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Document the Bluetooth ACL layer. Remove unneeded parameters from the signalling command processing routines.

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Change over the code so that the bluetooth packet data is read in by the stack rather than the user application, to make it more unform for sending/receiving, and so the library can handle incomming fragmentation in the future.

Start Service Discovery Protocol decoding and processing.
This commit is contained in:
Dean Camera
2010-04-13 11:19:04 +00:00
parent 882ef0c983
commit e55f338663
12 changed files with 361 additions and 127 deletions
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Demos/Host/Incomplete/BluetoothHost/Lib/BluetoothACLPackets.c
+188 -60
View File
@@ -31,16 +31,22 @@
#define INCLUDE_FROM_BLUETOOTH_ACLPACKETS_C
#include "BluetoothACLPackets.h"
/** Bluetooth ACL processing task. This task should be called repeatedly the main Bluetooth
* stack task to manage the ACL processing state.
*/
void Bluetooth_ACLTask(void)
{
Bluetooth_ProcessACLPackets();
/* Process incomming ACL packets, if any */
Bluetooth_ProcessIncommingACLPackets();
/* Check for any half-open channels, send configuration details to the remote device if found */
for (uint8_t i = 0; i < BLUETOOTH_MAX_OPEN_CHANNELS; i++)
{
Bluetooth_Channel_t* ChannelData = &Bluetooth_Connection.Channels[i];
bool MustSendConfigReq = true;
/* Check if we are in a channel state which requires a configuration request to be sent */
switch (ChannelData->State)
{
case Channel_Config_WaitConfig:
@@ -54,6 +60,7 @@ void Bluetooth_ACLTask(void)
break;
}
/* Only send a configuration request if it the channel was in a state which required it */
if (MustSendConfigReq)
{
struct
@@ -68,10 +75,13 @@ void Bluetooth_ACLTask(void)
} Option_LocalMTU;
} PacketData;
/* Fill out the Signal Command header in the response packet */
PacketData.SignalCommandHeader.Code = BT_SIGNAL_CONFIGURATION_REQUEST;
PacketData.SignalCommandHeader.Identifier = ++Bluetooth_Connection.SignallingIdentifier;
PacketData.SignalCommandHeader.Length = sizeof(PacketData.ConfigurationRequest) +
sizeof(PacketData.Option_LocalMTU);
/* Fill out the Configuration Request in the response packet, including local MTU information */
PacketData.ConfigurationRequest.DestinationChannel = ChannelData->RemoteNumber;
PacketData.ConfigurationRequest.Flags = 0;
PacketData.Option_LocalMTU.Header.Type = BT_CONFIG_OPTION_MTU;
@@ -86,7 +96,11 @@ void Bluetooth_ACLTask(void)
}
}
static void Bluetooth_ProcessACLPackets(void)
/** Incomming ACL packet processing task. This task is called by the main ACL processing task to read in and process
* any incomming ACL packets to the device, handling signal requests as they are received or passing along channel
* data to the user application.
*/
static void Bluetooth_ProcessIncommingACLPackets(void)
{
BT_ACL_Header_t ACLPacketHeader;
BT_DataPacket_Header_t DataHeader;
@@ -100,6 +114,7 @@ static void Bluetooth_ProcessACLPackets(void)
return;
}
/* Read in the received ACL packet headers when it has been discovered that a packet has been received */
Pipe_Read_Stream_LE(&ACLPacketHeader, sizeof(ACLPacketHeader));
Pipe_Read_Stream_LE(&DataHeader, sizeof(DataHeader));
@@ -110,36 +125,39 @@ static void Bluetooth_ProcessACLPackets(void)
BT_ACL_DEBUG(2, "-- Destination Channel: 0x%04X", DataHeader.DestinationChannel);
BT_ACL_DEBUG(2, "-- Payload Length: 0x%04X", DataHeader.PayloadLength);
/* Check the packet's destination channel - signalling channel should be processed by the stack internally */
if (DataHeader.DestinationChannel == BT_CHANNEL_SIGNALING)
{
/* Read in the Signal Command header of the incomming packet */
BT_Signal_Header_t SignalCommandHeader;
Pipe_Read_Stream_LE(&SignalCommandHeader, sizeof(SignalCommandHeader));
/* Dispatch to the appropriate handler function based on the Signal message code */
switch (SignalCommandHeader.Code)
{
case BT_SIGNAL_CONNECTION_REQUEST:
Bluetooth_Signal_ConnectionReq(&ACLPacketHeader, &DataHeader, &SignalCommandHeader);
Bluetooth_Signal_ConnectionReq(&SignalCommandHeader);
break;
case BT_SIGNAL_CONNECTION_RESPONSE:
Bluetooth_Signal_ConnectionResp(&ACLPacketHeader, &DataHeader, &SignalCommandHeader);
Bluetooth_Signal_ConnectionResp(&SignalCommandHeader);
break;
case BT_SIGNAL_CONFIGURATION_REQUEST:
Bluetooth_Signal_ConfigurationReq(&ACLPacketHeader, &DataHeader, &SignalCommandHeader);
Bluetooth_Signal_ConfigurationReq(&SignalCommandHeader);
break;
case BT_SIGNAL_CONFIGURATION_RESPONSE:
Bluetooth_Signal_ConfigurationResp(&ACLPacketHeader, &DataHeader, &SignalCommandHeader);
Bluetooth_Signal_ConfigurationResp(&SignalCommandHeader);
break;
case BT_SIGNAL_DISCONNECTION_REQUEST:
Bluetooth_Signal_DisconnectionReq(&ACLPacketHeader, &DataHeader, &SignalCommandHeader);
Bluetooth_Signal_DisconnectionReq(&SignalCommandHeader);
break;
case BT_SIGNAL_DISCONNECTION_RESPONSE:
Bluetooth_Signal_DisconnectionResp(&ACLPacketHeader, &DataHeader, &SignalCommandHeader);
Bluetooth_Signal_DisconnectionResp(&SignalCommandHeader);
break;
case BT_SIGNAL_ECHO_REQUEST:
Bluetooth_Signal_EchoReq(&ACLPacketHeader, &DataHeader, &SignalCommandHeader);
Bluetooth_Signal_EchoReq(&SignalCommandHeader);
break;
case BT_SIGNAL_INFORMATION_REQUEST:
Bluetooth_Signal_InformationReq(&ACLPacketHeader, &DataHeader, &SignalCommandHeader);
Bluetooth_Signal_InformationReq(&SignalCommandHeader);
break;
case BT_SIGNAL_COMMAND_REJECT:
BT_ACL_DEBUG(1, "<< Command Reject", NULL);
@@ -163,28 +181,39 @@ static void Bluetooth_ProcessACLPackets(void)
}
else
{
Bluetooth_PacketReceived(&DataHeader.PayloadLength, Bluetooth_GetChannelData(DataHeader.DestinationChannel, false));
Pipe_SelectPipe(BLUETOOTH_DATA_IN_PIPE);
Pipe_Discard_Stream(DataHeader.PayloadLength);
/* Non-signalling packet received, read in the packet contents and pass to the user application */
uint8_t PacketData[DataHeader.PayloadLength];
Pipe_Read_Stream_LE(PacketData, DataHeader.PayloadLength);
Pipe_ClearIN();
Pipe_Freeze();
Bluetooth_PacketReceived(PacketData, DataHeader.PayloadLength, Bluetooth_GetChannelData(DataHeader.DestinationChannel, false));
}
}
/** Sends a packet to the remote device on the specified channel.
*
* \param Data Pointer to a buffer where the data is to be sourced from
* \param DataLen Length of the data to send
* \param Channel Channel information structure containing the destination channel's information, NULL to send
* to the remote device's signalling channel
*
* \return A value from the \ref BT_SendPacket_ErrorCodes_t enum
*/
uint8_t Bluetooth_SendPacket(void* Data, uint16_t DataLen, Bluetooth_Channel_t* Channel)
{
BT_ACL_Header_t ACLPacketHeader;
BT_DataPacket_Header_t DataHeader;
/* A remote device must be connected before a packet transmission is attempted */
if (!(Bluetooth_Connection.IsConnected))
return BT_SENDPACKET_NotConnected;
/* If the destination channel is not the signalling channel and it is not currently fully open, abort */
if ((Channel != NULL) && (Channel->State != Channel_Open))
return BT_SENDPACKET_ChannelNotOpen;
// TODO: Add packet fragmentation here after retrieving the device's signal channel MTU
/* Fill out the packet's header from the remote device connection information structure */
ACLPacketHeader.ConnectionHandle = (Bluetooth_Connection.ConnectionHandle | BT_ACL_FIRST_AUTOFLUSH);
ACLPacketHeader.DataLength = sizeof(DataHeader) + DataLen;
DataHeader.PayloadLength = DataLen;
@@ -193,6 +222,7 @@ uint8_t Bluetooth_SendPacket(void* Data, uint16_t DataLen, Bluetooth_Channel_t*
Pipe_SelectPipe(BLUETOOTH_DATA_OUT_PIPE);
Pipe_Unfreeze();
/* Write the packet contents to the pipe so that it can be sent to the remote device */
Pipe_Write_Stream_LE(&ACLPacketHeader, sizeof(ACLPacketHeader));
Pipe_Write_Stream_LE(&DataHeader, sizeof(DataHeader));
Pipe_Write_Stream_LE(Data, DataLen);
@@ -210,23 +240,40 @@ uint8_t Bluetooth_SendPacket(void* Data, uint16_t DataLen, Bluetooth_Channel_t*
return BT_SENDPACKET_NoError;
}
/** Opens a bluetooth channel to the currently connected remote device, so that data can be exchanged.
*
* \note The channel is not immediately opened when this function returns - it must undergo a two way
* connection and configuration process first as the main Bluetooth stack processing task is
* repeatedly called. The returned channel is unusable by the user application until its State
* element has progressed to the Open state.
*
* \param PSM PSM of the service that the channel is to be opened for
*
* \return Pointer to the channel information structure of the opened channel, or NULL if no free channels
*/
Bluetooth_Channel_t* Bluetooth_OpenChannel(uint16_t PSM)
{
Bluetooth_Channel_t* ChannelData = NULL;
/* Search through the channel information list for a free channel item */
for (uint8_t i = 0; i < BLUETOOTH_MAX_OPEN_CHANNELS; i++)
{
if (Bluetooth_Connection.Channels[i].State == Channel_Closed)
{
ChannelData = &Bluetooth_Connection.Channels[i];
ChannelData = &Bluetooth_Connection.Channels[i];
/* Set the new channel structure's local channel number to a unique value within the connection orientated
channel address space */
ChannelData->LocalNumber = (BT_CHANNELNUMBER_BASEOFFSET + i);
break;
}
}
/* If no free channel item was found in the list, all channels are occupied - abort */
if (ChannelData == NULL)
return NULL;
/* Reset and fill out the allocated channel's information structure with defaults */
ChannelData->RemoteNumber = 0;
ChannelData->PSM = PSM;
ChannelData->LocalMTU = MAXIMUM_CHANNEL_MTU;
@@ -238,9 +285,12 @@ Bluetooth_Channel_t* Bluetooth_OpenChannel(uint16_t PSM)
BT_Signal_ConnectionReq_t ConnectionRequest;
} PacketData;
/* Fill out the Signal Command header in the response packet */
PacketData.SignalCommandHeader.Code = BT_SIGNAL_CONNECTION_REQUEST;
PacketData.SignalCommandHeader.Identifier = ++Bluetooth_Connection.SignallingIdentifier;
PacketData.SignalCommandHeader.Length = sizeof(PacketData.ConnectionRequest);
/* Fill out the Connection Request in the response packet */
PacketData.ConnectionRequest.PSM = PSM;
PacketData.ConnectionRequest.SourceChannel = ChannelData->LocalNumber;
@@ -253,11 +303,23 @@ Bluetooth_Channel_t* Bluetooth_OpenChannel(uint16_t PSM)
return ChannelData;
}
/** Closes a bluetooth channel that is open to the currently connected remote device, so that no further data
* can be exchanged.
*
* \note The channel is not immediately closed when this function returns - it must undergo an asynchronous
* disconnection process first as the main Bluetooth stack processing task is repeatedly called. The
* returned channel is unusable by the user application upon return however the channel is not completely
* closed until its State element has progressed to the Closed state.
*
* \param Channel Channel information structure of the channel to close
*/
void Bluetooth_CloseChannel(Bluetooth_Channel_t* Channel)
{
/* Don't try to close a non-existing or already closed channel */
if ((Channel == NULL) || (Channel->State == Channel_Closed))
return;
/* Set the channel's state to the start of the teardown process */
Channel->State = Channel_WaitDisconnect;
struct
@@ -266,9 +328,12 @@ void Bluetooth_CloseChannel(Bluetooth_Channel_t* Channel)
BT_Signal_DisconnectionReq_t DisconnectionRequest;
} PacketData;
/* Fill out the Signal Command header in the response packet */
PacketData.SignalCommandHeader.Code = BT_SIGNAL_DISCONNECTION_REQUEST;
PacketData.SignalCommandHeader.Identifier = ++Bluetooth_Connection.SignallingIdentifier;
PacketData.SignalCommandHeader.Length = sizeof(PacketData.DisconnectionRequest);
/* Fill out the Disconnection Request in the response packet */
PacketData.DisconnectionRequest.DestinationChannel = Channel->RemoteNumber;
PacketData.DisconnectionRequest.SourceChannel = Channel->LocalNumber;
@@ -279,9 +344,11 @@ void Bluetooth_CloseChannel(Bluetooth_Channel_t* Channel)
BT_ACL_DEBUG(2, "-- Source Channel: 0x%04X", PacketData.DisconnectionRequest.SourceChannel);
}
static inline void Bluetooth_Signal_ConnectionReq(BT_ACL_Header_t* ACLPacketHeader,
BT_DataPacket_Header_t* DataHeader,
BT_Signal_Header_t* SignalCommandHeader)
/** Internal Bluetooth stack Signal Command processing routine for a Connection Request command.
*
* \param SignalCommandHeader Pointer to the start of the received packet's Signal Command header
*/
static inline void Bluetooth_Signal_ConnectionReq(BT_Signal_Header_t* SignalCommandHeader)
{
BT_Signal_ConnectionReq_t ConnectionRequest;
@@ -294,21 +361,28 @@ static inline void Bluetooth_Signal_ConnectionReq(BT_ACL_Header_t* ACLPac
BT_ACL_DEBUG(2, "-- PSM: 0x%04X", ConnectionRequest.PSM);
BT_ACL_DEBUG(2, "-- Source Channel: 0x%04X", ConnectionRequest.SourceChannel);
/* Try to retrieve the existing channel's information structure if it exists */
Bluetooth_Channel_t* ChannelData = Bluetooth_GetChannelData(ConnectionRequest.SourceChannel, true);
/* If an existing channel item with the correct remote channel number was not found, find a free channel entry */
if (ChannelData == NULL)
{
/* Look through the channel information list for a free entry */
for (uint8_t i = 0; i < BLUETOOTH_MAX_OPEN_CHANNELS; i++)
{
if (Bluetooth_Connection.Channels[i].State == Channel_Closed)
{
ChannelData = &Bluetooth_Connection.Channels[i];
ChannelData = &Bluetooth_Connection.Channels[i];
/* Set the new channel structure's local channel number to a unique value within the connection orientated
channel address space */
ChannelData->LocalNumber = (BT_CHANNELNUMBER_BASEOFFSET + i);
break;
}
}
}
/* Reset the channel item contents only if a channel entry was found for it */
if (ChannelData != NULL)
{
ChannelData->RemoteNumber = ConnectionRequest.SourceChannel;
@@ -323,9 +397,12 @@ static inline void Bluetooth_Signal_ConnectionReq(BT_ACL_Header_t* ACLPac
BT_Signal_ConnectionResp_t ConnectionResponse;
} ResponsePacket;
/* Fill out the Signal Command header in the response packet */
ResponsePacket.SignalCommandHeader.Code = BT_SIGNAL_CONNECTION_RESPONSE;
ResponsePacket.SignalCommandHeader.Identifier = SignalCommandHeader->Identifier;
ResponsePacket.SignalCommandHeader.Length = sizeof(ResponsePacket.ConnectionResponse);
/* 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 :
@@ -340,9 +417,11 @@ static inline void Bluetooth_Signal_ConnectionReq(BT_ACL_Header_t* ACLPac
BT_ACL_DEBUG(2, "-- Source Channel: 0x%04X", ResponsePacket.ConnectionResponse.SourceChannel);
}
static inline void Bluetooth_Signal_ConnectionResp(BT_ACL_Header_t* ACLPacketHeader,
BT_DataPacket_Header_t* DataHeader,
BT_Signal_Header_t* SignalCommandHeader)
/** Internal Bluetooth stack Signal Command processing routine for a Connection Response command.
*
* \param SignalCommandHeader Pointer to the start of the received packet's Signal Command header
*/
static inline void Bluetooth_Signal_ConnectionResp(BT_Signal_Header_t* SignalCommandHeader)
{
BT_Signal_ConnectionResp_t ConnectionResponse;
@@ -356,22 +435,28 @@ static inline void Bluetooth_Signal_ConnectionResp(BT_ACL_Header_t* ACLPacketHea
BT_ACL_DEBUG(2, "-- Source Channel: 0x%04X", ConnectionResponse.SourceChannel);
BT_ACL_DEBUG(2, "-- Destination Channel: 0x%04X", ConnectionResponse.DestinationChannel);
/* Search for the referenced channel in the channel information list */
Bluetooth_Channel_t* ChannelData = Bluetooth_GetChannelData(ConnectionResponse.SourceChannel, false);
/* Only progress if the referenced channel data was found */
if (ChannelData != NULL)
{
/* Set the channel structure's remote channel number to the channel allocated on the remote device */
ChannelData->RemoteNumber = ConnectionResponse.SourceChannel;
ChannelData->State = (ConnectionResponse.Result == BT_CONNECTION_SUCCESSFUL) ?
Channel_Config_WaitConfig : Channel_Closed;
}
}
static inline void Bluetooth_Signal_ConfigurationReq(BT_ACL_Header_t* ACLPacketHeader,
BT_DataPacket_Header_t* DataHeader,
BT_Signal_Header_t* SignalCommandHeader)
/** Internal Bluetooth stack Signal Command processing routine for a Configuration Request command.
*
* \param SignalCommandHeader Pointer to the start of the received packet's Signal Command header
*/
static inline void Bluetooth_Signal_ConfigurationReq(BT_Signal_Header_t* SignalCommandHeader)
{
BT_Signal_ConfigurationReq_t ConfigurationRequest;
/* Allocate a buffer large enough to hold the variable number of configuration options in the request */
uint8_t OptionsLen = (SignalCommandHeader->Length - sizeof(ConfigurationRequest));
uint8_t Options[OptionsLen];
@@ -381,6 +466,7 @@ static inline void Bluetooth_Signal_ConfigurationReq(BT_ACL_Header_t* ACL
Pipe_ClearIN();
Pipe_Freeze();
/* Search for the referenced channel in the channel information list */
Bluetooth_Channel_t* ChannelData = Bluetooth_GetChannelData(ConfigurationRequest.DestinationChannel, false);
BT_ACL_DEBUG(1, "<< L2CAP Configuration Request", NULL);
@@ -388,18 +474,26 @@ static inline void Bluetooth_Signal_ConfigurationReq(BT_ACL_Header_t* ACL
BT_ACL_DEBUG(2, "-- Remote MTU: 0x%04X", ChannelData->RemoteMTU);
BT_ACL_DEBUG(2, "-- Options Len: 0x%04X", OptionsLen);
uint8_t OptionPos = 0;
while (OptionPos < OptionsLen)
/* Only look at the channel configuration options if a valid channel entry for the local channel number was found */
if (ChannelData != NULL)
{
BT_Config_Option_Header_t* OptionHeader = (BT_Config_Option_Header_t*)&Options[OptionPos];
/* Iterate through each option in the configuration request to look for ones which can be processed */
uint8_t OptionPos = 0;
while (OptionPos < OptionsLen)
{
BT_Config_Option_Header_t* OptionHeader = (BT_Config_Option_Header_t*)&Options[OptionPos];
void* OptionData = &Options[OptionPos + sizeof(*OptionHeader)];
BT_ACL_DEBUG(2, "-- Option Type: 0x%04X", OptionHeader->Type);
BT_ACL_DEBUG(2, "-- Option Length: 0x%04X", (sizeof(*OptionHeader) + OptionHeader->Length));
if ((OptionHeader->Type == BT_CONFIG_OPTION_MTU) && (ChannelData != NULL))
ChannelData->RemoteMTU = *((uint16_t*)&Options[OptionPos + sizeof(*OptionHeader)]);
BT_ACL_DEBUG(2, "-- Option Type: 0x%04X", OptionHeader->Type);
BT_ACL_DEBUG(2, "-- Option Length: 0x%04X", (sizeof(*OptionHeader) + OptionHeader->Length));
/* Store the remote MTU option's value if present */
if (OptionHeader->Type == BT_CONFIG_OPTION_MTU)
ChannelData->RemoteMTU = *((uint16_t*)OptionData);
OptionPos += (sizeof(*OptionHeader) + OptionHeader->Length);
/* Progress to the next option in the packet */
OptionPos += (sizeof(*OptionHeader) + OptionHeader->Length);
}
}
struct
@@ -408,9 +502,12 @@ static inline void Bluetooth_Signal_ConfigurationReq(BT_ACL_Header_t* ACL
BT_Signal_ConfigurationResp_t ConfigurationResponse;
} ResponsePacket;
/* Fill out the Signal Command header in the response packet */
ResponsePacket.SignalCommandHeader.Code = BT_SIGNAL_CONFIGURATION_RESPONSE;
ResponsePacket.SignalCommandHeader.Identifier = SignalCommandHeader->Identifier;
ResponsePacket.SignalCommandHeader.Length = sizeof(ResponsePacket.ConfigurationResponse);
/* Fill out the Configuration Response in the response packet */
ResponsePacket.ConfigurationResponse.SourceChannel = ChannelData->RemoteNumber;
ResponsePacket.ConfigurationResponse.Flags = 0x00;
ResponsePacket.ConfigurationResponse.Result = (ChannelData != NULL) ? BT_CONFIGURATION_SUCCESSFUL : BT_CONFIGURATION_REJECTED;
@@ -438,9 +535,11 @@ static inline void Bluetooth_Signal_ConfigurationReq(BT_ACL_Header_t* ACL
BT_ACL_DEBUG(2, "-- Result: 0x%02X", ResponsePacket.ConfigurationResponse.Result);
}
static inline void Bluetooth_Signal_ConfigurationResp(BT_ACL_Header_t* ACLPacketHeader,
BT_DataPacket_Header_t* DataHeader,
BT_Signal_Header_t* SignalCommandHeader)
/** Internal Bluetooth stack Signal Command processing routine for a Configuration Response command.
*
* \param SignalCommandHeader Pointer to the start of the received packet's Signal Command header
*/
static inline void Bluetooth_Signal_ConfigurationResp(BT_Signal_Header_t* SignalCommandHeader)
{
BT_Signal_ConfigurationResp_t ConfigurationResponse;
@@ -453,11 +552,14 @@ static inline void Bluetooth_Signal_ConfigurationResp(BT_ACL_Header_t* AC
BT_ACL_DEBUG(2, "-- Source Channel: 0x%04X", ConfigurationResponse.SourceChannel);
BT_ACL_DEBUG(2, "-- Result: 0x%02X", ConfigurationResponse.Result);
if (ConfigurationResponse.Result == BT_CONFIGURATION_SUCCESSFUL)
/* Search for the referenced channel in the channel information list */
Bluetooth_Channel_t* ChannelData = Bluetooth_GetChannelData(ConfigurationResponse.SourceChannel, true);
/* Only update the channel's state if it was found in the channel list */
if (ChannelData != NULL)
{
Bluetooth_Channel_t* ChannelData = Bluetooth_GetChannelData(ConfigurationResponse.SourceChannel, true);
if (ChannelData != NULL)
/* Check if the channel configuration completed successfuly */
if (ConfigurationResponse.Result == BT_CONFIGURATION_SUCCESSFUL)
{
switch (ChannelData->State)
{
@@ -467,14 +569,21 @@ static inline void Bluetooth_Signal_ConfigurationResp(BT_ACL_Header_t* AC
case Channel_Config_WaitResp:
ChannelData->State = Channel_Open;
break;
}
}
}
}
else
{
/* Configuration failed - close the channel */
ChannelData->State = Channel_Closed;
}
}
}
static inline void Bluetooth_Signal_DisconnectionReq(BT_ACL_Header_t* ACLPacketHeader,
BT_DataPacket_Header_t* DataHeader,
BT_Signal_Header_t* SignalCommandHeader)
/** Internal Bluetooth stack Signal Command processing routine for a Disconnection Request command.
*
* \param SignalCommandHeader Pointer to the start of the received packet's Signal Command header
*/
static inline void Bluetooth_Signal_DisconnectionReq(BT_Signal_Header_t* SignalCommandHeader)
{
BT_Signal_DisconnectionReq_t DisconnectionRequest;
@@ -487,6 +596,7 @@ static inline void Bluetooth_Signal_DisconnectionReq(BT_ACL_Header_t* ACL
Pipe_ClearIN();
Pipe_Freeze();
/* Search for the referenced channel in the channel information list */
Bluetooth_Channel_t* ChannelData = Bluetooth_GetChannelData(DisconnectionRequest.SourceChannel, true);
struct
@@ -495,14 +605,18 @@ static inline void Bluetooth_Signal_DisconnectionReq(BT_ACL_Header_t* ACL
BT_Signal_DisconnectionResp_t DisconnectionResponse;
} ResponsePacket;
/* Fill out the Signal Command header in the response packet */
ResponsePacket.SignalCommandHeader.Code = BT_SIGNAL_DISCONNECTION_RESPONSE;
ResponsePacket.SignalCommandHeader.Identifier = SignalCommandHeader->Identifier;
ResponsePacket.SignalCommandHeader.Length = sizeof(ResponsePacket.DisconnectionResponse);
/* Fill out the Disconnection Response in the response packet */
ResponsePacket.DisconnectionResponse.DestinationChannel = ChannelData->RemoteNumber;
ResponsePacket.DisconnectionResponse.SourceChannel = ChannelData->LocalNumber;
Bluetooth_SendPacket(&ResponsePacket, sizeof(ResponsePacket), NULL);
/* If the channel was found in the channel list, close it */
if (ChannelData != NULL)
ChannelData->State = Channel_Closed;
@@ -511,9 +625,11 @@ static inline void Bluetooth_Signal_DisconnectionReq(BT_ACL_Header_t* ACL
BT_ACL_DEBUG(2, "-- Destination Channel: 0x%04X", ResponsePacket.DisconnectionResponse.DestinationChannel);
}
static inline void Bluetooth_Signal_DisconnectionResp(BT_ACL_Header_t* ACLPacketHeader,
BT_DataPacket_Header_t* DataHeader,
BT_Signal_Header_t* SignalCommandHeader)
/** Internal Bluetooth stack Signal Command processing routine for a Disconnection Response command.
*
* \param SignalCommandHeader Pointer to the start of the received packet's Signal Command header
*/
static inline void Bluetooth_Signal_DisconnectionResp(BT_Signal_Header_t* SignalCommandHeader)
{
BT_Signal_DisconnectionResp_t DisconnectionResponse;
@@ -526,15 +642,19 @@ static inline void Bluetooth_Signal_DisconnectionResp(BT_ACL_Header_t* AC
Pipe_ClearIN();
Pipe_Freeze();
/* Search for the referenced channel in the channel information list */
Bluetooth_Channel_t* ChannelData = Bluetooth_GetChannelData(DisconnectionResponse.SourceChannel, true);
if (ChannelData->State == Channel_WaitDisconnect)
/* If the channel was found in the channel list, close it */
if (ChannelData != NULL)
ChannelData->State = Channel_Closed;
}
static inline void Bluetooth_Signal_EchoReq(BT_ACL_Header_t* ACLPacketHeader,
BT_DataPacket_Header_t* DataHeader,
BT_Signal_Header_t* SignalCommandHeader)
/** Internal Bluetooth stack Signal Command processing routine for an Echo Request command.
*
* \param SignalCommandHeader Pointer to the start of the received packet's Signal Command header
*/
static inline void Bluetooth_Signal_EchoReq(BT_Signal_Header_t* SignalCommandHeader)
{
BT_ACL_DEBUG(1, "<< L2CAP Echo Request", NULL);
@@ -546,6 +666,7 @@ static inline void Bluetooth_Signal_EchoReq(BT_ACL_Header_t* ACLPacketHeader,
BT_Signal_Header_t SignalCommandHeader;
} ResponsePacket;
/* Fill out the Signal Command header in the response packet */
ResponsePacket.SignalCommandHeader.Code = BT_SIGNAL_ECHO_RESPONSE;
ResponsePacket.SignalCommandHeader.Identifier = SignalCommandHeader->Identifier;
ResponsePacket.SignalCommandHeader.Length = 0;
@@ -555,9 +676,11 @@ static inline void Bluetooth_Signal_EchoReq(BT_ACL_Header_t* ACLPacketHeader,
BT_ACL_DEBUG(1, ">> L2CAP Echo Response", NULL);
}
static inline void Bluetooth_Signal_InformationReq(BT_ACL_Header_t* ACLPacketHeader,
BT_DataPacket_Header_t* DataHeader,
BT_Signal_Header_t* SignalCommandHeader)
/** Internal Bluetooth stack Signal Command processing routine for an Information Request command.
*
* \param SignalCommandHeader Pointer to the start of the received packet's Signal Command header
*/
static inline void Bluetooth_Signal_InformationReq(BT_Signal_Header_t* SignalCommandHeader)
{
BT_Signal_InformationReq_t InformationRequest;
@@ -579,6 +702,7 @@ static inline void Bluetooth_Signal_InformationReq(BT_ACL_Header_t* ACLPa
uint8_t DataLen = 0;
/* Retrieve the requested information and store it in the outgoing packet, if found */
switch (InformationRequest.InfoType)
{
case BT_INFOREQ_MTU:
@@ -599,10 +723,14 @@ static inline void Bluetooth_Signal_InformationReq(BT_ACL_Header_t* ACLPa
break;
}
/* Fill out the Signal Command header in the response packet */
ResponsePacket.SignalCommandHeader.Code = BT_SIGNAL_INFORMATION_RESPONSE;
ResponsePacket.SignalCommandHeader.Identifier = SignalCommandHeader->Identifier;
ResponsePacket.SignalCommandHeader.Length = sizeof(ResponsePacket.InformationResponse) + DataLen;
/* Fill out the Information Response in the response packet */
ResponsePacket.InformationResponse.InfoType = InformationRequest.InfoType;
Bluetooth_SendPacket(&ResponsePacket, (sizeof(ResponsePacket) - sizeof(ResponsePacket.Data) + DataLen), NULL);
BT_ACL_DEBUG(1, ">> L2CAP Information Response", NULL);
Demos/Host/Incomplete/BluetoothHost/Lib/BluetoothACLPackets.h
+12 -26
View File
@@ -35,14 +35,16 @@
#include <avr/io.h>
#include <string.h>
#include <stdbool.h>
#include <stdio.h>
#include <LUFA/Drivers/USB/USB.h>
#include <LUFA/Drivers/Peripheral/SerialStream.h>
#include "BluetoothStack.h"
/* Macros: */
#define BT_ACL_DEBUG(l, s, ...) do { if (ACL_DEBUG_LEVEL >= l) printf_P(PSTR("(ACL) " s "\r\n"), __VA_ARGS__); } while (0)
#define ACL_DEBUG_LEVEL 2
#define ACL_DEBUG_LEVEL 0
#define BT_CHANNELNUMBER_BASEOFFSET 0x0040
@@ -158,32 +160,16 @@
void Bluetooth_ACLTask(void);
#if defined(INCLUDE_FROM_BLUETOOTH_ACLPACKETS_C)
static void Bluetooth_ProcessACLPackets(void);
static void Bluetooth_ProcessIncommingACLPackets(void);
static inline void Bluetooth_Signal_ConnectionReq(BT_ACL_Header_t* ACLPacketHeader,
BT_DataPacket_Header_t* DataHeader,
BT_Signal_Header_t* SignalCommandHeader);
static inline void Bluetooth_Signal_ConnectionResp(BT_ACL_Header_t* ACLPacketHeader,
BT_DataPacket_Header_t* DataHeader,
BT_Signal_Header_t* SignalCommandHeader);
static inline void Bluetooth_Signal_EchoReq(BT_ACL_Header_t* ACLPacketHeader,
BT_DataPacket_Header_t* DataHeader,
BT_Signal_Header_t* SignalCommandHeader);
static inline void Bluetooth_Signal_ConfigurationReq(BT_ACL_Header_t* ACLPacketHeader,
BT_DataPacket_Header_t* DataHeader,
BT_Signal_Header_t* SignalCommandHeader);
static inline void Bluetooth_Signal_ConfigurationResp(BT_ACL_Header_t* ACLPacketHeader,
BT_DataPacket_Header_t* DataHeader,
BT_Signal_Header_t* SignalCommandHeader);
static inline void Bluetooth_Signal_DisconnectionReq(BT_ACL_Header_t* ACLPacketHeader,
BT_DataPacket_Header_t* DataHeader,
BT_Signal_Header_t* SignalCommandHeader);
static inline void Bluetooth_Signal_DisconnectionResp(BT_ACL_Header_t* ACLPacketHeader,
BT_DataPacket_Header_t* DataHeader,
BT_Signal_Header_t* SignalCommandHeader);
static inline void Bluetooth_Signal_InformationReq(BT_ACL_Header_t* ACLPacketHeader,
BT_DataPacket_Header_t* DataHeader,
BT_Signal_Header_t* SignalCommandHeader);
static inline void Bluetooth_Signal_ConnectionReq(BT_Signal_Header_t* SignalCommandHeader);
static inline void Bluetooth_Signal_ConnectionResp(BT_Signal_Header_t* SignalCommandHeader);
static inline void Bluetooth_Signal_ConfigurationReq(BT_Signal_Header_t* SignalCommandHeader);
static inline void Bluetooth_Signal_ConfigurationResp(BT_Signal_Header_t* SignalCommandHeader);
static inline void Bluetooth_Signal_DisconnectionReq(BT_Signal_Header_t* SignalCommandHeader);
static inline void Bluetooth_Signal_DisconnectionResp(BT_Signal_Header_t* SignalCommandHeader);
static inline void Bluetooth_Signal_EchoReq(BT_Signal_Header_t* SignalCommandHeader);
static inline void Bluetooth_Signal_InformationReq(BT_Signal_Header_t* SignalCommandHeader);
#endif
#endif
Demos/Host/Incomplete/BluetoothHost/Lib/BluetoothHCICommands.h
+3 -1
View File
@@ -35,15 +35,17 @@
#include <avr/io.h>
#include <string.h>
#include <stdbool.h>
#include <stdio.h>
#include <LUFA/Drivers/USB/USB.h>
#include <LUFA/Drivers/Peripheral/SerialStream.h>
#include "BluetoothStack.h"
#include "BluetoothClassCodes.h"
/* Macros: */
#define BT_HCI_DEBUG(l, s, ...) do { if (HCI_DEBUG_LEVEL >= l) printf_P(PSTR("(HCI) " s "\r\n"), __VA_ARGS__); } while (0)
#define HCI_DEBUG_LEVEL 1
#define HCI_DEBUG_LEVEL 0
#define OGF_LINK_CONTROL 0x01
#define OGF_CTRLR_BASEBAND 0x03
Demos/Host/Incomplete/BluetoothHost/Lib/BluetoothStack.h
+25 -25
View File
@@ -34,26 +34,24 @@
/* Includes: */
#include <LUFA/Drivers/USB/USB.h>
#include "BluetoothHost.h"
/* Macros: */
#define BLUETOOTH_DATA_IN_PIPE 1
#define BLUETOOTH_DATA_OUT_PIPE 2
#define BLUETOOTH_EVENTS_PIPE 3
#define BLUETOOTH_DATA_IN_PIPE 1
#define BLUETOOTH_DATA_OUT_PIPE 2
#define BLUETOOTH_EVENTS_PIPE 3
#define BLUETOOTH_MAX_OPEN_CHANNELS 6
#define BLUETOOTH_MAX_OPEN_CHANNELS 6
#define CHANNEL_PSM_SERVICEDISCOVERY 0x0001
#define CHANNEL_PSM_UDP 0x0002
#define CHANNEL_PSM_RFCOMM 0x0003
#define CHANNEL_PSM_TCP 0x0004
#define CHANNEL_PSM_IP 0x0009
#define CHANNEL_PSM_FTP 0x000A
#define CHANNEL_PSM_HTTP 0x000C
#define CHANNEL_PSM_UPNP 0x0010
#define CHANNEL_PSM_HIDP 0x0011
#define CHANNEL_PSM_SDP 0x0001
#define CHANNEL_PSM_UDP 0x0002
#define CHANNEL_PSM_RFCOMM 0x0003
#define CHANNEL_PSM_TCP 0x0004
#define CHANNEL_PSM_IP 0x0009
#define CHANNEL_PSM_FTP 0x000A
#define CHANNEL_PSM_HTTP 0x000C
#define CHANNEL_PSM_UPNP 0x0010
#define CHANNEL_PSM_HIDP 0x0011
#define MAXIMUM_CHANNEL_MTU 255
#define MAXIMUM_CHANNEL_MTU 255
/* Enums: */
/** Enum for the possible states for a bluetooth ACL channel. */
@@ -101,19 +99,21 @@
*/
typedef struct
{
bool IsConnected;
uint16_t ConnectionHandle;
uint8_t RemoteAddress[6];
Bluetooth_Channel_t Channels[BLUETOOTH_MAX_OPEN_CHANNELS];
uint8_t SignallingIdentifier;
bool IsConnected; /**< Indicates if the stack is currently connected to a remote device - if this value is
* false, the remaining elements are invalid.
*/
uint16_t ConnectionHandle; /**< Connection handle to the remote device, used internally in the stack. */
uint8_t RemoteAddress[6]; /**< Bluetooth device address of the attached remote device. */
Bluetooth_Channel_t Channels[BLUETOOTH_MAX_OPEN_CHANNELS]; /**< Channel information structures for the connection. */
uint8_t SignallingIdentifier; /**< Next Signalling Channel unique command sequence identifier. */
} Bluetooth_Connection_t;
/** Local Bluetooth device information structure, for the defining of local device characteristics for the Bluetooth stack. */
typedef struct
{
uint32_t Class;
char PINCode[16];
char Name[];
uint32_t Class; /**< Class of the local device, a mask of DEVICE_CLASS_* masks. */
char PINCode[16]; /**< Pin code required to send or receive in order to authenticate with a remote device. */
char Name[]; /**< Name of the local bluetooth device, up to 248 characters. */
} Bluetooth_Device_t;
/* Includes: */
@@ -127,7 +127,7 @@
bool Bluetooth_ConnectionRequest(uint8_t* RemoteAddress);
void Bluetooth_ConnectionComplete(void);
void Bluetooth_DisconnectionComplete(void);
void Bluetooth_PacketReceived(uint16_t* PacketLength, Bluetooth_Channel_t* Channel);
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);
void Bluetooth_CloseChannel(Bluetooth_Channel_t* Channel);
Demos/Host/Incomplete/BluetoothHost/Lib/ServiceDiscoveryProtocol.c
+41
View File
@@ -0,0 +1,41 @@
/*
LUFA Library
Copyright (C) Dean Camera, 2010.
dean [at] fourwalledcubicle [dot] com
www.fourwalledcubicle.com
*/
/*
Copyright 2010 Dean Camera (dean [at] fourwalledcubicle [dot] com)
Permission to use, copy, modify, distribute, and sell this
software and its documentation for any purpose is hereby granted
without fee, provided that the above copyright notice appear in
all copies and that both that the copyright notice and this
permission notice and warranty disclaimer appear in supporting
documentation, and that the name of the author not be used in
advertising or publicity pertaining to distribution of the
software without specific, written prior permission.
The author disclaim all warranties with regard to this
software, including all implied warranties of merchantability
and fitness. In no event shall the author be liable for any
special, indirect or consequential damages or any damages
whatsoever resulting from loss of use, data or profits, whether
in an action of contract, negligence or other tortious action,
arising out of or in connection with the use or performance of
this software.
*/
#include "ServiceDiscoveryProtocol.h"
void ServiceDiscovery_ProcessPacket(void* Data, uint16_t Length, Bluetooth_Channel_t* Channel)
{
SDP_PDUHeader_t* SDPHeader = (SDP_PDUHeader_t*)Data;
SDPHeader->ParameterLength = SwapEndian_16(SDPHeader->ParameterLength);
BT_SDP_DEBUG(1, "<< Service Discovery Packet", NULL);
BT_SDP_DEBUG(2, "-- PDU ID: 0x%02X", SDPHeader->PDU);
BT_SDP_DEBUG(2, "-- Param Length: 0x%04X", SDPHeader->ParameterLength);
}
Demos/Host/Incomplete/BluetoothHost/Lib/ServiceDiscoveryProtocol.h
+68
View File
@@ -0,0 +1,68 @@
/*
LUFA Library
Copyright (C) Dean Camera, 2010.
dean [at] fourwalledcubicle [dot] com
www.fourwalledcubicle.com
*/
/*
Copyright 2010 Dean Camera (dean [at] fourwalledcubicle [dot] com)
Permission to use, copy, modify, distribute, and sell this
software and its documentation for any purpose is hereby granted
without fee, provided that the above copyright notice appear in
all copies and that both that the copyright notice and this
permission notice and warranty disclaimer appear in supporting
documentation, and that the name of the author not be used in
advertising or publicity pertaining to distribution of the
software without specific, written prior permission.
The author disclaim all warranties with regard to this
software, including all implied warranties of merchantability
and fitness. In no event shall the author be liable for any
special, indirect or consequential damages or any damages
whatsoever resulting from loss of use, data or profits, whether
in an action of contract, negligence or other tortious action,
arising out of or in connection with the use or performance of
this software.
*/
#ifndef _SERVICEDISCOVERYPROTOCOL_H_
#define _SERVICEDISCOVERYPROTOCOL_H_
/* Includes: */
#include <avr/io.h>
#include <string.h>
#include <stdbool.h>
#include <stdio.h>
#include <LUFA/Common/Common.h>
#include <LUFA/Drivers/Peripheral/SerialStream.h>
#include "BluetoothStack.h"
/* 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 2
#define SDP_PDU_ERRORRESPONSE 0x01
#define SDP_PDU_SERVICESEARCHREQUEST 0x02
#define SDP_PDU_SERVICESEARCHRESPONSE 0x03
#define SDP_PDU_SERVICEATTRIBUTEREQUEST 0x04
#define SDP_PDU_SERVICEATTRIBUTERESPONSE 0x05
#define SDP_PDU_SERVICESEARCHATTRIBUTEREQUEST 0x06
#define SDP_PDU_SERVICESEARCHATTRIBUTERESPONSE 0x07
/* Type Defines: */
typedef struct
{
uint8_t PDU;
uint16_t TransactionID;
uint16_t ParameterLength;
} SDP_PDUHeader_t;
/* Function Prototypes: */
void ServiceDiscovery_ProcessPacket(void* Data, uint16_t Length, Bluetooth_Channel_t* Channel);
#endif