#define INCLUDE_FROM_SERVICEDISCOVERYPROTOCOL_C
#include "ServiceDiscoveryProtocol.h"
-SERVICE_ATTRIBUTE_TEXT(SDP_Attribute_Name, "SDP");
-SERVICE_ATTRIBUTE_TEXT(SDP_Attribute_Description, "BT Service Discovery");
-SERVICE_ATTRIBUTE_8BIT_LEN(SDP_Attribute_Availability, SDP_DATATYPE_UNSIGNED_INT, 1, {0xFF});
+/** Service Discovery Protocol attribute, indicationg the service's name. */
+SERVICE_ATTRIBUTE_TEXT(SDP_Attribute_Name, "SDP");
+/** Service Discovery Protocol attribute, indicationg the service's description. */
+SERVICE_ATTRIBUTE_TEXT(SDP_Attribute_Description, "BT Service Discovery");
+/** Service Discovery Protocol attribute, indicationg the service's availability. */
+SERVICE_ATTRIBUTE_LEN8(SDP_Attribute_Availability, SDP_DATATYPE_UnsignedInt, 1, {0xFF});
+/** Service Discovery Protocol attribute table, listing all supported attributes of the service. */
const ServiceAttributeTable_t SDP_Attribute_Table[] PROGMEM =
{
- {.AttributeID = SDP_ATTRIBUTE_NAME , .AttributeData = &SDP_Attribute_Name},
- {.AttributeID = SDP_ATTRIBUTE_DESCRIPTION , .AttributeData = &SDP_Attribute_Description},
- {.AttributeID = SDP_ATTRIBUTE_AVAILABILITY, .AttributeData = &SDP_Attribute_Availability},
+ {.AttributeID = SDP_ATTRIBUTE_NAME , .Data = &SDP_Attribute_Name},
+ {.AttributeID = SDP_ATTRIBUTE_DESCRIPTION , .Data = &SDP_Attribute_Description},
+ {.AttributeID = SDP_ATTRIBUTE_AVAILABILITY, .Data = &SDP_Attribute_Availability},
SERVICE_ATTRIBUTE_TABLE_TERMINATOR
};
-SERVICE_ATTRIBUTE_TEXT(RFCOMM_Attribute_Name, "RFCOMM");
-SERVICE_ATTRIBUTE_TEXT(RFCOMM_Attribute_Description, "Virtual Serial");
-SERVICE_ATTRIBUTE_8BIT_LEN(RFCOMM_Attribute_Availability, SDP_DATATYPE_UNSIGNED_INT, 1, {0xFF});
+/** RFCOMM Service attribute, indicationg the service's name. */
+SERVICE_ATTRIBUTE_TEXT(RFCOMM_Attribute_Name, "RFCOMM");
+/** RFCOMM Service attribute, indicationg the service's description. */
+SERVICE_ATTRIBUTE_TEXT(RFCOMM_Attribute_Description, "Virtual Serial");
+/** RFCOMM Service attribute, indicationg the service's availability. */
+SERVICE_ATTRIBUTE_LEN8(RFCOMM_Attribute_Availability, SDP_DATATYPE_UnsignedInt, 1, {0xFF});
+/** RFCOMM Service attribute table, listing all supported attributes of the service. */
const ServiceAttributeTable_t RFCOMM_Attribute_Table[] PROGMEM =
{
- {.AttributeID = SDP_ATTRIBUTE_NAME , .AttributeData = &RFCOMM_Attribute_Name},
- {.AttributeID = SDP_ATTRIBUTE_DESCRIPTION , .AttributeData = &RFCOMM_Attribute_Description},
- {.AttributeID = SDP_ATTRIBUTE_AVAILABILITY, .AttributeData = &RFCOMM_Attribute_Availability},
+ {.AttributeID = SDP_ATTRIBUTE_NAME , .Data = &RFCOMM_Attribute_Name},
+ {.AttributeID = SDP_ATTRIBUTE_DESCRIPTION , .Data = &RFCOMM_Attribute_Description},
+ {.AttributeID = SDP_ATTRIBUTE_AVAILABILITY, .Data = &RFCOMM_Attribute_Availability},
SERVICE_ATTRIBUTE_TABLE_TERMINATOR
};
+/** Master service table, listing all supported services (and their attribute tables) of the device, including
+ * each service's UUID.
+ */
const ServiceTable_t SDP_Services_Table[] =
{
{ // 128-bit UUID for the SDP service
},
};
+/* Base UUID value common to all standardized Bluetooth services */
const uint8_t BaseUUID[] = {BASE_96BIT_UUID, 0x00, 0x00, 0x00, 0x00};
const void* CurrentParameter = ((void*)SDPHeader + sizeof(SDP_PDUHeader_t));
BT_SDP_DEBUG(1, "<< Service Search Attribute");
-
- uint8_t ElementHeaderSize;
- uint8_t UUIDList[12][16];
+ uint8_t UUIDList[12][UUID_SIZE_BYTES];
uint8_t TotalUUIDs = ServiceDiscovery_GetUUIDList(UUIDList, &CurrentParameter);
BT_SDP_DEBUG(2, "-- Total UUIDs: %d", TotalUUIDs);
uint16_t MaxAttributeSize = ServiceDiscovery_Read16BitParameter(&CurrentParameter);
BT_SDP_DEBUG(2, "-- Max Return Attribute Bytes: 0x%04X", MaxAttributeSize);
- uint16_t AttributeIDListLength = ServiceDiscovery_GetDataElementSize(&CurrentParameter, &ElementHeaderSize);
+ struct
+ {
+ SDP_PDUHeader_t SDPHeader;
+ uint16_t AttributeListByteCount;
+ uint8_t ResponseData[100];
+ } ResponsePacket;
+
+ if (MaxAttributeSize > sizeof(ResponsePacket.ResponseData))
+ MaxAttributeSize = sizeof(ResponsePacket.ResponseData);
+
+ ResponsePacket.AttributeListByteCount = ServiceDiscovery_ProcessAttributes(UUIDList, TotalUUIDs,
+ ResponsePacket.ResponseData,
+ MaxAttributeSize, &CurrentParameter);
+ ResponsePacket.SDPHeader.PDU = SDP_PDU_SERVICESEARCHATTRIBUTERESPONSE;
+ ResponsePacket.SDPHeader.TransactionID = SDPHeader->TransactionID;
+ ResponsePacket.SDPHeader.ParameterLength = (ResponsePacket.AttributeListByteCount + sizeof(ResponsePacket.AttributeListByteCount));
+
+ Bluetooth_SendPacket(&ResponsePacket, (sizeof(ResponsePacket.SDPHeader) + ResponsePacket.SDPHeader.ParameterLength),
+ Channel);
+}
+
+static uint8_t ServiceDiscovery_ProcessAttributes(uint8_t UUIDList[][UUID_SIZE_BYTES], const uint8_t TotalUUIDs, uint8_t* ResponseBuffer,
+ uint8_t MaxResponseSize, const void** CurrentParameter)
+{
+ uint16_t* AttributeResponseSize = ServiceDiscovery_AddDataElementHeader(&ResponseBuffer, SDP_DATATYPE_UnsignedInt);
+ uint8_t ElementHeaderSize;
+
+ uint16_t AttributeIDListLength = ServiceDiscovery_GetDataElementSize(CurrentParameter, &ElementHeaderSize);
BT_SDP_DEBUG(2, "-- Total Attribute Length: 0x%04X", AttributeIDListLength);
while (AttributeIDListLength)
{
- uint8_t AttributeLength = ServiceDiscovery_GetDataElementSize(&CurrentParameter, &ElementHeaderSize);
+ uint8_t AttributeLength = ServiceDiscovery_GetDataElementSize(CurrentParameter, &ElementHeaderSize);
uint32_t Attribute = 0;
- memcpy(&Attribute, CurrentParameter, AttributeLength);
-
+ memcpy(&((char*)&Attribute)[sizeof(uint32_t) - AttributeLength], *CurrentParameter, AttributeLength);
+
BT_SDP_DEBUG(2, "-- Attribute(%d): 0x%08lX", AttributeLength, Attribute);
+
+ *AttributeResponseSize += ServiceDiscovery_GetAttribute(UUIDList, TotalUUIDs, Attribute, &ResponseBuffer,
+ (MaxResponseSize - *AttributeResponseSize));
AttributeIDListLength -= (AttributeLength + ElementHeaderSize);
- CurrentParameter += AttributeLength;
+ *CurrentParameter += AttributeLength;
}
- struct
+ return *AttributeResponseSize;
+}
+
+static uint8_t ServiceDiscovery_GetAttribute(uint8_t UUIDList[][UUID_SIZE_BYTES], const uint8_t TotalUUIDs, const uint32_t Attribute,
+ uint8_t** DataBuffer, uint8_t BufferLen)
+{
+ for (uint8_t CurrTableItem = 0; CurrTableItem < (sizeof(SDP_Services_Table) / sizeof(ServiceTable_t)); CurrTableItem++)
{
- SDP_PDUHeader_t SDPHeader;
- uint8_t ResponseData[100];
- } ResponsePacket;
-
- ResponsePacket.SDPHeader.PDU = SDP_PDU_SERVICESEARCHATTRIBUTERESPONSE;
- ResponsePacket.SDPHeader.TransactionID = SDPHeader->TransactionID;
-
- Bluetooth_SendPacket(&ResponsePacket, (sizeof(ResponsePacket.SDPHeader) + ResponsePacket.SDPHeader.ParameterLength),
- Channel);
+ for (uint8_t CurrUUIDIndex = 0; CurrUUIDIndex < TotalUUIDs; CurrUUIDIndex++)
+ {
+ if (!(memcmp(SDP_Services_Table[CurrTableItem].UUID, UUIDList[CurrUUIDIndex], UUID_SIZE_BYTES)))
+ {
+ const ServiceAttributeTable_t* AttributeTable = SDP_Services_Table[CurrTableItem].AttributeTable;
+
+ // TODO: Process attribute table
+ BT_SDP_DEBUG(2, "FOUND UUID IN TABLE");
+
+ break;
+ }
+ }
+ }
+
+ return 0;
}
-static uint8_t ServiceDiscovery_GetUUIDList(uint8_t UUIDList[12][16], const void** CurrentParameter)
+static uint8_t ServiceDiscovery_GetUUIDList(uint8_t UUIDList[][UUID_SIZE_BYTES], const void** CurrentParameter)
{
uint8_t ElementHeaderSize;
uint8_t TotalUUIDs = 0;
while (ServicePatternLength)
{
uint8_t* CurrentUUID = UUIDList[TotalUUIDs++];
-
- uint8_t UUIDLength = ServiceDiscovery_GetDataElementSize(CurrentParameter, &ElementHeaderSize);
+ uint8_t UUIDLength = ServiceDiscovery_GetDataElementSize(CurrentParameter, &ElementHeaderSize);
memcpy(CurrentUUID, BaseUUID, sizeof(BaseUUID));
-
- if (UUIDLength <= 32)
- memcpy(&CurrentUUID[sizeof(BaseUUID) - sizeof(uint32_t)], *CurrentParameter, UUIDLength);
- else
- memcpy(CurrentUUID, *CurrentParameter, UUIDLength);
+ memcpy(&CurrentUUID[(UUIDLength <= 32) ? (sizeof(BaseUUID) - 32) : 0], *CurrentParameter, UUIDLength);
BT_SDP_DEBUG(2, "-- UUID (%d): 0x%02X%02X%02X%02X-%02X%02X-%02X%02X-%02X%02X-%02X%02X%02X%02X%02X%02X",
UUIDLength,
static uint32_t ServiceDiscovery_GetDataElementSize(const void** DataElementHeader, uint8_t* ElementHeaderSize)
{
+ /* Fetch the size of the Data Element structure from the header, increment the current buffer pos */
uint8_t SizeIndex = (*((uint8_t*)*DataElementHeader) & 0x07);
*DataElementHeader += sizeof(uint8_t);
- *ElementHeaderSize = 1;
-
uint32_t ElementValue;
-
+
+ /* Convert the Data Element size index into a size in bytes */
switch (SizeIndex)
{
case 5:
*ElementHeaderSize = (1 + sizeof(uint32_t));
break;
default:
- ElementValue = (1UL << SizeIndex);
+ ElementValue = (1 << SizeIndex);
+ *ElementHeaderSize = 1;
break;
}
projects / pub / lufa.git / blobdiff