Hello
I use nrf52832 and SDK v17.
And I'm using NUS (UART) service and peer manager. So far, I've been testing with an Android phone and connected it with an iPhone for several tests. I've successfully connected to the iPhone, and I've checked its operation. After that, however, the connection has failed on Android.
I used the peer manager for the Bluetooth disconnect function. Removing the peer manager code will pairing but the Bluetooth disconnect function will fail.
Is this problem caused by peer manager? I can't upload the entire code, so I'll just post the part about the peer manager.
Please let me know if you need anything else.
Thank you!
main.c
#define LESC_DEBUG_MODE 0 /**< Set to 1 to use LESC debug keys, allows you to use a sniffer to inspect traffic. */
#define SEC_PARAM_BOND 1 /**< Perform bonding. */
#define SEC_PARAM_MITM 1 /**< Man In The Middle protection required (applicable when display module is detected). */
#define SEC_PARAM_LESC 0 /**< LE Secure Connections enabled. */
#define SEC_PARAM_KEYPRESS 0 /**< Keypress notifications not enabled. */
#define SEC_PARAM_IO_CAPABILITIES BLE_GAP_IO_CAPS_DISPLAY_ONLY /**< Display I/O capabilities. */
#define SEC_PARAM_OOB 0 /**< Out Of Band data not available. */
#define SEC_PARAM_MIN_KEY_SIZE 7 /**< Minimum encryption key size. */
#define SEC_PARAM_MAX_KEY_SIZE 16 /**< Maximum encryption key size. */
#define PASSKEY_TXT "Passkey:" //< Message to be displayed together with the pass-key.
#define PASSKEY_TXT_LENGTH 8 //< Length of message to be displayed together with the pass-key.
#define PASSKEY_LENGTH 6 //< Length of pass-key received by the stack for display.
static pm_peer_id_t m_peer_to_be_deleted = PM_PEER_ID_INVALID;
static void ble_evt_handler(ble_evt_t const * p_ble_evt, void * p_context)
{
uint32_t err_code;
pm_handler_secure_on_connection(p_ble_evt);
switch (p_ble_evt->header.evt_id)
{
case BLE_GAP_EVT_DISCONNECTED: //when disconnected
{
bool erase_bonds = false;
NRF_LOG_INFO("Disconnected");
m_conn_handle = BLE_CONN_HANDLE_INVALID;
// Check if the last connected peer had not used MITM, if so, delete its bond information.
if (m_peer_to_be_deleted != PM_PEER_ID_INVALID)
{
err_code = pm_peer_delete(m_peer_to_be_deleted);
APP_ERROR_CHECK(err_code);
NRF_LOG_DEBUG("Collector's bond deleted");
m_peer_to_be_deleted = PM_PEER_ID_INVALID;
}
//advertising_start(erase_bonds); //auto pairing test
} break;
case BLE_GAP_EVT_CONNECTED: //when connected pairing
{
NRF_LOG_INFO("Connected");
m_peer_to_be_deleted = PM_PEER_ID_INVALID;
m_conn_handle = p_ble_evt->evt.gap_evt.conn_handle;
err_code = nrf_ble_qwr_conn_handle_assign(&m_qwr, m_conn_handle);
APP_ERROR_CHECK(err_code);
} break;
case BLE_GAP_EVT_PHY_UPDATE_REQUEST:
{
NRF_LOG_DEBUG("PHY update request.");
ble_gap_phys_t const phys =
{
.rx_phys = BLE_GAP_PHY_AUTO,
.tx_phys = BLE_GAP_PHY_AUTO,
};
err_code = sd_ble_gap_phy_update(p_ble_evt->evt.gap_evt.conn_handle, &phys);
APP_ERROR_CHECK(err_code);
} break;
case BLE_GATTC_EVT_TIMEOUT:
// Disconnect on GATT Client timeout event.
NRF_LOG_DEBUG("GATT Client Timeout.");
err_code = sd_ble_gap_disconnect(p_ble_evt->evt.gattc_evt.conn_handle,
BLE_HCI_REMOTE_USER_TERMINATED_CONNECTION);
APP_ERROR_CHECK(err_code);
break;
case BLE_GATTS_EVT_TIMEOUT:
// Disconnect on GATT Server timeout event.
NRF_LOG_DEBUG("GATT Server Timeout.");
err_code = sd_ble_gap_disconnect(p_ble_evt->evt.gatts_evt.conn_handle,
BLE_HCI_REMOTE_USER_TERMINATED_CONNECTION);
APP_ERROR_CHECK(err_code);
break;
case BLE_GAP_EVT_SEC_PARAMS_REQUEST: //Edit
NRF_LOG_DEBUG("BLE_GAP_EVT_SEC_PARAMS_REQUEST");
break;
case BLE_GAP_EVT_PASSKEY_DISPLAY: //add
{
char passkey[PASSKEY_LENGTH + 1];
memcpy(passkey, p_ble_evt->evt.gap_evt.params.passkey_display.passkey, PASSKEY_LENGTH);
passkey[PASSKEY_LENGTH] = 0;
NRF_LOG_INFO("Passkey: %s", nrf_log_push(passkey));
} break;
case BLE_GAP_EVT_LESC_DHKEY_REQUEST: //add
NRF_LOG_INFO("BLE_GAP_EVT_LESC_DHKEY_REQUEST");
break;
case BLE_GAP_EVT_AUTH_STATUS: //add
NRF_LOG_INFO("BLE_GAP_EVT_AUTH_STATUS: status=0x%x bond=0x%x lv4: %d kdist_own:0x%x kdist_peer:0x%x",
p_ble_evt->evt.gap_evt.params.auth_status.auth_status,
p_ble_evt->evt.gap_evt.params.auth_status.bonded,
p_ble_evt->evt.gap_evt.params.auth_status.sm1_levels.lv4,
*((uint8_t *)&p_ble_evt->evt.gap_evt.params.auth_status.kdist_own),
*((uint8_t *)&p_ble_evt->evt.gap_evt.params.auth_status.kdist_peer));
break;
default:
// No implementation needed.
break;
}
}
/**@brief Function for handling Peer Manager events.
*
* @param[in] p_evt Peer Manager event.
*/
static void pm_evt_handler(pm_evt_t const * p_evt) //add
{
ret_code_t err_code;
pm_handler_on_pm_evt(p_evt);
pm_handler_disconnect_on_sec_failure(p_evt);
pm_handler_flash_clean(p_evt);
switch (p_evt->evt_id)
{
case PM_EVT_CONN_SEC_SUCCEEDED:
{
pm_conn_sec_status_t conn_sec_status;
// Check if the link is authenticated (meaning at least MITM).
err_code = pm_conn_sec_status_get(p_evt->conn_handle, &conn_sec_status);
APP_ERROR_CHECK(err_code);
if (conn_sec_status.mitm_protected)
{
NRF_LOG_INFO("Link secured. Role: %d. conn_handle: %d, Procedure: %d",
ble_conn_state_role(p_evt->conn_handle),
p_evt->conn_handle,
p_evt->params.conn_sec_succeeded.procedure);
}
else
{
// The peer did not use MITM, disconnect.
NRF_LOG_INFO("Collector did not use MITM, disconnecting");
err_code = pm_peer_id_get(m_conn_handle, &m_peer_to_be_deleted);
APP_ERROR_CHECK(err_code);
err_code = sd_ble_gap_disconnect(m_conn_handle,
BLE_HCI_REMOTE_USER_TERMINATED_CONNECTION);
APP_ERROR_CHECK(err_code);
}
} break;
case PM_EVT_CONN_SEC_FAILED:
m_conn_handle = BLE_CONN_HANDLE_INVALID;
break;
case PM_EVT_PEERS_DELETE_SUCCEEDED:
advertising_start(false);
break;
default:
break;
}
}
/**@brief Function for the Peer Manager initialization.
*/
static void peer_manager_init(void)
{
ble_gap_sec_params_t sec_param;
ret_code_t err_code;
err_code = pm_init();
APP_ERROR_CHECK(err_code);
memset(&sec_param, 0, sizeof(ble_gap_sec_params_t));
// Security parameters to be used for all security procedures.
sec_param.bond = SEC_PARAM_BOND;
sec_param.mitm = SEC_PARAM_MITM;
sec_param.lesc = SEC_PARAM_LESC;
sec_param.keypress = SEC_PARAM_KEYPRESS;
sec_param.io_caps = SEC_PARAM_IO_CAPABILITIES;
sec_param.oob = SEC_PARAM_OOB;
sec_param.min_key_size = SEC_PARAM_MIN_KEY_SIZE;
sec_param.max_key_size = SEC_PARAM_MAX_KEY_SIZE;
sec_param.kdist_own.enc = 1;
sec_param.kdist_own.id = 1;
sec_param.kdist_peer.enc = 1;
sec_param.kdist_peer.id = 1;
err_code = pm_sec_params_set(&sec_param);
APP_ERROR_CHECK(err_code);
err_code = pm_register(pm_evt_handler);
APP_ERROR_CHECK(err_code);
}
/**@brief Clear bond information from persistent storage.
*/
static void delete_bonds(void)
{
ret_code_t err_code;
NRF_LOG_INFO("Erase bonds!");
err_code = pm_peers_delete();
APP_ERROR_CHECK(err_code);
}
nrf connect App
nRF Connect, 2020-11-03 Smart_Helmet (E4:92:95:67:09:7A) V 10:45:05.102 Connecting to E4:92:95:67:09:7A... D 10:45:05.102 gatt = device.connectGatt(autoConnect = false, TRANSPORT_LE, preferred PHY = LE 1M) D 10:45:05.186 [Broadcast] Action received: android.bluetooth.device.action.ACL_CONNECTED D 10:45:05.197 [Callback] Connection state changed with status: 0 and new state: CONNECTED (2) I 10:45:05.197 Connected to E4:92:95:67:09:7A V 10:45:05.209 Discovering services... D 10:45:05.209 gatt.discoverServices() D 10:45:05.274 [Broadcast] Action received: android.bluetooth.device.action.BOND_STATE_CHANGED, bond state changed to: BOND_BONDING (11) D 10:45:05.311 [Broadcast] Action received: android.bluetooth.device.action.PAIRING_REQUEST, pairing variant: PAIRING_VARIANT_CONSENT (3) I 10:45:05.927 Connection parameters updated (interval: 7.5ms, latency: 0, timeout: 5000ms) D 10:45:05.988 [Callback] Services discovered with status: 0 I 10:45:05.988 Services discovered V 10:45:05.994 Generic Access (0x1800) - Device Name [R W] (0x2A00) - Appearance [R] (0x2A01) - Peripheral Preferred Connection Parameters [R] (0x2A04) - Central Address Resolution [R] (0x2AA6) Generic Attribute (0x1801) Nordic UART Service (6e400001-b5a3-f393-e0a9-e50e24dcca9e) - RX Characteristic [W WNR] (6e400002-b5a3-f393-e0a9-e50e24dcca9e) - TX Characteristic [N] (6e400003-b5a3-f393-e0a9-e50e24dcca9e) Client Characteristic Configuration (0x2902) D 10:45:05.994 gatt.setCharacteristicNotification(6e400003-b5a3-f393-e0a9-e50e24dcca9e, true) I 10:45:06.086 Connection parameters updated (interval: 43.75ms, latency: 0, timeout: 5000ms) I 10:45:06.353 Notification received from 6e400003-b5a3-f393-e0a9-e50e24dcca9e, value: (0x) 6F-76-65-72-20-37-35-00 ction.ACL_DISCONNECTED
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After I delete the bond from the iPhone, it doesn't connect to the iPhone. Is there a way to reset the bond?
Thank you.
