nathan wagner
b96310f621
it's returing valid attribute arrays, that just need converted on z2m side. it's also respecting the stop command from the console, which I will attempt to expose as just a button press.
127 lines
3.6 KiB
Python
127 lines
3.6 KiB
Python
#! python
|
|
#
|
|
# This is a codec to create and decode hexdumps with spaces between characters. used by miniterm.
|
|
#
|
|
# This file is part of pySerial. https://github.com/pyserial/pyserial
|
|
# (C) 2015-2016 Chris Liechti <cliechti@gmx.net>
|
|
#
|
|
# SPDX-License-Identifier: BSD-3-Clause
|
|
"""\
|
|
Python 'hex' Codec - 2-digit hex with spaces content transfer encoding.
|
|
|
|
Encode and decode may be a bit missleading at first sight...
|
|
|
|
The textual representation is a hex dump: e.g. "40 41"
|
|
The "encoded" data of this is the binary form, e.g. b"@A"
|
|
|
|
Therefore decoding is binary to text and thus converting binary data to hex dump.
|
|
|
|
"""
|
|
|
|
from __future__ import absolute_import
|
|
|
|
import codecs
|
|
import serial
|
|
|
|
|
|
try:
|
|
unicode
|
|
except (NameError, AttributeError):
|
|
unicode = str # for Python 3, pylint: disable=redefined-builtin,invalid-name
|
|
|
|
|
|
HEXDIGITS = '0123456789ABCDEF'
|
|
|
|
|
|
# Codec APIs
|
|
|
|
def hex_encode(data, errors='strict'):
|
|
"""'40 41 42' -> b'@ab'"""
|
|
return (serial.to_bytes([int(h, 16) for h in data.split()]), len(data))
|
|
|
|
|
|
def hex_decode(data, errors='strict'):
|
|
"""b'@ab' -> '40 41 42'"""
|
|
return (unicode(''.join('{:02X} '.format(ord(b)) for b in serial.iterbytes(data))), len(data))
|
|
|
|
|
|
class Codec(codecs.Codec):
|
|
def encode(self, data, errors='strict'):
|
|
"""'40 41 42' -> b'@ab'"""
|
|
return serial.to_bytes([int(h, 16) for h in data.split()])
|
|
|
|
def decode(self, data, errors='strict'):
|
|
"""b'@ab' -> '40 41 42'"""
|
|
return unicode(''.join('{:02X} '.format(ord(b)) for b in serial.iterbytes(data)))
|
|
|
|
|
|
class IncrementalEncoder(codecs.IncrementalEncoder):
|
|
"""Incremental hex encoder"""
|
|
|
|
def __init__(self, errors='strict'):
|
|
self.errors = errors
|
|
self.state = 0
|
|
|
|
def reset(self):
|
|
self.state = 0
|
|
|
|
def getstate(self):
|
|
return self.state
|
|
|
|
def setstate(self, state):
|
|
self.state = state
|
|
|
|
def encode(self, data, final=False):
|
|
"""\
|
|
Incremental encode, keep track of digits and emit a byte when a pair
|
|
of hex digits is found. The space is optional unless the error
|
|
handling is defined to be 'strict'.
|
|
"""
|
|
state = self.state
|
|
encoded = []
|
|
for c in data.upper():
|
|
if c in HEXDIGITS:
|
|
z = HEXDIGITS.index(c)
|
|
if state:
|
|
encoded.append(z + (state & 0xf0))
|
|
state = 0
|
|
else:
|
|
state = 0x100 + (z << 4)
|
|
elif c == ' ': # allow spaces to separate values
|
|
if state and self.errors == 'strict':
|
|
raise UnicodeError('odd number of hex digits')
|
|
state = 0
|
|
else:
|
|
if self.errors == 'strict':
|
|
raise UnicodeError('non-hex digit found: {!r}'.format(c))
|
|
self.state = state
|
|
return serial.to_bytes(encoded)
|
|
|
|
|
|
class IncrementalDecoder(codecs.IncrementalDecoder):
|
|
"""Incremental decoder"""
|
|
def decode(self, data, final=False):
|
|
return unicode(''.join('{:02X} '.format(ord(b)) for b in serial.iterbytes(data)))
|
|
|
|
|
|
class StreamWriter(Codec, codecs.StreamWriter):
|
|
"""Combination of hexlify codec and StreamWriter"""
|
|
|
|
|
|
class StreamReader(Codec, codecs.StreamReader):
|
|
"""Combination of hexlify codec and StreamReader"""
|
|
|
|
|
|
def getregentry():
|
|
"""encodings module API"""
|
|
return codecs.CodecInfo(
|
|
name='hexlify',
|
|
encode=hex_encode,
|
|
decode=hex_decode,
|
|
incrementalencoder=IncrementalEncoder,
|
|
incrementaldecoder=IncrementalDecoder,
|
|
streamwriter=StreamWriter,
|
|
streamreader=StreamReader,
|
|
#~ _is_text_encoding=True,
|
|
)
|