Fix byte ordering of UUIDs in the SDP server - host can now successfully pair to the Bluetooth device and discover the exposed Serial Port Profile RFCOMM service.

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

@@ -34,7 +34,7 @@ const struct
 {
 	uint8_t  Header;
 	uint32_t Data;
-} PROGMEM RFCOMM_Attribute_ServiceHandle =
+} PROGMEM SerialPort_Attribute_ServiceHandle =
 	{
 		(SDP_DATATYPE_UnsignedInt | SDP_DATASIZE_32Bit),
 		SWAPENDIAN_32(0x00010001),
@@ -45,7 +45,7 @@ const struct
 	uint8_t    Header;
 	uint16_t   Size;
 	ItemUUID_t UUIDList[];
-} PROGMEM RFCOMM_Attribute_ServiceClassIDs =
+} PROGMEM SerialPort_Attribute_ServiceClassIDs =
 	{
 		(SDP_DATATYPE_Sequence | SDP_DATASIZE_Variable16Bit),
 		SWAPENDIAN_16(sizeof(ItemUUID_t) * 1),
@@ -56,11 +56,11 @@ const struct
 
 const struct
 {
-	uint8_t        Header;
+	uint8_t  Header;
-	uint16_t       Size;
+	uint16_t Size;
 
 	ItemProtocol_t ProtocolList[];
-} PROGMEM RFCOMM_Attribute_ProtocolDescriptor =
+} PROGMEM SerialPort_Attribute_ProtocolDescriptor =
 	{
 		(SDP_DATATYPE_Sequence | SDP_DATASIZE_Variable16Bit),
 		SWAPENDIAN_16(sizeof(ItemProtocol_t) * 2),
@@ -87,7 +87,7 @@ const struct
 	uint8_t    Header;
 	uint16_t   Size;
 	ItemUUID_t UUIDList[];
-} PROGMEM RFCOMM_Attribute_BrowseGroupList =
+} PROGMEM SerialPort_Attribute_BrowseGroupList =
 	{
 		(SDP_DATATYPE_Sequence | SDP_DATASIZE_Variable16Bit),
 		SWAPENDIAN_16(sizeof(ItemUUID_t) * 1),
@@ -98,14 +98,14 @@ const struct
 	
 const struct
 {
-	uint8_t      Header;
+	uint8_t            Header;
-	uint8_t      Size;
+	uint8_t            Size;
-	ItemLangID_t OffsetList[];
+	ItemLangEncoding_t LanguageEncodings[];
-} PROGMEM RFCOMM_Attribute_LanguageBaseIDOffset =
+} PROGMEM SerialPort_Attribute_LanguageBaseIDOffset =
 	{
 		.Header = (SDP_DATATYPE_Sequence | SDP_DATASIZE_Variable8Bit),
-		.Size   = (sizeof(ItemLangID_t) * 1),
+		.Size   = (sizeof(ItemLangEncoding_t) * 1),
-		.OffsetList =
+		.LanguageEncodings =
 			{
 				{
 					{(SDP_DATATYPE_UnsignedInt | SDP_DATASIZE_16Bit), SWAPENDIAN_16(0x454E)},
@@ -120,11 +120,11 @@ const struct
 	uint8_t Header;
 	uint8_t Size;
 	char    Text[];
-} PROGMEM RFCOMM_Attribute_ServiceName =
+} PROGMEM SerialPort_Attribute_ServiceName =
 	{
 		(SDP_DATATYPE_String | SDP_DATASIZE_Variable8Bit),
-		sizeof("Serial Port") - 1,
+		sizeof("Wireless Serial Port") - 1,
-		"Serial Port",
+		"Wireless Serial Port",
 	};
 
 const struct
@@ -132,22 +132,22 @@ const struct
 	uint8_t Header;
 	uint8_t Size;
 	char    Text[];
-} PROGMEM RFCOMM_Attribute_ServiceDescription =
+} PROGMEM SerialPort_Attribute_ServiceDescription =
 	{
 		(SDP_DATATYPE_String | SDP_DATASIZE_Variable8Bit),
 		sizeof("Wireless Serial Port Service") - 1,
 		"Wireless Serial Port Service",
 	};
 
-const ServiceAttributeTable_t PROGMEM RFCOMM_Attribute_Table[] =
+const ServiceAttributeTable_t PROGMEM SerialPort_Attribute_Table[] =
 	{
-		{.AttributeID = SDP_ATTRIBUTE_ID_SERVICERECORDHANDLE,    .Data = &RFCOMM_Attribute_ServiceHandle       },
+		{.AttributeID = SDP_ATTRIBUTE_ID_SERVICERECORDHANDLE,    .Data = &SerialPort_Attribute_ServiceHandle       },
-		{.AttributeID = SDP_ATTRIBUTE_ID_SERVICECLASSIDS,        .Data = &RFCOMM_Attribute_ServiceClassIDs     },
+		{.AttributeID = SDP_ATTRIBUTE_ID_SERVICECLASSIDS,        .Data = &SerialPort_Attribute_ServiceClassIDs     },
-		{.AttributeID = SDP_ATTRIBUTE_ID_PROTOCOLDESCRIPTORLIST, .Data = &RFCOMM_Attribute_ProtocolDescriptor  },
+		{.AttributeID = SDP_ATTRIBUTE_ID_PROTOCOLDESCRIPTORLIST, .Data = &SerialPort_Attribute_ProtocolDescriptor  },
-		{.AttributeID = SDP_ATTRIBUTE_ID_BROWSEGROUPLIST,        .Data = &RFCOMM_Attribute_BrowseGroupList     },
+		{.AttributeID = SDP_ATTRIBUTE_ID_BROWSEGROUPLIST,        .Data = &SerialPort_Attribute_BrowseGroupList     },
-		{.AttributeID = SDP_ATTRIBUTE_ID_LANGUAGEBASEATTROFFSET, .Data = &RFCOMM_Attribute_LanguageBaseIDOffset},
+		{.AttributeID = SDP_ATTRIBUTE_ID_LANGUAGEBASEATTROFFSET, .Data = &SerialPort_Attribute_LanguageBaseIDOffset},
-		{.AttributeID = SDP_ATTRIBUTE_ID_SERVICENAME,            .Data = &RFCOMM_Attribute_ServiceName         },
+		{.AttributeID = SDP_ATTRIBUTE_ID_SERVICENAME,            .Data = &SerialPort_Attribute_ServiceName         },
-		{.AttributeID = SDP_ATTRIBUTE_ID_SERVICEDESCRIPTION,     .Data = &RFCOMM_Attribute_ServiceDescription  },
+		{.AttributeID = SDP_ATTRIBUTE_ID_SERVICEDESCRIPTION,     .Data = &SerialPort_Attribute_ServiceDescription  },
 
 		SERVICE_ATTRIBUTE_TABLE_TERMINATOR
 	};

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

@@ -44,43 +44,58 @@
 		#define UUID_SIZE_BYTES                         16
 		
 		/** First 80 bits common to all standardized Bluetooth services. */
-		#define BASE_80BIT_UUID                         SWAPENDIAN_32(0xFB349B5F), SWAPENDIAN_16(0x8000), SWAPENDIAN_16(0x0080), SWAPENDIAN_16(0x0010)
+		#define BASE_80BIT_UUID                         0x0000, 0x0010, 0x0080, {0x00, 0x80, 0x5F, 0x9B, 0x34, 0xFB}
 		
-		#define SDP_UUID                                {BASE_80BIT_UUID, {0x00, 0x00, 0x00, 0x00, 0x00, 0x01}}
+		#define RFCOMM_UUID                             {SWAPENDIAN_32(0x00000003), BASE_80BIT_UUID}
-		#define RFCOMM_UUID                             {BASE_80BIT_UUID, {0x00, 0x00, 0x00, 0x00, 0x00, 0x03}}
+		#define L2CAP_UUID                              {SWAPENDIAN_32(0x00000100), BASE_80BIT_UUID}
-		#define L2CAP_UUID                              {BASE_80BIT_UUID, {0x00, 0x00, 0x00, 0x00, 0x01, 0x00}}
+		#define SP_CLASS_UUID                           {SWAPENDIAN_32(0x00001101), BASE_80BIT_UUID}
-		#define SDP_CLASS_UUID                          {BASE_80BIT_UUID, {0x00, 0x00, 0x00, 0x00, 0x10, 0x00}}
+		#define PUBLICBROWSEGROUP_CLASS_UUID            {SWAPENDIAN_32(0x00001002), BASE_80BIT_UUID}
-		#define SP_CLASS_UUID                           {BASE_80BIT_UUID, {0x00, 0x00, 0x00, 0x00, 0x11, 0x01}}
-		#define PUBLICBROWSEGROUP_CLASS_UUID            {BASE_80BIT_UUID, {0x00, 0x00, 0x00, 0x00, 0x10, 0x02}}
 		
 		#define SDP_ATTRIBUTE_ID_SERVICERECORDHANDLE    0x0000
 		#define SDP_ATTRIBUTE_ID_SERVICECLASSIDS        0x0001
 		#define SDP_ATTRIBUTE_ID_PROTOCOLDESCRIPTORLIST 0x0004
 		#define SDP_ATTRIBUTE_ID_BROWSEGROUPLIST        0x0005
 		#define SDP_ATTRIBUTE_ID_LANGUAGEBASEATTROFFSET 0x0006
-		#define SDP_ATTRIBUTE_ID_VERSION                0x0200
 		#define SDP_ATTRIBUTE_ID_SERVICENAME            0x0100
 		#define SDP_ATTRIBUTE_ID_SERVICEDESCRIPTION     0x0101
 		
+		/** Swaps the byte ordering of a 16-bit value at compile time. Do not use this macro for swapping byte orderings
+		 *  of dynamic values computed at runtime -- use SwapEndian_16() instead.
+		 *
+		 *  \param[in]  x  16-bit value whose byte ordering is to be swapped
+		 *
+		 *  \return Input value with the byte ordering reversed
+		 */
 		#define SWAPENDIAN_16(x)                        ((((x) & 0xFF00) >> 8) | (((x) & 0x00FF) << 8))
-		#define SWAPENDIAN_32(x)                        ((((x) & 0xFF000000) >> 24) | (((x) & 0x00FF0000) >> 8) | \
+
-		                                                 (((x) & 0x0000FF00) << 8) | (((x) & 0x000000FF) << 24))
+		/** Swaps the byte ordering of a 32-bit value at compile time. Do not use this macro for swapping byte orderings
+		 *  of dynamic values computed at runtime -- use SwapEndian_32() instead.
+		 *
+		 *  \param[in]  x  32-bit value whose byte ordering is to be swapped
+		 *
+		 *  \return Input value with the byte ordering reversed
+		 */
+		#define SWAPENDIAN_32(x)                        ((((x) & 0xFF000000UL) >> 24UL) | (((x) & 0x00FF0000UL) >> 8UL) | \
+		                                                 (((x) & 0x0000FF00UL) << 8UL) | (((x) & 0x000000FFUL) << 24UL))
 		
 		/** Terminator for a service attribute table of type \ref ServiceAttributeTable_t. */
 		#define SERVICE_ATTRIBUTE_TABLE_TERMINATOR      {.Data = NULL}
 		
 	/* Type Defines: */
+		/** Type define for a UUID value structure. This struct can be used to hold full 128-bit UUIDs. */
 		typedef struct
 		{
-			uint32_t A;
+			uint32_t A; /**< Bits 0-31 of the UUID. */
-			uint16_t B;
+			uint16_t B; /**< Bits 32-47 of the UUID. */
-			uint16_t C;
+			uint16_t C; /**< Bits 48-63 of the UUID. */
-			uint16_t D;
+			uint16_t D; /**< Bits 64-79 of the UUID. */
-			uint8_t  E[6];
+			uint8_t  E[6]; /**< Bits 80-128 of the UUID. */
 		} UUID_t;
 	
 		/** Structure for the association of attribute ID values to an attribute value in FLASH. A table of these
 		 *  structures can then be built up for each supported UUID service within the device.
+		 *
+		 *  \note This table must be terminated with a \ref SERVICE_ATTRIBUTE_TABLE_TERMINATOR element.
 		 */
 		typedef struct
 		{
@@ -130,14 +145,17 @@
 			} Protocol;
 		} ItemProtocol_t;
 		
+		/** Structure for a list of Data Elements containing language encodings, including the language ID, Encoding ID and
+		 *  Attribute base offset.
+		 */
 		typedef struct
 		{
-			Item16Bit_t LanguageID;
+			Item16Bit_t LanguageID; /**< Language ID for the current language */
-			Item16Bit_t EncodingID;
+			Item16Bit_t EncodingID; /**< Encoding used for the current language */
-			Item16Bit_t OffsetID;
+			Item16Bit_t OffsetID; /**< Attribute offset added to all strings using this language within the service */
-		} ItemLangID_t;
+		} ItemLangEncoding_t;
 		
 	/* External Variables: */
-		extern const ServiceAttributeTable_t RFCOMM_Attribute_Table[];
+		extern const ServiceAttributeTable_t SerialPort_Attribute_Table[];
 		
 #endif

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

@@ -34,11 +34,11 @@
 /** Service attribute table list, containing a pointer to each service attribute table the device contains */
 const ServiceAttributeTable_t* SDP_Services_Table[] PROGMEM =
 	{
-		RFCOMM_Attribute_Table,
+		SerialPort_Attribute_Table,
 	};
 
 /** Base UUID value common to all standardized Bluetooth services */
-const UUID_t BaseUUID PROGMEM = {BASE_80BIT_UUID, {0, 0, 0, 0, 0, 0}};
+const UUID_t BaseUUID PROGMEM = {0x00000000, BASE_80BIT_UUID};
 
 /** Main Service Discovery Protocol packet processing routine. This function processes incomming SDP packets from
  *  a connected Bluetooth device, and sends back appropriate responses to allow other devices to determine the
@@ -487,6 +487,16 @@ static void SDP_CheckUUIDMatch(uint8_t UUIDList[][UUID_SIZE_BYTES], const uint8_
 		/* Look for matches in the UUID list against the current attribute UUID value */
 		for (uint8_t i = 0; i < TotalUUIDs; i++)
 		{
+			uint8_t CurrentUUID[16];
+			memcpy_P(CurrentUUID, (CurrAttribute + 1), 16);
+		
+			BT_SDP_DEBUG(2, "-- TEST UUID: %02X%02X%02X%02X-%02X%02X-%02X%02X-%02X%02X-%02X%02X%02X%02X%02X%02X",
+		                CurrentUUID[0], CurrentUUID[1], CurrentUUID[2], CurrentUUID[3],
+		                CurrentUUID[4], CurrentUUID[5],
+						CurrentUUID[6], CurrentUUID[7],
+		                CurrentUUID[8], CurrentUUID[9],
+						CurrentUUID[10], CurrentUUID[11], CurrentUUID[12],  CurrentUUID[13],  CurrentUUID[14],  CurrentUUID[15]);
+
 			if (!(UUIDMatch[i]) && !(memcmp_P(UUIDList[i], (CurrAttribute + 1), UUID_SIZE_BYTES)))
 			{
 				/* Indicate match found for the current attribute UUID and early-abort */
@@ -580,19 +590,28 @@ static uint8_t SDP_GetUUIDList(uint8_t UUIDList[][UUID_SIZE_BYTES], const void**
 		uint8_t* CurrentUUID = UUIDList[TotalUUIDs++];
 		uint8_t  UUIDLength  = SDP_GetDataElementSize(CurrentParameter, &ElementHeaderSize);
 		
-		/* Copy over the base UUID value to the free UUID slot in the list */
-		memcpy_P(CurrentUUID, &BaseUUID, sizeof(BaseUUID));
-
 		/* Copy over UUID from the container to the free slot */
-		memcpy(&CurrentUUID[UUID_SIZE_BYTES - UUIDLength], *CurrentParameter, UUIDLength);
+		if (UUIDLength <= 4)
+		{
+			/* Copy over the base UUID value to the free UUID slot in the list */
+			memcpy_P(CurrentUUID, &BaseUUID, sizeof(BaseUUID));
+
+			/* Copy over short UUID */
+			memcpy(CurrentUUID + (4 - UUIDLength), *CurrentParameter, UUIDLength);
+		}
+		else
+		{
+			/* Copy over full UUID */
+			memcpy(CurrentUUID, *CurrentParameter, UUIDLength);		
+		}
 		
 		BT_SDP_DEBUG(2, "-- UUID (%d): %02X%02X%02X%02X-%02X%02X-%02X%02X-%02X%02X-%02X%02X%02X%02X%02X%02X",
 		                UUIDLength,
 		                CurrentUUID[0], CurrentUUID[1], CurrentUUID[2], CurrentUUID[3],
 		                CurrentUUID[4], CurrentUUID[5],
-						CurrentUUID[6],  CurrentUUID[7],
+						CurrentUUID[6], CurrentUUID[7],
-		                CurrentUUID[8],  CurrentUUID[9],
+		                CurrentUUID[8], CurrentUUID[9],
-						CurrentUUID[10],  CurrentUUID[11], CurrentUUID[12],  CurrentUUID[13],  CurrentUUID[14],  CurrentUUID[15]);
+						CurrentUUID[10], CurrentUUID[11], CurrentUUID[12],  CurrentUUID[13],  CurrentUUID[14],  CurrentUUID[15]);
 
 		ServicePatternLength -= (UUIDLength + ElementHeaderSize);
 		*CurrentParameter    += UUIDLength;

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

@@ -50,7 +50,7 @@
 		
 	/* Macros: */
 		#define BT_SDP_DEBUG(l, s, ...)                 do { if (SDP_DEBUG_LEVEL >= l) printf_P(PSTR("(SDP) " s "\r\n"), ##__VA_ARGS__); } while (0)
-		#define SDP_DEBUG_LEVEL                         1
+		#define SDP_DEBUG_LEVEL                         0
 		
 		#define SDP_PDU_ERRORRESPONSE                   0x01
 		#define SDP_PDU_SERVICESEARCHREQUEST            0x02