64 lines
1.3 KiB
Python
64 lines
1.3 KiB
Python
# Copyright (C) 2019 Analog Devices, Inc.
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#
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# SPDX short identifier: ADIBSD
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# I'm not sure why but sometimes I need to run this once to make the rest of my scripts work.
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# Probably just me running things manually out of order or something but I'm throwing this in here until I verify.
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import time
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import adi
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import matplotlib.pyplot as plt
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import numpy as np
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from scipy import signal
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# Create radio
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sdr = adi.Pluto(uri="ip:192.168.3.1")
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# Configure properties
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sdr.rx_rf_bandwidth = 4000000
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sdr.rx_lo = 2000000000
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sdr.tx_lo = 2000000000
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sdr.tx_cyclic_buffer = True
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sdr.tx_hardwaregain_chan0 = -30
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sdr.gain_control_mode_chan0 = "slow_attack"
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# Read properties
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print("RX LO %s" % (sdr.rx_lo))
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# Create a sinewave waveform
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fs = int(sdr.sample_rate)
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print(fs)
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N = 1024
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fc = int(-3000000 / (fs / N)) * (fs / N)
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ts = 1 / float(fs)
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t = np.arange(0, N * ts, ts)
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i = np.cos(2 * np.pi * t * fc) * 2**14
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q = np.sin(2 * np.pi * t * fc) * 2**14
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iq = i + 1j * q
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# Send data
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sdr.tx(iq)
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# Collect data
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for r in range(20):
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x = sdr.rx()
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f, Pxx_den = signal.periodogram(x, fs, return_onesided=False)
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plt.clf()
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plt.semilogy(f, Pxx_den)
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plt.ylim([1e-7, 1e2])
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plt.xlabel("frequency [Hz]")
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plt.ylabel("PSD [V**2/Hz]")
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plt.grid(True)
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plt.draw()
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plt.pause(0.05)
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time.sleep(0.1)
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plt.show()
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plt.plot(np.real(x))
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plt.plot(np.imag(x))
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plt.show()
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