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Start implementation of RFCOMM decoding layer. Add new service initialize routines for each Bluetooth service - currently unused, but will eventually reset the service state of RFCOMM when a new connection is made.

Browse Source
pull/1469/head
Dean Camera 15 years ago
parent 13d812a718
commit 9293de2491
5 changed files with 111 additions and 1 deletions
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4
Demos/Host/Incomplete/BluetoothHost/BluetoothHost.c
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@ -213,6 +213,10 @@ void Bluetooth_StackInitialized(void)
printf_P(PSTR("Stack initialized with local address %02X:%02X:%02X:%02X:%02X:%02X.\r\n"),
Bluetooth_State.LocalBDADDR[5], Bluetooth_State.LocalBDADDR[4], Bluetooth_State.LocalBDADDR[3],
Bluetooth_State.LocalBDADDR[2], Bluetooth_State.LocalBDADDR[1], Bluetooth_State.LocalBDADDR[0]);
/* Reinitialize the services placed on top of the bluetooth stack ready for new connections */
SDP_Initialize();
RFCOMM_Initialize();
}
/** Bluetooth stack callback event for a Bluetooth connection request. When this callback fires, the

69
Demos/Host/Incomplete/BluetoothHost/Lib/RFCOMM.c
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@ -28,9 +28,76 @@
this software.
*/
#define INCLUDE_FROM_RFCOMM_C
#include "RFCOMM.h"
/** 8-Bit CRC table used by the FCS field of each RFCOMM encoded frame, sourced from the ETSI TS 101 369 V7.2.0
* specification document, upon which the RFCOMM specification is based.
*/
const uint8_t CRC8_Table[256] PROGMEM =
{
0x00, 0x91, 0xE3, 0x72, 0x07, 0x96, 0xE4, 0x75, 0x0E, 0x9F, 0xED, 0x7C, 0x09, 0x98, 0xEA, 0x7B,
0x1C, 0x8D, 0xFF, 0x6E, 0x1B, 0x8A, 0xF8, 0x69, 0x12, 0x83, 0xF1, 0x60, 0x15, 0x84, 0xF6, 0x67,
0x38, 0xA9, 0xDB, 0x4A, 0x3F, 0xAE, 0xDC, 0x4D, 0x36, 0xA7, 0xD5, 0x44, 0x31, 0xA0, 0xD2, 0x43,
0x24, 0xB5, 0xC7, 0x56, 0x23, 0xB2, 0xC0, 0x51, 0x2A, 0xBB, 0xC9, 0x58, 0x2D, 0xBC, 0xCE, 0x5F,
0x70, 0xE1, 0x93, 0x02, 0x77, 0xE6, 0x94, 0x05, 0x7E, 0xEF, 0x9D, 0x0C, 0x79, 0xE8, 0x9A, 0x0B,
0x6C, 0xFD, 0x8F, 0x1E, 0x6B, 0xFA, 0x88, 0x19, 0x62, 0xF3, 0x81, 0x10, 0x65, 0xF4, 0x86, 0x17,
0x48, 0xD9, 0xAB, 0x3A, 0x4F, 0xDE, 0xAC, 0x3D, 0x46, 0xD7, 0xA5, 0x34, 0x41, 0xD0, 0xA2, 0x33,
0x54, 0xC5, 0xB7, 0x26, 0x53, 0xC2, 0xB0, 0x21, 0x5A, 0xCB, 0xB9, 0x28, 0x5D, 0xCC, 0xBE, 0x2F,
0xE0, 0x71, 0x03, 0x92, 0xE7, 0x76, 0x04, 0x95, 0xEE, 0x7F, 0x0D, 0x9C, 0xE9, 0x78, 0x0A, 0x9B,
0xFC, 0x6D, 0x1F, 0x8E, 0xFB, 0x6A, 0x18, 0x89, 0xF2, 0x63, 0x11, 0x80, 0xF5, 0x64, 0x16, 0x87,
0xD8, 0x49, 0x3B, 0xAA, 0xDF, 0x4E, 0x3C, 0xAD, 0xD6, 0x47, 0x35, 0xA4, 0xD1, 0x40, 0x32, 0xA3,
0xC4, 0x55, 0x27, 0xB6, 0xC3, 0x52, 0x20, 0xB1, 0xCA, 0x5B, 0x29, 0xB8, 0xCD, 0x5C, 0x2E, 0xBF,
0x90, 0x01, 0x73, 0xE2, 0x97, 0x06, 0x74, 0xE5, 0x9E, 0x0F, 0x7D, 0xEC, 0x99, 0x08, 0x7A, 0xEB,
0x8C, 0x1D, 0x6F, 0xFE, 0x8B, 0x1A, 0x68, 0xF9, 0x82, 0x13, 0x61, 0xF0, 0x85, 0x14, 0x66, 0xF7,
0xA8, 0x39, 0x4B, 0xDA, 0xAF, 0x3E, 0x4C, 0xDD, 0xA6, 0x37, 0x45, 0xD4, 0xA1, 0x30, 0x42, 0xD3,
0xB4, 0x25, 0x57, 0xC6, 0xB3, 0x22, 0x50, 0xC1, 0xBA, 0x2B, 0x59, 0xC8, 0xBD, 0x2C, 0x5E, 0xCF
};
/** Initializes the RFCOMM service, ready for new connections from a SDP client. */
void RFCOMM_Initialize(void)
{
/* Not currently used */
}
void RFCOMM_ProcessPacket(void* Data, Bluetooth_Channel_t* const Channel)
{
BT_RFCOMM_DEBUG(1, "PACKET RECEIVED");
RFCOMM_Header_t* FrameHeader = (RFCOMM_Header_t*)Data;
/* Decode the RFCOMM frame type from the header */
switch (FrameHeader->FrameType & ~FRAME_POLL_FINAL)
{
case RFCOMM_Frame_SABM:
BT_RFCOMM_DEBUG(1, "<< SABM Received");
break;
case RFCOMM_Frame_UA:
BT_RFCOMM_DEBUG(1, "<< UA Received");
break;
case RFCOMM_Frame_DM:
BT_RFCOMM_DEBUG(1, "<< DM Received");
break;
case RFCOMM_Frame_DISC:
BT_RFCOMM_DEBUG(1, "<< DISC Received");
break;
case RFCOMM_Frame_UIH:
BT_RFCOMM_DEBUG(1, "<< UIH Received");
break;
}
}
static uint16_t RFCOMM_GetFrameDataLength(void** BufferPos)
{
uint8_t FirstOctet = *((uint8_t*)*BufferPos);
(*BufferPos)++;
uint8_t SecondOctet = 0;
if (!(FirstOctet & 0x01))
{
SecondOctet = *((uint8_t*)*BufferPos);
(*BufferPos)++;
}
return (((uint16_t)SecondOctet << 7) | (FirstOctet >> 1));
}

31
Demos/Host/Incomplete/BluetoothHost/Lib/RFCOMM.h
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@ -38,6 +38,7 @@
/* Includes: */
#include <avr/io.h>
#include <avr/pgmspace.h>
#include <string.h>
#include <stdbool.h>
#include <stdio.h>
@ -50,8 +51,38 @@
/* Macros: */
#define BT_RFCOMM_DEBUG(l, s, ...) do { if (RFCOMM_DEBUG_LEVEL >= l) printf_P(PSTR("(RFCOMM) " s "\r\n"), ##__VA_ARGS__); } while (0)
#define RFCOMM_DEBUG_LEVEL 2
#define FRAME_POLL_FINAL (1 << 5)
/* Enums: */
enum RFCOMM_Frame_Types_t
{
RFCOMM_Frame_SABM = 0x2F, /**< Set Asynchronous Balance Mode Field */
RFCOMM_Frame_UA = 0x63, /**< Unnumbered Acknowledgement Field */
RFCOMM_Frame_DM = 0x0F, /**< Disconnected Mode Field */
RFCOMM_Frame_DISC = 0x43, /**< Disconnect Field */
RFCOMM_Frame_UIH = 0xEF, /**< Unnumbered Information with Header check Field */
};
/* Type Defines: */
typedef struct
{
struct
{
unsigned char LogicalChannel : 6;
unsigned char CommandResponse : 1;
unsigned char LastAddressOctet : 1;
} Header;
uint8_t FrameType;
} RFCOMM_Header_t;
/* Function Prototypes: */
void RFCOMM_Initialize(void);
void RFCOMM_ProcessPacket(void* Data, Bluetooth_Channel_t* const Channel);
#if defined(INCLUDE_FROM_RFCOMM_C)
static uint16_t RFCOMM_GetFrameDataLength(void** BufferPos);
#endif
#endif

6
Demos/Host/Incomplete/BluetoothHost/Lib/ServiceDiscoveryProtocol.c
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@ -40,6 +40,12 @@ const ServiceAttributeTable_t* SDP_Services_Table[] PROGMEM =
/** Base UUID value common to all standardized Bluetooth services */
const UUID_t BaseUUID PROGMEM = {0x00000000, BASE_80BIT_UUID};
/** Initializes the SDP service, ready for new connections from a SDP client. */
void SDP_Initialize(void)
{
/* Not currently used */
}
/** 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
* services the local device exposes.

2
Demos/Host/Incomplete/BluetoothHost/Lib/ServiceDiscoveryProtocol.h
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@ -38,6 +38,7 @@
/* Includes: */
#include <avr/io.h>
#include <avr/pgmspace.h>
#include <string.h>
#include <stdbool.h>
#include <stdio.h>
@ -210,6 +211,7 @@
}
/* Function Prototypes: */
void SDP_Initialize(void);
void SDP_ProcessPacket(void* Data, Bluetooth_Channel_t* const Channel);
#if defined(INCLUDE_FROM_SERVICEDISCOVERYPROTOCOL_C)

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