def __init__(self):
gr.top_block.__init__(self)
amplitude = 30000 # 1 2150 10000
rx_out = gr.file_sink(gr.sizeof_gr_complex, "./rx.out")
interp_rate = 128 # tx_samprate = 1M
# dec_rate = 8 # rx_samprate = 8M
dec_rate = 16 #16 # rx_samprate = 4M
sw_dec = 4 #2
# num_taps = int(64000 / ( (dec_rate * 4) * 40 )) #Filter matched to 1/4 of the 40 kHz tag cycle
num_taps = int(64000 / ( (dec_rate * 4) * 256 )) #Filter matched to 1/4 of the 256 kHz tag cycle
taps = [complex(1,1)] * num_taps
matched_filt = gr.fir_filter_ccc(sw_dec, taps);
to_mag = gr.complex_to_mag()
center = rfid.center_ff(4)
mm = rfid.clock_recovery_zc_ff(4,1);
self.reader = rfid.reader_f(int(128e6/interp_rate));
tag_decoder = rfid.tag_decoder_f()
command_gate = rfid.command_gate_cc(12, 60, 64000000 / dec_rate / sw_dec)
to_complex = gr.float_to_complex()
amp = gr.multiply_const_ff(amplitude)
##################################################
# Blocks
##################################################
freq = 915e6 #915e6
rx_gain = 24 #xjtu
tx = uhd.usrp_sink(
device_addr="",
io_type=uhd.io_type.COMPLEX_FLOAT32,
num_channels=1,
)
tx.set_samp_rate(128e6/interp_rate)
p = tx.get_gain_range()
tx.set_gain(float(p.start() + p.stop()) / 4)
#r = tx.set_center_freq(freq, 0)
t = tx.set_samp_rate(64e6/dec_rate)
tune_req_tx = uhd.tune_request_t(freq,128e6/interp_rate/2)
tt = tx.set_center_freq(tune_req_tx)
rx = uhd.usrp_source(
options.args,
io_type=uhd.io_type.COMPLEX_FLOAT32,
num_channels=1,
)
r = rx.set_samp_rate(64e6/dec_rate)
tune_req = uhd.tune_request_t(freq,64e6/dec_rate)
x = rx.set_center_freq(tune_req)
if not x:
print "Couldn't set rx freq"
#g = rx.get_gain_range()
rx.set_gain(rx_gain)
print "***************Info******************"
print "-----tx: get sample rate:"
print (tx.get_samp_rate())
print "tx: get freq:"
print (tx.get_center_freq())
print "-----rx.detail"
print rx.detail()
print "rx: get samp rate"
print (rx.get_samp_rate())
print "rx: get freq "
print (rx.get_center_freq())
print "rx: get gain "
print (rx.get_gain())
print "***************END******************"
command_gate.set_ctrl_out(self.reader.ctrl_q())
tag_decoder.set_ctrl_out(self.reader.ctrl_q())
#########Build Graph
self.connect(rx, matched_filt)
self.connect(matched_filt, command_gate)
self.connect(command_gate, to_mag)
#self.connect(command_gate, agc)
#self.connect(agc, to_mag)
self.connect(to_mag, center, mm, tag_decoder)
#self.connect(to_mag, center, matched_filt_tag_decode, tag_decoder)
self.connect(tag_decoder, self.reader)
self.connect(self.reader, amp)
self.connect(amp, to_complex)
self.connect(to_complex, tx)
#################
#self.connect(command_gate, commandGate_out)
self.connect(rx, rx_out)
def __init__(self):
gr.top_block.__init__(self)
amplitude = 30000
filt_out = gr.file_sink(gr.sizeof_gr_complex, "./filt.out")
filt2_out = gr.file_sink(gr.sizeof_gr_complex, "./filt2.out")
ffilt_out = gr.file_sink(gr.sizeof_float, "./ffilt.out")
ffilt2_out = gr.file_sink(gr.sizeof_float, "./ffilt2.out")
interp_rate = 128
dec_rate = 8
sw_dec = 4
num_taps = int(64000 / ( (dec_rate * 4) * 256 )) #Filter matched to 1/4 of the 256 kHz tag cycle
taps = [complex(1,1)] * num_taps
matched_filt = gr.fir_filter_ccc(sw_dec, taps);
agc = gr.agc2_cc(0.3, 1e-3, 1, 1, 100)
to_mag = gr.complex_to_mag()
center = rfid.center_ff(4)
omega = 2
mu = 0.25
gain_mu = 0.25
gain_omega = .25 * gain_mu * gain_mu
omega_relative_limit = .05
mm = gr.clock_recovery_mm_ff(omega, gain_omega, mu, gain_mu, omega_relative_limit)
self.reader = rfid.reader_f(int(128e6/interp_rate));
tag_decoder = rfid.tag_decoder_f()
command_gate = rfid.command_gate_cc(12, 60, 64000000 / dec_rate / sw_dec)
to_complex = gr.float_to_complex()
amp = gr.multiply_const_ff(amplitude)
f_sink = gr.file_sink(gr.sizeof_gr_complex, 'f_sink.out');
f_sink2 = gr.file_sink(gr.sizeof_gr_complex, 'f_sink2.out');
#TX
freq = 915e6
rx_gain = 20
tx = usrp.sink_c(fusb_block_size = 1024, fusb_nblocks=8)
tx.set_interp_rate(interp_rate)
tx_subdev = (0,0)
tx.set_mux(usrp.determine_tx_mux_value(tx, tx_subdev))
subdev = usrp.selected_subdev(tx, tx_subdev)
subdev.set_enable(True)
subdev.set_gain(subdev.gain_range()[2])
t = tx.tune(subdev.which(), subdev, freq)
if not t:
print "Couldn't set tx freq"
#End TX
#RX
rx = usrp.source_c(0, dec_rate, fusb_block_size = 512 * 4, fusb_nblocks = 16)
rx_subdev_spec = (1,0)
rx.set_mux(usrp.determine_rx_mux_value(rx, rx_subdev_spec))
rx_subdev = usrp.selected_subdev(rx, rx_subdev_spec)
rx_subdev.set_gain(rx_gain)
rx_subdev.set_auto_tr(False)
rx_subdev.set_enable(True)
r = usrp.tune(rx, 0, rx_subdev, freq)
self.rx = rx
if not r:
print "Couldn't set rx freq"
#End RX
command_gate.set_ctrl_out(self.reader.ctrl_q())
tag_decoder.set_ctrl_out(self.reader.ctrl_q())
agc2 = gr.agc2_ff(0.3, 1e-3, 1, 1, 100)
#########Build Graph
self.connect(rx, matched_filt)
self.connect(matched_filt, command_gate)
self.connect(command_gate, agc)
self.connect(agc, to_mag)
self.connect(to_mag, center, agc2, mm, tag_decoder)
self.connect(tag_decoder, self.reader, amp, to_complex, tx);
#################
self.connect(matched_filt, filt_out)
def __init__(self):
# GUI setup
grc_wxgui.top_block_gui.__init__(self, title="Grc Wisp Reader")
self.wxgui_scopesink2_0 = scopesink2.scope_sink_f(
self.GetWin(),
title="Scope Plot",
sample_rate=1e6,
v_scale=0,
v_offset=0,
t_scale=0,
ac_couple=False,
xy_mode=False,
num_inputs=1,
trig_mode=gr.gr_TRIG_MODE_AUTO,
y_axis_label="Counts",
)
self.Add(self.wxgui_scopesink2_0.win)
# Constants
amplitude = 1
interp_rate = 128
dec_rate = 16 # dec_rate = 8
sw_dec = 2 # sw_dec = 4
num_taps = int(64000 / ((
dec_rate * 4) * 256 )) #Filter matched to 1/4 of the 256 kHz tag cycle # num_taps = int(64000 / ( (dec_rate * 4) * 40 )) #Filter matched to 1/4 of the 40 kHz tag cycle
#---------------------------
#num_taps==3
#taps =[complex(1,1)] * num_taps = [(1+1j)]*3 = [(1+1j),(1+1j),(1+1j)]
#
#"complex" creates complex numbers
# complex(x,y) = x+yj (x are the real part of the number and y are the complex part of the number)
#
#[complex(x,y)]*size = size tells how many complex numbers will be created
#[complex(1,1)]*3 = [(1+1j),(1+1j),(1+1j)]
#---------------------------
taps = [complex(1, 1)] * num_taps
matched_filt = gr.fir_filter_ccc(sw_dec, taps);
to_mag = gr.complex_to_mag()
center = rfid.center_ff(4) # center = rfid.center_ff(10)
mm = rfid.clock_recovery_zc_ff(4, 1);
self.reader = rfid.reader_f(int(128e6 / interp_rate));
tag_decoder = rfid.tag_decoder_f()
command_gate = rfid.command_gate_cc(12, 60,
64000000 / dec_rate / sw_dec) # command_gate = rfid.command_gate_cc(12, 250, 64000000 / dec_rate / sw_dec)
to_complex = gr.float_to_complex()
amp = gr.multiply_const_ff(amplitude)
##################################################
# Blocks
##################################################
freq = 915e6
rx_gain = 1
# Transmitter setup
tx = uhd.usrp_sink(
device_addr="",
io_type=uhd.io_type.COMPLEX_FLOAT32,
num_channels=1,
)
tx.set_samp_rate(128e6 / interp_rate)
tx.set_center_freq(freq, 0)
# Receiver setup
rx = uhd.usrp_source(
device_addr="",
io_type=uhd.io_type.COMPLEX_FLOAT32,
num_channels=1,
)
rx.set_samp_rate(64e6 / dec_rate)
rx.set_center_freq(freq, 0)
rx.set_gain(rx_gain, 0)
# Command gate
command_gate.set_ctrl_out(self.reader.ctrl_q())
# Tag decoder
tag_decoder.set_ctrl_out(self.reader.ctrl_q())
#########Build Graph
self.connect(rx, matched_filt)
self.connect(matched_filt, command_gate)
self.connect(command_gate, to_mag)
# self.connect(command_gate, agc) # agc = gr.agc2_cc(0.3, 1e-3, 1, 1, 100)
# self.connect(agc, to_mag)
self.connect(to_mag, center, mm, tag_decoder)
# self.connect(to_mag, center, matched_filt_tag_decode, tag_decoder)
self.connect(tag_decoder, self.reader)
self.connect(self.reader, amp)
self.connect(amp, to_complex)
self.connect(to_complex, tx)
def __init__(self):
grc_wxgui.top_block_gui.__init__(self, title="Grc Wisp Reader")
_icon_path = "/usr/share/icons/hicolor/32x32/apps/gnuradio-grc.png"
self.SetIcon(wx.Icon(_icon_path, wx.BITMAP_TYPE_ANY))
self.wxgui_scopesink2_0 = scopesink2.scope_sink_f(
self.GetWin(),
title="Scope Plot",
sample_rate=1e6,
v_scale=0,
v_offset=0,
t_scale=0,
ac_couple=False,
xy_mode=False,
num_inputs=1,
trig_mode=gr.gr_TRIG_MODE_AUTO,
y_axis_label="Counts",
)
self.Add(self.wxgui_scopesink2_0.win)
amplitude = 1
interp_rate = 128
# dec_rate = 8
# sw_dec = 4
dec_rate = 16
sw_dec = 2
# num_taps = int(64000 / ( (dec_rate * 4) * 40 )) #Filter matched to 1/4 of the 40 kHz tag cycle
num_taps = int(64000 / ( (dec_rate * 4) * 256 )) #Filter matched to 1/4 of the 256 kHz tag cycle
taps = [complex(1,1)] * num_taps
matched_filt = gr.fir_filter_ccc(sw_dec, taps);
agc = gr.agc2_cc(0.3, 1e-3, 1, 1, 100)
to_mag = gr.complex_to_mag()
# center = rfid.center_ff(10)
center = rfid.center_ff(4)
omega = 5
mu = 0.25
gain_mu = 0.25
gain_omega = .25 * gain_mu * gain_mu
omega_relative_limit = .05
# mm = digital.clock_recovery_mm_ff(omega, gain_omega, mu, gain_mu, omega_relative_limit)
mm = rfid.clock_recovery_zc_ff(4,1);
self.reader = rfid.reader_f(int(128e6/interp_rate));
tag_decoder = rfid.tag_decoder_f()
# command_gate = rfid.command_gate_cc(12, 250, 64000000 / dec_rate / sw_dec)
command_gate = rfid.command_gate_cc(12, 60, 64000000 / dec_rate / sw_dec)
to_complex = gr.float_to_complex()
amp = gr.multiply_const_ff(amplitude)
##################################################
# Blocks
##################################################
freq = 915e6
rx_gain = 1
tx = uhd.usrp_sink(
device_addr="",
io_type=uhd.io_type.COMPLEX_FLOAT32,
num_channels=1,
)
print "tx: get sample rate:"
print (tx.get_samp_rate())
tx.set_samp_rate(128e6/interp_rate)
print "tx: get sample rate:"
print (tx.get_samp_rate())
r = tx.set_center_freq(freq, 0)
rx = uhd.usrp_source(
device_addr="",
io_type=uhd.io_type.COMPLEX_FLOAT32,
num_channels=1,
)
print "rx: get samp rate"
print (rx.get_samp_rate())
r = rx.set_samp_rate(64e6/dec_rate)
print "rx: get samp rate"
print (rx.get_samp_rate())
r = rx.set_center_freq(freq, 0)
print "rx: get gain "
print (rx.get_gain_range())
r = rx.set_gain(rx_gain, 0)
print "rx: get gain "
print (rx.get_gain())
command_gate.set_ctrl_out(self.reader.ctrl_q())
tag_decoder.set_ctrl_out(self.reader.ctrl_q())
#########Build Graph
self.connect(rx, matched_filt)
self.connect(matched_filt, command_gate)
self.connect(command_gate, to_mag)
# self.connect(command_gate, agc)
# self.connect(agc, to_mag)
self.connect(to_mag, center, mm, tag_decoder)
# self.connect(to_mag, center, matched_filt_tag_decode, tag_decoder)
self.connect(tag_decoder, self.reader)
self.connect(self.reader, amp)
self.connect(amp, to_complex)
self.connect(to_complex, tx)
def __init__(self):
gr.top_block.__init__(self)
amplitude = 5000
interp_rate = 256
dec_rate = 16
sw_dec = 5
num_taps = int(64000 / ( (dec_rate * 4) * 40 )) #Filter matched to 1/4 of the 40 kHz tag cycle
taps = [complex(1,1)] * num_taps
matched_filt = gr.fir_filter_ccc(sw_dec, taps);
agc = gr.agc2_cc(0.3, 1e-3, 1, 1, 100)
to_mag = gr.complex_to_mag()
center = rfid.center_ff(10)
omega = 5
mu = 0.25
gain_mu = 0.25
gain_omega = .25 * gain_mu * gain_mu
omega_relative_limit = .05
mm = gr.clock_recovery_mm_ff(omega, gain_omega, mu, gain_mu, omega_relative_limit)
self.reader = rfid.reader_f(int(128e6/interp_rate));
tag_decoder = rfid.tag_decoder_f()
command_gate = rfid.command_gate_cc(12, 250, 64000000 / dec_rate / sw_dec)
to_complex = gr.float_to_complex()
amp = gr.multiply_const_ff(amplitude)
#output the TX and RX signals only
f_txout = gr.file_sink(gr.sizeof_gr_complex, 'f_txout.out');
f_rxout = gr.file_sink(gr.sizeof_gr_complex, 'f_rxout.out');
#TX
# working frequency at 915 MHz by default and RX Gain of 20
freq = options.center_freq #915e6
rx_gain = options.rx_gain #20
tx = usrp.sink_c(fusb_block_size = 512, fusb_nblocks=4)
tx.set_interp_rate(256)
tx_subdev = (0,0)
tx.set_mux(usrp.determine_tx_mux_value(tx, tx_subdev))
subdev = usrp.selected_subdev(tx, tx_subdev)
subdev.set_enable(True)
subdev.set_gain(subdev.gain_range()[2])
t = tx.tune(subdev.which(), subdev, freq)
if not t:
print "Couldn't set tx freq"
#End TX
#RX
rx = usrp.source_c(0, dec_rate, fusb_block_size = 512, fusb_nblocks = 4)
rx_subdev_spec = (1,0)
rx.set_mux(usrp.determine_rx_mux_value(rx, rx_subdev_spec))
rx_subdev = usrp.selected_subdev(rx, rx_subdev_spec)
rx_subdev.set_gain(rx_gain)
rx_subdev.set_auto_tr(False)
rx_subdev.set_enable(True)
r = usrp.tune(rx, 0, rx_subdev, freq)
self.rx = rx
if not r:
print "Couldn't set rx freq"
#End RX
command_gate.set_ctrl_out(self.reader.ctrl_q())
tag_decoder.set_ctrl_out(self.reader.ctrl_q())
#########Build Graph
self.connect(rx, matched_filt)
self.connect(matched_filt, command_gate)
self.connect(command_gate, agc)
self.connect(agc, to_mag)
self.connect(to_mag, center, mm, tag_decoder)
self.connect(tag_decoder, self.reader, amp, to_complex, tx);
#################
#Output dumps for debug
self.connect(rx, f_rxout);
self.connect(to_complex, f_txout);
