Multiple lights on one zigbee node

[Dimitri G]

Hi

I'm currently struggling a bit with the zboss API.  I am trying to define 2 lights on my nRF52840 DK board.  Via Amazon Alexa, it should be possible to control these two lights individually.

I started from the light_bulb_eddystone example in Zigbee SDK 3.0.0. From what I understand, I need to make 2 endpoints on my zigbee node, one for each light.

But Alexa always sees one device.  How can I individually switch on/off the lights ?  In the zcl_device_cb function, decisions are made based on attribute types and cluster id.  But my device has 2 endpoints, both with the same cluster-id (ZB_ZCL_CLUSTER_ID_ON_OFF) and attribute-db-id (ZB_ZCL_SET_ATTR_VALUE_CB_ID).

 switch (p_device_cb_param->device_cb_id)
    {
        case ZB_ZCL_LEVEL_CONTROL_SET_VALUE_CB_ID:
            ...

        case ZB_ZCL_SET_ATTR_VALUE_CB_ID:
            cluster_id = p_device_cb_param->cb_param.set_attr_value_param.cluster_id;
            attr_id    = p_device_cb_param->cb_param.set_attr_value_param.attr_id;

            if (cluster_id == ZB_ZCL_CLUSTER_ID_ON_OFF)
            {
                uint8_t value = p_device_cb_param->cb_param.set_attr_value_param.values.data8;

                LOG_TRM("on/off attribute setting to %hd", PU16(value));
                if (attr_id == ZB_ZCL_ATTR_ON_OFF_ON_OFF_ID)
                {
                    on_off_set_value((zb_bool_t) value);
                }
            }

I suppose Alexa won't recognize two devices, but I have to make a custom skill to be able to send commands such as 'switch on light1' and 'switch on light2' ?

But how can I decide in my zcl_device_cb function which endpoint is actually addressed by Alexa ?

Anyone who can shed a light on this please ?  I can't find any example in the SDK which shows how to work with multiple endpoints.

Kind regards

[AndreasF]

Hi.

I suppose Alexa won't recognize two devices, but I have to make a custom skill to be able to send commands such as 'switch on light1' and 'switch on light2' ?

 I'm not sure if this is possible to achieve at the moment with Alexa, 2 endpoints with the same cluster and attribute-db-id.

I would recommend that you take a look at the example found in the folder:

\examples\multiprotocol\experimental\ble_zigbee_dynamic_color_light_bulb_thingy

This demonstrates how you can use different endpoints with different cluster and attribute-db-id.

Best regards,

Andreas

[Dimitri G]

Thanks, I will have a look at this example.

Indeed, after some further investigation, I also doubt if it is possible that Alexa recognizes 2 endpoints as different devices.  I asked for information on the amazon forums about this.