ad9694.py

#!/usr/bin/env python
#
# Copyright (C) 2021 Analog Devices, Inc.
# Author: Travis Collins <travis.collins@analog.com>
#
# Licensed under the GPL-2.

import sys
try:
    import iio
except:
    # By default the iio python bindings are not in path
    sys.path.append('/usr/lib/python2.7/site-packages/')
    import iio

import numpy as np
try:
    import matplotlib.pyplot as plt
    do_plots = True
except:
    print("To view plots install matplotlib")
    do_plots = False

# Setup contexts
try:
    ctx = iio.Context('ip:192.168.2.1')
except:
    print("No device found")
    sys.exit(0)

rxadc = ctx.find_device("axi-ad9694-hpc")

# Enable all channels
v0 = rxadc.find_channel("voltage0")
v1 = rxadc.find_channel("voltage1")
v2 = rxadc.find_channel("voltage2")
v3 = rxadc.find_channel("voltage3")
v0.enabled = True
v1.enabled = True
v2.enabled = True
v3.enabled = True

# Create buffer for RX data
rxbuf = iio.Buffer(rxadc, 2**15, False)

# Collect data
data = [np.array([]),np.array([]),np.array([]),np.array([])]

for i in range(10):
  rxbuf.refill()
  data = rxbuf.read()
  x = np.frombuffer(data,dtype=np.int16)
  for k in range(4):
      data[k] = np.append(data[k],x[k::4])

# Plot
if do_plots:
    plt.plot(data)
    plt.xlabel("Samples")
    plt.ylabel("Amplitude [ADC Codes]")
    plt.show()