def __init__(self, access_code='', threshold=-1, callback=None):
"""
packet_demod constructor.
Args:
access_code: AKA sync vector
threshold: detect access_code with up to threshold bits wrong (0 -> use default)
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 = 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,
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, packet_sink=None):
#initialize hier2
gr.hier_block2.__init__(
self,
"ofdm_mod",
gr.io_signature(1, 1, 1), # Input signature
gr.io_signature(1, 1, 1) # Output signature
)
#create blocks
"""msg_source = blocks.message_source(self._item_size_out, DEFAULT_MSGQ_LIMIT)
self._msgq_out = msg_source.msgq()
#connect
self.connect(self, packet_sink)
"""
##self.connect(self, packet_sink)
#self.connect(packet_sink,self)
msg_in = blocks.message_source(1, DEFAULT_MSGQ_LIMIT)
msgq = msg_in.msgq()
#msgq = gr.msg_queue(DEFAULT_MSGQ_LIMIT)
correlator = digital.correlate_access_code_bb(packet_sink._access_code,
packet_sink._threshold)
framer_sink = digital.framer_sink_1(msgq)
self.connect(self, packet_sink)
self.connect(packet_sink, self)
def __init__(self, access_code='', threshold=-1, callback=None):
"""
packet_demod constructor.
Args:
access_code: AKA sync vector
threshold: detect access_code with up to threshold bits wrong (0 -> use default)
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 = 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, 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 = digital.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, 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 test_002(self):
code = tuple(string_to_1_0_list(default_access_code))
access_code = to_1_0_string(code)
header = tuple(
2 * [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0]) # len=2
pad = (0, ) * 100
src_data = code + header + \
(0, 1, 0, 0, 1, 0, 0, 0) + (0, 1, 0, 0, 1, 0, 0, 1) + pad
expected_data = b'HI'
rcvd_pktq = gr.msg_queue()
src = blocks.vector_source_b(src_data)
correlator = digital.correlate_access_code_bb(access_code, 0)
framer_sink = digital.framer_sink_1(rcvd_pktq)
vsnk = blocks.vector_sink_b()
self.tb.connect(src, correlator, framer_sink)
self.tb.connect(correlator, vsnk)
self.tb.run()
result_data = rcvd_pktq.delete_head()
result_data = result_data.to_string()
self.assertEqual(expected_data, result_data)
def __init__(self, packet_sink=None):
#initialize hier2
gr.hier_block2.__init__(
self,
"ofdm_mod",
gr.io_signature(1, 1, 1), # Input signature
gr.io_signature(1, 1, 1) # Output signature
)
#create blocks
"""msg_source = blocks.message_source(self._item_size_out, DEFAULT_MSGQ_LIMIT)
self._msgq_out = msg_source.msgq()
#connect
self.connect(self, packet_sink)
"""
##self.connect(self, packet_sink)
#self.connect(packet_sink,self)
msg_in = blocks.message_source(1, DEFAULT_MSGQ_LIMIT)
msgq = msg_in.msgq()
#msgq = gr.msg_queue(DEFAULT_MSGQ_LIMIT)
correlator = digital.correlate_access_code_bb(packet_sink._access_code, packet_sink._threshold)
framer_sink = digital.framer_sink_1(msgq)
self.connect(self, packet_sink)
self.connect(packet_sink, self)
def test_002(self):
code = tuple(string_to_1_0_list(default_access_code))
access_code = to_1_0_string(code)
header = tuple(2*[0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,0]) # len=2
pad = (0,) * 100
src_data = code + header + (0,1,0,0,1,0,0,0) + (0,1,0,0,1,0,0,1) + pad
expected_data = 'HI'
rcvd_pktq = gr.msg_queue()
src = blocks.vector_source_b(src_data)
correlator = digital.correlate_access_code_bb(access_code, 0)
framer_sink = digital.framer_sink_1(rcvd_pktq)
vsnk = blocks.vector_sink_b()
self.tb.connect(src, correlator, framer_sink)
self.tb.connect(correlator, vsnk)
self.tb.run()
result_data = rcvd_pktq.delete_head()
result_data = result_data.to_string()
self.assertEqual(expected_data, result_data)