SoapySDR Basic example, modified for airspy on BBB, BeagleBoardUbuntu 18.04.2 (https://github.com/pothosware/SoapySDR/wiki/PythonSupport)

log_test_soapysdr_basicexaple.txt

ubuntu@arm:~$ python3 test_soapysdr_basicexaple.py
{device_id=0, driver=airspy, label=AIRSPY [26a464dc:286c2693], serial=26a464dc:286c2693}
('RX',)
('LNA', 'MIX', 'VGA')
2.4e+07, 1.8e+09
[INFO] Using format CF32.
-1
0
0
-1
0
0
-1
0
0
-1
0
0
-1
0
0
1024
32
0
1024
32
0
1024
32
0
1024
32
0
1024
32
0

test_soapysdr_basicexaple.py

# Basic example modified only args for airspy
# https://github.com/pothosware/SoapySDR/wiki/PythonSupport
#
import SoapySDR
from SoapySDR import * #SOAPY_SDR_ constants
import numpy #use numpy for buffers

#enumerate devices
results = SoapySDR.Device.enumerate()
for result in results: print(result)

#create device instance
#args can be user defined or from the enumeration result
# args = dict(driver="rtlsdr")
args = dict(driver="airspy")
sdr = SoapySDR.Device(args)

#query device info
print(sdr.listAntennas(SOAPY_SDR_RX, 0))
print(sdr.listGains(SOAPY_SDR_RX, 0))
freqs = sdr.getFrequencyRange(SOAPY_SDR_RX, 0)
for freqRange in freqs: print(freqRange)

#apply settings
sdr.setSampleRate(SOAPY_SDR_RX, 0, 1e6)
sdr.setFrequency(SOAPY_SDR_RX, 0, 912.3e6)

#setup a stream (complex floats)
rxStream = sdr.setupStream(SOAPY_SDR_RX, SOAPY_SDR_CF32)
sdr.activateStream(rxStream) #start streaming

#create a re-usable buffer for rx samples
buff = numpy.array([0]*1024, numpy.complex64)

#receive some samples
for i in range(10):
    sr = sdr.readStream(rxStream, [buff], len(buff))
    print(sr.ret) #num samples or error code
    print(sr.flags) #flags set by receive operation
    print(sr.timeNs) #timestamp for receive buffer

#shutdown the stream
sdr.deactivateStream(rxStream) #stop streaming
sdr.closeStream(rxStream)