RE: zigbee

Marte Myrvold — Wed, 21 Sep 2022 12:43:54 GMT

Hi,

[quote user=""]Is it possible to know the Profile, End-Point, Clusters, etc. properties supported by this device?[/quote]

Yes, you can send a Simple Descriptor Request to the device, using zb_zdo_simple_desc_req():

static void send_simple_desc_req(zb_bufid_t buf)
{
    if (!buf)
    {
        zb_buf_get_out_delayed(send_simple_desc_req);
    }
    else
    {
        zb_zdo_simple_desc_req_t *req;
        req = zb_buf_initial_alloc(buf, sizeof(zb_zdo_simple_desc_req_t));
        req->nwk_addr = 0; /* send to coordinator */
        req->endpoint = 5;
        zb_zdo_simple_desc_req(buf, simple_desc_callback);
    }
}

When the coordinator receives a response it will call the callback function given in zb_zdo_simple_desc_req, which in this case is simple_desc_callback():

static void simple_desc_callback(zb_bufid_t buf)
{
    zb_uint8_t *zdp_cmd = zb_buf_begin(buf);
    zb_zdo_simple_desc_resp_t *resp = (zb_zdo_simple_desc_resp_t*)(zdp_cmd);
    zb_uint_t i;

    if (resp->hdr.status == ZB_ZDP_STATUS_SUCCESS) {
        // Handle the response how you want
        //resp->hdr.status
        //resp->hdr.nwk_addr
        //resp->hdr.status 
        //resp->hdr.nwk_addr
        //resp->simple_desc.endpoint, 
        //resp->simple_desc.app_profile_id,
        //resp->simple_desc.app_device_id, 
        //resp->simple_desc.app_device_version,
        //resp->simple_desc.app_input_cluster_count
        //resp->simple_desc.app_output_cluster_count
        //resp->simple_desc.app_input_cluster_count
        //resp->simple_desc.app_output_cluster_count
    }
}

If you have enabled Zigbee shell on your coordinator you can also use shell commands to send Simple Descriptor Req, using zdo simple_desc_req.

[quote user=""]Is it possible to know the real-time dynamic link status, link quality of the connected device?[/quote]

Yes, you have some different options for this.

One is to look at the neighbor table, as this will contain estimated LQI of neighbors. You can read the neighbor table on a local device with zb_nwk_nbr_iterator_next(), or you can send a command to get the neighbor table of another device by sending a Mgmt_Lqi_Req command using zb_zdo_mgmt_lqi_req().

Another option is to use zb_zdo_get_diag_data() to get the last known LQI and RSSI values from a specific device.

The last option is to use the Diagnostics cluster, which you can find the API for here: Data Structures ZCL Diagnostics cluster.

Best regards,

Marte