Eve dimmer switch dimming thresholds

[don-reba]

Eve's support says that the app is required to adjust the dimming thresholds for their new Matter dimmer. This is not ideal, because the Android app requires a Google Home hub. It would be great if this could configured in Home Assistant.

• Eve app > Settings > Accessories > Eve device > Dimming Thresholds > Minimum
• Eve app > Settings > Accessories > Eve device > Dimming Thresholds > Maximum

Diagnostics: matter-532abdd572054c64bf18800fc1e88b06-Eve Dimmer Switch 20ECQ4101-92e7c7e1b91d9293381d2d816bdfed21.json

[lboue]

Attributes of LevelControl Cluster on Endpoint 1

It's probably related to these attributes:

• MinLevel / AttributeId: 2 (0x002) - Value type: Optional[uint] = 1
• MaxLevel / AttributeId: 3 (0x003) - Value type: Optional[uint] = 254

They should be added to this file:
https://github.com/home-assistant/core/blob/dev/homeassistant/components/matter/number.py

[don-reba]

I can't use the app to experiment, but Eve's support recommended using those settings to fix the dimmed light still being at about 60% brightness at CurrentLevel = 1. MinLevel and MaxLevel just constrain the range of values that CurrentLevel can take.

[lboue]

It seems that min and max are read only attributes
This may require modifying an Eve manufacturer attribute.

[Apollon77]

Exactly, these are read only. So would be maybe interesting if one of the eve custom clusters is used by their app to write the values and then they are set internally? So would be interesting to try with the app and look for changes

[don-reba]

The custom cluster for the dimmer looks like this:

EveCluster Cluster Attributes (Endpoint 1)

ClusterId: 319486977 (0x00130afc01)

Attribute	ID	Value Type	Value
Custom/Unknown Attribute	319422464 (0x00130a0000)	unknown	[Show value]
Custom/Unknown Attribute	319422466 (0x00130a0002)	unknown	[Show value]
Custom/Unknown Attribute	319422467 (0x00130a0003)	unknown	[Show value]
Custom/Unknown Attribute	319422471 (0x00130a0007)	unknown	2861113
Custom/Unknown Attribute	319422476 (0x00130a000c)	unknown	0
WattAccumulatedControlPoint	319422478 (0x00130a000e)	float32	0
Custom/Unknown Attribute	319422481 (0x00130a0011)	unknown	false
Custom/Unknown Attribute	319422482 (0x00130a0012)	unknown	3072
Custom/Unknown Attribute	319422490 (0x00130a001a)	unknown	0
Custom/Unknown Attribute	65532 (0x00fffc)	unknown	0
Custom/Unknown Attribute	65533 (0x00fffd)	unknown	1
Custom/Unknown Attribute	65528 (0x00fff8)	unknown	[]
Custom/Unknown Attribute	65529 (0x00fff9)	unknown	[]
Custom/Unknown Attribute	65531 (0x00fffb)	unknown	[Show value]

[don-reba]

If anyone has experience with Eve, would they help, if I asked them for documentation on these attributes?

[lboue]

If anyone has experience with Eve, would they help, if I asked them for documentation on these attributes?

Might as well give it a try.

[zifnab06]

I spent a fair amount of time with their android app.

The app has the following attributes defined for EveCluster:

ByteArray getConfig 319422464 
ByteArray setConfig 319422465
ByteArray loggingMetadata 319422466
ByteArray loggingData 319422467
ByteArray loggingControlPoint 319422468
ByteArray loggingTimestamp 319422469
UInt openCount 319422470
UInt lastEventTime 319422471
Double voltage 319422472
Double current 319422473
Double watt 319422474
Double wattAccumulated 319422475
UByte statusFault 319422476
UByte motionSensitivity 319422477
Uint accumulatedControlPoint 319422478
Boolean holdPosition 319422479
Boolean obstructionDetected 319422480
Boolean childLock 319422481
UShort rloc16 319422482
Double altitude 319422483
Double airPressure 319422484
UByte weatherTrend 319422485
Uint generatedCommandList 319487992
UInt acceptedCommandList 319487993
Uint attributeList 319487995
Uint featureMap 319487996
ULong deviceStatus 319422490
UShort clusterRevision 319487997

I'm still trying to figure out exactly what they're doing to change the dimmer values (and turn the status led on/off), but it looks like a custom byte array sent to setConfig.

None of the attribute values change after changing settings inside the eve app.

Small edit: if anyone has an android device with developer tools enabled, running an adb logcat --pid=$(adb shell pidof -s com.evehome.eve) while changing these values should dump logs with the exact payload. I do not have any of the google home things that support matter unfortunately.