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Add missing ATTR_NON_NULL_PTR_ARG and ATTR_ALWAYS_INLINE attributes to class driver...
[pub/lufa.git] / 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 e69a27e..46cc182 100644 (file)
--- a/Demos/Host/Incomplete/BluetoothHost/Lib/RFCOMM.c
+++ b/Demos/Host/Incomplete/BluetoothHost/Lib/RFCOMM.c
@@ -69,77 +69,134 @@ void RFCOMM_Initialize(void)
 
 void RFCOMM_ProcessPacket(void* Data, Bluetooth_Channel_t* const Channel)
 {
 
 void RFCOMM_ProcessPacket(void* Data, Bluetooth_Channel_t* const Channel)
 {
-       const RFCOMM_Header_t* FrameHeader = (const RFCOMM_Header_t*)Data;
+       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);
+
+       FrameData += (FrameDataLen < 128) ? 1 : 2;
        
        /* Decode the RFCOMM frame type from the header */
        switch (FrameHeader->Control & ~FRAME_POLL_FINAL)
        {
        
        /* Decode the RFCOMM frame type from the header */
        switch (FrameHeader->Control & ~FRAME_POLL_FINAL)
        {
-               case RFCOMM_Frame_SABM:
-                       RFCOMM_ProcessSABM(FrameHeader, Channel);
-                       break;
-               case RFCOMM_Frame_UA:
-                       RFCOMM_ProcessUA(FrameHeader, Channel);
-                       break;
                case RFCOMM_Frame_DM:
                case RFCOMM_Frame_DM:
-                       RFCOMM_ProcessDM(FrameHeader, Channel);
+                       RFCOMM_ProcessDM(&FrameHeader->Address, Channel);
                        break;
                case RFCOMM_Frame_DISC:
                        break;
                case RFCOMM_Frame_DISC:
-                       RFCOMM_ProcessDISC(FrameHeader, Channel);
+                       RFCOMM_ProcessDISC(&FrameHeader->Address, Channel);
+                       break;
+               case RFCOMM_Frame_SABM:
+                       RFCOMM_ProcessSABM(&FrameHeader->Address, Channel);
+                       break;
+               case RFCOMM_Frame_UA:
+                       RFCOMM_ProcessUA(&FrameHeader->Address, Channel);
                        break;
                case RFCOMM_Frame_UIH:
                        break;
                case RFCOMM_Frame_UIH:
-                       RFCOMM_ProcessUIH(FrameHeader, Channel);
+                       RFCOMM_ProcessUIH(&FrameHeader->Address, FrameDataLen, FrameData, Channel);
                        break;
                default:
                        break;
                default:
-                       BT_RFCOMM_DEBUG(1, "<< Unknown Frame Type");
+                       BT_RFCOMM_DEBUG(1, "<< Unknown Frame Received");
                        break;
        }
 }
 
                        break;
        }
 }
 
-static void RFCOMM_ProcessSABM(const RFCOMM_Header_t* const FrameHeader, Bluetooth_Channel_t* const Channel)
+static void RFCOMM_ProcessDM(const RFCOMM_Address_t* const FrameAddress, Bluetooth_Channel_t* const Channel)
 {
 {
-       BT_RFCOMM_DEBUG(1, "<< SABM Received");
-       BT_RFCOMM_DEBUG(2, "-- DLCI 0x%02X", FrameHeader->Address.DLCI);
-       
-       // TODO: Reset channel send/receive state here
-       
-       BT_RFCOMM_DEBUG(1, ">> UA Sent");
-       RFCOMM_SendFrame(FrameHeader->Address.DLCI, true, (RFCOMM_Frame_UA | FRAME_POLL_FINAL), 0, NULL, Channel);
+       BT_RFCOMM_DEBUG(1, "<< DM Received");
+       BT_RFCOMM_DEBUG(2, "-- DLCI 0x%02X", FrameAddress->DLCI);
 }
 
 }
 
-static void RFCOMM_ProcessUA(const RFCOMM_Header_t* const FrameHeader, Bluetooth_Channel_t* const Channel)
+static void RFCOMM_ProcessDISC(const RFCOMM_Address_t* const FrameAddress, Bluetooth_Channel_t* const Channel)
 {
 {
-       const uint8_t* CurrBufferPos = ((const uint8_t*)FrameHeader + sizeof(RFCOMM_Header_t));
+       BT_RFCOMM_DEBUG(1, "<< DISC Received");
+       BT_RFCOMM_DEBUG(2, "-- DLCI 0x%02X", FrameAddress->DLCI);
 
 
-       BT_RFCOMM_DEBUG(1, "<< UA Received");
-       BT_RFCOMM_DEBUG(2, "-- Address 0x%02X", FrameHeader->Address);
+       // TODO: Close down connection
+
+       BT_RFCOMM_DEBUG(1, ">> UA Sent");
+       RFCOMM_SendFrame(FrameAddress->DLCI, true, (RFCOMM_Frame_UA | FRAME_POLL_FINAL), 0, NULL, Channel);
 }
 
 }
 
-static void RFCOMM_ProcessDM(const RFCOMM_Header_t* const FrameHeader, Bluetooth_Channel_t* const Channel)
+static void RFCOMM_ProcessSABM(const RFCOMM_Address_t* const FrameAddress, Bluetooth_Channel_t* const Channel)
 {
 {
-       const uint8_t* CurrBufferPos = ((const uint8_t*)FrameHeader + sizeof(RFCOMM_Header_t));
+       BT_RFCOMM_DEBUG(1, "<< SABM Received");
+       BT_RFCOMM_DEBUG(2, "-- DLCI 0x%02X", FrameAddress->DLCI);
+       
+       // TODO: Reset channel send/receive state
+       
+       BT_RFCOMM_DEBUG(1, ">> UA Sent");
+       RFCOMM_SendFrame(FrameAddress->DLCI, true, (RFCOMM_Frame_UA | FRAME_POLL_FINAL), 0, NULL, Channel);
+}
 
 
-       BT_RFCOMM_DEBUG(1, "<< DM Received");
-       BT_RFCOMM_DEBUG(2, "-- Address 0x%02X", FrameHeader->Address);
+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);
 }
 
 }
 
-static void RFCOMM_ProcessDISC(const RFCOMM_Header_t* const FrameHeader, Bluetooth_Channel_t* const Channel)
+static void RFCOMM_ProcessUIH(const RFCOMM_Address_t* const FrameAddress, const uint16_t FrameLength, 
+                              const uint8_t* FrameData, Bluetooth_Channel_t* const Channel)
 {
 {
-       const uint8_t* CurrBufferPos = ((const uint8_t*)FrameHeader + sizeof(RFCOMM_Header_t));
+       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)
+       {
+               RFCOMM_ProcessControlCommand((const RFCOMM_Command_t*)FrameData, Channel);
+               return;
+       }
 
 
-       BT_RFCOMM_DEBUG(1, "<< DISC Received");
-       BT_RFCOMM_DEBUG(2, "-- Address 0x%02X", FrameHeader->Address);
+       // TODO: Handle regular channel data here
 }
 
 }
 
-static void RFCOMM_ProcessUIH(const RFCOMM_Header_t* const FrameHeader, Bluetooth_Channel_t* const Channel)
+static void RFCOMM_ProcessControlCommand(const RFCOMM_Command_t* CommandHeader, Bluetooth_Channel_t* const Channel)
 {
 {
-       const uint8_t* CurrBufferPos = ((const uint8_t*)FrameHeader + sizeof(RFCOMM_Header_t));
+       switch (CommandHeader->Command)
+       {
+               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");
+                       
+                       struct
+                       {
+                               RFCOMM_Command_t Header;
+                               RFCOMM_Command_t Command;
+                       } Response =
+                               {
+                                       .Header = (RFCOMM_Command_t)
+                                       {
+                                               .Command = RFCOMM_Control_NonSupportedCommand,
+                                               .CR      = true,
+                                               .EA      = true,
+                                       },
+                                       
+                                       .Command = *CommandHeader,
+                               };
 
 
-       BT_RFCOMM_DEBUG(1, "<< UIH Received");
-       BT_RFCOMM_DEBUG(2, "-- Address 0x%02X", FrameHeader->Address);
+                       RFCOMM_SendFrame(RFCOMM_CONTROL_DLCI, false, RFCOMM_Frame_UIH, sizeof(RFCOMM_Command_t), &Response, Channel);                   
+                       break;
+       }
 }
 
 }
 
-static void RFCOMM_SendFrame(const uint8_t DLCI, const bool CommandResponse, const uint8_t Control, const uint16_t DataLen, const uint8_t* Data,
-                             Bluetooth_Channel_t* const Channel)
+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)
 {
        struct
        {
 {
        struct
        {
@@ -170,38 +227,38 @@ static void RFCOMM_SendFrame(const uint8_t DLCI, const bool CommandResponse, con
        /* Copy over the packet data from the source buffer to the response packet buffer */
        memcpy(ResponsePacket.Data, Data, DataLen);
        
        /* 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);
+
+       if ((Control & ~FRAME_POLL_FINAL) != RFCOMM_Frame_UIH)
+         CRCLength += sizeof(ResponsePacket.Size);
+       
        /* Calculate the frame checksum from the appropriate fields */
        /* Calculate the frame checksum from the appropriate fields */
-       if ((Control & ~FRAME_POLL_FINAL) == RFCOMM_Frame_UIH)
-         ResponsePacket.FCS = RFCOMM_GetFCSValue(&ResponsePacket, sizeof(ResponsePacket.FrameHeader));
-       else
-         ResponsePacket.FCS = RFCOMM_GetFCSValue(&ResponsePacket, sizeof(ResponsePacket.FrameHeader) + sizeof(ResponsePacket.Size));
+       ResponsePacket.FCS = RFCOMM_GetFCSValue(&ResponsePacket, CRCLength);
 
        /* Send the completed response packet to the sender */
        Bluetooth_SendPacket(&ResponsePacket, sizeof(ResponsePacket), Channel);
 }
 
 
        /* Send the completed response packet to the sender */
        Bluetooth_SendPacket(&ResponsePacket, sizeof(ResponsePacket), Channel);
 }
 
-static uint8_t RFCOMM_GetFCSValue(const void* FrameStart, uint16_t Length)
+static uint8_t RFCOMM_GetFCSValue(const void* FrameStart, uint8_t Length)
 {
        const uint8_t* CurrPos = FrameStart;
        uint8_t        FCS     = 0xFF;
        
 {
        const uint8_t* CurrPos = FrameStart;
        uint8_t        FCS     = 0xFF;
        
-       while (Length--)
-       {
-               FCS = pgm_read_byte(&CRC8_Table[FCS ^ *CurrPos]);
-               CurrPos++;
-       }
+       for (uint8_t i = 0; i < Length; i++)
+         FCS = pgm_read_byte(&CRC8_Table[FCS ^ *(CurrPos++)]);
 
 
-       return (0xFF - FCS);
+       return ~FCS;
 }
 
 }
 
-static uint16_t RFCOMM_GetFrameDataLength(const uint8_t** BufferPos)
+static uint16_t RFCOMM_GetFrameDataLength(const uint8_t* const BufferPos)
 {
 {
-       uint8_t FirstOctet  = *((*BufferPos)++);
+       uint8_t FirstOctet  = BufferPos[0];
        uint8_t SecondOctet = 0;
        
        if (!(FirstOctet & 0x01))
        uint8_t SecondOctet = 0;
        
        if (!(FirstOctet & 0x01))
-         SecondOctet = *((*BufferPos)++);
+         SecondOctet = BufferPos[1];
        
        
-       return (((uint16_t)SecondOctet << 7) | (FirstOctet >> 1));
+       return (((uint16_t)SecondOctet << 7) | FirstOctet >> 1);
 }
 
 }
 
Lightweight USB Framework for AVRs