S9合ってるか
make_srec_and_eep_random_data.py
#coding: utf-8

import random
import sys

def make_eep_data():
	for i in range(256):
		print format(i, "02X")

# make_eep_data()

# sys.exit()

#データの合計値からチェックサム値を計算する
def calc_hosu(data_sum):
	tmp=int("0x"+format(data_sum,"02x"), 16)
	ret = 0xFF-tmp
	return hex(ret)[-2:]

#あるレコードタイプのsrecデータを適当に作る
def show_each_data_type(record_type):
	if record_type == "0":
		record_byte_len = 1
		address_byte_len = 2
		data_byte_len = 14
		checksum_byte_len = 1
		byte_len = address_byte_len + data_byte_len + checksum_byte_len
		aline_record = format(byte_len, "02X")
		aline_add = "0000"
		aline_data = "746573745f646174612e73726563"
		aline_checksum = byte_len + 0 + 0x74+0x65+0x73+0x74+0x5f+0x64+0x61+0x74+0x61+0x2e+0x73+0x72+0x65+0x63
		str_aline_checksum = calc_hosu(aline_checksum)
		print "S" + record_type + aline_record + aline_add + aline_data + str_aline_checksum
		return
	elif record_type == "1":
		byte_len = 0x13
		address_byte_len = 2
		area_start_address = 0x0
		area_end_address = 0x10000
	elif record_type == "2":
		byte_len = 0x14
		record_type = "2"
		address_byte_len = 3
		area_start_address = 0x10000
		area_end_address = 0x40000
	elif record_type == "9":
		byte_len = 0x1	#最後のチェックサム以外の2byte何か解らんからなくしてチェックサムの1byteだけにする
		aline_add = ""
		aline_data = ""
		aline_checksum = byte_len
		str_aline_checksum = calc_hosu(aline_checksum)
		print "S" + record_type + format(byte_len, "02X") + aline_add + aline_data + str_aline_checksum
		return
	else:
		sys.exit()

	checksum_byte_len = 1
	data_byte_len = byte_len - address_byte_len - checksum_byte_len
	for i in range(area_start_address,area_end_address,0x10):
		#byte数 = address(2)+data(16)+checksum(1)	(byte_len値の1byteは含まない。checksumの計算には含む)
		#タイプ	byte数	address				data					checksum
		#"S1"+	"13"+	"xxXX"+	"xxXXxxXXxxXXxxXXxxXXxxXXxxXXxxXX"+	"xx"

		aline_checksum = byte_len

		#address
		aline_add = format(i, "0"+str(address_byte_len*2)+"X")
		aline_checksum += i
		#data
		aline_data = ""
		for j in range(data_byte_len):
			adata = random.randint(0,0xF)
			aline_data = aline_data + format(adata, "02X")
			aline_checksum += adata

		#checksum
		str_aline_checksum = calc_hosu(aline_checksum)

		print "S" + record_type + format(byte_len, "02X") + aline_add + aline_data + str_aline_checksum

record_type = "0"
show_each_data_type(record_type)
record_type = "1"
show_each_data_type(record_type)
record_type = "2"
show_each_data_type(record_type)
record_type = "9"
show_each_data_type(record_type)

# import binascii
# print binascii.hexlify("test_data.srec")