Re-bonding with Android HID

RE: Re-bonding with Android HID

Tim Hwang — Wed, 26 Jan 2022 00:38:16 GMT

It worked !!

Thanks a lot.

RE: Re-bonding with Android HID

Kenneth — Tue, 25 Jan 2022 15:13:08 GMT

Hi,

From the error code I can find:

#define PM_CONN_SEC_ERROR_PIN_OR_KEY_MISSING (PM_CONN_SEC_ERROR_BASE + 0x06) /**< @brief Encryption failed because the peripheral has lost the LTK for this bond. See also @ref BLE_HCI_STATUS_CODE_PIN_OR_KEY_MISSING and Table 3.7 ("Pairing Failed Reason Codes") in the Bluetooth Core Specification 4.2, section 3.H.3.5.5 (@linkBLEcore). */

I suspect you are calling pm_handler_disconnect_on_sec_failure() in pm_evt_handler(), this will automatically disconnect on failure. I suggest to comment out that pm_handler_disconnect_on_sec_failure().

Kenneth

RE: Re-bonding with Android HID

Tim Hwang — Tue, 25 Jan 2022 06:03:49 GMT

PM_EVT_CONN_SEC_CONFIG_REQ is 5.

Android try to connect but no pm 5 was found.

static void pm_evt_handler(pm_evt_t const * p_evt)
{
...
NRF_LOG_INFO("pm %x", p_evt->evt_id);

}

<info> app_timer: RTC: initialized.
<info> app: HID Keyboard example started.
<info> app: m_whitelist_peer_cnt 1, MAX_PEERS_WLIST 8
<info> app: Fast advertising.
<info> app: pm 1
<info> app: Connected
<info> app: pm 2
<info> peer_manager_handler: Connection security failed: role: Peripheral, conn_handle: 0x0, procedure: Encryption, error: 4102
<warning> peer_manager_handler: Disconnecting conn_handle 0.
<info> app: pm 4
<info> app: Fast advertising.
<info> app: Disconnected
<info> app: pm 1
<info> app: Connected
<info> app: pm 2
<info> peer_manager_handler: Connection security failed: role: Peripheral, conn_handle: 0x0, procedure: Encryption, error: 4102
...

RE: Re-bonding with Android HID

Tim Hwang — Tue, 25 Jan 2022 05:52:10 GMT

Thanks for your update.

I already test it but It was not effective at all.

RE: Re-bonding with Android HID

Eugene Yu — Tue, 25 Jan 2022 05:49:29 GMT

Hello Tim,

You need to configure the Peer manager to allow the repairing.

Please refer to the below ticket.

(+) bonding doesn't work after deleting bond info on NRF Connect - Nordic Q&A - Nordic DevZone - Nordic DevZone (nordicsemi.com)