print_frame2.py

#!/usr/bin/env python
import crcmod


def check_crc(data, crc):
	crc16 = crcmod.predefined.mkCrcFun('crc-ccitt-false')

	_crc = crc16(data)

	# Convert incoming CRC to a int
	_crc_in = ord(crc[0]) + ord(crc[1])*256

	if _crc_in == _crc:
		return True
	else:
		return False

data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


_data = data.decode('hex')


_header = _data[:0x08]
_ecc = _data[0x08:0x38]

if _data[0x38] != '\x0f':
	print("Unknown frametype flag.")

_frames = _data[0x39:]

# Extract frame blocks.
i = 0
frames = []

while i < len(_frames):
	_type = _frames[i+0].encode('hex')
	_len = ord(_frames[i+1])
	_content = _frames[i+2:i+2+_len]
	_crc = _frames[i+2+_len:i+2+_len+2]

	_crc_ok = "OK" if check_crc(_content, _crc) else "BAD"

	print("Got frame type: %s, length: %d, CRC:%s" % (_type, _len, _crc_ok))

	frames.append({'type':_type, 'len':_len, 'content':_content.encode('hex'), 'crc':_crc})

	i += _len+4


for _frame in frames:
	print(_frame)