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137 lines
5.2 KiB
137 lines
5.2 KiB
/*
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LUFA Library
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Copyright (C) Dean Camera, 2010.
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dean [at] fourwalledcubicle [dot] com
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www.fourwalledcubicle.com
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*/
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/*
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Copyright 2010 Dean Camera (dean [at] fourwalledcubicle [dot] com)
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Permission to use, copy, modify, distribute, and sell this
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software and its documentation for any purpose is hereby granted
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without fee, provided that the above copyright notice appear in
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all copies and that both that the copyright notice and this
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permission notice and warranty disclaimer appear in supporting
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documentation, and that the name of the author not be used in
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advertising or publicity pertaining to distribution of the
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software without specific, written prior permission.
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The author disclaim all warranties with regard to this
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software, including all implied warranties of merchantability
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and fitness. In no event shall the author be liable for any
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special, indirect or consequential damages or any damages
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whatsoever resulting from loss of use, data or profits, whether
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in an action of contract, negligence or other tortious action,
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arising out of or in connection with the use or performance of
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this software.
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*/
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#define INCLUDE_FROM_RFCOMM_C
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#include "RFCOMM.h"
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/** 8-Bit CRC table used by the FCS field of each RFCOMM encoded frame, sourced from the ETSI TS 101 369 V7.2.0
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* specification document, upon which the RFCOMM specification is based.
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*/
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const uint8_t CRC8_Table[256] PROGMEM =
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{
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0x00, 0x91, 0xE3, 0x72, 0x07, 0x96, 0xE4, 0x75, 0x0E, 0x9F, 0xED, 0x7C, 0x09, 0x98, 0xEA, 0x7B,
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0x1C, 0x8D, 0xFF, 0x6E, 0x1B, 0x8A, 0xF8, 0x69, 0x12, 0x83, 0xF1, 0x60, 0x15, 0x84, 0xF6, 0x67,
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0x38, 0xA9, 0xDB, 0x4A, 0x3F, 0xAE, 0xDC, 0x4D, 0x36, 0xA7, 0xD5, 0x44, 0x31, 0xA0, 0xD2, 0x43,
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0x24, 0xB5, 0xC7, 0x56, 0x23, 0xB2, 0xC0, 0x51, 0x2A, 0xBB, 0xC9, 0x58, 0x2D, 0xBC, 0xCE, 0x5F,
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0x70, 0xE1, 0x93, 0x02, 0x77, 0xE6, 0x94, 0x05, 0x7E, 0xEF, 0x9D, 0x0C, 0x79, 0xE8, 0x9A, 0x0B,
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0x6C, 0xFD, 0x8F, 0x1E, 0x6B, 0xFA, 0x88, 0x19, 0x62, 0xF3, 0x81, 0x10, 0x65, 0xF4, 0x86, 0x17,
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0x48, 0xD9, 0xAB, 0x3A, 0x4F, 0xDE, 0xAC, 0x3D, 0x46, 0xD7, 0xA5, 0x34, 0x41, 0xD0, 0xA2, 0x33,
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0x54, 0xC5, 0xB7, 0x26, 0x53, 0xC2, 0xB0, 0x21, 0x5A, 0xCB, 0xB9, 0x28, 0x5D, 0xCC, 0xBE, 0x2F,
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0xE0, 0x71, 0x03, 0x92, 0xE7, 0x76, 0x04, 0x95, 0xEE, 0x7F, 0x0D, 0x9C, 0xE9, 0x78, 0x0A, 0x9B,
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0xFC, 0x6D, 0x1F, 0x8E, 0xFB, 0x6A, 0x18, 0x89, 0xF2, 0x63, 0x11, 0x80, 0xF5, 0x64, 0x16, 0x87,
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0xD8, 0x49, 0x3B, 0xAA, 0xDF, 0x4E, 0x3C, 0xAD, 0xD6, 0x47, 0x35, 0xA4, 0xD1, 0x40, 0x32, 0xA3,
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0xC4, 0x55, 0x27, 0xB6, 0xC3, 0x52, 0x20, 0xB1, 0xCA, 0x5B, 0x29, 0xB8, 0xCD, 0x5C, 0x2E, 0xBF,
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0x90, 0x01, 0x73, 0xE2, 0x97, 0x06, 0x74, 0xE5, 0x9E, 0x0F, 0x7D, 0xEC, 0x99, 0x08, 0x7A, 0xEB,
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0x8C, 0x1D, 0x6F, 0xFE, 0x8B, 0x1A, 0x68, 0xF9, 0x82, 0x13, 0x61, 0xF0, 0x85, 0x14, 0x66, 0xF7,
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0xA8, 0x39, 0x4B, 0xDA, 0xAF, 0x3E, 0x4C, 0xDD, 0xA6, 0x37, 0x45, 0xD4, 0xA1, 0x30, 0x42, 0xD3,
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0xB4, 0x25, 0x57, 0xC6, 0xB3, 0x22, 0x50, 0xC1, 0xBA, 0x2B, 0x59, 0xC8, 0xBD, 0x2C, 0x5E, 0xCF
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};
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/** Initializes the RFCOMM service, ready for new connections from a SDP client. */
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void RFCOMM_Initialize(void)
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{
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/* Not currently used */
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}
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void RFCOMM_ProcessPacket(void* Data, Bluetooth_Channel_t* const Channel)
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{
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RFCOMM_Header_t* FrameHeader = (RFCOMM_Header_t*)Data;
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/* Decode the RFCOMM frame type from the header */
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switch (FrameHeader->FrameType & ~FRAME_POLL_FINAL)
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{
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case RFCOMM_Frame_SABM:
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RFCOMM_ProcessSABM(FrameHeader, Channel);
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break;
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case RFCOMM_Frame_UA:
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RFCOMM_ProcessUA(FrameHeader, Channel);
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break;
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case RFCOMM_Frame_DM:
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RFCOMM_ProcessDM(FrameHeader, Channel);
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break;
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case RFCOMM_Frame_DISC:
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RFCOMM_ProcessDISC(FrameHeader, Channel);
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break;
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case RFCOMM_Frame_UIH:
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RFCOMM_ProcessUIH(FrameHeader, Channel);
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break;
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}
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}
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static void RFCOMM_ProcessSABM(const RFCOMM_Header_t* const FrameHeader, Bluetooth_Channel_t* const Channel)
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{
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uint8_t* CurrBufferPos = ((uint8_t*)FrameHeader + sizeof(RFCOMM_Header_t));
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uint16_t DataLen = RFCOMM_GetFrameDataLength(&CurrBufferPos);
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BT_RFCOMM_DEBUG(1, "<< SABM Received");
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BT_RFCOMM_DEBUG(2, "-- Data Length 0x%04X", DataLen);
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for (uint16_t i = 0; i < DataLen; i++)
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printf("0x%02X ", CurrBufferPos[i]);
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printf("\r\n");
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}
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static void RFCOMM_ProcessUA(const RFCOMM_Header_t* const FrameHeader, Bluetooth_Channel_t* const Channel)
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{
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BT_RFCOMM_DEBUG(1, "<< UA Received");
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}
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static void RFCOMM_ProcessDM(const RFCOMM_Header_t* const FrameHeader, Bluetooth_Channel_t* const Channel)
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{
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BT_RFCOMM_DEBUG(1, "<< DM Received");
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}
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static void RFCOMM_ProcessDISC(const RFCOMM_Header_t* const FrameHeader, Bluetooth_Channel_t* const Channel)
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{
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BT_RFCOMM_DEBUG(1, "<< DISC Received");
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}
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static void RFCOMM_ProcessUIH(const RFCOMM_Header_t* const FrameHeader, Bluetooth_Channel_t* const Channel)
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{
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BT_RFCOMM_DEBUG(1, "<< UIH Received");
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}
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static uint16_t RFCOMM_GetFrameDataLength(void** BufferPos)
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{
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uint8_t FirstOctet = *((uint8_t*)*BufferPos);
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(*BufferPos)++;
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uint8_t SecondOctet = 0;
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if (!(FirstOctet & 0x01))
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{
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SecondOctet = *((uint8_t*)*BufferPos);
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(*BufferPos)++;
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}
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return (((uint16_t)SecondOctet << 7) | (FirstOctet >> 1));
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}
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