ihex

KO | EN

gitlite — search

#python #react #ai #typescript #llm #android #deep-learning #docker #nodejs #macos #java #vue #pytorch #mcp

(★ 96)

Intel HEX (IHEX) format read/write library in C

ihex 최신버젼 다운로드

최종 버전 다운로드 (.zip)

// repository documentation

Was this content helpful?

★ 0 (0 ratings)

kk_ihex
=======

A small library for reading and writing the
[Intel HEX](http://en.wikipedia.org/wiki/Intel_HEX) (or IHEX) format. The
library is mainly intended for embedded systems and microcontrollers, such
as Arduino, AVR, PIC, ARM, STM32, etc - hence the emphasis is on small size
rather than features, generality, or error handling.

See the header file `kk_ihex.h` for documentation, or below for simple examples.

~ [Kimmo Kulovesi](https://arkku.com/), 2013-12-27

Writing
=======

Basic usage for writing binary data as IHEX ASCII:

#include "kk_ihex_write.h"
     
    struct ihex_state ihex;
    ihex_init(&ihex);
    ihex_write_at_address(&ihex, 0);
    ihex_write_bytes(&ihex, my_data_bytes, my_data_size);
    ihex_end_write(&ihex);

The function `ihex_write_bytes` may be called multiple times to pass any
amount of data at a time.

The actual writing is done by a callback called `ihex_flush_buffer`,
which must be implemented, e.g., as follows:

void ihex_flush_buffer(struct ihex_state *ihex, char *buffer, char *eptr) {
        *eptr = '\0';
        (void) fputs(buffer, stdout);
    }

The length of the buffer can be obtained from `eptr - buffer`. The actual
implementation may of course do with the IHEX data as it pleases, e.g.,
transmit it over a serial port.

For a complete example, see the included program `bin2ihex.c`.

Reading
=======

Basic usage for reading ASCII IHEX into binary data:

#include "kk_ihex_read.h"
     
    struct ihex_state ihex;
    ihex_begin_read(&ihex);
    ihex_read_bytes(&ihex, my_ascii_bytes, my_ascii_length);
    ihex_end_read(&ihex);

The function `ihex_read_bytes` may be called multiple times to pass any
amount of data at a time.

The reading functions call the function `ihex_data_read`, which must be
implemented by the caller to store the binary data, e.g., as follows:

ihex_bool_t ihex_data_read (struct ihex_state *ihex,
                                ihex_record_type_t type,
                                ihex_bool_t checksum_error) {
        if (type == IHEX_DATA_RECORD) {
            unsigned long address = (unsigned long) IHEX_LINEAR_ADDRESS(ihex);
            (void) fseek(outfile, address, SEEK_SET);
            (void) fwrite(ihex->data, ihex->length, 1, outfile);
        } else if (type == IHEX_END_OF_FILE_RECORD) {
            (void) fclose(outfile);
        }
        return true;
    }

Of course an actual implementation is free to do with the data as it chooses,
e.g., burn it on an EEPROM instead of writing it to a file.

For an example complete with error handling, see the included program
`ihex2bin.c`.

Example Programs
================

The included example programs, `ihex2bin` and `bin2ihex`, implement
a very simple conversion between raw binary data and Intel HEX.
Usage by example:

# Simple conversion from binary to IHEX:
    bin2ihex <infile.bin >outfile.hex

# Add an offset to the output addresses (i.e., make the address
    # of the first byte of the input other than zero):
    bin2ihex -a 0x8000000 -i infile.bin -o outfile.hex

# Encode 64 input bytes per output IHEX line:
    bin2ihex -b 64 <infile.bin >outfile.hex

# Simple conversion from IHEX to binary:
    ihex2bin <infile.hex >outfile.bin

# Manually specify the initial address written (i.e., subtract
    # an offset from the input addresses):
    ihex2bin -a 0x8000000 -i infile.hex -o outfile.bin

# Start output at the first data byte (i.e., make the address offset
    # equal to the address of the first data byte read from input):
    ihex2bin -A -i infile.hex -o outfile.bin

Both programs also accept the option `-v` to increase verbosity.

When using `ihex2bin` on Intel HEX files produced by compilers and such,
it is a good idea to specify the command-line option `-A` to autodetect
the address offset. Otherwise the program will simply fill any unused
addresses, starting from 0, with zero bytes, which may total mega- or
even gigabytes.

Utilities
=========

Four additional utilities are provided to help working with ROM images:

* `split16bit` – splits a 16-bit ROM binary into two 8-bit halves
* `merge16bit` – merges two 8-bit ROM binary halves into a single 16-bit file
* `split32bit` – splits a 32-bit ROM binary into four 8-bit parts
* `merge32bit` – merges four 8-bit ROM binary parts into a single 32-bit file

Both 16-bit utilities take the filenames of the high and low halves with the
arguments `-l low.bin` and `-h high.bin`, respectively. The bytes are in
little endian order, i.e., the one with the lowest address is the "low" half.

# Split 16bit.bin into low.bin and high.bin:
    split16bit -i 16bit.bin -l low.bin -h high.bin

# Merge low.bin and high.bin into 16bit.bin:
    merge16bit -o 16bit.bin -l low.bin -h high.bin

Both 32-bit utilities take the filenames of the four 8-bit files with the
arguments `-0`, `-1`, `-2`, and `-3`, with byte 0 being the one with the
lowest address, i.e., the bytes are in little endian order.

# Split 32bit.bin into a.bin, b.bin, c.bin, and d.bin
    split32bit -i 32bit.bin -0 a.bin -1 b.bin -2 c.bin -3 d.bin

# Merge a.bin, b.bin, c.bin, and d.bin into 32bit.bin
    merge32bit -o 32bit.bin -0 a.bin -1 b.bin -2 c.bin -3 d.bin

These utilities have nothing to with IHEX as such, but they are so small that
it didn't seem worth the bother to release them separately.

ihex

ihex 최신버젼 다운로드

오늘의 추천 프로젝트

Was this content helpful?

Recent Feedback

ihex

ihex 최신버젼 다운로드

오늘의 추천 프로젝트

Was this content helpful?

Recent Feedback

Download README