xxd written in python for windows. Need to install IntelHex first.

xxd.py

#!/usr/bin/env python

from argparse import ArgumentParser
from intelhex import IntelHex
import os


def xxd(in_path, out_path, offset=0):
    """convert binary to hex"""

    try:
        hex = IntelHex()
        hex.loadbin(in_path, offset)
        hex.write_hex_file(out_path)
        return 0

    except Exception, e:
        print e
        return -1


def xxd_reverse(in_path, out_path):
    """convert hex file to binary"""
    try:
        hex = IntelHex(in_path)
        hex.tobinfile(out_path)
        return 0

    except Exception, e:
        print e
        return -1


if __name__ == '__main__':
    parser = ArgumentParser(description="Convert binary file to hex.")
    parser.add_argument('infile', help='Input file in binary.')
    parser.add_argument('--outfile', '-o', help='Output file in hex.',
                        required=False)
    parser.add_argument('--offset', '-n',
                        help='Adress offset for the hex output.',
                        default="0", required=False)
    parser.add_argument('--reverse', '-r', help='Output file in binary.',
                        required=False)

    args = parser.parse_args()

    if(args.outfile is None):
        args.outfile = os.path.splitext(args.infile)[0] + ".hex"

    args.offset = int(args.offset, 0)

    if args.reverse:
        xxd_reverse(args.infile, args.outfile)
    else
        xxd(args.infile, args.outfile, args.offset)

No problem. I should be able to go to it this week. The input file is going to have to be intel hex for reverse to work. Not just a massive hex data file.

Ill add an example too but in the mean time see below. Everything after the source file is optional. if you don't provide an output name it converts the input file to a .hex file.

python xxd.py source.bin -o output.hex -n 0x1000