ad77681 pyadi-iio support

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

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

adi/__init__.py

@@ -21,6 +21,7 @@
 from adi.ad7689 import ad7689
 from adi.ad7746 import ad7746
 from adi.ad7768 import ad7768, ad7768_4
+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 +1,140 @@
+# Copyright (C) 2020-2023 Analog Devices, Inc.
+#
+# SPDX short identifier: ADIBSD
+
+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 self._get_iio_attr(self.name, "scale", False)
+
+        @scale.setter
+        def scale(self, value):
+            """Set channel scale."""
+            self._set_iio_attr(self.name, "scale", False, Decimal(value).real)
+
+        @property
+        def offset(self):
+            """Get channel offset."""
+            return self._get_iio_attr(self.name, "offset", False)
+
+        @offset.setter
+        def offset(self, value):
+            """Set channel offset."""
+            self._set_iio_attr(self.name, "offset", False, value)
+
+        @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

@@ -26,6 +26,7 @@ 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

@@ -72,6 +72,7 @@
 - AD7291
 - AD7768
 - AD7768-4
+- AD7768-1
 - AD7770
 - AD7771
 - AD7779

test/emu/devices/ad7768_1.xml

@@ -0,0 +1 @@
+<?xml version="1.0" encoding="utf-8"?><!DOCTYPE context [<!ELEMENT context (device | context-attribute)*><!ELEMENT context-attribute EMPTY><!ELEMENT device (channel | attribute | debug-attribute | buffer-attribute)*><!ELEMENT channel (scan-element?, attribute*)><!ELEMENT attribute EMPTY><!ELEMENT scan-element EMPTY><!ELEMENT debug-attribute EMPTY><!ELEMENT buffer-attribute EMPTY><!ATTLIST context name CDATA #REQUIRED description CDATA #IMPLIED><!ATTLIST context-attribute name CDATA #REQUIRED value CDATA #REQUIRED><!ATTLIST device id CDATA #REQUIRED name CDATA #IMPLIED><!ATTLIST channel id CDATA #REQUIRED type (input|output) #REQUIRED name CDATA #IMPLIED><!ATTLIST scan-element index CDATA #REQUIRED format CDATA #REQUIRED scale CDATA #IMPLIED><!ATTLIST attribute name CDATA #REQUIRED filename CDATA #IMPLIED value CDATA #IMPLIED><!ATTLIST debug-attribute name CDATA #REQUIRED value CDATA #IMPLIED><!ATTLIST buffer-attribute name CDATA #REQUIRED value CDATA #IMPLIED>]><context name="network" description="10.121.135.62 Linux analog 5.10.0-98759-ga60a72f32cb9 #128 SMP PREEMPT Fri Jun 16 00:19:22 EEST 2023 armv7l" ><context-attribute name="hdl_system_id" value="[ad77681evb] on [zed] git [ecd880d44cdd000691283f2edbd31aa52d6ccc3e] clean [2020-11-10 23:42:11] UTC" /><context-attribute name="hw_model" value="on Xilinx Zynq ZED" /><context-attribute name="hw_carrier" value="Xilinx Zynq ZED" /><context-attribute name="ace,guid" value="1958558906" /><context-attribute name="local,kernel" value="5.10.0-98759-ga60a72f32cb9" /><context-attribute name="uri" value="ip:10.121.135.62" /><context-attribute name="ip,ip-addr" value="10.121.135.62" /><device id="iio:device0" name="xadc" ><channel id="voltage5" name="vccoddr" type="input" ><attribute name="raw" filename="in_voltage5_vccoddr_raw" value="2033" /><attribute name="scale" filename="in_voltage5_vccoddr_scale" value="0.732421875" /></channel><channel id="voltage0" name="vccint" type="input" ><attribute name="raw" filename="in_voltage0_vccint_raw" value="1377" /><attribute name="scale" filename="in_voltage0_vccint_scale" value="0.732421875" /></channel><channel id="voltage4" name="vccpaux" type="input" ><attribute name="raw" filename="in_voltage4_vccpaux_raw" value="2439" /><attribute name="scale" filename="in_voltage4_vccpaux_scale" value="0.732421875" /></channel><channel id="temp0" type="input" ><attribute name="offset" filename="in_temp0_offset" value="-2219" /><attribute name="raw" filename="in_temp0_raw" value="2554" /><attribute name="scale" filename="in_temp0_scale" value="123.040771484" /></channel><channel id="voltage7" name="vrefn" type="input" ><attribute name="raw" filename="in_voltage7_vrefn_raw" value="-11" /><attribute name="scale" filename="in_voltage7_vrefn_scale" value="0.732421875" /></channel><channel id="voltage1" name="vccaux" type="input" ><attribute name="raw" filename="in_voltage1_vccaux_raw" value="2437" /><attribute name="scale" filename="in_voltage1_vccaux_scale" value="0.732421875" /></channel><channel id="voltage2" name="vccbram" type="input" ><attribute name="raw" filename="in_voltage2_vccbram_raw" value="1375" /><attribute name="scale" filename="in_voltage2_vccbram_scale" value="0.732421875" /></channel><channel id="voltage3" name="vccpint" type="input" ><attribute name="raw" filename="in_voltage3_vccpint_raw" value="1370" /><attribute name="scale" filename="in_voltage3_vccpint_scale" value="0.732421875" /></channel><channel id="voltage6" name="vrefp" type="input" ><attribute name="raw" filename="in_voltage6_vrefp_raw" value="1692" /><attribute name="scale" filename="in_voltage6_vrefp_scale" value="0.732421875" /></channel><attribute name="sampling_frequency" value="961538" /></device><device id="iio_sysfs_trigger" ><attribute name="add_trigger" value="ERROR" /><attribute name="remove_trigger" value="ERROR" /></device></context>

test/emu/hardware_map.yml

@@ -342,6 +342,15 @@ ad7768-4:
       - data_devices:
           - iio:device0
 
+ad7768_1:
+  - ad7768-1
+  - pyadi_iio_class_support:
+      - ad7768_1
+  - emulate:
+      - filename: ad7768_1.xml
+      - data_devices:
+          - iio:device0
+
 ad5592r:
   - ad5592r
   - pyadi_iio_class_support:

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)])
+@pytest.mark.parametrize("channel", [0])
+def test_ad7768_1_rx_data(test_dma_rx, iio_uri, classname, channel):
+    test_dma_rx(iio_uri, classname, channel)