIterator != ihLine.end())
{
ihByte += *ihLineIterator;
++ihLineIterator;
byteRead = ihLocal.stringToHex(ihByte);
intelHexChecksum += byteRead;
}
else
{
string message;
message = "Odd number of characters in line " +
ihLocal.ulToString(lineCounter);
ihLocal.addError(message);
}
}
/* Make sure the checksum was ok */
if (intelHexChecksum == 0)
{
/* Reset iterator back to beginning of the line so we can now */
/* decode it */
ihLineIterator = ihLine.begin();
/* Clear all the variables associated with decoding a line of */
/* Intel HEX code. */
recordLength = 0;
loadOffset = 0;
/* Get the record length */
ihByte.erase();
ihByte = *ihLineIterator;
++ihLineIterator;
ihByte += *ihLineIterator;
++ihLineIterator;
recordLength = ihLocal.stringToHex(ihByte);
/* Get the load offset (2 bytes) */
ihByte.erase();
ihByte = *ihLineIterator;
++ihLineIterator;
ihByte += *ihLineIterator;
++ihLineIterator;
loadOffset =
static_cast<unsigned long>(ihLocal.stringToHex(ihByte));
loadOffset <<= 8;
ihByte.erase();
ihByte = *ihLineIterator;
++ihLineIterator;
ihByte += *ihLineIterator;
++ihLineIterator;
loadOffset +=
static_cast<unsigned long>(ihLocal.stringToHex(ihByte));
/* Get the record type */
ihByte.erase();
ihByte = *ihLineIterator;
++ihLineIterator;
ihByte += *ihLineIterator;
++ihLineIterator;
recordType =
static_cast<intelhexRecordType>(ihLocal.stringToHex(ihByte));
/* Decode the INFO or DATA portion of the record */
switch (recordType)
{
case DATA_RECORD:
ihLocal.decodeDataRecord(recordLength, loadOffset,
ihLineIterator);
if (ihLocal.verbose == true)
{
cout << "Data Record begining @ 0x" <<
ihLocal.ulToHexString(loadOffset) << endl;
}
break;
case END_OF_FILE_RECORD:
/* Check that the EOF record wasn't already found. If */
/* it was, generate appropriate error */
if (ihLocal.foundEof == false)
{
ihLocal.foundEof = true;
}
else
{
string message;
message = "Additional End Of File record @ line " +
ihLocal.ulToString(lineCounter) +
" found.";
ihLocal.addError(message);
}
/* Generate error if there were */
if (ihLocal.verbose == true)
{
cout << "End of File" << endl;
}
break;
case EXTENDED_SEGMENT_ADDRESS:
/* Make sure we have 2 bytes of data */
if (recordLength == 2)
{
/* Extract the two bytes of the ESA */
unsigned long extSegAddress = 0;
ihByte.erase();
ihByte = *ihLineIterator;
++ihLineIterator;
ihByte += *ihLineIterator;
++ihLineIterator;
extSegAddress = static_cast<unsigned long>
(ihLocal.stringToHex(ihByte));
extSegAddress <<= 8;
ihByte.erase();
ihByte = *ihLineIterator;
++ihLineIterator;
ihByte += *ihLineIterator;
++ihLineIterator;
extSegAddress += static_cast<unsigned long>
(ihLocal.stringToHex(ihByte));
/* ESA is bits 4-19 of the segment base address */
/* (SBA), so shift left 4 bits */
extSegAddress <<= 4;
/* Update the SBA */
ihLocal.segmentBaseAddress = extSegAddress;
}
else
{
/* Note the error */
string message;
message = "Extended Segment Address @ line " +
ihLocal.ulToString(lineCounter) +
" not 2 bytes as required.";
ihLocal.addError(message);
}
if (ihLocal.verbose == true)
{
cout << "Ext. Seg. Address found: 0x" <<
ihLocal.ulToHexString(ihLocal.segmentBaseAddress)
<< endl;
}
break;
case START_SEGMENT_ADDRESS:
/* Make sure we have 4 bytes of data, and that no */
/* Start Segment Address has been found to date */
if (recordLength == 4 &&
ihLocal.startSegmentAddress.exists == false)
{
/* Note that the Start Segment Address has been */
/* found. */
ihLocal.startSegmentAddress.exists = true;
/* Clear the two registers, just in case */
ihLocal.startSegmentAddress.csRegister = 0;
ihLocal.startSegmentAddress.ipRegister = 0;
ihByte.erase();
ihByte = *ihLineIterator;
++ihLineIterator;
ihByte += *ihLineIterator;
++ihLineIterator;
ihLocal.startSegmentAddress.csRegister =
static_cast<unsigned long>
(ihLocal.stringToHex(ihByte));
ihLocal.startSegmentAddress.csRegister <<= 8;
ihByte.erase();
ihByte = *ihLineIterator;
++ihLineIterator;
ihByte += *ihLineIterator;
++ihLineIterator;
ihLocal.startSegmentAddress.csRegister +=
static_cast<unsigned long>
(ihLocal.stringToHex(ihByte));
ihByte.erase();
ihByte = *ihLineIterator;
++ihLineIterator;
ihByte += *ihLineIterator;
++ihLineIterator;
ihLocal.startSegmentAddress.ipRegister =
static_cast<unsigned long>
(ihLocal.stringToHex(ihByte));
ihLocal.startSegmentAddress.ipRegister <<= 8;
ihByte.erase();
ihByte = *ihLineIterator;
++ihLineIterator;
ihByte += *ihLineIterator;
++ihLineIterator;
ihLocal.startSegmentAddress.ipRegister +=
static_cast<unsigned long>
(ihLocal.stringToHex(ihByte));
}
/* Note an error if the start seg. address already */
/* exists */
else if (ihLocal.startSegmentAddress.exists == true)
{
string message;
message = "Start Segment Address record appears again @ line " +
ihLocal.ulToString(lineCounter) +
"; repeated record ignored.";
ihLocal.addError(message);
}
/* Note an error if the start lin. address already */
/* exists as they should be mutually exclusive */
if (ihLocal.startLinearAddress.exists == true)
{
string message;
message = "Start Segment Address record found @ line " +
ihLocal.ulToString(lineCounter) +
" but Start Linear Address already exists.";
ihLocal.addError(message);
}
/* Note an error if the record lenght is not 4 as */
/* expected */
if (recordLength != 4)
{
string message;
message = "Start Segment Address @ line " +
ihLocal.ulToString(lineCounter) +
" not 4 bytes as required.";
ihLocal.addError(message);
}
if (ihLocal.verbose == true)
{
cout << "Start Seg. Address - CS 0x" <<
ihLocal.ulToHexString(ihLocal.startSegmentAddress.csRegister) <<
" IP 0x" <<
ihLocal.ulToHexString(ihLocal.startSegmentAddress.ipRegister)
<< endl;
}
break;
case EXTENDED_LINEAR_ADDRESS:
/* Make sure we have 2 bytes of data */
if (recordLength == 2)
{
/* Extract the two bytes of the ELA */
unsigned long extLinAddress = 0;
ihByte.erase();
ihByte = *ihLineIterator;
++ihLineIterator;
ihByte += *ihLineIterator;
++ihLineIterator;
extLinAddress = static_cast<unsigned long>
(ihLocal.stringToHex(ihByte));
extLinAddress <<= 8;
ihByte.erase();
ihByte = *ihLineIterator;
++ihLineIterator;
ihByte += *ihLineIterator;
++ihLineIterator;
extLinAddress += static_cast<unsigned long>
(ihLocal.stringToHex(ihByte));
/* ELA is bits 16-31 of the segment base address */
/* (SBA), so shift left 16 bits */
extLinAddress <<= 16;
/* Update the SBA */
ihLocal.segmentBaseAddress = extLinAddress;
}
else
{
/* Note the error */
//cout << "Error in Ext. Lin. Address" << endl;
string message;
message = "Extended Linear Address @ line " +
ihLocal.ulToString(lineCounter) +
" not 2 bytes as required.";
ihLocal.addError(message);
}
if (ihLocal.verbose == true)
{
cout << "Ext. Lin. Address 0x" <<
ihLocal.ulToHexString(ihLocal.segmentBaseAddress)
<< endl;
}
break;
case START_LINEAR_ADDRESS:
/* Make sure we have 4 bytes of data */
if (recordLength == 4 &&
ihLocal.startLinearAddress.exists == false)
{
/* Extract the four bytes of the SLA */
ihLocal.startLinearAddress.eipRegister = 0;
ihByte.erase();
ihByte = *ihLineIterator;
++ihLineIterator;
ihByte += *ihLineIterator;
++ihLineIterator;
ihLocal.startLinearAddress.eipRegister =
static_cast<unsigned long>
(ihLocal.stringToHex(ihByte));
ihLocal.startLinearAddress.eipRegister <<= 8;
ihByte.erase();
ihByte = *ihLineIterator;
++ihLineIterator;
ihByte += *ihLineIterator;
++ihLineIterator;
ihLocal.startLinearAddress.eipRegister +=
static_cast<unsigned long>
(ihLocal.stringToHex(ihByte));
ihLocal.startLinearAddress.eipRegister <<= 8;
ihByte.erase();
ihByte = *ihLineIterator;
++ihLineIterator;
ihByte += *ihLineIterator;
++ihLineIterator;
ihLocal.startLinearAddress.eipRegister +=
static_cast<unsigned long>
(ihLocal.stringToHex(ihByte));
ihLocal.startLinearAddress.eipRegister <<= 8;
ihByte.erase();
ihByte = *ihLineIterator;
++ihLineIterator;
ihByte += *ihLineIterator;
++ihLineIterator;
ihLocal.startLinearAddress.eipRegister +=
static_cast<unsigned long>
(ihLocal.stringToHex(ihByte));
}
/* Note an error if the start seg. address already */
/* exists */
else if (ihLocal.startLinearAddress.exists == true)
{
string message;
message = "Start Linear Address record appears again @ line " +
ihLocal.ulToString(lineCounter) +
"; repeated record ignored.";
ihLocal.addError(message);
}
/* Note an error if the start seg. address already */
/* exists as they should be mutually exclusive */
if (ihLocal.startSegmentAddress.exists == true)
{
string message;
message = "Start Linear Address record found @ line " +
ihLocal.ulToString(lineCounter) +
" but Start Segment Address already exists.";
ihLocal.addError(message);
}
/* Note an error if the record lenght is not 4 as */
/* expected */
if (recordLength != 4)
{
string message;
message = "Start Linear Address @ line " +
ihLocal.ulToString(lineCounter) +
" not 4 bytes as required.";
ihLocal.addError(message);
}
if (ihLocal.verbose == true)
{
cout << "Start Lin. Address - EIP 0x" <<
ihLocal.ulToHexString(ihLocal.startLinearAddress.eipRegister)
<< endl;
}
break;
default:
/* Handle the error here */
if (ihLocal.verbose == true)
{
cout << "Unknown Record @ line " <<
ihLocal.ulToString(lineCounter) << endl;
}
string message;
message = "Unknown Intel HEX record @ line " +
ihLocal.ulToString(lineCounter);
ihLocal.addError(message);
break;
}
}
else
{
/* Note that the checksum contained an error */
string message;
message = "Checksum error @ line " +
ihLocal.ulToString(lineCounter) +
"; calculated 0x" +
ihLocal.ucToHexString(intelHexChecksum - byteRead) +
" expected 0x" +
ihLocal.ucToHexString(byteRead);
ihLocal.addError(message);
}
}
} while (ihLine.length() > 0);
if (ihLocal.verbose == true)
{
cout << "Decoded " << lineCounter << " lines from file." << endl;
}
return(dataIn);
}
/*******************************************************************************
* Output Stream for Intel HEX File Encoding (friend function)
*******************************************************************************/
ostream& operator<<(ostream& dataOut, intelhex& ihLocal)
{
/* Stores the address offset needed by the linear/segment address records */
unsigned long addressOffset;
/* Iterator into the ihContent - where the addresses & data are stored */
map<unsigned long, unsigned char>::iterator ihIterator;
/* Holds string that represents next record to be written */
string thisRecord;
/* Checksum calculation variable */
unsigned char checksum;
thisRecord.clear();
/* Check that there is some content to encode */
if (ihLocal.ihContent.size() > 0)
{
/* Calculate the Linear/Segment address */
ihIterator = ihLocal.ihContent.begin();
addressOffset = (*ihIterator).first;
checksum = 0;
/* Construct the first record to define the segment base address */
if (ihLocal.segmentAddressMode == false)
{
unsigned char dataByte;
addressOffset >>= 16;
thisRecord = ":02000004";
checksum = 0x02 + 0x04;
dataByte = static_cast<unsigned char>(addressOffset & 0xFF);
checksum += dataByte;
thisRecord += ihLocal.ucToHexString(dataByte);
dataByte = static_cast<unsigned char>((addressOffset >> 8) & 0xFF);
checksum += dataByte;
thisRecord += ihLocal.ucToHexString(dataByte);
thisRecord += ihLocal.ucToHexString(0x00 - (checksum & 0xFF));
}
else
{
unsigned char dataByte;
addressOffset >>= 4;
thisRecord = ":02000002";
checksum = 0x02 + 0x02;
dataByte = static_cast<unsigned char>(addressOffset & 0xFF);
checksum += dataByte;
thisRecord += ihLocal.ucToHexString(dataByte);
dataByte = static_cast<unsigned char>((addressOffset >> 8) & 0xFF);
checksum += dataByte;
thisRecord += ihLocal.ucToHexString(dataByte);
thisRecord += ihLocal.ucToHexString(0x00 - (checksum & 0xFF));
}
/* Output the record */
dataOut << thisRecord << endl;
/* Now loop through all the available data and insert into file */
/* with maximum 16 bytes per line, and making sure to keep the */
/* segment base address up to date */
vector<unsigned char> recordData;
unsigned long previousAddress;
unsigned long currentAddress;
unsigned long loadOffset;
while(ihIterator != ihLocal.ihContent.end())
{
/* Check to see if we need to start a new linear/segment section */
loadOffset = (*ihIterator).first;
/* If we are using the linear mode... */
if (ihLocal.segmentAddressMode == false)
{
if ((loadOffset >> 16) != addressOffset)
{
unsigned char dataByte;
thisRecord.clear();
checksum = 0;
addressOffset = loadOffset;
addressOffset >>= 16;
thisRecord = ":02000004";
checksum = 0x02 + 0x04;
dataByte = static_cast<unsigned char>(addressOffset & 0xFF);
checksum += dataByte;
thisRecord += ihLocal.ucToHexString(dataByte);
dataByte = static_cast<unsigned char>((addressOffset >> 8) & 0xFF);
checksum += dataByte;
thisRecord += ihLocal.ucToHexString(dataByte);
thisRecord += ihLocal.ucToHexString(0x00 - (checksum & 0xFF));
/* Output the record */
dataOut << thisRecord << endl;
}
}
/* ...otherwise assume segment mode */
else
{
if ((loadOffset >> 4) != addressOffset)
{
unsigned char dataByte;
thisRecord.clear();
checksum = 0;
addressOffset = loadOffset;
addressOffset >>= 4;
thisRecord = ":02000002";
checksum = 0x02 + 0x02;
dataByte = static_cast<unsigned char>(addressOffset & 0xFF);
checksum += dataByte;
thisRecord += ihLocal.ucToHexString(dataByte);
dataByte = static_cast<unsigned char>((addressOffset >> 8) & 0xFF);
checksum += dataByte;
thisRecord += ihLocal.ucToHexString(dataByte);
thisRecord += ihLocal.ucToHexString(0x00 - (checksum & 0xFF));
/* Output the record */
dataOut << thisRecord << endl;
}
}
/* Prepare for encoding next data record */
thisRecord.clear();
checksum = 0;
recordData.clear();
/* We need to check where the data actually starts, but only the */
/* bottom 16-bits; the other bits are in the segment/linear */
/* address record */
loadOffset = (*ihIterator).first & 0xFFFF;
/* Loop through and collect up to 16 bytes of data */
for (int x = 0; x < 16; x++)
{
currentAddress = (*ihIterator).first & 0xFFFF;
recordData.push_back((*ihIterator).second);
ihIterator++;
/* Check that we haven't run out of data */
if (ihIterator == ihLocal.ihContent.end())