def __init__(self, samples_per_symbol, bits_per_symbol, preamble='', access_code='', pad_for_usrp=True):
"""
packet_mod constructor.
Args:
samples_per_symbol: number of samples per symbol
bits_per_symbol: number of bits per symbol
access_code: AKA sync vector
pad_for_usrp: If true, packets are padded such that they end up a multiple of 128 samples
payload_length: number of bytes in a data-stream slice
"""
print "here1"
gr.basic_block.__init__(self,name="packet_encoder",in_sig=[numpy.uint8],out_sig=[numpy.uint8])
#setup parameters
self._samples_per_symbol = samples_per_symbol
self._bits_per_symbol = bits_per_symbol
self._pad_for_usrp = pad_for_usrp
if not preamble: #get preamble
preamble = packet_utils.default_preamble
if not access_code: #get access code
access_code = packet_utils.default_access_code
if not packet_utils.is_1_0_string(preamble):
raise ValueError, "Invalid preamble %r. Must be string of 1's and 0's" % (preamble,)
if not packet_utils.is_1_0_string(access_code):
raise ValueError, "Invalid access_code %r. Must be string of 1's and 0's" % (access_code,)
self._preamble = preamble
self._access_code = access_code
self._pad_for_usrp = pad_for_usrp
#create blocks
msg_source = blocks.message_source(gr.sizeof_char, DEFAULT_MSGQ_LIMIT)
self._msgq_out = msg_source.msgq()
def make_packet(payload, samples_per_symbol, bits_per_symbol,
preamble, access_code,
pad_for_usrp=True, do_whitening=False, add_crc=False):
"""
Build a packet
Args:
payload: packet payload, len [0, 4096]
samples_per_symbol: samples per symbol (needed for padding calculation) (int)
bits_per_symbol: (needed for padding calculation) (int)
preamble: (eg: 10101010...)
access_code: the sync word
pad_for_usrp:
do_whitening: ccxxxx whitening version
add_crc: add CRC16 (2 bytes) checksum
Packet will have access code at the beginning, followed by length (1 byte), payload
and finally CRC-16.
"""
if not packet_utils.is_1_0_string(preamble):
raise ValueError, "preamble must be a string containing only 0's and 1's (%r)" % (preamble,)
if not packet_utils.is_1_0_string(access_code):
raise ValueError, "access_code must be a string containing only 0's and 1's (%r)" % (access_code,)
(packed_access_code, padded) = packet_utils.conv_1_0_string_to_packed_binary_string(access_code)
(packed_preamble, ignore) = packet_utils.conv_1_0_string_to_packed_binary_string(preamble)
# len
payload_length = len(payload)
# header (1 byte)
pkt_hd = make_header(payload_length)
# data
pkt_dt = payload
# final message
final_message = ''.join((pkt_hd, pkt_dt))
# CRC ?
if add_crc:
crc = crc16(final_message)
#print "crc: %02x %02x" % (ord(crc[0:1]), ord(crc[1:2]))
final_message = ''.join((final_message, crc))
# Whitening ?
pkt = ''
if do_whitening:
pkt = ''.join((packed_preamble, packed_access_code, whiten(final_message), '\x55'))
else:
pkt = ''.join((packed_preamble, packed_access_code, final_message, '\x55'))
# Padding ?
if pad_for_usrp:
usrp_packing = packet_utils._npadding_bytes(len(pkt), samples_per_symbol, bits_per_symbol) * '\x55'
pkt = pkt + usrp_packing
return pkt
def __init__(self,
samples_per_symbol,
bits_per_symbol,
preamble='',
access_code='',
pad_for_usrp=True,
do_whitening=False,
add_crc=False):
"""
packet_mod constructor.
Args:
samples_per_symbol: number of samples per symbol
bits_per_symbol: number of bits per symbol
access_code: AKA sync vector
pad_for_usrp: If true, packets are padded such that they end up a multiple of 128 samples
do_whitening: apply CC111x whitening
add_crc: add CRC16
"""
#setup parameters
self._samples_per_symbol = samples_per_symbol
self._bits_per_symbol = bits_per_symbol
self._pad_for_usrp = pad_for_usrp
if not preamble: #get preamble
preamble = cc1111_packet_utils.default_preamble
if not access_code: #get access code
access_code = cc1111_packet_utils.default_access_code
if not packet_utils.is_1_0_string(preamble):
raise ValueError, "Invalid preamble %r. Must be string of 1's and 0's" % (
preamble, )
if not packet_utils.is_1_0_string(access_code):
raise ValueError, "Invalid access_code %r. Must be string of 1's and 0's" % (
access_code, )
self._preamble = preamble
self._access_code = access_code
self._pad_for_usrp = pad_for_usrp
self._do_whitening = do_whitening
self._add_crc = add_crc
#create blocks
msg_source = blocks.message_source(gr.sizeof_char, DEFAULT_MSGQ_LIMIT)
self._msgq_out = msg_source.msgq()
#initialize hier2
gr.hier_block2.__init__(
self,
"cc1111_packet_encoder",
gr.io_signature(0, 0, 0), # Input signature
gr.io_signature(1, 1, gr.sizeof_char) # Output signature
)
#connect
self.connect(msg_source, self)
def __init__(self, access_code='', threshold=-1, callback=None):
"""
packet_demod constructor.
@param access_code AKA sync vector
@param threshold detect access_code with up to threshold bits wrong (0 -> use default)
@param callback a function of args: ok, payload
"""
#access code
if not access_code: #get access code
access_code = packet_utils.default_access_code
if not packet_utils.is_1_0_string(access_code):
raise ValueError, "Invalid access_code %r. Must be string of 1's and 0's" % (
access_code, )
self._access_code = access_code
#threshold
if threshold < 0: threshold = DEFAULT_THRESHOLD
self._threshold = threshold
#blocks
msgq = gr.msg_queue(DEFAULT_MSGQ_LIMIT) #holds packets from the PHY
correlator = digital.correlate_access_code_bb(self._access_code,
self._threshold)
framer_sink = gr.framer_sink_1(msgq)
#initialize hier2
gr.hier_block2.__init__(
self,
"packet_decoder",
gr.io_signature(1, 1, gr.sizeof_char), # Input signature
gr.io_signature(0, 0, 0) # Output signature
)
#connect
self.connect(self, correlator, framer_sink)
#start thread
_packet_decoder_thread(msgq, callback)
def __init__(self, access_code=None, threshold=-1):
"""
Create a new packet deframer.
@param access_code: AKA sync vector
@type access_code: string of 1's and 0's
@param threshold: detect access_code with up to threshold bits wrong (-1 -> use default)
@type threshold: int
"""
gr.hier_block2.__init__(
self,
"demod_pkts2",
gr.io_signature(1, 1, 1),
gr.io_signature(1, 1, 1),
)
if not access_code:
access_code = packet_utils.default_access_code
if not packet_utils.is_1_0_string(access_code):
raise ValueError, "Invalid access_code %r. Must be string of 1's and 0's" % (access_code,)
if threshold == -1:
threshold = 12 # FIXME raise exception
msgq = gr.msg_queue(4) # holds packets from the PHY
self.correlator = gr_digital.correlate_access_code_bb(access_code, threshold)
self.framer_sink = gr.framer_sink_1(msgq)
self.connect(self, self.correlator, self.framer_sink)
self._queue_to_blob = _queue_to_blob(msgq)
self.connect(self._queue_to_blob, self)
def __init__(self, access_code='', threshold=-1, callback=None): """ packet_demod constructor. @param access_code AKA sync vector @param threshold detect access_code with up to threshold bits wrong (0 -> use default) @param callback a function of args: ok, payload """ #access code if not access_code: #get access code access_code = packet_utils.default_access_code if not packet_utils.is_1_0_string(access_code): raise ValueError, "Invalid access_code %r. Must be string of 1's and 0's" % (access_code,) self._access_code = access_code #threshold if threshold < 0: threshold = DEFAULT_THRESHOLD self._threshold = threshold #blocks msgq = gr.msg_queue(DEFAULT_MSGQ_LIMIT) #holds packets from the PHY correlator = digital.correlate_access_code_bb(self._access_code, self._threshold) framer_sink = gr.framer_sink_1(msgq) #initialize hier2 gr.hier_block2.__init__( self, "packet_decoder", gr.io_signature(1, 1, gr.sizeof_char), # Input signature gr.io_signature(0, 0, 0) # Output signature ) #connect self.connect(self, correlator, framer_sink) #start thread _packet_decoder_thread(msgq, callback)
def __init__(self, samples_per_symbol, bits_per_symbol, access_code='', pad_for_usrp=True): """ packet_mod constructor. @param samples_per_symbol number of samples per symbol @param bits_per_symbol number of bits per symbol @param access_code AKA sync vector @param pad_for_usrp If true, packets are padded such that they end up a multiple of 128 samples @param payload_length number of bytes in a data-stream slice """ #setup parameters self._samples_per_symbol = samples_per_symbol self._bits_per_symbol = bits_per_symbol self._pad_for_usrp = pad_for_usrp if not access_code: #get access code access_code = packet_utils.default_access_code if not packet_utils.is_1_0_string(access_code): raise ValueError, "Invalid access_code %r. Must be string of 1's and 0's" % (access_code,) self._access_code = access_code self._pad_for_usrp = pad_for_usrp #create blocks msg_source = gr.message_source(gr.sizeof_char, DEFAULT_MSGQ_LIMIT) self._msgq_out = msg_source.msgq() #initialize hier2 gr.hier_block2.__init__( self, "packet_encoder", gr.io_signature(0, 0, 0), # Input signature gr.io_signature(1, 1, gr.sizeof_char) # Output signature ) #connect self.connect(msg_source, self)
def __init__(
self,
msgq,
access_code=None,
threshold=0
):
"""
Create a new packet deframer.
@param access_code: AKA sync vector
@type access_code: string of 1's and 0's
@param threshold: detect access_code with up to threshold bits wrong
@type threshold: int
"""
gr.hier_block2.__init__(
self,
"packet_deframer",
gr.io_signature(1, 1, 1),
gr.io_signature(0, 0, 0)
)
if not access_code:
access_code = packet_utils.default_access_code
if not packet_utils.is_1_0_string(access_code):
raise ValueError, "Invalid access_code %r. Must be string of 1's and 0's" % (access_code,)
if threshold < 0:
raise ValueError, "Invalid threshold value %d" % (threshold)
#default_access_code = conv_packed_binary_string_to_1_0_string('\xAC\xDD\xA4\xE2\xF2\x8C\x20\xFC')
#default_preamble = conv_packed_binary_string_to_1_0_string('\xA4\xF2')
self.msgq = msgq
self.correlator = gr_digital.correlate_access_code_bb(access_code, threshold)
self.framer_sink = gr_digital.framer_sink_1(self.msgq)
self.connect(self, self.correlator, self.framer_sink)
def __init__(self, callback=None):
"""
packet_demod constructor.
Args:
station_id: The ID of the station that we are trying to decode the data from.
"""
# access code
self._threshold = DEFAULT_THRESHOLD
access_code = STATION_CODES["default"]
if not packet_utils.is_1_0_string(access_code):
raise ValueError, "Invalid access_code %r. Must be string of 1's and 0's" % (
access_code, )
self._access_code = access_code
# blocks
msgq = gr.msg_queue(DEFAULT_MSGQ_LIMIT) # holds packets from the PHY
correlator = digital.correlate_access_code_bb(self._access_code,
self._threshold)
framer_sink = digital.framer_sink_1(msgq)
# initialize hier2
gr.hier_block2.__init__(
self,
"packet_decoder",
gr.io_signature(1, 1, gr.sizeof_char), # Input signature
gr.io_signature(0, 0, 0) # Output signature
)
# connect
self.connect(self, correlator, framer_sink)
# start thread
_packet_decoder_thread(msgq, callback)
def __init__(self,
samples_per_symbol,
bits_per_symbol,
access_code=None,
use_whitener_offset=False):
"""
Create a new packet framer.
@param access_code: AKA sync vector
@type access_code: string of 1's and 0's between 1 and 64 long
@param use_whitener_offset: If true, start of whitener XOR string is incremented each packet
"""
self._bits_per_symbol = bits_per_symbol
self._samples_per_symbol = samples_per_symbol
gr.block.__init__(
self,
name="mod_pkts2",
in_sig=None,
out_sig=[numpy.uint8],
has_msg_input=True,
)
self._use_whitener_offset = use_whitener_offset
self._whitener_offset = 0
if not access_code:
access_code = packet_utils.default_access_code
if not packet_utils.is_1_0_string(access_code):
raise ValueError, "Invalid access_code %r. Must be string of 1's and 0's" % (
access_code, )
self._access_code = access_code
self._pkt = []
self.more_frame_cnt = 0
self.keep = False
def __init__(self, access_code=None, threshold=-1):
"""
Create a new packet deframer.
@param access_code: AKA sync vector
@type access_code: string of 1's and 0's
@param threshold: detect access_code with up to threshold bits wrong (-1 -> use default)
@type threshold: int
"""
gr.hier_block2.__init__(
self,
"demod_pkts2",
gr.io_signature(1, 1, 1),
gr.io_signature(1, 1, 1),
)
if not access_code:
access_code = packet_utils.default_access_code
if not packet_utils.is_1_0_string(access_code):
raise ValueError, "Invalid access_code %r. Must be string of 1's and 0's" % (
access_code, )
if threshold == -1:
threshold = 12 # FIXME raise exception
msgq = gr.msg_queue(4) # holds packets from the PHY
self.correlator = gr_digital.correlate_access_code_bb(
access_code, threshold)
self.framer_sink = gr.framer_sink_1(msgq)
self.connect(self, self.correlator, self.framer_sink)
self._queue_to_blob = _queue_to_blob(msgq)
self.connect(self._queue_to_blob, self)
def __init__(
self,
samples_per_symbol,
bits_per_symbol,
access_code=None,
use_whitener_offset=False
):
"""
Create a new packet framer.
@param access_code: AKA sync vector
@type access_code: string of 1's and 0's between 1 and 64 long
@param use_whitener_offset: If true, start of whitener XOR string is incremented each packet
"""
self._bits_per_symbol = bits_per_symbol
self._samples_per_symbol = samples_per_symbol
gr.block.__init__(
self,
name = "mod_pkts2",
in_sig = None,
out_sig = [numpy.uint8],
has_msg_input = True,
)
self._use_whitener_offset = use_whitener_offset
self._whitener_offset = 0
if not access_code:
access_code = packet_utils.default_access_code
if not packet_utils.is_1_0_string(access_code):
raise ValueError, "Invalid access_code %r. Must be string of 1's and 0's" % (access_code,)
self._access_code = access_code
self._pkt = []
def __init__(self,
samples_per_symbol,
bits_per_symbol,
preamble='',
access_code='',
pad_for_usrp=True):
"""
packet_mod constructor.
Args:
samples_per_symbol: number of samples per symbol
bits_per_symbol: number of bits per symbol
access_code: AKA sync vector
pad_for_usrp: If true, packets are padded such that they end up a multiple of 128 samples
payload_length: number of bytes in a data-stream slice
"""
print "here1"
gr.basic_block.__init__(self,
name="packet_encoder",
in_sig=[numpy.uint8],
out_sig=[numpy.uint8])
#setup parameters
self._samples_per_symbol = samples_per_symbol
self._bits_per_symbol = bits_per_symbol
self._pad_for_usrp = pad_for_usrp
if not preamble: #get preamble
preamble = packet_utils.default_preamble
if not access_code: #get access code
access_code = packet_utils.default_access_code
if not packet_utils.is_1_0_string(preamble):
raise ValueError, "Invalid preamble %r. Must be string of 1's and 0's" % (
preamble, )
if not packet_utils.is_1_0_string(access_code):
raise ValueError, "Invalid access_code %r. Must be string of 1's and 0's" % (
access_code, )
self._preamble = preamble
self._access_code = access_code
self._pad_for_usrp = pad_for_usrp
#create blocks
msg_source = blocks.message_source(gr.sizeof_char, DEFAULT_MSGQ_LIMIT)
self._msgq_out = msg_source.msgq()
def __init__(self, samples_per_symbol, bits_per_symbol, preamble='', access_code='', pad_for_usrp=True, do_whitening=False, add_crc=False):
"""
packet_mod constructor.
Args:
samples_per_symbol: number of samples per symbol
bits_per_symbol: number of bits per symbol
access_code: AKA sync vector
pad_for_usrp: If true, packets are padded such that they end up a multiple of 128 samples
do_whitening: apply CC111x whitening
add_crc: add CRC16
"""
#setup parameters
self._samples_per_symbol = samples_per_symbol
self._bits_per_symbol = bits_per_symbol
self._pad_for_usrp = pad_for_usrp
if not preamble: #get preamble
preamble = cc1111_packet_utils.default_preamble
if not access_code: #get access code
access_code = cc1111_packet_utils.default_access_code
if not packet_utils.is_1_0_string(preamble):
raise ValueError, "Invalid preamble %r. Must be string of 1's and 0's" % (preamble,)
if not packet_utils.is_1_0_string(access_code):
raise ValueError, "Invalid access_code %r. Must be string of 1's and 0's" % (access_code,)
self._preamble = preamble
self._access_code = access_code
self._pad_for_usrp = pad_for_usrp
self._do_whitening = do_whitening
self._add_crc = add_crc
#create blocks
msg_source = blocks.message_source(gr.sizeof_char, DEFAULT_MSGQ_LIMIT)
self._msgq_out = msg_source.msgq()
#initialize hier2
gr.hier_block2.__init__(
self,
"cc1111_packet_encoder",
gr.io_signature(0, 0, 0), # Input signature
gr.io_signature(1, 1, gr.sizeof_char) # Output signature
)
#connect
self.connect(msg_source, self)
def __init__(self, preamble="010101010", sync_word="0000111101"):
"""
@param preamble: the preamble chips
@param sync_word: the sync word bits
"""
gr.hier_block2.__init__(
self, "correlate_preamble",
gr.io_signature(1, 1, gr.sizeof_char*1),
gr.io_signature(1, 1, gr.sizeof_char*1),
)
if not packet_utils.is_1_0_string(preamble):
raise ValueError, "Invalid access_code %r. Must be string of 1's and 0's" % (preamble,)
self.preamble = digital.correlate_access_code_tag_bb(preamble, 0, "preamble")
if not packet_utils.is_1_0_string(sync_word):
raise ValueError, "Invalid access_code %r. Must be string of 1's and 0's" % (sync_word,)
self.sync = digital.correlate_access_code_tag_bb(sync_word, 0, "sync")
self.connect(self, self.sync, self.preamble, self)
def __init__(self):
"""
packet_mod constructor.
Args:
station_id: The ID of the station transmitting the data.
"""
# setup parameters
self._samples_per_symbol = 1
self._bits_per_symbol = 1
self._pad_for_usrp = False
access_code = STATION_CODES["default"]
preamble = packet_utils.default_preamble + "1010110011011101101001001110001011110010100011000010000011111100"
if not packet_utils.is_1_0_string(preamble):
raise ValueError, "Invalid preamble %r. Must be string of 1's and 0's" % (
preamble, )
if not packet_utils.is_1_0_string(access_code):
raise ValueError, "Invalid access_code %r. Must be string of 1's and 0's" % (
access_code, )
self._preamble = preamble
self._access_code = access_code
# create blocks
msg_source = blocks.message_source(gr.sizeof_char, DEFAULT_MSGQ_LIMIT)
self._msgq_out = msg_source.msgq()
# initialize hier2
gr.hier_block2.__init__(
self,
"packet_encoder",
gr.io_signature(0, 0, 0), # Input signature
gr.io_signature(1, 1, gr.sizeof_char) # Output signature
)
# connect
self.connect(msg_source, self)
def __init__(
self,
#samples_per_symbol,
#bits_per_symbol,
access_code=None,
whitener_offset=0,
rotate_whitener_offset=False,
whiten=True,
preamble='',
postamble=''
):
"""
Create a new packet framer.
@param access_code: AKA sync vector
@type access_code: string of 1's and 0's between 1 and 64 long
@param use_whitener_offset: If true, start of whitener XOR string is incremented each packet
"""
gr.basic_block.__init__(
self,
name="packet_framer",
in_sig=None,
out_sig=None)
self.message_port_register_out(pmt.intern('out'))
self.message_port_register_in(pmt.intern('in'))
self.set_msg_handler(pmt.intern('in'), self.packetise)
if not access_code:
access_code = packet_utils.default_access_code
if not packet_utils.is_1_0_string(access_code):
raise ValueError, "Invalid access_code %r. Must be string of 1's and 0's" % (access_code,)
#self._bits_per_symbol = bits_per_symbol
#self._samples_per_symbol = samples_per_symbol
self.rotate_whitener_offset = rotate_whitener_offset
self.whitener_offset = whitener_offset
self.whiten = whiten
self.access_code = access_code
self.preamble = preamble
self.postamble = postamble
def __init__(self,
samples_per_symbol,
bits_per_symbol,
access_code='',
pad_for_usrp=True):
"""
packet_mod constructor.
Args:
samples_per_symbol: number of samples per symbol
bits_per_symbol: number of bits per symbol
access_code: AKA sync vector
pad_for_usrp: If true, packets are padded such that they end up a multiple of 128 samples
payload_length: number of bytes in a data-stream slice
"""
#setup parameters
self._samples_per_symbol = samples_per_symbol
self._bits_per_symbol = bits_per_symbol
self._pad_for_usrp = pad_for_usrp
if not access_code: #get access code
access_code = packet_utils.default_access_code
if not packet_utils.is_1_0_string(access_code):
raise ValueError, "Invalid access_code %r. Must be string of 1's and 0's" % (
access_code, )
self._access_code = access_code
self._pad_for_usrp = pad_for_usrp
#create blocks
msg_source = blocks.message_source(gr.sizeof_char, DEFAULT_MSGQ_LIMIT)
self._msgq_out = msg_source.msgq()
#initialize hier2
gr.hier_block2.__init__(
self,
"packet_encoder",
gr.io_signature(0, 0, 0), # Input signature
gr.io_signature(1, 1, gr.sizeof_char) # Output signature
)
#connect
self.connect(msg_source, self)
