Get RSSI when link loss occurs

Change-Id: I71fbd0106e9443178293af6b849ecb2ce28ab65b
Signed-off-by: Deokhyun Kim <dukan.kim@samsung.com>

diff --git a/include/bluetooth_internal.h b/include/bluetooth_internal.h
index c349656..dd57933 100644 (file)
--- a/include/bluetooth_internal.h
+++ b/include/bluetooth_internal.h
@@ -1226,6 +1226,24 @@ int bt_device_set_trusted_profile_cb(bt_device_trusted_profiles_cb callback, voi
 int bt_device_unset_trusted_profile_cb(void);
 
 /**
+ * @internal
+ * @ingroup CAPI_NETWORK_BLUETOOTH_DEVICE_MODULE
+ * @brief Gets the rssi value when link loss occurs.
+ * @since_tizen 6.0
+ *
+ * @remarks This function should be called in bt_device_connection_state_changed_cb
+ * when the device is disconnected
+ *
+ * @param[out] progress                Link loss rssi
+ * @retval #BT_ERROR_NONE  Successful
+ * @retval #BT_ERROR_OPERATION_FAILED  Operation failed
+ *
+ * @see bt_device_set_connection_state_changed_cb()
+ * @see bt_device_connection_state_changed_cb()
+ */
+int bt_device_get_link_loss_rssi(int *rssi);
+
+/**
  * @deprecated Deprecated since 4.0. Use bt_gatt_client_request_att_mtu_change instead.
  * @ingroup CAPI_NETWORK_BLUETOOTH_DEVICE_MODULE
  * @brief Request to change ATT MTU value

diff --git a/include/bluetooth_private.h b/include/bluetooth_private.h
index 18976d8..0a75fea 100644 (file)
--- a/include/bluetooth_private.h
+++ b/include/bluetooth_private.h
@@ -711,6 +711,8 @@ int _bt_get_bt_device_info_s(bt_device_info_s **dest_dev, bluetooth_device_info_
 int _bt_get_ad_data_by_type(char *in_data, int in_len,
                char in_type, char **data, int *data_len);
 
+int _bt_get_link_loss_rssi(void);
+
 /**
  * @internal
  * @brief Free bt_device_info_s.

diff --git a/src/bluetooth-common.c b/src/bluetooth-common.c
index d535ecd..8671857 100644 (file)
--- a/src/bluetooth-common.c
+++ b/src/bluetooth-common.c
@@ -33,6 +33,7 @@
 
 static bool is_initialized = false;
 static bool is_le_initialized = false;
+static int dbfw_rssi;
 
 static bt_event_sig_event_slot_s bt_event_slot_container[BT_EVENT_MAX] = { {NULL, NULL}, };
 
@@ -608,6 +609,11 @@ int _bt_get_ad_data_by_type(char *in_data, int in_len,
 }
 /* LCOV_EXCL_STOP */
 
+int _bt_get_link_loss_rssi(void)
+{
+       return dbfw_rssi;
+}
+
 int _bt_convert_address_to_string(char **addr_str, bluetooth_device_address_t *addr_hex)
 {
        char address[18] = { 0, };
@@ -835,8 +841,10 @@ static int __bt_get_bt_device_connection_info_s(bt_device_connection_info_s **de
                (*dest)->disconn_reason = BT_DEVICE_DISCONNECT_REASON_UNKNOWN;
                break;
        }
-
        BT_INFO("Disconnected reason to app [0x%x]", (*dest)->disconn_reason);
+
+       dbfw_rssi = source->rssi;
+
        return BT_ERROR_NONE;
 }
 
@@ -1602,6 +1610,7 @@ static void __bt_event_proxy(int event, bluetooth_event_param_t *param, void *us
                        ((bt_device_connection_state_changed_cb)bt_event_slot_container[event_index].callback)
                            (false, conn_info, bt_event_slot_container[event_index].user_data);
                        __bt_free_bt_device_connection_info_s(conn_info);
+                       dbfw_rssi = 0;
                }
                break;
        case BLUETOOTH_EVENT_RSSI_ENABLED:

diff --git a/src/bluetooth-device.c b/src/bluetooth-device.c
index 3de6a4c..631ef41 100644 (file)
--- a/src/bluetooth-device.c
+++ b/src/bluetooth-device.c
@@ -933,4 +933,17 @@ int bt_device_le_set_data_length_change_cb(
 
        return BT_ERROR_NONE;
 }
+
+int bt_device_get_link_loss_rssi(int *rssi)
+{
+       BT_CHECK_INPUT_PARAMETER(rssi);
+
+       int value = _bt_get_link_loss_rssi();
+       if (value == 0)
+               return BT_ERROR_OPERATION_FAILED;
+
+       *rssi = value;
+       return BT_ERROR_NONE;
+}
+
 /* LCOV_EXCL_STOP */

diff --git a/test/bt_unit_test.c b/test/bt_unit_test.c
index 8cf14fa..1d859b8 100644 (file)
--- a/test/bt_unit_test.c
+++ b/test/bt_unit_test.c
@@ -2144,8 +2144,12 @@ void __bt_device_connection_state_changed_cb(bool connected,
        TC_PRT("__bt_device_connection_state_changed_cb [%d]", connected);
        TC_PRT("address [%s]", conn_info->remote_address);
        TC_PRT("link type [%d]", conn_info->link);
-       if (!connected)
+       if (!connected) {
+               int rssi;
                TC_PRT("disconnection reason [%d]", conn_info->disconn_reason);
+               if (bt_device_get_link_loss_rssi(&rssi) == BT_ERROR_NONE)
+                       TC_PRT("RSSI = %d", rssi);
+       }
 }
 
 void __bt_device_att_mtu_changed_cb(int result, bt_device_att_mtu_info_s *mtu_info, void *user_data)