Xilinx COE file generator

coegen.py

import binascii
import hashlib
import argparse

parser = argparse.ArgumentParser(description='Xilinx COE file generator', formatter_class=argparse.ArgumentDefaultsHelpFormatter)
parser.add_argument('input', metavar='input_file', type=str, help='input file path')
parser.add_argument('output', metavar='output_file', type=str, help='output file path')
parser.add_argument('--width', type=int, help='Memory width (bits)', default=32, choices=[32, 64, 128, 256, 512, 1024, 2048, 4096])
args = parser.parse_args()

f = open(args.input, 'rb').read()
of = open(args.output, 'wb')

of.write(b'memory_initialization_radix=16;\nmemory_initialization_vector=')
buf = []
dp = 0
for i,b in enumerate(f):
    # print(binascii.hexlify(bytes([b])))
    if (i == 0) or (i % (args.width / 8) > 0):
        buf.append(b)
        if i == (len(f) - 1):
            buf.reverse()
            of.write(binascii.hexlify(bytes(buf)))
            print("output size: %d[byte]" % (i + 1))
            of.write(b';\n')
            dp += 1
            break
    else:
        buf.reverse()
        of.write(binascii.hexlify(bytes(buf)))
        dp += 1
        if i == (len(f) - 1):
            print("output size: %d[byte]" % (i + 1))
            of.write(b';\n')
            break
        else:
            of.write(b',\n')
        buf = []
        buf.append(b)

print('Memory width: %d[bits]' % args.width)
print('Memory depth: %d' % dp)
print('Memory size: %d[bits] (%d[bytes])' % (dp * args.width, dp * args.width / 8))
m = hashlib.sha256()
m.update(f)
print("sha256: %s" % binascii.hexlify(m.digest()).decode('ascii'))

of.close()