The NRF52840 seems to not receive response from Green Power endpoints.

[c.tessierpiart]

Hi,

I am currently using a NRF52840 dongle with the python wrapper for the zigbee library.

When I send a Discover Attribute to a Green Power cluster in a Green Power Endpoint, it seems that the dongle does not receive any response from the device. I know the device send a response because I can see the frame with WireShark but the Wrapper seems to ignore it and sens a Request Timeout.

The command I use is the following : 

zcl cmd -w -d {ieee_addr} 242 21 -p A1E0 C -l 0000ff

Thanks for your help.

[Marjeris Romero]

Hi,

Do you have a sniffer trace you can share? Does the command packet you are sending look correct in the sniffer trace?

[c.tessierpiart]

Using Wireshark, the sniffer manage to capture the command frame : 

Then the selected device send to the dongle this response : 

The frame is here but it seems the dongle doesn't see it. To be a bit precise, I did not touch the GP feature of the dongle's firmware.

[Marjeris Romero]

Hi,

You may need to intercept this command response if you want to do more processing to the discover attribute response. From what I see on the ZCL specification there is not much to expect from the stack handling when the Discover attribute response is received:

Take a look at the documentation on "Executing interception mechanism" on the infocenter for more information on how to intercept ZCL packets.

Best regards,

Marjeris

[c.tessierpiart]

Hi,

The thing is that I can intercept any kind of data frame just fine but I can't intercept anything when I send any command with the Green Power Profile.

[Marjeris Romero]

Can you share with us the code you are using for intercepting these frames?

[c.tessierpiart]

/**@brief The Handler to 'intercept' every frame coming to the endpoint
 *
 * @param bufid    Reference to a ZBOSS buffer
 */
static zb_uint8_t cli_agent_ep_handler_generic_cmd(zb_bufid_t bufid)
{
    zb_zcl_parsed_hdr_t * p_cmd_info = ZB_BUF_GET_PARAM(bufid, zb_zcl_parsed_hdr_t);
    zb_int8_t             row;
    zb_ret_t              zb_err_code;

    /* Get the row in the requests table according by the sequence number */
    row = get_cmd_table_row_by_sn(p_cmd_info->seq_number);
    if (row == -1)
    {
        return ZB_FALSE;
    }

    cmd_query_t * p_row = &(m_cmd_data[row]);
    if (!is_response(p_cmd_info, p_row))
    {
        return ZB_FALSE;
    }
    if (p_cmd_info->cmd_id == ZB_ZCL_CMD_DEFAULT_RESP)
    {
        zb_zcl_default_resp_payload_t * p_def_resp;
        p_def_resp = ZB_ZCL_READ_DEFAULT_RESP(bufid);

        /* Print info received from default response */
        nrf_cli_fprintf(p_row->p_cli,
                       (p_def_resp->status == ZB_ZCL_STATUS_SUCCESS) ? NRF_CLI_INFO : NRF_CLI_ERROR,
                       "\r\nDefault Response received: ");
        nrf_cli_fprintf(p_row->p_cli,
                       (p_def_resp->status == ZB_ZCL_STATUS_SUCCESS) ? NRF_CLI_INFO : NRF_CLI_ERROR,
                       "Command: %d, Status: %d",
                        p_def_resp->command_id, p_def_resp->status);
        nrf_cli_fprintf(p_row->p_cli,
                       (p_def_resp->status == ZB_ZCL_STATUS_SUCCESS) ? NRF_CLI_INFO : NRF_CLI_ERROR,
                       "\r\n");

        if (p_def_resp->status != ZB_ZCL_STATUS_SUCCESS)
        {
            print_error(p_row->p_cli, "Command not successful", ZB_TRUE);
        }
        else
        {
            print_done(p_row->p_cli, ZB_FALSE);
        }
    }
    else if (p_cmd_info->cmd_id == ZB_ZCL_CMD_DISC_ATTRIB_RESP)
    {
        zb_zcl_disc_attr_info_t * p_attr_resp = NULL;
        zb_uint8_t complete = 0;
        nrf_cli_fprintf(p_row->p_cli,
                       NRF_CLI_INFO,
                       "\r\nList Attribute Response received: \r\n");
        ZB_ZCL_GENERAL_GET_COMPLETE_DISC_RES(bufid,complete);
        nrf_cli_fprintf(p_row->p_cli,
                        NRF_CLI_INFO,
                        "complete:%d\r\n",
                        complete);
        
        ZB_ZCL_GENERAL_GET_NEXT_DISC_ATTR_RES(bufid,p_attr_resp);
        nrf_cli_fprintf(p_row->p_cli,
                       NRF_CLI_INFO,
                       "list attr,type: \r\n[");
        while (p_attr_resp)
        {
            nrf_cli_fprintf(p_row->p_cli,
                        NRF_CLI_INFO,
                       "(%d,%d),",
                        p_attr_resp->attr_id, p_attr_resp->data_type);
          
            ZB_ZCL_GENERAL_GET_NEXT_DISC_ATTR_RES(bufid,p_attr_resp);
        }       
        nrf_cli_fprintf(p_row->p_cli,
                       NRF_CLI_INFO,
                       "]\r\n");
        print_done(p_row->p_cli, ZB_FALSE);
    }
    else if (p_cmd_info->cmd_id == (ZB_ZCL_CMD_DISCOVER_COMMANDS_RECEIVED_RES) || 
        (p_cmd_info->cmd_id ==ZB_ZCL_CMD_DISCOVER_COMMANDS_GENERATED_RES))
    {
        zb_zcl_disc_cmd_info_t * p_cmd_resp = NULL;
        zb_uint8_t complete = 0;
        zb_zcl_parse_status_t status;

        nrf_cli_fprintf(p_row->p_cli,
                       NRF_CLI_INFO,
                       "\r\nList Command Response received: \r\n");
        ZB_ZCL_GENERAL_GET_DISC_COMMAND_RESP(bufid,complete);
        nrf_cli_fprintf(p_row->p_cli,
                        NRF_CLI_INFO,
                        "complete:%d\r\n",
                        complete);
        
        ZB_ZCL_GENERAL_GET_NEXT_CMD_ID_DISC_COMMAND_RESP(bufid,p_cmd_resp);
        nrf_cli_fprintf(p_row->p_cli,
                       NRF_CLI_INFO,
                       "list cmd: \r\n[");
        while (p_cmd_resp)
        {
            nrf_cli_fprintf(p_row->p_cli,
                        NRF_CLI_INFO,
                       "%d,",
                        p_cmd_resp->cmd_id);
          
            ZB_ZCL_GENERAL_GET_NEXT_CMD_ID_DISC_COMMAND_RESP(bufid,p_cmd_resp);
        }       
        nrf_cli_fprintf(p_row->p_cli,
                       NRF_CLI_INFO,
                       "]\r\n");
        print_done(p_row->p_cli, ZB_FALSE);
    }
    else /* In case of unknown response */
    {
        print_error(p_row->p_cli, "Unknown response", ZB_TRUE);
    }
    /* Cancel the ongoing alarm which was to erase the row... */
    if (m_cmd_data[row].def_resp == ZB_ZCL_ENABLE_DEFAULT_RESPONSE)
    {
        zb_err_code = (ZB_SCHEDULE_APP_ALARM_CANCEL(invalidate_row_cb, row));
        ZB_ERROR_CHECK(zb_err_code);
    }
    /* ...and erase it manually */
    invalidate_row(row);

    zb_buf_free(bufid);
    return ZB_TRUE;
}


/**@brief Endpoint handlers
 */
 NRF_ZIGBEE_EP_HANDLER_REGISTER(generic_cmd, cli_agent_ep_handler_generic_cmd);
/** @} */

Every function works with profile Home Automation, but it doesn't when I try to work with endpoint 242 and Green Power Profile