TTN utils

ttn-build-key

#!/usr/bin/env python3

import random

key8 = ''.join(random.choice('0123456789ABCDEF') for n in range(16))
key16 = ''.join(random.choice('0123456789ABCDEF') for n in range(32))

print("generate 8 bytes key: %s" % key8)
print("generate 16 bytes key: %s" % key16)

ttn-key-for-arduino

#!/usr/bin/env python3

import argparse
import binascii

# parse args
parser = argparse.ArgumentParser()
parser.add_argument("key", type=str)
parser.add_argument("-r", "--reverse", action="store_true", default=False)
args = parser.parse_args()

s = ""
bytes_l = list(binascii.a2b_hex(args.key))

if args.reverse:
    bytes_l.reverse()

for b in bytes_l:
    if s:
        s += ", "
    s += "0x%02x" % b

print(s)