how to use dm_device_delete

Question

Hi all!
I want to allow only 1 device to bond at a time. If another device bonding, I want to delete the previously bonded one.
I tried to use dm_device_delete_all() in DM_EVT_SECURITY_SETUP_COMPLETE event, but it delete the current device too.
I want to use dm_device_delete to delete the previous one, but I haven't p_handle for the previously bonded device.
Is there any api function to get all bonded device handle, or something similar? 
 Thanks!!!

Susheel Nuguru · Accepted Answer

You can create a new function something like this in the device_manager_xxx.c

dm_application_instance_t is only used for sanity checking, you can ignore that

ret_code_t dm_device_delete_all_except this(dm_application_instance_t const * p_app_handle,
                                                                   dm_handle_t const * p_dm_handle)
{
    VERIFY_MODULE_INITIALIZED();
    NULL_PARAM_CHECK(p_app_handle);
    NULL_PARAM_CHECK(p_dm_handle);
    VERIFY_APP_REGISTERED((*p_app_handle));
    VERIFY_DEVICE_INSTANCE(p_dm_handle->device_id);

    DM_MUTEX_LOCK();

    uint32_t err_code = NRF_SUCCESS;

    DM_TRC("[DM]: >> dm_device_delete_all_except_this\r\n");

    for (uint32_t index = 0; index < DEVICE_MANAGER_MAX_BONDS; index++)
    {
        if ((m_peer_table[index].id_bitmap != UNASSIGNED) && (p_dm_handle->device_id != index))
        {
            err_code = device_instance_free(index);
        }
    }

    DM_TRC("[DM]: << dm_device_delete_all_except_this\r\n");

    DM_MUTEX_UNLOCK();

    return err_code;
}

And then in the device_manager_evt_handler that is registered in your application, you can call this function when you get DM_EVT_SECURITY_SETUP_COMPLETE

how to use dm_device_delete

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