RE: nrf51822 bonding with "CSR demo PC software" failed

Yong.Xie — Thu, 09 Apr 2020 01:39:11 GMT

Hi Einar：

I patched the problem. The reason of bonding failed is that the CRS tool dose not support passkey entry.

The patch is handle the BLE_GAP_EVT_SEC_PARAMS_REQUEST event. Source code is below.

if(ble_cfg & BLE_CFG_MTD_PSK)
{
    if(p_ble_evt->evt.gap_evt.params.sec_params_request.peer_params.io_caps == BLE_GAP_IO_CAPS_KEYBOARD_ONLY ||\
       p_ble_evt->evt.gap_evt.params.sec_params_request.peer_params.io_caps == BLE_GAP_IO_CAPS_KEYBOARD_DISPLAY)
    {
        err_code = sd_ble_gap_sec_params_reply(p_ble_evt->evt.gap_evt.conn_handle,
                                       BLE_GAP_SEC_STATUS_SUCCESS,
                                       &m_application_table[0].sec_param, 
                                       &keys_exchanged);
    }
    else
    {
        err_code = sd_ble_gap_sec_params_reply(p_ble_evt->evt.gap_evt.conn_handle,
                                       BLE_GAP_SEC_STATUS_INVALID_PARAMS,
                                       &m_application_table[0].sec_param, 
                                       &keys_exchanged);
    }
    
}
else
{
    err_code = sd_ble_gap_sec_params_reply(p_ble_evt->evt.gap_evt.conn_handle,
                                       BLE_GAP_SEC_STATUS_SUCCESS,
                                       &m_application_table[0].sec_param, 
                                       &keys_exchanged);
}

RE: nrf51822 bonding with "CSR demo PC software" failed

Einar Thorsrud — Fri, 28 Feb 2020 13:31:05 GMT

Hi,

[quote user=""]The slave 51822 EVK board is set with "BLE_GAP_IO_CAPS_DISPLAY_ONLY" and "MITM = 1".[/quote]

This look sensible, but I cannot say for sure without knowing more about your code. Are you using an SDK example? Which example from which SDK version? Which other modifications have you done?

[quote user=""]Is there any thing wrong? Or if the "CSR demo PC software" is not support passkey , what will be happen?[/quote]

I have no knowledge of this tool. Can you test with nRF Connect for Dekstop (if you have another nRF5 device), or alternatively nRF Connect for iOS or Android instead?