ESP32 Forum

Posted: **Fri Jun 13, 2025 3:14 pm**

I am trying to understand how to configure the Operational State cluster on a Dishwasher Endpoint.

I can see that an operations state cluster is created when the dish_washer::add method is called

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operational_state::create(endpoint, &(config->operational_state), CLUSTER_FLAG_SERVER);

I have tried to fetch the cluster and attribute

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cluster_t *operational_state_cluster = cluster::get(endpoint, OperationalState::Id);
esp_matter::attribute_t *phase_list_attr = esp_matter::attribute::get(operational_state_cluster, chip::app::Clusters::OperationalState::Attributes::PhaseList::Id);

but I'm uncertain how to create and set the phase list.

I tried this:

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uint8_t phase_list[] = { 0x00, 0x01, 0x02 };

esp_matter::attribute::set_val(phase_list_attr, &phase_val);

but that results in this error:

esp_matter_core: set_val(1098): Attribute is not managed by esp matter data model

The phase list attribute is also supposed to be strings, but I don't know how to use the uint8_t type with string values.

There don't appear to be any examples of this. Can anyone help?

Posted: **Mon Jun 16, 2025 4:14 pm**

I made some progress with this.

I created an implementation of the Delegate, as described in the Matter SDK. This means that the Phase List and Operational Status attributes can be read successfully.

However, when I try to sent a Start command, I get an error: 0x81 Unsupported_Command.

Posted: **Tue Jun 17, 2025 10:55 am**

To resolve this, I needed to add the commands to the cluster. I think that's because the commands are optional.

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esp_matter::cluster_t *operational_state_cluster = esp_matter::cluster::get(endpoint, chip::app::Clusters::OperationalState::Id);
esp_matter::cluster::operational_state::command::create_start(operational_state_cluster);
esp_matter::cluster::operational_state::command::create_stop(operational_state_cluster);
esp_matter::cluster::operational_state::command::create_pause(operational_state_cluster);
esp_matter::cluster::operational_state::command::create_resume(operational_state_cluster);

Once I made that change, the various callbacks get invoked as expected.

ESP32 Forum

Define Matter PhaseList in Operational State cluster of Dish Washer Endpoint

Define Matter PhaseList in Operational State cluster of Dish Washer Endpoint

Re: Define Matter PhaseList in Operational State cluster of Dish Washer Endpoint

Re: Define Matter PhaseList in Operational State cluster of Dish Washer Endpoint