def __init__(self, usrp_offset):
gr.flow_graph.__init__(self)
print "decim = %d, gain = %d, offset = %.2f" % (decim, gain, usrp_offset)
print "filter center %.2f, filter width %.2f" % (xcf, xtw)
u = usrp.source_c(decim_rate=decim)
s = usrp.pick_subdev(u, (usrp_dbid.DBS_RX,))
u.set_mux(usrp.determine_rx_mux_value(u, s))
subdev = usrp.selected_subdev(u, s)
if subdev.dbid() != usrp_dbid.DBS_RX:
raise Exception("dbs daughterboard not detected!")
subdev.set_gain(gain)
sps = u.adc_freq() / u.decim_rate()
if sps < 2 * gsm_rate:
raise Exception("sample rate too low")
u.tune(0, subdev, c0 + usrp_offset)
xt = gr.firdes.low_pass(1.0, sps, xcf, xtw, gr.firdes.WIN_HAMMING)
xf = gr.fir_filter_ccf(1, xt)
self.gs = gs = gssm.sink(sps)
self.connect(u, xf, gs)
def __init__(self, usrp_offset):
gr.top_block.__init__(self)
u = usrp.source_c(decim_rate = decim)
s = usrp.pick_subdev(u, (usrp_dbid.DBS_RX,))
u.set_mux(usrp.determine_rx_mux_value(u, s))
subdev = usrp.selected_subdev(u, s)
if subdev.dbid() != usrp_dbid.DBS_RX:
raise Exception('dbs daughterboard not detected!')
subdev.set_gain(gain)
sps = u.adc_freq() / u.decim_rate()
if sps < 2 * gsm_rate:
raise Exception('sample rate too low')
u.tune(0, subdev, c0 + usrp_offset)
xcf = 150e3
xtw = 50e3
xt = gr.firdes.low_pass(1.0, sps, xcf, xtw,
gr.firdes.WIN_HAMMING)
xf = gr.fir_filter_ccf(1, xt)
g = gssm.sink(sps)
self.connect(u, xf, g)
def __init__(self, usrp_offset):
gr.top_block.__init__(self)
u = usrp.source_c(decim_rate=decim)
s = usrp.pick_subdev(u, (usrp_dbid.DBS_RX, ))
u.set_mux(usrp.determine_rx_mux_value(u, s))
subdev = usrp.selected_subdev(u, s)
if subdev.dbid() != usrp_dbid.DBS_RX:
raise Exception('dbs daughterboard not detected!')
subdev.set_gain(gain)
sps = u.adc_freq() / u.decim_rate()
if sps < 2 * gsm_rate:
raise Exception('sample rate too low')
u.tune(0, subdev, c0 + usrp_offset)
xcf = 150e3
xtw = 50e3
xt = gr.firdes.low_pass(1.0, sps, xcf, xtw, gr.firdes.WIN_HAMMING)
xf = gr.fir_filter_ccf(1, xt)
g = gssm.sink(sps)
self.connect(u, xf, g)
def __init__(self, fname): gr.flow_graph.__init__(self) src = gr.file_source(gr.sizeof_gr_complex, fname) self.gs = gs = gssm.sink(sps) self.connect(src, gs)
