add Peripheral ReadRSSI

Assets/CoreBluetooth/Samples/12_Debug/SampleDebug_Central.cs

@@ -140,6 +140,16 @@ public void DidUpdateNotificationStateForCharacteristic(CBPeripheral peripheral,
             }
         }
 
+        public void DidReadRSSI(CBPeripheral peripheral, int rssi, CBError error)
+        {
+            Debug.Log($"[DidReadRSSI] rssi: {rssi}");
+            if (error != null)
+            {
+                Debug.LogError($"[DidReadRSSI] error: {error}");
+                return;
+            }
+        }
+
         public void OnClickWrite()
         {
             if (_peripheral == null)
@@ -181,6 +191,17 @@ public void OnClickRead()
             _peripheral.ReadValue(_remoteCharacteristic);
         }
 
+        public void OnClickReadRSSI()
+        {
+            if (_peripheral == null)
+            {
+                Debug.Log("peripheral is null.");
+                return;
+            }
+
+            _peripheral.ReadRSSI();
+        }
+
         void OnDestroy()
         {
             if (_centralManager != null)

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Packages/com.teach310.core-bluetooth-for-unity/Runtime/CBPeripheral.cs

@@ -21,6 +21,7 @@ void DidUpdateValueForCharacteristic(CBPeripheral peripheral, CBCharacteristic c
         void DidWriteValueForCharacteristic(CBPeripheral peripheral, CBCharacteristic characteristic, CBError error) { }
         void IsReadyToSendWriteWithoutResponse(CBPeripheral peripheral) { }
         void DidUpdateNotificationStateForCharacteristic(CBPeripheral peripheral, CBCharacteristic characteristic, CBError error) { }
+        void DidReadRSSI(CBPeripheral peripheral, int rssi, CBError error) { }
     }
 
     /// <summary>
@@ -152,6 +153,15 @@ public bool CanSendWriteWithoutResponse
             }
         }
 
+        /// <summary>
+        /// Retrieves the current RSSI value for the peripheral while connected to the central manager.
+        /// </summary>
+        public void ReadRSSI()
+        {
+            ExceptionUtils.ThrowObjectDisposedExceptionIf(_disposed, this);
+            _nativePeripheral.ReadRSSI();
+        }
+
         internal CBCharacteristic FindCharacteristic(string serviceUUID, string characteristicUUID)
         {
             if (string.IsNullOrEmpty(serviceUUID))
@@ -231,6 +241,12 @@ void INativePeripheralDelegate.DidUpdateNotificationStateForCharacteristic(strin
             Delegate?.DidUpdateNotificationStateForCharacteristic(this, characteristic, error);
         }
 
+        void INativePeripheralDelegate.DidReadRSSI(int rssi, CBError error)
+        {
+            if (_disposed) return;
+            Delegate?.DidReadRSSI(this, rssi, error);
+        }
+
         public override string ToString()
         {
             return $"CBPeripheral: identifier = {Identifier}, name = {Name}, state = {State}";

Packages/com.teach310.core-bluetooth-for-unity/Runtime/NativeMethods.cs

@@ -76,6 +76,7 @@ int serviceUUIDsCount
         internal delegate void CB4UPeripheralDidWriteValueForCharacteristicHandler(IntPtr peripheralPtr, IntPtr serviceUUIDPtr, IntPtr characteristicUUIDPtr, int errorCode);
         internal delegate void CB4UPeripheralIsReadyToSendWriteWithoutResponseHandler(IntPtr peripheralPtr);
         internal delegate void CB4UPeripheralDidUpdateNotificationStateForCharacteristicHandler(IntPtr peripheralPtr, IntPtr serviceUUIDPtr, IntPtr characteristicUUIDPtr, int notificationState, int errorCode);
+        internal delegate void CB4UPeripheralDidReadRSSIHandler(IntPtr peripheralPtr, int rssi, int errorCode);
 
         [DllImport(DLL_NAME, CallingConvention = CallingConvention.Cdecl)]
         internal static extern void cb4u_peripheral_register_handlers(
@@ -85,7 +86,8 @@ internal static extern void cb4u_peripheral_register_handlers(
             CB4UPeripheralDidUpdateValueForCharacteristicHandler didUpdateValueForCharacteristicHandler,
             CB4UPeripheralDidWriteValueForCharacteristicHandler didWriteValueForCharacteristicHandler,
             CB4UPeripheralIsReadyToSendWriteWithoutResponseHandler isReadyToSendWriteWithoutResponseHandler,
-            CB4UPeripheralDidUpdateNotificationStateForCharacteristicHandler didUpdateNotificationStateForCharacteristicHandler
+            CB4UPeripheralDidUpdateNotificationStateForCharacteristicHandler didUpdateNotificationStateForCharacteristicHandler,
+            CB4UPeripheralDidReadRSSIHandler didReadRSSIHandler
         );
 
         [DllImport(DLL_NAME, CallingConvention = CallingConvention.Cdecl)]
@@ -152,6 +154,9 @@ internal static extern int cb4u_peripheral_set_notify_value(
         [return: MarshalAs(UnmanagedType.I1)]
         internal static extern bool cb4u_peripheral_can_send_write_without_response(SafeNativePeripheralHandle handle);
 
+        [DllImport(DLL_NAME, CallingConvention = CallingConvention.Cdecl)]
+        internal static extern void cb4u_peripheral_read_rssi(SafeNativePeripheralHandle handle);
+
         [DllImport(DLL_NAME, CallingConvention = CallingConvention.Cdecl)]
         internal static extern int cb4u_peripheral_characteristic_properties(
             SafeNativePeripheralHandle handle,

Packages/com.teach310.core-bluetooth-for-unity/Runtime/NativePeripheralProxy.cs

@@ -140,5 +140,10 @@ internal bool CanSendWriteWithoutResponse
                 return NativeMethods.cb4u_peripheral_can_send_write_without_response(_handle);
             }
         }
+
+        internal void ReadRSSI()
+        {
+            NativeMethods.cb4u_peripheral_read_rssi(_handle);
+        }
     }
 }

Packages/com.teach310.core-bluetooth-for-unity/Runtime/SafeNativePeripheralHandle.cs

@@ -12,6 +12,7 @@ void DidUpdateValueForCharacteristic(string serviceUUID, string characteristicUU
         void DidWriteValueForCharacteristic(string serviceUUID, string characteristicUUID, CBError error) { }
         void IsReadyToSendWriteWithoutResponse() { }
         void DidUpdateNotificationStateForCharacteristic(string serviceUUID, string characteristicUUID, bool enabled, CBError error) { }
+        void DidReadRSSI(int rssi, CBError error) { }
     }
 
     internal class SafeNativePeripheralHandle : SafeHandle
@@ -34,7 +35,8 @@ void RegisterHandlers()
                 DidUpdateValueForCharacteristic,
                 DidWriteValueForCharacteristic,
                 IsReadyToSendWriteWithoutResponse,
-                DidUpdateNotificationStateForCharacteristic
+                DidUpdateNotificationStateForCharacteristic,
+                DidReadRSSI
             );
         }
 
@@ -130,5 +132,14 @@ internal static void DidUpdateNotificationStateForCharacteristic(IntPtr peripher
                 CBError.CreateOrNullFromCode(errorCode)
             );
         }
+
+        [AOT.MonoPInvokeCallback(typeof(NativeMethods.CB4UPeripheralDidReadRSSIHandler))]
+        internal static void DidReadRSSI(IntPtr peripheralPtr, int rssi, int errorCode)
+        {
+            GetDelegate(peripheralPtr)?.DidReadRSSI(
+                rssi,
+                CBError.CreateOrNullFromCode(errorCode)
+            );
+        }
     }
 }