Add support for LTC2672

Add ltc2672.py driver
Add test script, example code
Update index.rst, init.py, supported_parts.md files
Add ltc2672 rst file
Add iio-emu xml file for ltc2672
Update hardware_map.yml emulation context map

Signed-off-by: SGudla <Saikiran.Gudla@analog.com>

adi/__init__.py

@@ -96,6 +96,7 @@
 from adi.ltc2387 import ltc2387
 from adi.ltc2499 import ltc2499
 from adi.ltc2664 import ltc2664
+from adi.ltc2672 import ltc2672
 from adi.ltc2688 import ltc2688
 from adi.ltc2983 import ltc2983
 from adi.max9611 import max9611

adi/ltc2672.py

@@ -0,0 +1,219 @@
+# Copyright (C) 2024 Analog Devices, Inc.
+#
+# SPDX short identifier: ADIBSD
+
+from decimal import Decimal
+
+from adi.attribute import attribute
+from adi.context_manager import context_manager
+
+
+class ltc2672(context_manager, attribute):
+    """LTC2672 DAC"""
+
+    _complex_data = False
+    _device_name = ""
+
+    def __init__(self, uri="", device_name=""):
+        """Constructor for LTC2672 class"""
+        context_manager.__init__(self, uri, self._device_name)
+
+        compatible_parts = ["ltc2672-16", "ltc2672-12"]
+
+        self._ctrl = None
+        self.channel = []
+
+        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}. Supported device names"
+                    f"are: {','.join(compatible_parts)}"
+                )
+
+        # Select the device matching device_name as working device
+        for device in self._ctx.devices:
+            if device.name == device_name:
+                self._ctrl = device
+                break
+
+        if not self._ctrl:
+            raise Exception("Error in selecting matching device")
+
+        self.output_bits = []
+        for ch in self._ctrl.channels:
+            name = ch.id
+            self.output_bits.append(ch.data_format.bits)
+            self.channel.append(self._channel(self._ctrl, name))
+
+    @property
+    def all_chns_span(self):
+        """Get all channels span in mA"""
+        return self._get_iio_dev_attr_str("all_chns_span")
+
+    @property
+    def all_chns_span_avail(self):
+        """Get list of span options in mA"""
+        return self._get_iio_dev_attr_str("all_chns_span_available")
+
+    @all_chns_span.setter
+    def all_chns_span(self, value):
+        """Set all channels span"""
+        if value in self.all_chns_span_avail:
+            self._set_iio_dev_attr_str("all_chns_span", value)
+        else:
+            raise ValueError(
+                "Error: span setting not supported \nUse one of: "
+                "str(self.all_chns_span_avail)"
+            )
+
+    @property
+    def all_chns_raw(self):
+        """Get raw value"""
+        return self._get_iio_dev_attr_str("all_chns_raw")
+
+    @all_chns_raw.setter
+    def all_chns_raw(self, value):
+        """Set raw value"""
+        self._set_iio_dev_attr_str("all_chns_raw", value)
+
+    @property
+    def all_chns_current(self):
+        """Get current value in mA"""
+        return self._get_iio_dev_attr_str("all_chns_current")
+
+    @all_chns_current.setter
+    def all_chns_current(self, value):
+        """Set current value in mA"""
+        self._set_iio_dev_attr_str("all_chns_current", value)
+
+    @property
+    def all_chns_powerdown(self):
+        """Get powerdown value"""
+        return self._get_iio_dev_attr_str("all_chns_powerdown")
+
+    @property
+    def all_chns_powerdown_avail(self):
+        """Get powerdown options"""
+        return self._get_iio_dev_attr_str("all_chns_powerdown_available")
+
+    @all_chns_powerdown.setter
+    def all_chns_powerdown(self, value):
+        """Set all channels powerdown"""
+        if value in self.all_chns_powerdown_avail:
+            self._set_iio_dev_attr_str("all_chns_powerdown", value)
+        else:
+            raise ValueError(
+                "Error: powerdown option not supported \nUse one of: "
+                "str(self.all_chns_powerdown_avail)"
+            )
+
+    @property
+    def mux(self):
+        """Get mux setting value"""
+        return self._get_iio_dev_attr_str("mux")
+
+    @property
+    def mux_avail(self):
+        """Get mux setting options"""
+        return self._get_iio_dev_attr_str("mux_available")
+
+    @mux.setter
+    def mux(self, value):
+        """Set mux option"""
+        if value in self.mux_avail:
+            self._set_iio_dev_attr_str("mux", value)
+        else:
+            raise ValueError(
+                "Error: mux setting not supported \nUse one of: " "str(self.mux_avail)"
+            )
+
+    @property
+    def fault_detect(self):
+        """Get fault condition if any"""
+        return self._get_iio_dev_attr_str("fault_detect")
+
+    @property
+    def fault_detect_avail(self):
+        """Get fault detect options"""
+        return self._get_iio_dev_attr_str("fault_detect_available")
+
+    class _channel(attribute):
+        """LTC2672 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", True)
+
+        @raw.setter
+        def raw(self, value):
+            """Set channel raw value"""
+            self._set_iio_attr(self.name, "raw", True, str(int(value)))
+
+        @property
+        def scale(self):
+            """Get channel scale"""
+            return self._get_iio_attr(self.name, "scale", True)
+
+        @property
+        def offset(self):
+            """get channel offset"""
+            return self._get_iio_attr(self.name, "offset", True)
+
+        @property
+        def current(self):
+            """Get channel current value in mA"""
+            return self._get_iio_attr(self.name, "current", True)
+
+        @current.setter
+        def current(self, value):
+            """Set channel current value in mA"""
+            self._set_iio_attr(self.name, "current", True, str(Decimal(value)))
+
+        @property
+        def span(self):
+            """Get channel span value"""
+            return self._get_iio_attr_str(self.name, "span", True)
+
+        @property
+        def span_avail(self):
+            """Get channel span options"""
+            return self._get_iio_attr_str(self.name, "span_available", True)
+
+        @span.setter
+        def span(self, value):
+            """Set channel span setting"""
+            if value in self.span_avail:
+                self._set_iio_attr(self.name, "span", True, value)
+            else:
+                raise ValueError(
+                    "Error: span setting not supported \nUse one of: "
+                    "str(self.span_avail)"
+                )
+
+        @property
+        def powerdown(self):
+            """Get channel powerdown"""
+            return self._get_iio_attr_str(self.name, "powerdown", True)
+
+        @property
+        def powerdown_avail(self):
+            """Get channel powerdown options"""
+            return self._get_iio_attr_str(self.name, "powerdown_available", True)
+
+        @powerdown.setter
+        def powerdown(self, value):
+            """Set channel powerdown setting"""
+            if value in self.powerdown_avail:
+                self._set_iio_attr(self.name, "powerdown", True, value)
+            else:
+                raise ValueError(
+                    "Error: powerdown setting not supported \nUse one of: "
+                    "str(self.powerdown_avail)"
+                )

doc/source/devices/adi.ltc2672.rst

@@ -0,0 +1,7 @@
+ltc2672
+==================
+
+.. automodule:: adi.ltc2672
+   :members:
+   :undoc-members:
+   :show-inheritance:

doc/source/devices/index.rst

@@ -107,6 +107,7 @@ Supported Devices
    adi.ltc2499
    adi.ltc2664
    adi.ltc2688
+   adi.ltc2672
    adi.ltc2983
    adi.max11205
    adi.max14001

examples/ltc2672_example.py

@@ -0,0 +1,58 @@
+# Copyright (C) 2024 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 adi.ltc2672 import ltc2672
+
+# Set up LTC2672
+ltc2672_dev = ltc2672(uri="serial:COM5,230400,8n1")
+
+# Set all channels span to 50mA
+ltc2672_dev.all_chns_span = "50mA"
+
+# Configure channel 0 and update dac output using the 'raw' attribute
+chn_num = 0
+ltc2672_chan = ltc2672_dev.channel[chn_num]
+ltc2672_chan.raw = 25000
+
+# Get the current value of channel 0 in mA for the corresponding raw value set
+current_val_ma = ltc2672_chan.current
+print(f"Channel{chn_num} current in mA: {current_val_ma}")
+
+# Set current value for channel 0 in mA
+ltc2672_chan.current = 45
+
+# Set mux value to "iout0" to monitor iout0 value on the mux_out pin
+ltc2672_dev.mux = "iout0"
+
+# Powerdown all the channels of the DAC
+ltc2672_dev.all_chns_powerdown = "powerdown"

supported_parts.md

@@ -163,6 +163,8 @@
 - LTC2499
 - LTC2664
 - LTC2688
+- LTC2672-12
+- LTC2672-16
 - LTC2983
 - AD7606
 - AD7745

test/emu/devices/ltc2672.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="serial" description="no-OS/projects/NO_OS_PROJECT 0.1" ><context-attribute name="uri" value="serial:/dev/ttyS0,230400,8n1n" /><context-attribute name="serial,port" value="/dev/ttyS0" /><context-attribute name="serial,description" value="ttyS0" /><device id="iio:device0" name="ltc2672-16" ><channel id="current0" name="Chn0" type="output" ><scan-element index="0" format="le:U16/16&gt;&gt;0" /><attribute name="raw" filename="out_current0_raw" value="0" /><attribute name="scale" filename="out_current0_scale" value="0.0000000000" /><attribute name="offset" filename="out_current0_offset" value="0" /><attribute name="current" filename="out_current0_current" value="0.0000mA" /><attribute name="span" filename="out_current0_span" value="off_mode" /><attribute name="span_available" filename="out_current0_span_available" value="off_mode 3.125mA 6.25mA 12.5mA 25mA 50mA 100mA 200mA MVREF 300mA" /><attribute name="powerdown" filename="out_current0_powerdown" value="powerdown" /><attribute name="powerdown_available" filename="out_current0_powerdown_available" value="powerdown" /></channel><channel id="current1" name="Chn1" type="output" ><scan-element index="1" format="le:U16/16&gt;&gt;0" /><attribute name="raw" filename="out_current1_raw" value="0" /><attribute name="scale" filename="out_current1_scale" value="0.0000000000" /><attribute name="offset" filename="out_current1_offset" value="0" /><attribute name="current" filename="out_current1_current" value="0.0000mA" /><attribute name="span" filename="out_current1_span" value="off_mode" /><attribute name="span_available" filename="out_current1_span_available" value="off_mode 3.125mA 6.25mA 12.5mA 25mA 50mA 100mA 200mA MVREF 300mA" /><attribute name="powerdown" filename="out_current1_powerdown" value="powerdown" /><attribute name="powerdown_available" filename="out_current1_powerdown_available" value="powerdown" /></channel><channel id="current2" name="Chn2" type="output" ><scan-element index="2" format="le:U16/16&gt;&gt;0" /><attribute name="raw" filename="out_current2_raw" value="0" /><attribute name="scale" filename="out_current2_scale" value="0.0000000000" /><attribute name="offset" filename="out_current2_offset" value="0" /><attribute name="current" filename="out_current2_current" value="0.0000mA" /><attribute name="span" filename="out_current2_span" value="off_mode" /><attribute name="span_available" filename="out_current2_span_available" value="off_mode 3.125mA 6.25mA 12.5mA 25mA 50mA 100mA 200mA MVREF 300mA" /><attribute name="powerdown" filename="out_current2_powerdown" value="powerdown" /><attribute name="powerdown_available" filename="out_current2_powerdown_available" value="powerdown" /></channel><channel id="current3" name="Chn3" type="output" ><scan-element index="3" format="le:U16/16&gt;&gt;0" /><attribute name="raw" filename="out_current3_raw" value="0" /><attribute name="scale" filename="out_current3_scale" value="0.0000000000" /><attribute name="offset" filename="out_current3_offset" value="0" /><attribute name="current" filename="out_current3_current" value="0.0000mA" /><attribute name="span" filename="out_current3_span" value="off_mode" /><attribute name="span_available" filename="out_current3_span_available" value="off_mode 3.125mA 6.25mA 12.5mA 25mA 50mA 100mA 200mA MVREF 300mA" /><attribute name="powerdown" filename="out_current3_powerdown" value="powerdown" /><attribute name="powerdown_available" filename="out_current3_powerdown_available" value="powerdown" /></channel><channel id="current4" name="Chn4" type="output" ><scan-element index="4" format="le:U16/16&gt;&gt;0" /><attribute name="raw" filename="out_current4_raw" value="0" /><attribute name="scale" filename="out_current4_scale" value="0.0000000000" /><attribute name="offset" filename="out_current4_offset" value="0" /><attribute name="current" filename="out_current4_current" value="0.0000mA" /><attribute name="span" filename="out_current4_span" value="off_mode" /><attribute name="span_available" filename="out_current4_span_available" value="off_mode 3.125mA 6.25mA 12.5mA 25mA 50mA 100mA 200mA MVREF 300mA" /><attribute name="powerdown" filename="out_current4_powerdown" value="powerdown" /><attribute name="powerdown_available" filename="out_current4_powerdown_available" value="powerdown" /></channel><attribute name="all_chns_raw" value="0" /><attribute name="all_chns_current" value="0.0000mA" /><attribute name="all_chns_span" value="off_mode" /><attribute name="all_chns_span_available" value="off_mode 3.125mA 6.25mA 12.5mA 25mA 50mA 100mA 200mA MVREF 300mA" /><attribute name="all_chns_powerdown" value="powerdown" /><attribute name="all_chns_powerdown_available" value="powerdown" /><attribute name="mux" value="disable" /><attribute name="mux_available" value="disable iout0 iout1 iout2 iout3 iout4 vcc vref vref_lo die_temperature vdd0 vdd1 vdd2 vdd3 vdd4 v_minus gnd vout0 vout1 vout2 vout3 vout4" /><attribute name="fault_detect" value="no_fault" /><attribute name="fault_detect_available" value="no_fault open_circuit_ch0 open_circuit_ch1 open_circuit_ch2 open_circuit_ch3 open_circuit_ch4 Over_temperature Invalid_SPI_seq_length multiple_faults" /><debug-attribute name="direct_reg_access" value="0" /></device></context>

test/emu/hardware_map.yml

@@ -412,6 +412,15 @@ ltc2664:
       - data_devices:
           - iio:device0
 
+ltc2672:
+  - ltc2672
+  - pyadi_iio_class_support:
+      - ltc2672
+  - emulate:
+      - filename: ltc2672.xml
+      - data_devices:
+          - iio:device0
+
 ltc2688:
   - ltc2688
   - pyadi_iio_class_support: