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='', 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=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,
demodulator,
access_code=None,
callback=None,
threshold=-1):
"""
Hierarchical block for demodulating and deframing packets.
The input is the complex modulated signal at baseband.
Demodulated packets are sent to the handler.
@param demodulator: instance of demodulator class (gr_block or hier_block2)
@type demodulator: complex baseband in
@param access_code: AKA sync vector
@type access_code: string of 1's and 0's
@param callback: function of two args: ok, payload
@type callback: ok: bool; payload: string
@param threshold: detect access_code with up to threshold bits wrong (-1 -> use default)
@type threshold: int
"""
gr.hier_block2.__init__(
self,
"demod_pkts",
gr.io_signature(1, 1, gr.sizeof_gr_complex), # Input signature
gr.io_signature(0, 0, 0)) # Output signature
self._demodulator = demodulator
if access_code is None:
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
if threshold == -1:
threshold = 12 # FIXME raise exception
self._rcvd_pktq = gr.msg_queue() # holds packets from the PHY
self.correlator = digital_swig.correlate_access_code_bb(
access_code, threshold)
self.framer_sink = gr.framer_sink_1(self._rcvd_pktq)
self.connect(self, self._demodulator, self.correlator,
self.framer_sink)
self._watcher = _queue_watcher_thread(self._rcvd_pktq, callback)
def __init__(self, demodulator, access_code=None, callback=None, threshold=-1):
"""
Hierarchical block for demodulating and deframing packets.
The input is the complex modulated signal at baseband.
Demodulated packets are sent to the handler.
@param demodulator: instance of demodulator class (gr_block or hier_block2)
@type demodulator: complex baseband in
@param access_code: AKA sync vector
@type access_code: string of 1's and 0's
@param callback: function of two args: ok, payload
@type callback: ok: bool; payload: string
@param threshold: detect access_code with up to threshold bits wrong (-1 -> use default)
@type threshold: int
"""
gr.hier_block2.__init__(self, "demod_pkts",
gr.io_signature(1, 1, gr.sizeof_gr_complex), # Input signature
gr.io_signature(0, 0, 0)) # Output signature
self._demodulator = demodulator
if access_code is None:
access_code = cat_packet_utils.default_access_code
if not cat_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
if threshold == -1:
threshold = 12 # FIXME raise exception
self._rcvd_pktq = gr.msg_queue() # holds packets from the PHY
self.correlator = digital_swig.correlate_access_code_bb(access_code, threshold)
self.framer_sink = gr.framer_sink_1(self._rcvd_pktq)
self.framer_sink.setlen(1670) # Xu: set d_packetlen
self.connect(self, self._demodulator, self.correlator, self.framer_sink)
self._watcher = _queue_watcher_thread(self._rcvd_pktq, callback)
def __init__(self, fg, demodulator, access_code=None, callback=None, threshold=-1):
"""
Hierarchical block for demodulating and deframing packets.
The input is the complex modulated signal at baseband.
Demodulated packets are sent to the handler.
@param fg: flow graph
@type fg: flow graph
@param demodulator: instance of demodulator class (gr_block or hier_block)
@type demodulator: complex baseband in
@param access_code: AKA sync vector
@type access_code: string of 1's and 0's
@param callback: function of two args: ok, payload
@type callback: ok: bool; payload: string
@param threshold: detect access_code with up to threshold bits wrong (-1 -> use default)
@type threshold: int
"""
self._demodulator = demodulator
if access_code is None:
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
if threshold == -1:
threshold = 12 # FIXME raise exception
self._rcvd_pktq = gr.msg_queue() # holds packets from the PHY
self.correlator = gr.correlate_access_code_bb(access_code, threshold)
self.framer_sink = gr.framer_sink_1(self._rcvd_pktq)
fg.connect(self._demodulator, self.correlator, self.framer_sink)
gr.hier_block.__init__(self, fg, self._demodulator, None)
self._watcher = _queue_watcher_thread(self._rcvd_pktq, callback)