mk_intel_hex.py

#!/usr/bin/env python3
# -*- coding: utf8 -*-
import os
import platform
import subprocess


def split_n(text, n):
    return [ text[i*n:i*n+n] for i in range(int(len(text)/n)) ]

def conv_hexlist(list):
    return [int(s, 16) for s in list]

old_path = os.getcwd()
dir_path = os.getcwd() +'/src/sw/'

hex_in_path = os.getcwd() + '/src/sw/'
hex_out_path = os.getcwd() + '/fpga/chisel_generated/'

#proc = subprocess.run('rm -rf *.bin *.hex', shell=True, universal_newlines=True, cwd=hex_out_path)
files = [path for path in os.listdir(dir_path)]

files_in = [s for s in files if '.hex' in s]  # select *.hex file
files_in = [s for s in files_in if '_intel.hex' not in s] # exclude *_intel.hex file

# intel hex
hex_start_code  = ':'
hex_byte_count  = '04'
hex_start_addr  = 0x0000
hex_record_type = '00'
hex_end_of_file = ':00000001FF'

# noinspection PyInterpreter
print('Convert intel hex ...\r\n')


#open scala file for write test code

for item in files_in:
    hex_start_addr  = 0x0000
    splitname = item.split('.')[0]
    fr = open(hex_in_path+item,'r')
    fw = open(hex_out_path+splitname+'_intel.hex','w')
    line = fr.readline()
    while line:
        hexdata = line.strip()
        li_hexdata = conv_hexlist(split_n(hexdata,2)) # read hexdata -> list
        li_hexaddr = conv_hexlist(split_n(format(hex_start_addr,'04x'),2))
        checksum = (0 - (int(hex_byte_count) + sum(li_hexaddr) + int(hex_record_type) + sum(li_hexdata))) & 0xff

        wr_hex = hex_start_code+hex_byte_count+format(hex_start_addr,'04x')+hex_record_type+hexdata+format(checksum,'02x')+'\n'
        fw.write(wr_hex)

        hex_start_addr = hex_start_addr + 1 #increment address
        line = fr.readline()
    fw.write(hex_end_of_file+'\n')
    fw.close
    fr.close


print('Generated intel hex files on '+hex_out_path+'\r\n')