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Demos/Host/Incomplete/BluetoothHost/Lib/RFCOMMControl.c
View file @ 1167b699
/*
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.
*/
/** \file
*
* RFCOMM multiplexer control layer module. This module handles multiplexer
* channel commands to the control DLCI in the RFCOMM layer, to open, configure,
* test and close logical RFCOMM channels.
*/
#define INCLUDE_FROM_RFCOMM_CONTROL_C
#include "RFCOMMControl.h"
void RFCOMM_ProcessControlCommand(const uint8_t* Command, Bluetooth_Channel_t* const ACLChannel)
{
const RFCOMM_Command_t* CommandHeader = (const RFCOMM_Command_t*)Command;
const uint8_t* CommandData = (const uint8_t*)Command + sizeof(RFCOMM_Command_t);
uint8_t CommandDataLen = RFCOMM_GetVariableFieldValue(&CommandData);
switch (CommandHeader->Command)
{
case RFCOMM_Control_Test:
RFCOMM_ProcessTestCommand(CommandHeader, CommandDataLen, CommandData, ACLChannel);
break;
case RFCOMM_Control_FlowControlEnable:
RFCOMM_ProcessFCECommand(CommandHeader, CommandData, ACLChannel);
break;
case RFCOMM_Control_FlowControlDisable:
RFCOMM_ProcessFCDCommand(CommandHeader, CommandData, ACLChannel);
break;
case RFCOMM_Control_ModemStatus:
RFCOMM_ProcessMSCCommand(CommandHeader, CommandDataLen, CommandData, ACLChannel);
break;
case RFCOMM_Control_RemotePortNegotiation:
RFCOMM_ProcessRPNCommand(CommandHeader, CommandData, ACLChannel);
break;
case RFCOMM_Control_RemoteLineStatus:
RFCOMM_ProcessRLSCommand(CommandHeader, CommandData, ACLChannel);
break;
case RFCOMM_Control_DLCParameterNegotiation:
RFCOMM_ProcessDPNCommand(CommandHeader, CommandData, ACLChannel);
break;
default:
BT_RFCOMM_DEBUG(1, "<< Unknown Command");
break;
}
}
static void RFCOMM_ProcessTestCommand(const RFCOMM_Command_t* const CommandHeader, const uint8_t CommandDataLen,
const uint8_t* CommandData, Bluetooth_Channel_t* const ACLChannel)
{
const uint8_t* Params = (const uint8_t*)CommandData;
BT_RFCOMM_DEBUG(1, "<< TEST Command");
struct
{
RFCOMM_Command_t CommandHeader;
uint8_t Length;
uint8_t TestData[CommandDataLen];
} TestResponse;
/* Fill out the Test response data */
TestResponse.CommandHeader = (RFCOMM_Command_t){.Command = RFCOMM_Control_Test, .EA = true, .CR = false};
TestResponse.Length = (CommandDataLen << 1) | 0x01;
memcpy(TestResponse.TestData, Params, CommandDataLen);
BT_RFCOMM_DEBUG(1, ">> TEST Response");
/* Send the PDN response to acknowledge the command */
RFCOMM_SendFrame(RFCOMM_CONTROL_DLCI, false, RFCOMM_Frame_UIH, sizeof(TestResponse), &TestResponse, ACLChannel);
}
static void RFCOMM_ProcessFCECommand(const RFCOMM_Command_t* const CommandHeader, const uint8_t* CommandData,
Bluetooth_Channel_t* const ACLChannel)
{
BT_RFCOMM_DEBUG(1, "<< FCE Command");
}
static void RFCOMM_ProcessFCDCommand(const RFCOMM_Command_t* const CommandHeader, const uint8_t* CommandData,
Bluetooth_Channel_t* const ACLChannel)
{
BT_RFCOMM_DEBUG(1, "<< FCD Command");
}
static void RFCOMM_ProcessMSCCommand(const RFCOMM_Command_t* const CommandHeader, const uint8_t CommandDataLen,
const uint8_t* CommandData, Bluetooth_Channel_t* const ACLChannel)
{
const RFCOMM_MSC_Parameters_t* Params = (const RFCOMM_MSC_Parameters_t*)CommandData;
BT_RFCOMM_DEBUG(1, "<< MSC %s", (CommandHeader->CR) ? "Command" : "Response");
BT_RFCOMM_DEBUG(2, "-- DLCI: 0x%02X", Params->Channel.DLCI);
/* Ignore status flags sent to the control channel */
if (Params->Channel.DLCI == RFCOMM_CONTROL_DLCI)
return;
/* Retrieve existing channel configuration data, if already opened */
RFCOMM_Channel_t* RFCOMMChannel = RFCOMM_GetChannelData(Params->Channel.DLCI);
/* If the channel does not exist, abort */
if (RFCOMMChannel == NULL)
return;
/* Check if the MSC packet is a command or a response */
if (CommandHeader->CR)
{
/* Save the new channel signals to the channel state structure */
RFCOMMChannel->Remote.Signals = Params->Signals;
RFCOMMChannel->ConfigFlags |= RFCOMM_CONFIG_REMOTESIGNALS;
/* If the command contains the optional break signals field, store the value */
if (CommandDataLen == sizeof(RFCOMM_MSC_Parameters_t))
RFCOMMChannel->Remote.BreakSignal = Params->BreakSignal;
/* Notify the user application that the signals have been received */
RFCOMM_ChannelSignalsReceived(RFCOMMChannel);
struct
{
RFCOMM_Command_t CommandHeader;
uint8_t Length;
RFCOMM_MSC_Parameters_t Params;
} MSResponse;
/* Fill out the MS response data */
MSResponse.CommandHeader = (RFCOMM_Command_t){.Command = RFCOMM_Control_ModemStatus, .EA = true, .CR = false};
MSResponse.Length = (CommandDataLen << 1) | 0x01;
memcpy(&MSResponse.Params, Params, sizeof(RFCOMM_MSC_Parameters_t));
BT_RFCOMM_DEBUG(1, ">> MSC Response");
/* Send the MSC response to acknowledge the command */
RFCOMM_SendFrame(RFCOMM_CONTROL_DLCI, false, RFCOMM_Frame_UIH,
(sizeof(MSResponse) - sizeof(MSResponse.Params) + CommandDataLen), &MSResponse, ACLChannel);
}
else
{
/* Indicate that the remote device has acknowledged the sent signals */
RFCOMMChannel->ConfigFlags |= RFCOMM_CONFIG_LOCALSIGNALS;
}
}
static void RFCOMM_ProcessRPNCommand(const RFCOMM_Command_t* const CommandHeader, const uint8_t* CommandData,
Bluetooth_Channel_t* const ACLChannel)
{
BT_RFCOMM_DEBUG(1, "<< RPN Command");
}
static void RFCOMM_ProcessRLSCommand(const RFCOMM_Command_t* const CommandHeader, const uint8_t* CommandData,
Bluetooth_Channel_t* const ACLChannel)
{
BT_RFCOMM_DEBUG(1, "<< RLS Command");
}
static void RFCOMM_ProcessDPNCommand(const RFCOMM_Command_t* const CommandHeader, const uint8_t* CommandData,
Bluetooth_Channel_t* const ACLChannel)
{
const RFCOMM_DPN_Parameters_t* Params = (const RFCOMM_DPN_Parameters_t*)CommandData;
BT_RFCOMM_DEBUG(1, "<< DPN Command");
BT_RFCOMM_DEBUG(2, "-- DLCI: 0x%02X", Params->DLCI);
/* Ignore parameter negotiations to the control channel */
if (Params->DLCI == RFCOMM_CONTROL_DLCI)
return;
/* Retrieve existing channel configuration data, if already opened */
RFCOMM_Channel_t* RFCOMMChannel = RFCOMM_GetChannelData(Params->DLCI);
/* Check if the channel has no corresponding entry - remote did not open it first */
if (RFCOMMChannel == NULL)
{
/* Create a new entry in the channel table for the new channel */
RFCOMMChannel = RFCOMM_GetFreeChannelEntry(Params->DLCI);
/* No free entry was found, discard the request */
if (RFCOMMChannel == NULL)
{
BT_RFCOMM_DEBUG(2, "-- No Free Channel");
return;
}
}
/* Save the new channel configuration */
RFCOMMChannel->State = RFCOMM_Channel_Configure;
RFCOMMChannel->Priority = Params->Priority;
RFCOMMChannel->MTU = Params->MaximumFrameSize;
struct
{
RFCOMM_Command_t CommandHeader;
uint8_t Length;
RFCOMM_DPN_Parameters_t Params;
} DPNResponse;
/* Fill out the DPN response data */
DPNResponse.CommandHeader = (RFCOMM_Command_t){.Command = RFCOMM_Control_DLCParameterNegotiation, .EA = true, .CR = false};
DPNResponse.Length = (sizeof(DPNResponse.Params) << 1) | 0x01;
memcpy(&DPNResponse.Params, Params, sizeof(RFCOMM_DPN_Parameters_t));
DPNResponse.Params.ConvergenceLayer = 0x00; // TODO: Enable credit based transaction support
BT_RFCOMM_DEBUG(1, ">> DPN Response");
/* Send the DPN response to acknowledge the command */
RFCOMM_SendFrame(RFCOMM_CONTROL_DLCI, false, RFCOMM_Frame_UIH, sizeof(DPNResponse), &DPNResponse, ACLChannel);
}
/*
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.
*/
/** \file
*
* RFCOMM multiplexer control layer module. This module handles multiplexer
* channel commands to the control DLCI in the RFCOMM layer, to open, configure,
* test and close logical RFCOMM channels.
*/
#define INCLUDE_FROM_RFCOMM_CONTROL_C
#include "RFCOMMControl.h"
void RFCOMM_ProcessControlCommand(const uint8_t* Command, Bluetooth_Channel_t* const ACLChannel)
{
const RFCOMM_Command_t* CommandHeader = (const RFCOMM_Command_t*)Command;
const uint8_t* CommandData = (const uint8_t*)Command + sizeof(RFCOMM_Command_t);
uint8_t CommandDataLen = RFCOMM_GetVariableFieldValue(&CommandData);
switch (CommandHeader->Command)
{
case RFCOMM_Control_Test:
RFCOMM_ProcessTestCommand(CommandHeader, CommandDataLen, CommandData, ACLChannel);
break;
case RFCOMM_Control_FlowControlEnable:
RFCOMM_ProcessFCECommand(CommandHeader, CommandData, ACLChannel);
break;
case RFCOMM_Control_FlowControlDisable:
RFCOMM_ProcessFCDCommand(CommandHeader, CommandData, ACLChannel);
break;
case RFCOMM_Control_ModemStatus:
RFCOMM_ProcessMSCCommand(CommandHeader, CommandDataLen, CommandData, ACLChannel);
break;
case RFCOMM_Control_RemotePortNegotiation:
RFCOMM_ProcessRPNCommand(CommandHeader, CommandData, ACLChannel);
break;
case RFCOMM_Control_RemoteLineStatus:
RFCOMM_ProcessRLSCommand(CommandHeader, CommandData, ACLChannel);
break;
case RFCOMM_Control_DLCParameterNegotiation:
RFCOMM_ProcessDPNCommand(CommandHeader, CommandData, ACLChannel);
break;
default:
BT_RFCOMM_DEBUG(1, "<< Unknown Command");
break;
}
}
static void RFCOMM_ProcessTestCommand(const RFCOMM_Command_t* const CommandHeader, const uint8_t CommandDataLen,
const uint8_t* CommandData, Bluetooth_Channel_t* const ACLChannel)
{
const uint8_t* Params = (const uint8_t*)CommandData;
BT_RFCOMM_DEBUG(1, "<< TEST Command");
struct
{
RFCOMM_Command_t CommandHeader;
uint8_t Length;
uint8_t TestData[CommandDataLen];
} TestResponse;
/* Fill out the Test response data */
TestResponse.CommandHeader = (RFCOMM_Command_t){.Command = RFCOMM_Control_Test, .EA = true, .CR = false};
TestResponse.Length = (CommandDataLen << 1) | 0x01;
memcpy(TestResponse.TestData, Params, CommandDataLen);
BT_RFCOMM_DEBUG(1, ">> TEST Response");
/* Send the PDN response to acknowledge the command */
RFCOMM_SendFrame(RFCOMM_CONTROL_DLCI, false, RFCOMM_Frame_UIH, sizeof(TestResponse), &TestResponse, ACLChannel);
}
static void RFCOMM_ProcessFCECommand(const RFCOMM_Command_t* const CommandHeader, const uint8_t* CommandData,
Bluetooth_Channel_t* const ACLChannel)
{
BT_RFCOMM_DEBUG(1, "<< FCE Command");
}
static void RFCOMM_ProcessFCDCommand(const RFCOMM_Command_t* const CommandHeader, const uint8_t* CommandData,
Bluetooth_Channel_t* const ACLChannel)
{
BT_RFCOMM_DEBUG(1, "<< FCD Command");
}
static void RFCOMM_ProcessMSCCommand(const RFCOMM_Command_t* const CommandHeader, const uint8_t CommandDataLen,
const uint8_t* CommandData, Bluetooth_Channel_t* const ACLChannel)
{
const RFCOMM_MSC_Parameters_t* Params = (const RFCOMM_MSC_Parameters_t*)CommandData;
BT_RFCOMM_DEBUG(1, "<< MSC %s", (CommandHeader->CR) ? "Command" : "Response");
BT_RFCOMM_DEBUG(2, "-- DLCI: 0x%02X", Params->Channel.DLCI);
/* Ignore status flags sent to the control channel */
if (Params->Channel.DLCI == RFCOMM_CONTROL_DLCI)
return;
/* Retrieve existing channel configuration data, if already opened */
RFCOMM_Channel_t* RFCOMMChannel = RFCOMM_GetChannelData(Params->Channel.DLCI);
/* If the channel does not exist, abort */
if (RFCOMMChannel == NULL)
return;
/* Check if the MSC packet is a command or a response */
if (CommandHeader->CR)
{
/* Save the new channel signals to the channel state structure */
RFCOMMChannel->Remote.Signals = Params->Signals;
RFCOMMChannel->ConfigFlags |= RFCOMM_CONFIG_REMOTESIGNALS;
/* If the command contains the optional break signals field, store the value */
if (CommandDataLen == sizeof(RFCOMM_MSC_Parameters_t))
RFCOMMChannel->Remote.BreakSignal = Params->BreakSignal;
/* Notify the user application that the signals have been received */
RFCOMM_ChannelSignalsReceived(RFCOMMChannel);
struct
{
RFCOMM_Command_t CommandHeader;
uint8_t Length;
RFCOMM_MSC_Parameters_t Params;
} MSResponse;
/* Fill out the MS response data */
MSResponse.CommandHeader = (RFCOMM_Command_t){.Command = RFCOMM_Control_ModemStatus, .EA = true, .CR = false};
MSResponse.Length = (CommandDataLen << 1) | 0x01;
memcpy(&MSResponse.Params, Params, sizeof(RFCOMM_MSC_Parameters_t));
BT_RFCOMM_DEBUG(1, ">> MSC Response");
/* Send the MSC response to acknowledge the command */
RFCOMM_SendFrame(RFCOMM_CONTROL_DLCI, false, RFCOMM_Frame_UIH,
(sizeof(MSResponse) - sizeof(MSResponse.Params) + CommandDataLen), &MSResponse, ACLChannel);
}
else
{
/* Indicate that the remote device has acknowledged the sent signals */
RFCOMMChannel->ConfigFlags |= RFCOMM_CONFIG_LOCALSIGNALS;
}
}
static void RFCOMM_ProcessRPNCommand(const RFCOMM_Command_t* const CommandHeader, const uint8_t* CommandData,
Bluetooth_Channel_t* const ACLChannel)
{
BT_RFCOMM_DEBUG(1, "<< RPN Command");
}
static void RFCOMM_ProcessRLSCommand(const RFCOMM_Command_t* const CommandHeader, const uint8_t* CommandData,
Bluetooth_Channel_t* const ACLChannel)
{
BT_RFCOMM_DEBUG(1, "<< RLS Command");
}
static void RFCOMM_ProcessDPNCommand(const RFCOMM_Command_t* const CommandHeader, const uint8_t* CommandData,
Bluetooth_Channel_t* const ACLChannel)
{
const RFCOMM_DPN_Parameters_t* Params = (const RFCOMM_DPN_Parameters_t*)CommandData;
BT_RFCOMM_DEBUG(1, "<< DPN Command");
BT_RFCOMM_DEBUG(2, "-- DLCI: 0x%02X", Params->DLCI);
/* Ignore parameter negotiations to the control channel */
if (Params->DLCI == RFCOMM_CONTROL_DLCI)
return;
/* Retrieve existing channel configuration data, if already opened */
RFCOMM_Channel_t* RFCOMMChannel = RFCOMM_GetChannelData(Params->DLCI);
/* Check if the channel has no corresponding entry - remote did not open it first */
if (RFCOMMChannel == NULL)
{
/* Create a new entry in the channel table for the new channel */
RFCOMMChannel = RFCOMM_GetFreeChannelEntry(Params->DLCI);
/* No free entry was found, discard the request */
if (RFCOMMChannel == NULL)
{
BT_RFCOMM_DEBUG(2, "-- No Free Channel");
return;
}
}
/* Save the new channel configuration */
RFCOMMChannel->State = RFCOMM_Channel_Configure;
RFCOMMChannel->Priority = Params->Priority;
RFCOMMChannel->MTU = Params->MaximumFrameSize;
struct
{
RFCOMM_Command_t CommandHeader;
uint8_t Length;
RFCOMM_DPN_Parameters_t Params;
} DPNResponse;
/* Fill out the DPN response data */
DPNResponse.CommandHeader = (RFCOMM_Command_t){.Command = RFCOMM_Control_DLCParameterNegotiation, .EA = true, .CR = false};
DPNResponse.Length = (sizeof(DPNResponse.Params) << 1) | 0x01;
memcpy(&DPNResponse.Params, Params, sizeof(RFCOMM_DPN_Parameters_t));
DPNResponse.Params.ConvergenceLayer = 0x00; // TODO: Enable credit based transaction support
BT_RFCOMM_DEBUG(1, ">> DPN Response");
/* Send the DPN response to acknowledge the command */
RFCOMM_SendFrame(RFCOMM_CONTROL_DLCI, false, RFCOMM_Frame_UIH, sizeof(DPNResponse), &DPNResponse, ACLChannel);
}
Demos/Host/Incomplete/BluetoothHost/Lib/RFCOMMControl.h
View file @ 1167b699
/*
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.
*/
/** \file
*
* Header file for RFCOMMControl.c.
*/
#ifndef _RFCOMM_CONTROL_H_
#define _RFCOMM_CONTROL_H_
/* Includes: */
#include <avr/io.h>
#include <avr/pgmspace.h>
#include <string.h>
#include <stdbool.h>
#include <stdio.h>
#include <LUFA/Common/Common.h>
#include <LUFA/Drivers/Peripheral/SerialStream.h>
#include "BluetoothStack.h"
#include "RFCOMM.h"
/* Macros: */
#define RFCOMM_SIGNAL_FC (1 << 1)
#define RFCOMM_SIGNAL_RTC (1 << 2)
#define RFCOMM_SIGNAL_RTR (1 << 3)
#define RFCOMM_SIGNAL_IC (1 << 6)
#define RFCOMM_SIGNAL_DV (1 << 7)
#define RFCOMM_CONFIG_REMOTESIGNALS (1 << 0)
#define RFCOMM_CONFIG_LOCALSIGNALS (1 << 1)
#define RFCOMM_CONFIG_LOCALSIGNALSSENT (1 << 2)
#define RFCOMM_CONFIG_ABMMODESET (1 << 3)
/* Enums: */
enum RFCOMM_Control_Commands_t
{
RFCOMM_Control_Test = (0x20 >> 2),
RFCOMM_Control_FlowControlEnable = (0xA0 >> 2),
RFCOMM_Control_FlowControlDisable = (0x60 >> 2),
RFCOMM_Control_ModemStatus = (0xE0 >> 2),
RFCOMM_Control_RemotePortNegotiation = (0x90 >> 2),
RFCOMM_Control_RemoteLineStatus = (0x50 >> 2),
RFCOMM_Control_DLCParameterNegotiation = (0x80 >> 2),
RFCOMM_Control_NonSupportedCommand = (0x10 >> 2),
};
/* Type Defines: */
typedef struct
{
unsigned char EA : 1;
unsigned char CR : 1;
unsigned char DLCI : 6;
} RFCOMM_Address_t;
typedef struct
{
RFCOMM_Address_t Address;
uint8_t Control;
} RFCOMM_Header_t;
typedef struct
{
unsigned char EA : 1;
unsigned char CR : 1;
unsigned char Command : 6;
} RFCOMM_Command_t;
typedef struct
{
uint8_t DLCI;
unsigned char FrameType : 4;
unsigned char ConvergenceLayer : 4;
uint8_t Priority;
uint8_t ACKTimerTicks;
uint16_t MaximumFrameSize;
uint8_t MaxRetransmissions;
uint8_t RecoveryWindowSize;
} RFCOMM_DPN_Parameters_t;
typedef struct
{
RFCOMM_Address_t Channel;
uint8_t Signals;
uint8_t BreakSignal;
} RFCOMM_MSC_Parameters_t;
/* Function Prototypes: */
void RFCOMM_ProcessControlCommand(const uint8_t* Command, Bluetooth_Channel_t* const Channel);