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#include "mcuHexBin.h"
#include <stdio.h>
#include <stdbool.h>
#include <string.h>
#include <algorithm>
#include <vector>
#include <iostream>
using namespace std;
typedef struct
{
unsigned long m_startAddress;
std::vector<unsigned char> m_bytes;
} MemBlock;
int MCU_HEX2BIN(const char* filename, const uint16_t limit, uint8_t *binImage, uint16_t *imgSize)
{
vector<MemBlock> m_chunks;
unsigned long m_top;
FILE* m_file = fopen(filename, "r");
if (m_file == NULL)
{
printf("File not found: %s\n", filename);
return -1;
}
memset(binImage, 0, limit);
const uint16_t cMaxLineLen = 1024;
char szLine[cMaxLineLen];
bool endSeen = false;
bool linear = true; // Only used for intel hex
unsigned long addressBase = 0; // Only used for intel hex
while(!feof(m_file))
{
//memset(szLine, 0, cMaxLineLen);
if(fgets(szLine, cMaxLineLen, m_file) == 0)
{
if (ferror(m_file))
printf("Error reading input!\n");
continue;
}
//clear \r\n
for(int i=0; i<2; ++i)
{
int lastCharPos = strlen(szLine)-1;
if (szLine[lastCharPos] == '\n' || szLine[lastCharPos] == '\r')
szLine[lastCharPos] = 0;
}
if (strlen(szLine) == cMaxLineLen-1)
{
printf("Hex file lines to long!\n");
return -2;
}
// Ignore blank lines
if (szLine[0] == '\n' || szLine[0] == '\r')
continue;
// Detect format and warn if garbage lines are found
if (szLine[0] != ':')
{
printf("Ignoring garbage line!\n");
continue;
}
if(endSeen)
{
printf("Hex line after end of file record!\n");
return -3;
}
unsigned long dataBytes;
unsigned long startAddress;
unsigned long type;
if(sscanf(&szLine[1], "%2lx%4lx%2lx", &dataBytes, &startAddress, &type) != 3)
{
printf("Hex line beginning corrupt!\n");
return -4;
}
// Check line length
if (szLine[11 + dataBytes * 2] != '\n' && szLine[11 + dataBytes * 2] != 0)
{
printf("Hex line length incorrect!\n");
return -6;
}
// Check line checksum
uint8_t checkSum = 0;
unsigned long tmp;
for (unsigned int i = 0; i <= dataBytes + 4; ++i)
{
if (sscanf(&szLine[1 + i * 2], "%2lx", &tmp) != 1)
{
printf("Hex line data corrupt!\n");
return -7;
}
checkSum += tmp;
}
if (checkSum != 0)
{
printf("Hex line checksum error!\n");
return -8;
}
switch (type)
{
case 0: // Data record
if (!linear)
{
// Segmented
unsigned long test = startAddress;
test += dataBytes;
if (test > 0xffff)
{
printf("Can't handle wrapped segments!\n");
return -9;
}
}
if (!m_chunks.size() ||
m_chunks.back().m_startAddress + m_chunks.back().m_bytes.size() !=
addressBase + startAddress)
{
m_chunks.push_back(MemBlock());
m_chunks.back().m_startAddress = addressBase + startAddress;
}
{
unsigned char i = 0;
for (i = 0; i < dataBytes; ++i)
{
sscanf(&szLine[9 + i * 2], "%2lx", &tmp);
if (addressBase + startAddress + i > limit)
{
cout << "Ignoring data above address space!\n";
cout << "Data address: " << addressBase + startAddress + i;
cout << " Limit: " << limit << "\n";
if (!m_chunks.back().m_bytes.size())
{
m_chunks.pop_back();
}
continue;
}
m_chunks.back().m_bytes.push_back(tmp);
}
}
break;
case 1: // End-of-file record
if (dataBytes != 0)
printf("Warning: End of file record not zero length!\n");
if (startAddress != 0)
printf("Warning: End of file record address not zero!\n");
endSeen = true;
break;
case 2: // Extended segment address record
if(dataBytes != 2)
{
printf("Length field must be 2 in extended segment address record!\n");
return -10;
}
if (startAddress != 0)
{
printf("Address field must be zero in extended segment address record!\n");
return -11;
}
sscanf(&szLine[9], "%4lx", &startAddress);
addressBase = startAddress << 4;
linear = false;
break;
case 3: // Start segment address record
if (dataBytes != 4)
printf("Warning: Length field must be 4 in start segment address record!\n");
if (startAddress != 0)
printf("Warning: Address field must be zero in start segment address record!\n");
if (dataBytes == 4)
{
unsigned long ssa;
char ssaStr[16];
sscanf(&szLine[9], "%8lx", &ssa);
sprintf(ssaStr, "%08lX\n", ssa);
cout << "Segment start address (CS/IP): ";
cout << ssaStr;
}
break;
case 4: // Extended linear address record
if (dataBytes != 2)
{
printf("Length field must be 2 in extended linear address record!\n");
return -12;
}
if (startAddress != 0)
{
printf("Address field must be zero in extended linear address record!\n");
return -13;
}
sscanf(&szLine[9], "%4lx", &startAddress);
addressBase = ((unsigned long)startAddress) << 16;
linear = true;
break;
case 5: // Start linear address record
if (dataBytes != 4)
printf("Warning: Length field must be 4 in start linear address record!\n");
if (startAddress != 0)
printf("Warning: Address field must be zero in start linear address record!\n");
if (dataBytes == 4)
{
unsigned long lsa;
char lsaStr[16];
sscanf(&szLine[9], "%8lx", &lsa);
sprintf(lsaStr, "%08lX\n", lsa);
cout << "Linear start address: ";
cout << lsaStr;
}
break;
default:
printf("Waring: Unknown record found!\n");
}
}
if (!endSeen)
printf("No end of file record!\n");
if (!m_chunks.size())
{
printf("No data in file!\n");
return -14;
}
vector<MemBlock>::iterator vi;
m_top = 0;
for (vi = m_chunks.begin(); vi < m_chunks.end(); vi++)
{
m_top = std::max<size_t>(m_top, vi->m_startAddress + vi->m_bytes.size() - 1);
}
if(binImage)
{
memset(binImage, 0, limit);
for(auto i : m_chunks)
{
for(size_t j=0; j<i.m_bytes.size(); ++j)
if(i.m_startAddress+j < limit)
binImage[i.m_startAddress+j] = i.m_bytes[j];
}
}
if(imgSize)
*imgSize = m_top;
return 0;
}
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