Add support for DT5 (0-10V conversion) devices

Tested with Lunatone 86458508-AN. This one only appears to support
switching between linear and logarithmic dimming curves, and some
(undocumented) manufacturer's extensions. Support for pullup handling as
well as switching between the 0-10V and 1-10V ranges is not there.

README.rst

@@ -21,6 +21,7 @@ This library has been written with reference to the following documents:
 - IEC 62386-201:2009 (fluorescent lamps)
 - IEC 62386-202:2009 (self-contained emergency lighting)
 - IEC 62386-205:2009 (supply voltage controller for incandescent lamps)
+- IEC 62386-206:2009 (conversion from digital signal into DC voltage)
 - IEC 62386-207:2009 (LED modules)
 - IEC 62386-301:2017 (particular requirements for push button input devices)
 - IEC 62386-303:2017 (particular requirements for occupancy sensor input devices)

dali/gear/__init__.py

@@ -7,5 +7,6 @@
 import dali.gear.general
 import dali.gear.emergency
 import dali.gear.incandescent
+import dali.gear.converter
 import dali.gear.colour
 import dali.gear.led  # noqa: F401

dali/gear/converter.py

@@ -0,0 +1,173 @@
+"""Commands and responses from IEC 62386 part 206.
+
+This part covers conversion from digital signal into DC voltage.
+"""
+
+from dali import command
+from dali.gear.general import _StandardCommand, QueryExtendedVersionNumberMixin
+
+
+class _ConversionCommand(_StandardCommand):
+    devicetype = 5
+
+
+class _ConversionConfigCommand(_ConversionCommand):
+    """An incandescent lighting configuration command as defined in
+    section 11.3.4.1 of IEC 62386-206:2009.
+    """
+    sendtwice = True
+
+
+###############################################################################
+# Commands from IEC 62386-206 section 11.3.4.1
+###############################################################################
+
+class SetOutputRange1To10V(_ConversionConfigCommand):
+    """Set the output range to 1V - 10V
+
+    Converters without this feature shall not react.
+    """
+    _cmdval = 224
+
+
+class SetOutputRange0To10V(_ConversionConfigCommand):
+    """Set the output range to 0V - 10V
+
+    Converters without this feature shall not react.
+    """
+    _cmdval = 225
+
+
+class SwitchOnInternalPullUp(_ConversionConfigCommand):
+    """Switch on the internal pull-up resistor at the control voltage output
+
+    Converters without this feature shall not react.
+    """
+    _cmdval = 226
+
+
+class SwitchOffInternalPullUp(_ConversionConfigCommand):
+    """Switch off the internal pull-up resistor at the control voltage output
+
+    Converters without this feature shall not react.
+    """
+    _cmdval = 227
+
+
+class StoreDtrAsPhysicalMinimum(_ConversionConfigCommand):
+    """The physical minimum level shall be changed to the value given in the DTR"""
+    _cmdval = 228
+
+
+class SelectDimmingCurve(_ConversionConfigCommand):
+    """Select Dimming Curve
+
+    If DTR0 is 0 then selects the standard logarithmic curve
+
+    If DTR0 is 1 then selects a linear dimming curve
+
+    Other values of DTR0 are reserved and will not change the dimming
+    curve.  The setting is stored in non-volatile memory and is not
+    cleared by the Reset command.
+    """
+    _cmdval = 229
+
+
+class ResetConverterSettings(_ConversionConfigCommand):
+    """Reset parameters which are not affected by RESET
+
+    All converter settings not influenced by the RESET command shall be set to the
+    default values given in clause 10 of IEC 62386-206:2009.
+    """
+    _cmdval = 230
+
+
+###############################################################################
+# Commands from IEC 62386-205 section 11.3.4.2
+###############################################################################
+
+class QueryDimmingCurve(_ConversionCommand):
+    """Query Dimming Curve
+
+    0 = standard logarithmic
+    1 = linear
+    2-255 = reserved for future use
+    """
+    _cmdval = 238
+    response = command.Response
+
+
+class OutputLevelResponse(command.NumericResponse):
+    def __str__(self):
+        if isinstance(self.value, int):
+            if self.value == 254:
+                return "10.16V or more"
+            elif self.value == 255:
+                return "unknown"
+            else:
+                return f"{self.value * 0.04} V"
+        return self.value
+
+
+class QueryOutputLevel(_ConversionCommand):
+    """Query the output level
+
+    The answer shall be the analog output level in units of 0.04V, fiving a range of 0V to 10.16V.
+
+    Raw value 254 maps to 10.16V or higher.
+    Raw value of 255 means "the output level is not known".
+
+    Converters without this feature shall not react.
+    """
+    _cmdval = 239
+    response = OutputLevelResponse
+
+
+class QueryConverterFeaturesResponse(command.BitmapResponse):
+    bits = [
+        "0V - 10V output selectable",
+        "internal pull-up selectable",
+        "detection of output fault selectable",
+        "mains relay",
+        "output level can be queried",
+        "non-logarithmic dimming curve supported",
+        "physical selection / lamp fail detection by loss out output supported",
+        "physical selection switch supported",
+    ]
+
+
+class QueryConverterFeatures(_ConversionCommand):
+    """Query hardware features of the converter"""
+    _cmdval = 240
+    response = QueryConverterFeaturesResponse
+
+
+class QueryFailureStatusResponse(command.BitmapResponse):
+    bits = [
+        "output fault detected",
+    ]
+
+
+class QueryFailureStatus(_ConversionCommand):
+    """Query failure status register"""
+    _cmdval = 241
+    response = QueryFailureStatusResponse
+
+
+class QueryConverterStatusResponse(command.BitmapResponse):
+    bits = [
+        "0-10V operation",
+        "internal pull-up on",
+        "non-logarithmic dimming curve active",
+    ]
+
+
+class QueryConverterStatus(_ConversionCommand):
+    """Query the current status of the converter"""
+    _cmdval = 242
+    response = QueryConverterStatusResponse
+
+
+class QueryExtendedVersionNumber(QueryExtendedVersionNumberMixin,
+                                 _ConversionCommand):
+    pass

examples/async-dalitest.py

@@ -7,8 +7,7 @@
 import dali.gear.general as gg
 import dali.device.general as dg
 import dali.device.sequences as ds
-from dali.gear import emergency
-from dali.gear import led
+from dali.gear import emergency, led, converter
 from dali.sequences import QueryDeviceTypes, DALISequenceError
 from dali.driver.hid import tridonic, hasseb
 from dali.memory import *
@@ -48,6 +47,17 @@ async def scan_control_gear(d):
             print(f" -E- battery charge: {r}")
             r = await d.send(emergency.QueryRatedDuration(addr))
             print(f" -E- rated duration: {r} * 2")
+        if 5 in device_types:
+            r = await d.send(converter.QueryConverterFeatures(addr))
+            print(f" -0-10V- {r}")
+            r = await d.send(converter.QueryConverterStatus(addr))
+            print(f" -0-10V- {r}")
+            r = await d.send(converter.QueryFailureStatus(addr))
+            print(f" -0-10V- {r}")
+            r = await d.send(converter.QueryDimmingCurve(addr))
+            print(f" -0-10V- dimming curve: {r.raw_value.as_integer}")
+            r = await d.send(converter.QueryOutputLevel(addr))
+            print(f" -0-10V- output level: {r}")
         if 6 in device_types:
             r = await d.send(led.QueryGearType(addr))
             print(f" -LED- {r}")