X-Git-Url: http://git.linex4red.de/pub/USBasp.git/blobdiff_plain/b522e35965ab19206ab76f83026fb42f052a2d92..ec537fd84d6ad3fd0dfa1b55efa2c2d554c1db48:/Demos/Host/Incomplete/BluetoothHost/Lib/RFCOMM.c diff --git a/Demos/Host/Incomplete/BluetoothHost/Lib/RFCOMM.c b/Demos/Host/Incomplete/BluetoothHost/Lib/RFCOMM.c index 60cce8484..ac7895112 100644 --- a/Demos/Host/Incomplete/BluetoothHost/Lib/RFCOMM.c +++ b/Demos/Host/Incomplete/BluetoothHost/Lib/RFCOMM.c @@ -1,21 +1,21 @@ /* LUFA Library Copyright (C) Dean Camera, 2010. - + dean [at] fourwalledcubicle [dot] com - www.fourwalledcubicle.com + www.lufa-lib.org */ /* Copyright 2010 Dean Camera (dean [at] fourwalledcubicle [dot] com) - Permission to use, copy, modify, distribute, and sell this + 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 + 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 + 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 @@ -65,40 +65,83 @@ const uint8_t CRC8_Table[256] PROGMEM = RFCOMM_Channel_t RFCOMM_Channels[RFCOMM_MAX_OPEN_CHANNELS]; -/** Initializes the RFCOMM service, ready for new connections from a SDP client. */ +/** Initialises the RFCOMM service, ready for new connections from a SDP client. */ void RFCOMM_Initialize(void) { - /* Reset the RFCOMM channel structures, to invalidate any confiured RFCOMM channels */ + /* Reset the RFCOMM channel structures, to invalidate any configured RFCOMM channels */ for (uint8_t i = 0; i < RFCOMM_MAX_OPEN_CHANNELS; i++) - RFCOMM_Channels[i].DLCI = 0x00; + RFCOMM_Channels[i].State = RFCOMM_Channel_Closed; } -void RFCOMM_ProcessPacket(void* Data, Bluetooth_Channel_t* const Channel) +/** Services all the logical RFCOMM channels on the given ACL channel, sending any RFCOMM control requests to + * the remote device as needed to establish new logical RFCOMM channels. This function should be called repeatedly + * in the main program loop when an ACL channel with an RFCOMM PSM has been established between the local and remote + * device. + * + * \param[in] ACLChannel ACL channel which has been previously opened to handle RFCOMM traffic between devices + */ +void RFCOMM_ServiceChannels(Bluetooth_Channel_t* const ACLChannel) +{ + /* Abort if the RFCOMM ACL channel is not currently open */ + if ((ACLChannel == NULL) || (ACLChannel->State != BT_Channel_Open)) + return; + + /* Loop through each of the RFCOMM channels, send any required RFCOMM control commands */ + for (uint8_t i = 0; i < RFCOMM_MAX_OPEN_CHANNELS; i++) + { + RFCOMM_Channel_t* RFCOMMChannel = &RFCOMM_Channels[i]; + + if (RFCOMMChannel->State == RFCOMM_Channel_Configure) + { + /* Check if the local signals have not yet been sent on the current channel */ + if (!(RFCOMMChannel->ConfigFlags & RFCOMM_CONFIG_LOCALSIGNALSSENT)) + { + /* Indicate that the local signals have been sent, transmit them to the remote device */ + RFCOMMChannel->ConfigFlags |= RFCOMM_CONFIG_LOCALSIGNALSSENT; + RFCOMM_SendChannelSignals(RFCOMMChannel, ACLChannel); + } + + /* If signals have been configured in both directions, progress to the open state */ + if ((RFCOMMChannel->ConfigFlags & (RFCOMM_CONFIG_REMOTESIGNALS | RFCOMM_CONFIG_LOCALSIGNALS)) == + (RFCOMM_CONFIG_REMOTESIGNALS | RFCOMM_CONFIG_LOCALSIGNALS)) + { + RFCOMMChannel->State = RFCOMM_Channel_Open; + RFCOMM_ChannelOpened(RFCOMMChannel); + } + } + } +} + +/** Processes an incoming RFCOMM packet on an ACL channel which has been previously opened between the local and + * a remote device to handle RFCOMM traffic. + * + * \param[in] Data Incoming packet data containing the RFCOMM packet + * \param[in] ACLChannel ACL channel the request was issued to by the remote device + */ +void RFCOMM_ProcessPacket(void* Data, + Bluetooth_Channel_t* const ACLChannel) { const RFCOMM_Header_t* FrameHeader = (const RFCOMM_Header_t*)Data; const uint8_t* FrameData = (const uint8_t*)Data + sizeof(RFCOMM_Header_t); - uint16_t FrameDataLen = RFCOMM_GetFrameDataLength(FrameData); + uint16_t FrameDataLen = RFCOMM_GetVariableFieldValue(&FrameData); - /* Adjust the frame data pointer to skip over the variable size field */ - FrameData += (FrameDataLen < 128) ? 1 : 2; - /* Decode the RFCOMM frame type from the header */ switch (FrameHeader->Control & ~FRAME_POLL_FINAL) { case RFCOMM_Frame_DM: - RFCOMM_ProcessDM(&FrameHeader->Address, Channel); + RFCOMM_ProcessDM(&FrameHeader->Address, ACLChannel); break; case RFCOMM_Frame_DISC: - RFCOMM_ProcessDISC(&FrameHeader->Address, Channel); + RFCOMM_ProcessDISC(&FrameHeader->Address, ACLChannel); break; case RFCOMM_Frame_SABM: - RFCOMM_ProcessSABM(&FrameHeader->Address, Channel); + RFCOMM_ProcessSABM(&FrameHeader->Address, ACLChannel); break; case RFCOMM_Frame_UA: - RFCOMM_ProcessUA(&FrameHeader->Address, Channel); + RFCOMM_ProcessUA(&FrameHeader->Address, ACLChannel); break; case RFCOMM_Frame_UIH: - RFCOMM_ProcessUIH(&FrameHeader->Address, FrameDataLen, FrameData, Channel); + RFCOMM_ProcessUIH(&FrameHeader->Address, FrameDataLen, FrameData, ACLChannel); break; default: BT_RFCOMM_DEBUG(1, "<< Unknown Frame Received"); @@ -106,133 +149,130 @@ void RFCOMM_ProcessPacket(void* Data, Bluetooth_Channel_t* const Channel) } } -static void RFCOMM_ProcessDM(const RFCOMM_Address_t* const FrameAddress, Bluetooth_Channel_t* const Channel) +/** Sends an RFCOMM notification to the remote device that the local terminal control signals (located in the + * "Local" structure of the RFCOMM channel) have changed, pushing the new signals to the remote device. + * + * \param[in] RFCOMMChannel RFCOMM logical channel whose local terminal signals have changed + * \param[in] ACLChannel ACL channel which has been opened to carry RFCOMM traffic between devices + */ +void RFCOMM_SendChannelSignals(const RFCOMM_Channel_t* const RFCOMMChannel, + Bluetooth_Channel_t* const ACLChannel) { - BT_RFCOMM_DEBUG(1, "<< DM Received"); - BT_RFCOMM_DEBUG(2, "-- DLCI 0x%02X", FrameAddress->DLCI); + BT_RFCOMM_DEBUG(1, ">> MSC Command"); + BT_RFCOMM_DEBUG(2, "-- DLCI 0x%02X", RFCOMMChannel->DLCI); + + struct + { + RFCOMM_Command_t CommandHeader; + uint8_t Length; + RFCOMM_MSC_Parameters_t Params; + } MSCommand; + + MSCommand.CommandHeader = (RFCOMM_Command_t){.Command = RFCOMM_Control_ModemStatus, .EA = true, .CR = true}; + MSCommand.Length = (sizeof(MSCommand.Params) << 1) | 0x01; + MSCommand.Params.Channel = (RFCOMM_Address_t){.DLCI = RFCOMMChannel->DLCI, .EA = true, .CR = true}; + MSCommand.Params.Signals = RFCOMMChannel->Local.Signals; + MSCommand.Params.BreakSignal = RFCOMMChannel->Local.BreakSignal; + + /* Send the MSC command to the remote device */ + RFCOMM_SendFrame(RFCOMM_CONTROL_DLCI, true, RFCOMM_Frame_UIH, sizeof(MSCommand), &MSCommand, ACLChannel); } -static void RFCOMM_ProcessDISC(const RFCOMM_Address_t* const FrameAddress, Bluetooth_Channel_t* const Channel) +/** Sends new data through an open logical RFCOMM channel. This should be used to transmit data through a + * RFCOMM channel once it has been opened. + * + * \param[in] DataLen Length of the RFCOMM data to send, in bytes + * \param[in] Data Pointer to a buffer where the data to send is located + * \param[in] RFCOMMChannel RFCOMM logical channel which is to be transmitted to + * \param[in] ACLChannel ACL channel which has been opened to carry RFCOMM traffic between devices + */ +void RFCOMM_SendData(const uint16_t DataLen, + const uint8_t* Data, + const RFCOMM_Channel_t* const RFCOMMChannel, + Bluetooth_Channel_t* const ACLChannel) { - BT_RFCOMM_DEBUG(1, "<< DISC Received"); - BT_RFCOMM_DEBUG(2, "-- DLCI 0x%02X", FrameAddress->DLCI); + if (RFCOMMChannel->State != RFCOMM_Channel_Open) + return; - // TODO: Close down connection + BT_RFCOMM_DEBUG(1, ">> UIH Frame"); + BT_RFCOMM_DEBUG(2, "-- DLCI 0x%02X", RFCOMMChannel->DLCI); - BT_RFCOMM_DEBUG(1, ">> UA Sent"); - RFCOMM_SendFrame(FrameAddress->DLCI, true, (RFCOMM_Frame_UA | FRAME_POLL_FINAL), 0, NULL, Channel); + /* Send the MSC command to the remote device */ + RFCOMM_SendFrame(RFCOMMChannel->DLCI, false, RFCOMM_Frame_UIH, DataLen, Data, ACLChannel); } -static void RFCOMM_ProcessSABM(const RFCOMM_Address_t* const FrameAddress, Bluetooth_Channel_t* const Channel) +RFCOMM_Channel_t* RFCOMM_GetFreeChannelEntry(const uint8_t DLCI) { - BT_RFCOMM_DEBUG(1, "<< SABM Received"); - BT_RFCOMM_DEBUG(2, "-- DLCI 0x%02X", FrameAddress->DLCI); - /* Find a free entry in the RFCOMM channel multiplexer state array */ for (uint8_t i = 0; i < RFCOMM_MAX_OPEN_CHANNELS; i++) { - RFCOMM_Channel_t* CurrRFCOMMChannel = &RFCOMM_Channels[i]; - - /* If the channel's DLCI is zero, the channel state entry is free */ - if (!(CurrRFCOMMChannel->DLCI)) + RFCOMM_Channel_t* RFCOMMChannel = &RFCOMM_Channels[i]; + + /* If the channel's state is closed, the channel state entry is free */ + if (RFCOMMChannel->State == RFCOMM_Channel_Closed) { - CurrRFCOMMChannel->DLCI = FrameAddress->DLCI; - CurrRFCOMMChannel->Configured = false; - - BT_RFCOMM_DEBUG(1, ">> UA Sent"); - RFCOMM_SendFrame(FrameAddress->DLCI, true, (RFCOMM_Frame_UA | FRAME_POLL_FINAL), 0, NULL, Channel); - return; + RFCOMMChannel->DLCI = DLCI; + RFCOMMChannel->State = RFCOMM_Channel_Configure; + RFCOMMChannel->Priority = 7 + (RFCOMMChannel->DLCI & 0xF8); + RFCOMMChannel->MTU = 0xFFFF; + RFCOMMChannel->Remote.Signals = 0 | (1 << 0); + RFCOMMChannel->Remote.BreakSignal = 0 | (1 << 0); + RFCOMMChannel->Local.Signals = RFCOMM_SIGNAL_RTC | RFCOMM_SIGNAL_RTR | RFCOMM_SIGNAL_DV | (1 << 0); + RFCOMMChannel->Local.BreakSignal = 0 | (1 << 0); + RFCOMMChannel->ConfigFlags = 0; + + return RFCOMMChannel; } } - BT_RFCOMM_DEBUG(1, ">> DM Sent"); - - /* No free channel in the multiplexer - decline the SABM by sending a DM frame */ - RFCOMM_SendFrame(FrameAddress->DLCI, true, (RFCOMM_Frame_DM | FRAME_POLL_FINAL), 0, NULL, Channel); -} - -static void RFCOMM_ProcessUA(const RFCOMM_Address_t* const FrameAddress, Bluetooth_Channel_t* const Channel) -{ - BT_RFCOMM_DEBUG(1, "<< UA Received"); - BT_RFCOMM_DEBUG(2, "-- DLCI 0x%02X", FrameAddress->DLCI); + return NULL; } -static void RFCOMM_ProcessUIH(const RFCOMM_Address_t* const FrameAddress, const uint16_t FrameLength, - const uint8_t* FrameData, Bluetooth_Channel_t* const Channel) +RFCOMM_Channel_t* RFCOMM_GetChannelData(const uint8_t DLCI) { - BT_RFCOMM_DEBUG(1, "<< UIH Received"); - BT_RFCOMM_DEBUG(2, "-- DLCI 0x%02X", FrameAddress->DLCI); - BT_RFCOMM_DEBUG(2, "-- Length 0x%02X", FrameLength); - - if (FrameAddress->DLCI == RFCOMM_CONTROL_DLCI) + /* Search through the RFCOMM channel list, looking for the specified channel */ + for (uint8_t i = 0; i < RFCOMM_MAX_OPEN_CHANNELS; i++) { - RFCOMM_ProcessControlCommand(FrameData, Channel); - return; + RFCOMM_Channel_t* CurrRFCOMMChannel = &RFCOMM_Channels[i]; + + /* If the current non-closed channel's DLCI matches the search DLCI, return it to the caller */ + if ((CurrRFCOMMChannel->State != RFCOMM_Channel_Closed) && (CurrRFCOMMChannel->DLCI == DLCI)) + return CurrRFCOMMChannel; } - // TODO: Handle regular channel data here + /* Channel not found in the channel state table, return failure */ + return NULL; } -static void RFCOMM_ProcessControlCommand(const uint8_t* Command, Bluetooth_Channel_t* const Channel) +uint16_t RFCOMM_GetVariableFieldValue(const uint8_t** BufferPos) { - const RFCOMM_Command_t* CommandHeader = (const RFCOMM_Command_t*)Command; - const uint8_t* CommandData = (const uint8_t*)Command + sizeof(RFCOMM_Command_t); + uint8_t FirstOctet; + uint8_t SecondOctet = 0; + + FirstOctet = **BufferPos; + (*BufferPos)++; - switch (CommandHeader->Command) + /* If the field size is more than a single byte, fetch the next byte in the variable length field */ + if (!(FirstOctet & 0x01)) { - case RFCOMM_Control_Test: - BT_RFCOMM_DEBUG(1, "<< TEST Command"); - break; - case RFCOMM_Control_FlowControlEnable: - BT_RFCOMM_DEBUG(1, "<< FCE Command"); - break; - case RFCOMM_Control_FlowControlDisable: - BT_RFCOMM_DEBUG(1, "<< FCD Command"); - break; - case RFCOMM_Control_ModemStatus: - BT_RFCOMM_DEBUG(1, "<< MS Command"); - break; - case RFCOMM_Control_RemotePortNegotiation: - BT_RFCOMM_DEBUG(1, "<< RPN Command"); - break; - case RFCOMM_Control_RemoteLineStatus: - BT_RFCOMM_DEBUG(1, "<< RLS Command"); - break; - case RFCOMM_Control_DLCParameterNegotiation: - BT_RFCOMM_DEBUG(1, "<< DPN Command"); - - // TODO - Set channel state -// RFCOMM_Channel_t* RFCOMMChannel = RFCOMM_GetChannelData( -// RFCOMMChannel->Configured = true; - - // TODO - send ACK/NAK response - break; - default: - BT_RFCOMM_DEBUG(1, "<< Unknown Command"); + SecondOctet = **BufferPos; + (*BufferPos)++; - struct - { - RFCOMM_Command_t Header; - RFCOMM_Command_t Command; - } Response = - { - .Header = (RFCOMM_Command_t) - { - .Command = RFCOMM_Control_NonSupportedCommand, - .CR = true, - .EA = true, - }, - - .Command = *CommandHeader, - }; - - RFCOMM_SendFrame(RFCOMM_CONTROL_DLCI, false, RFCOMM_Frame_UIH, sizeof(RFCOMM_Command_t), &Response, Channel); - break; + /* Discard any remaining bytes in the variable length field that won't fit in the return value */ + while (!(**BufferPos & 0x01)) + (*BufferPos)++; } + + /* Bit-shift the bytes that comprise the variable length field so that they form a single integer */ + return (((uint16_t)SecondOctet << 7) | FirstOctet >> 1); } -static void RFCOMM_SendFrame(const uint8_t DLCI, const bool CommandResponse, const uint8_t Control, const uint16_t DataLen, - const void* Data, Bluetooth_Channel_t* const Channel) +void RFCOMM_SendFrame(const uint8_t DLCI, + const bool CommandResponse, + const uint8_t Control, + const uint16_t DataLen, + const void* Data, + Bluetooth_Channel_t* const ACLChannel) { struct { @@ -241,72 +281,137 @@ static void RFCOMM_SendFrame(const uint8_t DLCI, const bool CommandResponse, con uint8_t Data[DataLen]; uint8_t FCS; } ResponsePacket; - + /* Set the frame header values to the specified address and frame type */ ResponsePacket.FrameHeader.Control = Control; - ResponsePacket.FrameHeader.Address = (RFCOMM_Address_t) - { - .EA = true, - .CR = CommandResponse, - .DLCI = DLCI, - }; - + ResponsePacket.FrameHeader.Address = (RFCOMM_Address_t){.DLCI = DLCI, .EA = true, .CR = CommandResponse}; + /* Set the lower 7 bits of the packet length */ ResponsePacket.Size[0] = (DataLen << 1); - + /* Terminate the size field if size is 7 bits or lower, otherwise set the upper 8 bits of the length */ if (DataLen < 128) ResponsePacket.Size[0] |= 0x01; else ResponsePacket.Size[1] = (DataLen >> 7); - + /* Copy over the packet data from the source buffer to the response packet buffer */ memcpy(ResponsePacket.Data, Data, DataLen); - + /* Determine the length of the frame which is to be used to calculate the CRC value */ uint8_t CRCLength = sizeof(ResponsePacket.FrameHeader); /* UIH frames do not have the CRC calculated on the Size field in the response, all other frames do */ if ((Control & ~FRAME_POLL_FINAL) != RFCOMM_Frame_UIH) CRCLength += sizeof(ResponsePacket.Size); - + /* Calculate the frame checksum from the appropriate fields */ ResponsePacket.FCS = RFCOMM_GetFCSValue(&ResponsePacket, CRCLength); /* Send the completed response packet to the sender */ - Bluetooth_SendPacket(&ResponsePacket, sizeof(ResponsePacket), Channel); + Bluetooth_SendPacket(&ResponsePacket, sizeof(ResponsePacket), ACLChannel); } -static uint8_t RFCOMM_GetFCSValue(const void* FrameStart, uint8_t Length) +static uint8_t RFCOMM_GetFCSValue(const void* FrameStart, + uint8_t Length) { uint8_t FCS = 0xFF; - + + /* Calculate new Frame CRC value via the given data bytes and the CRC table */ for (uint8_t i = 0; i < Length; i++) - FCS = pgm_read_byte(&CRC8_Table[FCS ^ ((uint8_t*)FrameStart)[i]]); + FCS = pgm_read_byte(&CRC8_Table[FCS ^ ((const uint8_t*)FrameStart)[i]]); return ~FCS; } -static uint16_t RFCOMM_GetFrameDataLength(const uint8_t* const BufferPos) +static void RFCOMM_ProcessDM(const RFCOMM_Address_t* const FrameAddress, + Bluetooth_Channel_t* const ACLChannel) { - uint8_t FirstOctet = BufferPos[0]; - uint8_t SecondOctet = 0; - - if (!(FirstOctet & 0x01)) - SecondOctet = BufferPos[1]; - - return (((uint16_t)SecondOctet << 7) | FirstOctet >> 1); + BT_RFCOMM_DEBUG(1, "<< DM Received"); + BT_RFCOMM_DEBUG(2, "-- DLCI 0x%02X", FrameAddress->DLCI); } -RFCOMM_Channel_t* RFCOMM_GetChannelData(const uint8_t DLCI) +static void RFCOMM_ProcessDISC(const RFCOMM_Address_t* const FrameAddress, + Bluetooth_Channel_t* const ACLChannel) { - for (uint8_t i = 0; i < RFCOMM_MAX_OPEN_CHANNELS; i++) + BT_RFCOMM_DEBUG(1, "<< DISC Received"); + BT_RFCOMM_DEBUG(2, "-- DLCI 0x%02X", FrameAddress->DLCI); + + RFCOMM_Channel_t* RFCOMMChannel = RFCOMM_GetChannelData(FrameAddress->DLCI); + + /* If the requested channel is currently open, destroy it */ + if (RFCOMMChannel != NULL) + RFCOMMChannel->State = RFCOMM_Channel_Closed; + + BT_RFCOMM_DEBUG(1, ">> UA Sent"); + RFCOMM_SendFrame(FrameAddress->DLCI, true, (RFCOMM_Frame_UA | FRAME_POLL_FINAL), 0, NULL, ACLChannel); +} + +static void RFCOMM_ProcessSABM(const RFCOMM_Address_t* const FrameAddress, + Bluetooth_Channel_t* const ACLChannel) +{ + BT_RFCOMM_DEBUG(1, "<< SABM Received"); + BT_RFCOMM_DEBUG(2, "-- DLCI 0x%02X", FrameAddress->DLCI); + + if (FrameAddress->DLCI == RFCOMM_CONTROL_DLCI) { - RFCOMM_Channel_t* CurrRFCOMMChannel = &RFCOMM_Channels[i]; - - if (CurrRFCOMMChannel->DLCI == DLCI) - return CurrRFCOMMChannel; + BT_RFCOMM_DEBUG(1, ">> UA Sent"); + + /* Free channel found, or request was to the control channel - accept SABM by sending a UA frame */ + RFCOMM_SendFrame(FrameAddress->DLCI, true, (RFCOMM_Frame_UA | FRAME_POLL_FINAL), 0, NULL, ACLChannel); + + return; } - - return NULL; + + /* Find the existing channel's entry in the channel table */ + RFCOMM_Channel_t* RFCOMMChannel = RFCOMM_GetChannelData(FrameAddress->DLCI); + + /* Existing entry not found, create a new entry for the channel */ + if (RFCOMMChannel == NULL) + RFCOMMChannel = RFCOMM_GetFreeChannelEntry(FrameAddress->DLCI); + + /* If space was found in the channel table for the new channel, ACK the request */ + if (RFCOMMChannel != NULL) + { + BT_RFCOMM_DEBUG(1, ">> UA Sent"); + + /* Free channel found, or request was to the control channel - accept SABM by sending a UA frame */ + RFCOMM_SendFrame(FrameAddress->DLCI, true, (RFCOMM_Frame_UA | FRAME_POLL_FINAL), 0, NULL, ACLChannel); + } + else + { + BT_RFCOMM_DEBUG(1, ">> DM Sent"); + + /* No free channel in the multiplexer - decline the SABM by sending a DM frame */ + RFCOMM_SendFrame(FrameAddress->DLCI, true, (RFCOMM_Frame_DM | FRAME_POLL_FINAL), 0, NULL, ACLChannel); + } +} + +static void RFCOMM_ProcessUA(const RFCOMM_Address_t* const FrameAddress, + Bluetooth_Channel_t* const ACLChannel) +{ + BT_RFCOMM_DEBUG(1, "<< UA Received"); + BT_RFCOMM_DEBUG(2, "-- DLCI 0x%02X", FrameAddress->DLCI); +} + +static void RFCOMM_ProcessUIH(const RFCOMM_Address_t* const FrameAddress, + const uint16_t FrameLength, + const uint8_t* FrameData, + Bluetooth_Channel_t* const ACLChannel) +{ + if (FrameAddress->DLCI == RFCOMM_CONTROL_DLCI) + { + RFCOMM_ProcessControlCommand(FrameData, ACLChannel); + return; + } + + BT_RFCOMM_DEBUG(1, "<< UIH Received"); + BT_RFCOMM_DEBUG(2, "-- DLCI 0x%02X", FrameAddress->DLCI); + BT_RFCOMM_DEBUG(2, "-- Length 0x%02X", FrameLength); + + RFCOMM_Channel_t* RFCOMMChannel = RFCOMM_GetChannelData(FrameAddress->DLCI); + + if (RFCOMMChannel != NULL) + RFCOMM_DataReceived(RFCOMMChannel, FrameLength, FrameData); } +