Hello community,
I have a project running on an USRP N210 (a flowgraph consisting of several OOT modules written all in C++).
I want to run the same project on an USRP B200-mini. I assumed that I would only need to modify the uhd_source and uhd_sink configuration in the /apps/main.py file
(the rest of the project is bascially C++ code which should be independent on the platform).
However, my usrp200-mini seems to work properly for the first command transmitted, and then shuts down (the transmitted signal drops to 0).
Any help would be appreciated. Thank you very much for your time.
Configuration for USRP N210+SBX
# Configure usrp source
def u_source(self):
self.source = uhd.usrp_source(
device_addr=self.usrp_address_source,
stream_args=uhd.stream_args(
cpu_format="fc32",
channels=range(1),
),
)
self.source.set_samp_rate(self.adc_rate)
self.source.set_center_freq(self.freq, 0)
self.source.set_gain(self.rx_gain, 0)
self.source.set_antenna("RX2", 0)
self.source.set_auto_dc_offset(False) # Uncomment this line for SBX daughterboard
# Configure usrp sink
def u_sink(self):
self.sink = uhd.usrp_sink(
device_addr=self.usrp_address_sink,
stream_args=uhd.stream_args(
cpu_format="fc32",
channels=range(1),
)
)
self.sink.set_samp_rate(self.dac_rate)
self.sink.set_center_freq(self.freq, 0)
self.sink.set_gain(self.tx_gain, 0)
self.sink.set_antenna("TX/RX", 0)
def __init__(self, myfreq):
gr.top_block.__init__(self)
self.dac_rate = 100e6/50 # DAC rate
self.adc_rate = 100e6/26 # ADC rate
self.freq = myfreq
self.rx_gain = -5
self.tx_gain = 25
self.usrp_address_source = "addr=192.168.10.105"
self.usrp_address_sink = "addr=192.168.10.105"
Configuration for USRPN210+SBX
self.source = uhd.usrp_source(
device_addr=self.usrp_address_source,
stream_args=uhd.stream_args(
cpu_format="fc32",
channels=range(1),
),
)
self.source.set_samp_rate(self.adc_rate)
self.source.set_center_freq(self.freq, 0)
self.source.set_gain(self.rx_gain, 0)
self.source.set_antenna("RX2", 0)
self.source.set_auto_dc_offset(False)
# Configure usrp sink
def u_sink(self):
self.sink = uhd.usrp_sink(
device_addr=self.usrp_address_sink,
stream_args=uhd.stream_args(
cpu_format="fc32",
channels=range(1),
)
)
self.sink.set_samp_rate(self.dac_rate)
self.sink.set_center_freq(self.freq, 0)
self.sink.set_gain(self.tx_gain, 0)
self.sink.set_antenna("TX/RX", 0)
def __init__(self, myfreq):
gr.top_block.__init__(self)
self.dac_rate = 100e6/44 # DAC rate
self.adc_rate = 100e6/44 # ADC rate
self.rx_gain = 300
self.tx_gain = 300
self.usrp_address_source = "serial=31861F8"
self.usrp_address_sink = "serial=31861F8"
--
Laura Arjona
Paul G. Allen School of Computer Science & Engineering
185 E Stevens Way NE
University of Washington
Seattle, WA 98195-2350