Add bluetooth channel connection callback to the incomplete BluetoothHost demo.

Demos/Host/Incomplete/BluetoothHost/BluetoothHost.c

@@ -238,6 +238,20 @@ void Bluetooth_DisconnectionComplete(void)
 	         Bluetooth_Connection.RemoteAddress[1], Bluetooth_Connection.RemoteAddress[0]);
 }
 
+/** Bluetooth stack callback event for a Bluetooth ACL Channel connection request. When is callback fires,
+ *  the user application must indicate if the channel connection should be rejected or not, based on the 
+ *  protocol (PSM) value of the requested channel.
+ *
+ *  \param PSM  Protocol PSM value for the requested channel
+ *
+ *  \return Boolean true to accept the channel connection request, false to reject it
+ */
+bool Bluetooth_ChannelConnectionRequest(uint16_t PSM)
+{
+	/* Always accept channel connection requests regardless of PSM */
+	return true;
+}
+
 /** Bluetooth stack callback event for a non-signal ACL packet reception. This callback fires once a connection
  *  to a remote Bluetooth device has been made, and the remote device has sent a non-signalling ACL packet.
  *

Demos/Host/Incomplete/BluetoothHost/Lib/BluetoothACLPackets.c

@@ -381,14 +381,26 @@ static inline void Bluetooth_Signal_ConnectionReq(BT_Signal_Header_t* SignalComm
 			}
 		}
 	}
+	
+	uint8_t ChannelStatus = BT_CONNECTION_REFUSED_RESOURCES;
 
 	/* Reset the channel item contents only if a channel entry was found for it */
 	if (ChannelData != NULL)
 	{
-		ChannelData->RemoteNumber = ConnectionRequest.SourceChannel;
-		ChannelData->PSM          = ConnectionRequest.PSM;
-		ChannelData->LocalMTU     = MAXIMUM_CHANNEL_MTU;
-		ChannelData->State        = Channel_Config_WaitConfig;
+		/* Check if the user application will allow the connection based on its PSM */
+		if (Bluetooth_ChannelConnectionRequest(ConnectionRequest.PSM))
+		{
+			ChannelData->RemoteNumber = ConnectionRequest.SourceChannel;
+			ChannelData->PSM          = ConnectionRequest.PSM;
+			ChannelData->LocalMTU     = MAXIMUM_CHANNEL_MTU;
+			ChannelData->State        = Channel_Config_WaitConfig;
+			
+			ChannelStatus = BT_CONNECTION_SUCCESSFUL;
+		}
+		else
+		{
+			ChannelStatus = BT_CONNECTION_REFUSED_PSM;		
+		}
 	}
 	
 	struct
@@ -405,8 +417,7 @@ static inline void Bluetooth_Signal_ConnectionReq(BT_Signal_Header_t* SignalComm
 	/* Fill out the Connection Response in the response packet */
 	ResponsePacket.ConnectionResponse.DestinationChannel = ChannelData->LocalNumber;
 	ResponsePacket.ConnectionResponse.SourceChannel      = ChannelData->RemoteNumber;
-	ResponsePacket.ConnectionResponse.Result             = (ChannelData == NULL) ? BT_CONNECTION_REFUSED_RESOURCES :
-	                                                                               BT_CONNECTION_SUCCESSFUL;
+	ResponsePacket.ConnectionResponse.Result             = ChannelStatus;
 	ResponsePacket.ConnectionResponse.Status             = 0x00;
 	
 	Bluetooth_SendPacket(&ResponsePacket, sizeof(ResponsePacket), NULL);

Demos/Host/Incomplete/BluetoothHost/Lib/BluetoothACLPackets.h

@@ -70,6 +70,7 @@
 		#define BT_INFORMATION_NOTSUPPORTED       0x0001
 		
 		#define BT_CONNECTION_SUCCESSFUL          0x0000
+		#define BT_CONNECTION_REFUSED_PSM         0x0002
 		#define BT_CONNECTION_REFUSED_RESOURCES   0x0004
 		
 		#define BT_CONFIGURATION_SUCCESSFUL       0x0000

Demos/Host/Incomplete/BluetoothHost/Lib/BluetoothStack.h

@@ -127,6 +127,7 @@
 		bool                 Bluetooth_ConnectionRequest(uint8_t* RemoteAddress);
 		void                 Bluetooth_ConnectionComplete(void);
 		void                 Bluetooth_DisconnectionComplete(void);
+		bool                 Bluetooth_ChannelConnectionRequest(uint16_t PSM);
 		void                 Bluetooth_PacketReceived(void* Data, uint16_t DataLen, Bluetooth_Channel_t* Channel);
 		Bluetooth_Channel_t* Bluetooth_GetChannelData(uint16_t ChannelNumber, bool SearchByRemoteChannel);
 		Bluetooth_Channel_t* Bluetooth_OpenChannel(uint16_t PSM);