How to write value to ElectricalEnergyMeasurement::Attributes::Accuracy::Id (CON-1326)

[svn-matterize]

Trying to write a array value to the attribute ElectricalEnergyMeasurement::Attributes::Accuracy::Id using esp_matter_array

ElectricalEnergyMeasurement::Structs::MeasurementAccuracyRangeStruct::Type energyAccuracyRanges[] = {
        { .rangeMin = 0,
          .rangeMax = 1'000'000'000'000'000, // 1 million Mwh
          .percentMax = chip::MakeOptional(static_cast<chip::Percent100ths>(500)),
          .percentMin = chip::MakeOptional(static_cast<chip::Percent100ths>(50)) }
    };

    ElectricalEnergyMeasurement::Structs::MeasurementAccuracyStruct::Type accuracy = {
        .measurementType = chip::app::Clusters::detail::MeasurementTypeEnum::kElectricalEnergy,
        .measured = true,
        .minMeasuredValue = 0,
        .maxMeasuredValue = 1'000'000'000'000'000, // 1 million Mwh
        .accuracyRanges = chip::app::DataModel::List<
            const ElectricalEnergyMeasurement::Structs::MeasurementAccuracyRangeStruct::Type>(
            energyAccuracyRanges)
    };
    arr_val = esp_matter_array((uint8_t *)&accuracy, sizeof(arr_val), 1);
    // err = attribute::set_val(attribute, &arr_val);
    err = attribute::update(Endpoint.kPlug, ElectricalEnergyMeasurement::Id,
                ElectricalEnergyMeasurement::Attributes::Accuracy::Id, &arr_val);
    if (err != ESP_OK) {
        ESP_LOGE(TAG, "Updated EnergyAccuracy failed");
    }

Device log during attribute update

I (2862) esp_matter_attribute: ********** W : Endpoint 0x0001's Cluster 0x00000091's Attribute 0x00000000 is <invalid type: 4> **********

Chip tool read back

[1725446179.843262][8020:8022] CHIP:DMG: ReportDataMessage =
[1725446179.843366][8020:8022] CHIP:DMG: {
[1725446179.843492][8020:8022] CHIP:DMG:    AttributeReportIBs =
[1725446179.843806][8020:8022] CHIP:DMG:    [
[1725446179.843979][8020:8022] CHIP:DMG:        AttributeReportIB =
[1725446179.844116][8020:8022] CHIP:DMG:        {
[1725446179.844245][8020:8022] CHIP:DMG:            AttributeStatusIB =
[1725446179.844411][8020:8022] CHIP:DMG:            {
[1725446179.844566][8020:8022] CHIP:DMG:                AttributePathIB =
[1725446179.845094][8020:8022] CHIP:DMG:                {
[1725446179.845569][8020:8022] CHIP:DMG:                    Endpoint = 0x1,
[1725446179.846278][8020:8022] CHIP:DMG:                    Cluster = 0x91,
[1725446179.846903][8020:8022] CHIP:DMG:                    Attribute = 0x0000_0000,
[1725446179.847421][8020:8022] CHIP:DMG:                }
[1725446179.847961][8020:8022] CHIP:DMG:                    
[1725446179.848284][8020:8022] CHIP:DMG:                StatusIB =
[1725446179.848313][8020:8022] CHIP:DMG:                {
[1725446179.848338][8020:8022] CHIP:DMG:                    status = 0x89 (RESOURCE_EXHAUSTED),
[1725446179.848442][8020:8022] CHIP:DMG:                },
[1725446179.848470][8020:8022] CHIP:DMG:                
[1725446179.848557][8020:8022] CHIP:DMG:            },
[1725446179.848583][8020:8022] CHIP:DMG:            
[1725446179.848651][8020:8022] CHIP:DMG:        },
[1725446179.849047][8020:8022] CHIP:DMG:        
[1725446179.849136][8020:8022] CHIP:DMG:    ],
[1725446179.849159][8020:8022] CHIP:DMG:    
[1725446179.849173][8020:8022] CHIP:DMG:    SuppressResponse = true, 
[1725446179.849190][8020:8022] CHIP:DMG:    InteractionModelRevision = 11
[1725446179.849264][8020:8022] CHIP:DMG: }
[1725446179.849314][8020:8022] CHIP:TOO: Response Failure: IM Error 0x00000589: General error: 0x89 (RESOURCE_EXHAUSTED)

while reading the attribute device log is

I (13352) esp_matter_attribute: ********** R : Endpoint 0x0001's Cluster 0x00000091's Attribute 0x00000000 is <invalid type: 4> **********
E (13362) esp_matter_attribute: Insufficient space for reading Endpoint 0x0001's Cluster 0x00000091's Attribute 0x00000000: required: 4, max: 2

[lboue]

Any news about this issue?

[jadhavrohit924]

@svn-matterize Sorry for the delayed response, you cannot use esp_matter_array for storage because esp-matter doesn’t support array attribute storage. There is API to set Accuracy in the connectedhomeip SDK SetMeasurementAccuracy. You have to use this.

[svn-matterize]

@jadhavrohit924 , attribute storage, are you mentioning (ATTRIBUTE_FLAG_NONVOLATILE) nvs storage? Is it possible to attribute::update/set attribute value using esp_matter_array, if the flag is (ATTRIBUTE_FLAG_NONE)? How to form the struct value to array using esp_matter_array any example.

[jadhavrohit924]

Independent of attribute quality, storage of arrays and structs are not possible using esp-matter because for such attributes there is delegate implementation in the connectedhomeip SDK. But delegate is missing for ElectricalEnergyMeasurement cluster so you have to reach to the SDK to update/set the attribute of this cluster.