def __init__(self, protocol, context, multimon_demod_args):
gr.hier_block2.__init__(
self,
'%s(%r, %r)' %
(type(self).__name__, multimon_demod_args, protocol),
gr.io_signature(1, 1, gr.sizeof_float * 1),
gr.io_signature(1, 1, gr.sizeof_float * 1),
)
# Subprocess
# using /usr/bin/env because twisted spawnProcess doesn't support path search
process = reactor.spawnProcess(
protocol,
'/usr/bin/env',
env=None, # inherit environment
args=['env', 'multimon-ng', '-t', 'raw'] + multimon_demod_args +
['-v', '10', '-'],
childFDs={
0: 'w',
1: 'r',
2: 2
})
sink = make_sink_to_process_stdin(process, itemsize=gr.sizeof_short)
# Output
to_short = blocks.float_to_short(vlen=1, scale=int_scale)
self.connect(
self,
# blocks.complex_to_float(),
to_short,
sink)
# Audio copy output
unconverter = blocks.short_to_float(vlen=1, scale=int_scale)
self.connect(to_short, unconverter)
self.connect(unconverter, self)
def __init__(self, protocol, context, multimon_demod_args):
gr.hier_block2.__init__(
self, b'%s(%r, %r)' % (type(self).__name__, multimon_demod_args, protocol),
gr.io_signature(1, 1, gr.sizeof_float * 1),
gr.io_signature(1, 1, gr.sizeof_float * 1),
)
# Subprocess
# using /usr/bin/env because twisted spawnProcess doesn't support path search
process = reactor.spawnProcess(
protocol,
'/usr/bin/env',
env=None, # inherit environment
args=['env', 'multimon-ng', '-t', 'raw'] + multimon_demod_args + ['-v', '10', '-'],
childFDs={
0: 'w',
1: 'r',
2: 2
})
sink = make_sink_to_process_stdin(process, itemsize=gr.sizeof_short)
# Output
to_short = blocks.float_to_short(vlen=1, scale=int_scale)
self.connect(
self,
# blocks.complex_to_float(),
to_short,
sink)
# Audio copy output
unconverter = blocks.short_to_float(vlen=1, scale=int_scale)
self.connect(to_short, unconverter)
self.connect(unconverter, self)
def __init__(self, mode='433', input_rate=0, context=None):
assert input_rate > 0
assert context is not None
gr.hier_block2.__init__(
self, type(self).__name__,
gr.io_signature(1, 1, gr.sizeof_gr_complex),
gr.io_signature(0, 0, 0))
# The input bandwidth chosen is not primarily determined by the bandwidth of the input signals, but by the frequency error of the transmitters. Therefore it is not too critical, and we can choose the exact rate to make the filtering easy.
if input_rate <= upper_preferred_demod_rate:
# Skip having a filter at all.
self.__band_filter = None
demod_rate = input_rate
else:
# TODO: This gunk is very similar to the stuff that MultistageChannelFilter does. See if we can share some code.
lower_rate = input_rate
lower_rate_prev = None
while lower_rate > upper_preferred_demod_rate and lower_rate != lower_rate_prev:
lower_rate_prev = lower_rate
if lower_rate % 5 == 0 and lower_rate > upper_preferred_demod_rate * 3:
lower_rate /= 5
elif lower_rate % 2 == 0:
lower_rate /= 2
else:
# non-integer ratio
lower_rate = upper_preferred_demod_rate
break
demod_rate = lower_rate
self.__band_filter = MultistageChannelFilter(
input_rate=input_rate,
output_rate=demod_rate,
cutoff_freq=demod_rate * 0.4,
transition_width=demod_rate * 0.2)
# Subprocess
# using /usr/bin/env because twisted spawnProcess doesn't support path search
# pylint: disable=no-member
process = the_reactor.spawnProcess(
RTL433ProcessProtocol(context.output_message),
'/usr/bin/env',
env=None, # inherit environment
args=[
'env', 'rtl_433',
'-F', 'json',
'-r', '-', # read from stdin
'-m', '3', # complex float input
'-s', str(demod_rate),
],
childFDs={
0: 'w',
1: 'r',
2: 2
})
sink = make_sink_to_process_stdin(process, itemsize=gr.sizeof_gr_complex)
agc = analog.agc2_cc(reference=dB(-4))
agc.set_attack_rate(200 / demod_rate)
agc.set_decay_rate(200 / demod_rate)
if self.__band_filter:
self.connect(
self,
self.__band_filter,
agc)
else:
self.connect(
self,
agc)
self.connect(agc, sink)
def __init__(self, mode='433', input_rate=0, context=None):
assert input_rate > 0
assert context is not None
gr.hier_block2.__init__(self,
type(self).__name__,
gr.io_signature(1, 1, gr.sizeof_gr_complex),
gr.io_signature(0, 0, 0))
# The input bandwidth chosen is not primarily determined by the bandwidth of the input signals, but by the frequency error of the transmitters. Therefore it is not too critical, and we can choose the exact rate to make the filtering easy.
if input_rate <= upper_preferred_demod_rate:
# Skip having a filter at all.
self.__band_filter = None
demod_rate = input_rate
else:
# TODO: This gunk is very similar to the stuff that MultistageChannelFilter does. See if we can share some code.
lower_rate = input_rate
lower_rate_prev = None
while lower_rate > upper_preferred_demod_rate and lower_rate != lower_rate_prev:
lower_rate_prev = lower_rate
if lower_rate % 5 == 0 and lower_rate > upper_preferred_demod_rate * 3:
lower_rate /= 5
elif lower_rate % 2 == 0:
lower_rate /= 2
else:
# non-integer ratio
lower_rate = upper_preferred_demod_rate
break
demod_rate = lower_rate
self.__band_filter = MultistageChannelFilter(
input_rate=input_rate,
output_rate=demod_rate,
cutoff_freq=demod_rate * 0.4,
transition_width=demod_rate * 0.2)
# Subprocess
# using /usr/bin/env because twisted spawnProcess doesn't support path search
# pylint: disable=no-member
process = the_reactor.spawnProcess(
RTL433ProcessProtocol(context.output_message),
'/usr/bin/env',
env=None, # inherit environment
args=[
b'env',
b'rtl_433',
b'-F',
b'json',
b'-r',
b'-', # read from stdin
b'-m',
b'3', # complex float input
b'-s',
str(demod_rate),
],
childFDs={
0: 'w',
1: 'r',
2: 2
})
sink = make_sink_to_process_stdin(process,
itemsize=gr.sizeof_gr_complex)
agc = analog.agc2_cc(reference=dB(-4))
agc.set_attack_rate(200 / demod_rate)
agc.set_decay_rate(200 / demod_rate)
if self.__band_filter:
self.connect(self, self.__band_filter, agc)
else:
self.connect(self, agc)
self.connect(agc, sink)
