ad77681 pyadi-iio support

Implemented ad7768-1 pyadi-iio device driver class and example script

Signed-off-by: MPhalke <[email protected]>

adi/__init__.py

@@ -49,6 +49,7 @@
 from adi.ad7689 import ad7689
 from adi.ad7746 import ad7746
 from adi.ad7768 import ad7768
+from adi.ad7768_1 import ad7768_1
 from adi.ad7799 import ad7799
 from adi.ad9081 import ad9081
 from adi.ad9081_mc import QuadMxFE, ad9081_mc

adi/ad7768_1.py

@@ -0,0 +1,166 @@
+# Copyright (C) 2023 Analog Devices, Inc.
+#
+# All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or without modification,
+# are permitted provided that the following conditions are met:
+#     - Redistributions of source code must retain the above copyright
+#       notice, this list of conditions and the following disclaimer.
+#     - Redistributions in binary form must reproduce the above copyright
+#       notice, this list of conditions and the following disclaimer in
+#       the documentation and/or other materials provided with the
+#       distribution.
+#     - Neither the name of Analog Devices, Inc. nor the names of its
+#       contributors may be used to endorse or promote products derived
+#       from this software without specific prior written permission.
+#     - The use of this software may or may not infringe the patent rights
+#       of one or more patent holders.  This license does not release you
+#       from the requirement that you obtain separate licenses from these
+#       patent holders to use this software.
+#     - Use of the software either in source or binary form, must be run
+#       on or directly connected to an Analog Devices Inc. component.
+#
+# THIS SOFTWARE IS PROVIDED BY ANALOG DEVICES "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
+# INCLUDING, BUT NOT LIMITED TO, NON-INFRINGEMENT, MERCHANTABILITY AND FITNESS FOR A
+# PARTICULAR PURPOSE ARE DISCLAIMED.
+#
+# IN NO EVENT SHALL ANALOG DEVICES BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+# EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, INTELLECTUAL PROPERTY
+# RIGHTS, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+# BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+# STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF
+# THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+
+from decimal import Decimal
+
+import numpy as np
+from adi.attribute import attribute
+from adi.context_manager import context_manager
+from adi.rx_tx import rx
+
+
+class ad7768_1(rx, context_manager):
+
+    """ AD7768-1 ADC """
+
+    _complex_data = False
+    channel = []  # type: ignore
+    _device_name = ""
+
+    def __init__(self, uri="", device_name=""):
+        """Constructor for ad7768_1 class."""
+        context_manager.__init__(self, uri, self._device_name)
+
+        compatible_parts = ["ad7768-1"]
+
+        self._ctrl = None
+
+        if not device_name:
+            device_name = compatible_parts[0]
+        else:
+            if device_name not in compatible_parts:
+                raise Exception(f"Not a compatible device: {device_name}")
+
+        # Select the device matching device_name as working device
+        for device in self._ctx.devices:
+            if device.name == device_name:
+                self._ctrl = device
+                self._rxadc = device
+                break
+
+        if not self._ctrl:
+            raise Exception("Error in selecting matching device")
+
+        if not self._rxadc:
+            raise Exception("Error in selecting matching device")
+
+        for ch in self._ctrl.channels:
+            name = ch._id
+            self._rx_channel_names.append(name)
+            self.channel.append(self._channel(self._ctrl, name))
+
+        rx.__init__(self)
+
+
+    @property
+    def sampling_frequency(self):
+        """Get sampling frequency."""
+        return self._get_iio_dev_attr("sampling_frequency")
+
+    @sampling_frequency.setter
+    def sampling_frequency(self, rate):
+        """Set sampling frequency."""
+        self._set_iio_dev_attr("sampling_frequency", rate)
+
+
+    class _channel(attribute):
+
+        """ ad7768-1 channel """
+
+        def __init__(self, ctrl, channel_name):
+            self.name = channel_name
+            self._ctrl = ctrl
+
+        @property
+        def raw(self):
+            """Get channel raw value."""
+            return self._get_iio_attr(self.name, "raw", False)
+
+        @property
+        def scale(self):
+            """Get channel scale."""
+            return float(self._get_iio_attr_str(self.name, "scale", False))
+
+        @scale.setter
+        def scale(self, value):
+            """Set channel scale."""
+            self._set_iio_attr(self.name, "scale", False, str(Decimal(value).real))
+
+        @property
+        def offset(self):
+            """Get channel offset."""
+            return float(self._get_iio_attr_str(self.name, "offset", False))
+
+        @offset.setter
+        def offset(self, value):
+            """Set channel offset."""
+            self._set_iio_attr(self.name, "offset", False, str(Decimal(value).real))
+
+        @property
+        def filter_low_pass_3db_frequency_avail(self):
+            """Get available low pass filter 3db frequencies."""
+            return self._get_iio_attr_str(self.name, "filter_low_pass_3db_frequency_available", False)
+
+        @property
+        def filter_low_pass_3db_frequency(self):
+            """Get low pass filter 3db frequency."""
+            return self._get_iio_attr_str(self.name, "filter_low_pass_3db_frequency", False)
+
+        @filter_low_pass_3db_frequency.setter
+        def filter_low_pass_3db_frequency(self, freq):
+            """Set low pass filter 3db frequency."""
+            if freq in self.filter_low_pass_3db_frequency_avail:
+                self._set_iio_attr(self.name, "filter_low_pass_3db_frequency", False, freq)
+            else:
+                raise ValueError(
+                    "Error: Low pass filter 3db frequency not supported \nUse one of: "
+                    + str(self.filter_low_pass_3db_frequency_avail)
+                )
+
+    def to_volts(self, index, val):
+        """Converts raw value to SI."""
+        _scale = self.channel[index].scale
+
+        ret = None
+
+        if isinstance(val, np.int16):
+            ret = val * _scale
+
+        if isinstance(val, np.ndarray):
+            ret = [x * _scale for x in val]
+
+        if ret is None:
+            raise Exception("Error in converting to actual voltage")
+
+        return ret

doc/source/devices/adi.ad7768_1.rst

@@ -0,0 +1,7 @@
+ad7768_1
+=================
+
+.. automodule:: adi.ad7768_1
+   :members:
+   :undoc-members:
+   :show-inheritance:

doc/source/devices/index.rst

@@ -25,6 +25,7 @@ Supported Devices
    adi.ad7689
    adi.ad7746
    adi.ad7768
+   adi.ad7768_1
    adi.ad777x
    adi.ad7799
    adi.ad9081

examples/ad7768_1_example.py

@@ -0,0 +1,81 @@
+# Copyright (C) 2023 Analog Devices, Inc.
+#
+# All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or without modification,
+# are permitted provided that the following conditions are met:
+#     - Redistributions of source code must retain the above copyright
+#       notice, this list of conditions and the following disclaimer.
+#     - Redistributions in binary form must reproduce the above copyright
+#       notice, this list of conditions and the following disclaimer in
+#       the documentation and/or other materials provided with the
+#       distribution.
+#     - Neither the name of Analog Devices, Inc. nor the names of its
+#       contributors may be used to endorse or promote products derived
+#       from this software without specific prior written permission.
+#     - The use of this software may or may not infringe the patent rights
+#       of one or more patent holders.  This license does not release you
+#       from the requirement that you obtain separate licenses from these
+#       patent holders to use this software.
+#     - Use of the software either in source or binary form, must be run
+#       on or directly connected to an Analog Devices Inc. component.
+#
+# THIS SOFTWARE IS PROVIDED BY ANALOG DEVICES "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
+# INCLUDING, BUT NOT LIMITED TO, NON-INFRINGEMENT, MERCHANTABILITY AND FITNESS FOR A
+# PARTICULAR PURPOSE ARE DISCLAIMED.
+#
+# IN NO EVENT SHALL ANALOG DEVICES BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+# EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, INTELLECTUAL PROPERTY
+# RIGHTS, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+# BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+# STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF
+# THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+import sys
+from time import sleep
+
+import matplotlib.pyplot as plt
+from adi import ad7768_1
+
+# Optionally pass URI as command line argument,
+# else use default ip:analog.local
+my_uri = sys.argv[1] if len(sys.argv) >= 2 else "ip:analog.local"
+print("uri: " + str(my_uri))
+
+my_adc = ad7768_1(uri=my_uri)
+my_adc.rx_buffer_size = 1024
+
+# Set Sample Rate. Options are 1ksps to 256ksps, 1k* power of 2.
+# Note that sample rate and power mode are not orthogonal - refer
+# to datasheet.
+my_adc.sampling_frequency = 8000
+
+# Choose output format:
+# my_adc.rx_output_type = "raw"
+my_adc.rx_output_type = "SI"
+
+# Verify settings:
+print("Sampling Frequency: ", my_adc.sampling_frequency)
+print("Enabled Channels: ", my_adc.rx_enabled_channels)
+
+
+plt.clf()
+sleep(0.5)
+data = my_adc.rx()
+for ch in my_adc.rx_enabled_channels:
+    plt.plot(range(0, len(data[0])), data[ch], label="voltage" + str(ch))
+plt.xlabel("Data Point")
+if my_adc.rx_output_type == "SI":
+    plt.ylabel("Millivolts")
+else:
+    plt.ylabel("ADC counts")
+plt.legend(
+    bbox_to_anchor=(0.0, 1.02, 1.0, 0.102),
+    loc="lower left",
+    ncol=4,
+    mode="expand",
+    borderaxespad=0.0,
+)
+plt.pause(0.01)
+
+del my_adc

supported_parts.md

@@ -70,6 +70,7 @@
 - AD7193
 - AD7195
 - AD7768
+- AD7768-1
 - AD7770
 - AD7771
 - AD7779

tasks.py

@@ -229,6 +229,7 @@ def checkemulation(c):
         "ad7606",
         "ad7689",
         "ad7746",
+        "ad7768-1",
         "ad7799",
         "ad9083",
         "ad9094",

test/test_ad7768_1.py

@@ -0,0 +1,11 @@
+import pytest
+
+hardware = "ad7768-1"
+classname = "adi.ad7768_1"
+
+
+#########################################
+@pytest.mark.iio_hardware(hardware)
+@pytest.mark.parametrize("classname", [(classname)])
+def test_ad7768_1_rx_data(test_dma_rx, iio_uri, classname, channel):
+    test_dma_rx(iio_uri, classname, channel)