Merge pull request #595 from SaikiranGudla/ad7091r_support

Add support for AD7091R-2, AD7091R-4 and AD7091R-8

Author: tfcollins

adi/__init__.py

@@ -26,6 +26,7 @@
 from adi.ad5754r import ad5754r
 from adi.ad5940 import ad5940
 from adi.ad6676 import ad6676
+from adi.ad7091rx import ad7091rx
 from adi.ad7124 import ad7124
 from adi.ad7134 import ad7134
 from adi.ad7291 import ad7291

adi/ad7091rx.py

@@ -0,0 +1,82 @@
+# Copyright (C) 2025 Analog Devices, Inc.
+#
+# SPDX short identifier: ADIBSD
+
+import numpy as np
+
+from adi.attribute import attribute
+from adi.context_manager import context_manager
+from adi.rx_tx import rx
+
+
+class ad7091rx(rx, context_manager):
+    """AD7091R-2/AD7091R-4/AD7091R-8 SPI interface,
+       2-/4-/8-channel, 12-bit SAR ADC"""
+
+    _complex_data = False
+    channel = []  # type: ignore
+    _device_name = ""
+
+    def __init__(self, uri="", device_name=""):
+
+        context_manager.__init__(self, uri, self._device_name)
+
+        compatible_parts = [
+            "ad7091r-2",
+            "ad7091r-4",
+            "ad7091r-8",
+        ]
+
+        self._ctrl = None
+
+        if not device_name:
+            device_name = compatible_parts[2]
+        else:
+            if device_name not in compatible_parts:
+                raise Exception("Not a compatible device: " + device_name)
+
+        # Selecting the device matching device_name AD7091RX family as working device.
+        for device in self._ctx.devices:
+            if device.name == device_name:
+                self._ctrl = device
+                self._rxadc = device
+                break
+
+        for ch in self._ctrl.channels:
+            name = ch._id
+            self._rx_channel_names.append(name)
+            self.channel.append(self._channel(self._ctrl, name))
+            setattr(self, name, self._channel(self._ctrl, name))
+
+        rx.__init__(self)
+
+    class _channel(attribute):
+        """AD7091R-8/-4/-2 Input Voltage Channels"""
+
+        def __init__(self, ctrl, channel_name):
+            self.name = channel_name
+            self._ctrl = ctrl
+
+        @property
+        def raw(self):
+            """AD7091r channel raw value"""
+            return self._get_iio_attr(self.name, "raw", False)
+
+        @property
+        def scale(self):
+            """AD7091r channel scale"""
+            return float(self._get_iio_attr_str(self.name, "scale", False))
+
+    def to_mvolts(self, index, val):
+        """Converts raw value to mV"""
+        _scale = self.channel[index].scale
+
+        ret = None
+
+        if isinstance(val, np.uint16):
+            ret = val * _scale
+
+        if isinstance(val, np.ndarray):
+            ret = [x * _scale for x in val]
+
+        return ret

doc/source/devices/adi.ad7091rx.rst

@@ -0,0 +1,7 @@
+ad7091rx
+=================
+
+.. automodule:: adi.ad7091rx
+   :members:
+   :undoc-members:
+   :show-inheritance:

doc/source/devices/index.rst

@@ -26,6 +26,7 @@ Supported Devices
    adi.ad5754r
    adi.ad5940
    adi.ad6676
+   adi.ad7091rx
    adi.ad7124
    adi.ad7134
    adi.ad717x

examples/ad7091rx_example.py

@@ -0,0 +1,81 @@
+# Copyright (C) 2025 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 argparse
+
+import numpy as np
+
+from adi.ad7091rx import ad7091rx
+
+
+def main():
+    # Set up argument parser
+    parser = argparse.ArgumentParser(description="AD7091R Example Script")
+    parser.add_argument(
+        "--uri",
+        type=str,
+        help="The URI for the AD7091R device",
+        default="serial:COM7,230400,8n1",
+    )
+    parser.add_argument(
+        "--device_name",
+        type=str,
+        choices=["ad7091r-2", "ad7091r-4", "ad7091r-8"],
+        help="The device name (Supported devices are ad7091r-2, ad7091r-4, ad7091r-8)",
+        default="ad7091r-8",
+    )
+
+    # Parse arguments
+    args = parser.parse_args()
+
+    # Set up AD7091R device
+    ad7091r_dev = ad7091rx(uri=args.uri, device_name=args.device_name)
+
+    # Get ADC channel 0 raw value and print it
+    raw = ad7091r_dev.channel[0].raw
+    print(f"Raw value read from channel0 is {raw}")
+
+    # Capture a buffer of 100 samples from channel 0 and display them
+    chn = 0
+    ad7091r_dev._rx_data_type = np.int32
+    ad7091r_dev.rx_output_type = "raw"
+    ad7091r_dev.rx_enabled_channels = [chn]
+    ad7091r_dev.rx_buffer_size = 100
+
+    data = ad7091r_dev.rx()
+
+    print(data)
+
+
+if __name__ == "__main__":
+    main()

supported_parts.md

@@ -76,6 +76,7 @@
 - AD5754R
 - AD5940
 - AD6676
+- AD7091RX (AD7091R-2, AD7091R-4, AD7091R-8)
 - AD7124
 - AD7134
 - AD7172-2

test/emu/devices/ad7091rx.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="192.168.1.3 Linux raspberrypi 6.8.0-rc4-v8+ #4 SMP PREEMPT Thu Feb 15 10:45:25 -03 2024 aarch64" ><context-attribute name="local,kernel" value="6.8.0-rc4-v8+" /><context-attribute name="uri" value="ip:192.168.1.3" /><context-attribute name="ip,ip-addr" value="192.168.1.3" /><device id="iio:device0" name="ad7091r-8" ><channel id="voltage1" type="input" ><attribute name="raw" filename="in_voltage1_raw" value="2603" /><attribute name="scale" filename="in_voltage_scale" value="0.610351562" /></channel><channel id="voltage5" type="input" ><attribute name="raw" filename="in_voltage5_raw" value="0" /><attribute name="scale" filename="in_voltage_scale" value="0.610351562" /></channel><channel id="voltage2" type="input" ><attribute name="raw" filename="in_voltage2_raw" value="533" /><attribute name="scale" filename="in_voltage_scale" value="0.610351562" /></channel><channel id="voltage6" type="input" ><attribute name="raw" filename="in_voltage6_raw" value="1076" /><attribute name="scale" filename="in_voltage_scale" value="0.610351562" /></channel><channel id="voltage3" type="input" ><attribute name="raw" filename="in_voltage3_raw" value="1922" /><attribute name="scale" filename="in_voltage_scale" value="0.610351562" /></channel><channel id="voltage7" type="input" ><attribute name="raw" filename="in_voltage7_raw" value="1747" /><attribute name="scale" filename="in_voltage_scale" value="0.610351562" /></channel><channel id="voltage0" type="input" ><attribute name="raw" filename="in_voltage0_raw" value="2229" /><attribute name="scale" filename="in_voltage_scale" value="0.610351562" /></channel><channel id="voltage4" type="input" ><attribute name="raw" filename="in_voltage4_raw" value="2376" /><attribute name="scale" filename="in_voltage_scale" value="0.610351562" /></channel><attribute name="waiting_for_supplier" value="0" /></device></context>

test/emu/hardware_map.yml

@@ -536,6 +536,15 @@ ad6676:
       - data_devices:
           - iio:device1
 
+ad7091r8:
+  - ad7091r8
+  - pyadi_iio_class_support:
+      - ad7091rx
+  - emulate:
+      - filename: ad7091rx.xml
+      - data_devices:
+          - iio:device0
+
 ad7768:
   - ad7768
   - pyadi_iio_class_support:

test/test_ad7091rx.py

@@ -0,0 +1,26 @@
+import pytest
+
+hardware = "ad7091r8"
+classname = "adi.ad7091rx"
+
+#########################################
+@pytest.mark.iio_hardware(hardware)
+@pytest.mark.parametrize("classname", [(classname)])
+@pytest.mark.parametrize("attr", ["raw"])
+@pytest.mark.parametrize(
+    "channel",
+    [
+        "voltage0",
+        "voltage1",
+        "voltage2",
+        "voltage3",
+        "voltage4",
+        "voltage5",
+        "voltage6",
+        "voltage7",
+    ],
+)
+def test_ad7091rx_channel_attr_raw(
+    test_attribute_single_value_channel_readonly, iio_uri, classname, channel, attr
+):
+    test_attribute_single_value_channel_readonly(iio_uri, classname, channel, attr)