ESP32C6: E (575) esp_matter_cluster: At least one of the feature(s) must be supported from (Heat,Cool)

[tomgermany]

IDE: WSL2 ESP-IDF Extension Version 5.5, ESP-Matter Version release/V1.5
Target: ESP32C6 with Matter Thermostat
Code:
extern "C" void app_main()
{
nvs_flash_init();
node::config_t node_config;
node_t *node = node::create(&node_config, app_attribute_update_cb, NULL);

// 1. Erstelle einen leeren/einfachen Endpoint (statt des fertigen Thermostats)
endpoint_t *thermostat_endpoint = endpoint::create(node, ENDPOINT_FLAG_NONE, NULL);

if (thermostat_endpoint) {
    thermostat_endpoint_id = endpoint::get_id(thermostat_endpoint);

    // 2. Füge den Thermostat-Cluster manuell hinzu
    cluster::thermostat::config_t thermostat_config;
    thermostat_config.local_temperature = 2250;
    thermostat_config.system_mode = 4;
    
    // Hier fügen wir den Cluster dem Endpoint hinzu
    cluster_t *thermostat_cluster = cluster::thermostat::create(thermostat_endpoint, &thermostat_config, CLUSTER_FLAG_SERVER);

    if (thermostat_cluster) {
        // 3. JETZT fügen wir das Heating-Feature hinzu
        // Das setzt intern die Feature-Map auf 1 und fügt die Attribute hinzu
        cluster::thermostat::feature::heating::config_t heating_config;
        heating_config.occupied_heating_setpoint = 2100;
        cluster::thermostat::feature::heating::add(thermostat_cluster, &heating_config);
    }

    ESP_LOGI(TAG, "Manueller Thermostat mit ID %d initialisiert.", thermostat_endpoint_id);
}

esp_matter::start(NULL);
xTaskCreate(temperature_update_task, "temp_task", 4096, NULL, 5, NULL);

}

Build: No Errors
Flash: No Errors

But: Monitor ESP32 always: E (575) esp_matter_cluster: At least one of the feature(s) must be supported from (Heat,Cool)

Tryd everything, no chance .... solution? Could someone help

[pimpalemahesh]

@tomgermany The way you are creating the thermostat device is not quite correct.
The Thermostat device already includes a Thermostat cluster internally, so you don’t need to create and attach the cluster manually.

Instead, you should use the provided Thermostat endpoint create API and pass the config directly. This ensures that required features (like Heating or Cooling) are properly set, which avoids the error:

Please refer to the example below:

endpoint::thermostat::config_t thermostat_config;
thermostat_config.thermostat.local_temperature = 2250;
thermostat_config.thermostat.system_mode = 4;
thermostat_config.thermostat.feature_flags = cluster::thermostat::feature::heating::get_id();
thermostat_config.thermostat.features.heating.occupied_heating_setpoint = 2100;

endpoint_t *thermostat_endpoint = endpoint::thermostat::create(node, &thermostat_config, ENDPOINT_FLAG_NONE, NULL);

uint16_t thermostat_endpoint_id = endpoint::get_id(thermostat_endpoint);

if (thermostat_endpoint) {
    ESP_LOGI(TAG, "Thermostat mit ID %d initialisiert.", thermostat_endpoint_id);
}

esp_matter::start(NULL);

Don’t manually create the Thermostat cluster as it already taken care by create API.
Use endpoint::thermostat::create()
Set feature_flags properly (Heating or Cooling must be enabled)

This should resolve the error you’re seeing.