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More improvements to the incomplete BluetoothHost demo - add Disconnection Event...
[pub/lufa.git] / Demos / Host / Incomplete / BluetoothHost / Lib / BluetoothHCICommands.c
diff --git a/Demos/Host/Incomplete/BluetoothHost/Lib/BluetoothHCICommands.c b/Demos/Host/Incomplete/BluetoothHost/Lib/BluetoothHCICommands.c
index ddd159e..dd2a3e5 100644 (file)
--- a/Demos/Host/Incomplete/BluetoothHost/Lib/BluetoothHCICommands.c
+++ b/Demos/Host/Incomplete/BluetoothHost/Lib/BluetoothHCICommands.c
@@ -1,21 +1,21 @@
 /*\r
              LUFA Library\r
 /*\r
              LUFA Library\r
-     Copyright (C) Dean Camera, 2009.\r
+     Copyright (C) Dean Camera, 2010.\r
               \r
   dean [at] fourwalledcubicle [dot] com\r
       www.fourwalledcubicle.com\r
 */\r
 \r
 /*\r
               \r
   dean [at] fourwalledcubicle [dot] com\r
       www.fourwalledcubicle.com\r
 */\r
 \r
 /*\r
-  Copyright 2009  Dean Camera (dean [at] fourwalledcubicle [dot] com)\r
-\r
-  Permission to use, copy, modify, and distribute this software\r
-  and its documentation for any purpose and without fee is hereby\r
-  granted, provided that the above copyright notice appear in all\r
-  copies and that both that the copyright notice and this\r
-  permission notice and warranty disclaimer appear in supporting\r
-  documentation, and that the name of the author not be used in\r
-  advertising or publicity pertaining to distribution of the\r
+  Copyright 2010  Dean Camera (dean [at] fourwalledcubicle [dot] com)\r
+\r
+  Permission to use, copy, modify, distribute, and sell this \r
+  software and its documentation for any purpose is hereby granted\r
+  without fee, provided that the above copyright notice appear in \r
+  all copies and that both that the copyright notice and this\r
+  permission notice and warranty disclaimer appear in supporting \r
+  documentation, and that the name of the author not be used in \r
+  advertising or publicity pertaining to distribution of the \r
   software without specific, written prior permission.\r
 \r
   The author disclaim all warranties with regard to this\r
   software without specific, written prior permission.\r
 \r
   The author disclaim all warranties with regard to this\r
@@ -30,137 +30,157 @@
 \r
 #include "BluetoothHCICommands.h"\r
 \r
 \r
 #include "BluetoothHCICommands.h"\r
 \r
-static   Bluetooth_HCICommand_Header_t HCICommandHeader;\r
-static   Bluetooth_HCIEvent_Header_t   HCIEventHeader;\r
+static Bluetooth_HCICommand_Header_t HCICommandHeader;\r
 \r
 \r
-         uint8_t                       Bluetooth_HCIProcessingState;\r
-static   uint8_t                       Bluetooth_TempDeviceAddress[6];\r
+       uint8_t                       Bluetooth_HCIProcessingState;\r
+static uint8_t                       Bluetooth_HCINextState;\r
+static uint8_t                       Bluetooth_TempDeviceAddress[6];\r
 \r
 \r
-static uint8_t Bluetooth_SendHCICommand(void* Parameters, uint8_t ParamLength)\r
+static uint8_t Bluetooth_SendHCICommand(void* Parameters, uint16_t ParameterLength)\r
 {\r
 {\r
+       /* Need to reserve the amount of bytes given in the header for the complete payload */\r
        uint8_t CommandBuffer[sizeof(HCICommandHeader) + HCICommandHeader.ParameterLength];\r
 \r
        USB_ControlRequest = (USB_Request_Header_t)\r
                {\r
        uint8_t CommandBuffer[sizeof(HCICommandHeader) + HCICommandHeader.ParameterLength];\r
 \r
        USB_ControlRequest = (USB_Request_Header_t)\r
                {\r
-                       bmRequestType: (REQDIR_HOSTTODEVICE | REQTYPE_CLASS | REQREC_DEVICE),\r
-                       bRequest:      0,\r
-                       wValue:        0,\r
-                       wIndex:        0,\r
-                       wLength:       sizeof(CommandBuffer)\r
+                       .bmRequestType = (REQDIR_HOSTTODEVICE | REQTYPE_CLASS | REQREC_DEVICE),\r
+                       .bRequest      = 0,\r
+                       .wValue        = 0,\r
+                       .wIndex        = 0,\r
+                       .wLength       = sizeof(CommandBuffer)\r
                };\r
                };\r
-               \r
-       memset(CommandBuffer, 0x00, sizeof(CommandBuffer));\r
+\r
+       /* Copy over the HCI command header to the allocated buffer */\r
        memcpy(CommandBuffer, &HCICommandHeader, sizeof(HCICommandHeader));\r
        \r
        memcpy(CommandBuffer, &HCICommandHeader, sizeof(HCICommandHeader));\r
        \r
-       if (ParamLength)\r
-         memcpy(&CommandBuffer[sizeof(HCICommandHeader)], Parameters, ParamLength);\r
+       /* Zero out the parameter section of the response to ensure that any padding bytes do not expose private RAM contents */\r
+       memset(&CommandBuffer[sizeof(HCICommandHeader)], 0x00, HCICommandHeader.ParameterLength);\r
 \r
 \r
+       /* Copy over the command parameters (if any) to the command buffer - note, the number of actual source parameter bytes\r
+          may differ to those in the header; any difference in length is filled with 0x00 padding bytes */\r
+       memcpy(&CommandBuffer[sizeof(HCICommandHeader)], Parameters, ParameterLength);\r
+       \r
        Pipe_SelectPipe(PIPE_CONTROLPIPE);\r
        Pipe_SelectPipe(PIPE_CONTROLPIPE);\r
-\r
        return USB_Host_SendControlRequest(CommandBuffer);\r
 }\r
 \r
        return USB_Host_SendControlRequest(CommandBuffer);\r
 }\r
 \r
-static bool Bluetooth_GetNextHCIEventHeader(void)\r
-{\r
-       Pipe_SelectPipe(BLUETOOTH_EVENTS_PIPE);\r
-       Pipe_Unfreeze();\r
-       \r
-       if (!(Pipe_IsReadWriteAllowed()))\r
-       {\r
-               Pipe_Freeze();\r
-               return false;\r
-       }\r
-         \r
-       Pipe_Read_Stream_LE(&HCIEventHeader, sizeof(HCIEventHeader));\r
-         \r
-       Pipe_Freeze();\r
-\r
-       return true;\r
-}\r
-\r
-static void Bluetooth_DiscardRemainingHCIEventParameters(void)\r
-{\r
-       Pipe_SelectPipe(BLUETOOTH_EVENTS_PIPE);\r
-       \r
-       Pipe_Unfreeze();\r
-       Pipe_Discard_Stream(HCIEventHeader.ParameterLength);\r
-       Pipe_ClearIN();\r
-       Pipe_Freeze();\r
-}\r
-\r
 void Bluetooth_ProcessHCICommands(void)\r
 {\r
 void Bluetooth_ProcessHCICommands(void)\r
 {\r
-       uint8_t ErrorCode;\r
-\r
        switch (Bluetooth_HCIProcessingState)\r
        {\r
        switch (Bluetooth_HCIProcessingState)\r
        {\r
-               case Bluetooth_Init:\r
+               case Bluetooth_ProcessEvents:\r
                        Pipe_SelectPipe(BLUETOOTH_EVENTS_PIPE);\r
                        Pipe_SelectPipe(BLUETOOTH_EVENTS_PIPE);\r
+                       Pipe_Unfreeze();\r
                        \r
                        \r
-                       memset(&Bluetooth_Connection, 0x00, sizeof(Bluetooth_Connection));\r
-                                                          \r
-                       Bluetooth_HCIProcessingState = Bluetooth_Init_Reset; \r
-                       break;\r
-               case Bluetooth_Init_Reset:\r
-                       HCICommandHeader = (Bluetooth_HCICommand_Header_t)\r
+                       if (Pipe_IsReadWriteAllowed())\r
                        {\r
                        {\r
-                               OpCode: {OGF: OGF_CTRLR_BASEBAND, OCF: OCF_CTRLR_BASEBAND_RESET},\r
-                               ParameterLength: 0,\r
-                       };\r
-                       \r
-                       BT_DEBUG("(HCI) Enter State: Bluetooth_Init_Reset", NULL);\r
+                               Bluetooth_HCIEvent_Header_t HCIEventHeader;\r
 \r
 \r
-                       ErrorCode = Bluetooth_SendHCICommand(NULL, 0);\r
+                               /* Read in the event header to fetch the event code and payload length */\r
+                               Pipe_Read_Stream_LE(&HCIEventHeader, sizeof(HCIEventHeader));\r
+                               \r
+                               /* Create a temporary buffer for the event parameters */\r
+                               uint8_t EventParams[HCIEventHeader.ParameterLength];\r
 \r
 \r
-                       do\r
-                       {\r
-                               while (!(Bluetooth_GetNextHCIEventHeader()));\r
-                               Bluetooth_DiscardRemainingHCIEventParameters();\r
-                       } while (HCIEventHeader.EventCode != EVENT_COMMAND_COMPLETE);\r
+                               /* Read in the event parameters into the temporary buffer */\r
+                               Pipe_Read_Stream_LE(&EventParams, HCIEventHeader.ParameterLength);\r
+                               Pipe_ClearIN();\r
 \r
 \r
-                       Bluetooth_HCIProcessingState = Bluetooth_Init_ReadBufferSize;\r
+                               BT_HCI_DEBUG("Event Code: 0x%02X", HCIEventHeader.EventCode);\r
+                               \r
+                               switch (HCIEventHeader.EventCode)\r
+                               {\r
+                                       case EVENT_COMMAND_COMPLETE:\r
+                                               Bluetooth_HCIProcessingState = Bluetooth_HCINextState;\r
+\r
+                                               BT_HCI_DEBUG(">> Command Complete (Opcode 0x%04x)", \r
+                                                        ((Bluetooth_HCIEvent_CommandComplete_t*)&EventParams)->Opcode);\r
+                                               break;\r
+                                       case EVENT_COMMAND_STATUS:\r
+                                               /* If the execution of a command failed, reset the stack */\r
+                                               if (((Bluetooth_HCIEvent_CommandStatus_t*)&EventParams)->Status)\r
+                                                 Bluetooth_HCIProcessingState = Bluetooth_Init;\r
+\r
+                                               BT_HCI_DEBUG(">> Command Status: 0x%02X",\r
+                                                        ((Bluetooth_HCIEvent_CommandStatus_t*)&EventParams)->Status);                                  \r
+                                               break;\r
+                                       case EVENT_CONNECTION_REQUEST:\r
+                                               /* Need to store the remote device's BT address in a temporary buffer for later use */\r
+                                               memcpy(Bluetooth_TempDeviceAddress,\r
+                                                      &((Bluetooth_HCIEvent_ConnectionRequest_t*)&EventParams)->RemoteAddress,\r
+                                                      sizeof(Bluetooth_TempDeviceAddress));\r
+                                       \r
+                                               /* Only accept the connection if it is a ACL (data) connection */\r
+                                               Bluetooth_HCIProcessingState = (Bluetooth_Connection.IsConnected ||\r
+                                                                              (((Bluetooth_HCIEvent_ConnectionRequest_t*)&EventParams)->LinkType != 0x01)) ?\r
+                                                                                                          Bluetooth_Conn_RejectConnection : Bluetooth_Conn_AcceptConnection;\r
+\r
+                                               BT_HCI_DEBUG(">> Connection Request from Device %02X:%02X:%02X:%02X:%02X:%02X",\r
+                                                                Bluetooth_TempDeviceAddress[5], Bluetooth_TempDeviceAddress[4], Bluetooth_TempDeviceAddress[3],\r
+                                                                Bluetooth_TempDeviceAddress[2], Bluetooth_TempDeviceAddress[1], Bluetooth_TempDeviceAddress[0]);\r
+                                               break;\r
+                                       case EVENT_PIN_CODE_REQUEST:\r
+                                               /* Need to store the remote device's BT address in a temporary buffer for later use */\r
+                                               memcpy(Bluetooth_TempDeviceAddress,\r
+                                                      &((Bluetooth_HCIEvent_PinCodeRequest_t*)&EventParams)->RemoteAddress,\r
+                                                      sizeof(Bluetooth_TempDeviceAddress));\r
+\r
+                                               Bluetooth_HCIProcessingState = Bluetooth_Conn_SendPINCode;\r
+\r
+                                               BT_HCI_DEBUG(">> PIN Request from Device %02X:%02X:%02X:%02X:%02X:%02X", \r
+                                                                Bluetooth_TempDeviceAddress[5], Bluetooth_TempDeviceAddress[4], Bluetooth_TempDeviceAddress[3],\r
+                                                                Bluetooth_TempDeviceAddress[2], Bluetooth_TempDeviceAddress[1], Bluetooth_TempDeviceAddress[0]);\r
+                                               break;\r
+                                       case EVENT_CONNECTION_COMPLETE:\r
+                                               /* Need to store the remote device's BT address in a temporary buffer for later use */\r
+                                               memcpy(Bluetooth_Connection.RemoteAddress,\r
+                                                      &((Bluetooth_HCIEvent_ConnectionComplete_t*)&EventParams)->RemoteAddress,\r
+                                                      sizeof(Bluetooth_TempDeviceAddress));\r
+\r
+                                               /* Store the created connection handle and indicate that the connection has been established */\r
+                                               Bluetooth_Connection.ConnectionHandle = ((Bluetooth_HCIEvent_ConnectionComplete_t*)&EventParams)->ConnectionHandle;\r
+                                               Bluetooth_Connection.IsConnected      = true;\r
+\r
+                                               BT_HCI_DEBUG(">> Connection Complete to Device %02X:%02X:%02X:%02X:%02X:%02X, Handle 0x%04x", \r
+                                                                Bluetooth_Connection.RemoteAddress[5], Bluetooth_Connection.RemoteAddress[4],\r
+                                                                Bluetooth_Connection.RemoteAddress[3], Bluetooth_Connection.RemoteAddress[2],\r
+                                                                Bluetooth_Connection.RemoteAddress[1], Bluetooth_Connection.RemoteAddress[0],\r
+                                                                Bluetooth_Connection.ConnectionHandle);\r
+                                               break;\r
+                                       case EVENT_DISCONNECTION_COMPLETE:\r
+                                               BT_HCI_DEBUG(">> Disconnection Complete", NULL);\r
+\r
+                                               /* Device disconnected, indicate connection information no longer valid */\r
+                                               Bluetooth_Connection.IsConnected = false;\r
+                                               \r
+                                               Bluetooth_HCIProcessingState = Bluetooth_Init;\r
+                                               break;                                  \r
+                               }\r
+                       }\r
+                       \r
+                       Pipe_Freeze();\r
+                       \r
                        break;\r
                        break;\r
-               case Bluetooth_Init_ReadBufferSize:\r
-                       HCICommandHeader = (Bluetooth_HCICommand_Header_t)\r
-                       {\r
-                               OpCode: {OGF: OGF_CTRLR_INFORMATIONAL, OCF: OGF_CTRLR_INFORMATIONAL_READBUFFERSIZE},\r
-                               ParameterLength: 0,\r
-                       };\r
-               \r
-                       BT_DEBUG("(HCI) Enter State: Bluetooth_Init_ReadBufferSize", NULL);\r
-\r
-                       ErrorCode = Bluetooth_SendHCICommand(NULL, 0);\r
-\r
-                       do\r
-                       {\r
-                               while (!(Bluetooth_GetNextHCIEventHeader()));\r
-                               Bluetooth_DiscardRemainingHCIEventParameters();\r
-                       } while (HCIEventHeader.EventCode != EVENT_COMMAND_COMPLETE);\r
+               case Bluetooth_Init:\r
+                       /* Reset the connection information structure to destroy any previous connection state */\r
+                       memset(&Bluetooth_Connection, 0x00, sizeof(Bluetooth_Connection));\r
 \r
 \r
-                       Bluetooth_HCIProcessingState = Bluetooth_Init_SetEventMask;             \r
+                       Bluetooth_HCIProcessingState = Bluetooth_Init_Reset; \r
                        break;\r
                        break;\r
-               case Bluetooth_Init_SetEventMask:\r
+               case Bluetooth_Init_Reset:\r
                        HCICommandHeader = (Bluetooth_HCICommand_Header_t)\r
                        {\r
                        HCICommandHeader = (Bluetooth_HCICommand_Header_t)\r
                        {\r
-                               OpCode: {OGF: OGF_CTRLR_BASEBAND, OCF: OCF_CTRLR_BASEBAND_SET_EVENT_MASK},\r
-                               ParameterLength: 8,\r
+                               OpCode: {OGF: OGF_CTRLR_BASEBAND, OCF: OCF_CTRLR_BASEBAND_RESET},\r
+                               ParameterLength: 0,\r
                        };\r
                        };\r
-               \r
-                       BT_DEBUG("(HCI) Enter State: Bluetooth_Init_SetEventMask", NULL);\r
                        \r
                        \r
-                       uint8_t EventMask[8] = {0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF};\r
-                       ErrorCode = Bluetooth_SendHCICommand(&EventMask, 8);\r
-\r
-                       BT_DEBUG("(HCI) -- Event mask: 0x%02X%02X%02X%02X%02X%02X%02X%02X", EventMask[7], EventMask[6], EventMask[5], EventMask[4],\r
-                                                                                           EventMask[3], EventMask[2], EventMask[1], EventMask[0]);\r
-                       do\r
-                       {\r
-                               while (!(Bluetooth_GetNextHCIEventHeader()));\r
-                               Bluetooth_DiscardRemainingHCIEventParameters();\r
-                       } while (HCIEventHeader.EventCode != EVENT_COMMAND_COMPLETE);\r
-               \r
+                       BT_HCI_DEBUG("Enter State: Bluetooth_Init_Reset", NULL);\r
 \r
 \r
-                       Bluetooth_HCIProcessingState = Bluetooth_Init_SetLocalName;             \r
+                       /* Send the command to reset the bluetooth dongle controller */\r
+                       Bluetooth_SendHCICommand(NULL, 0);\r
+                       \r
+                       Bluetooth_HCINextState       = Bluetooth_Init_SetLocalName;\r
+                       Bluetooth_HCIProcessingState = Bluetooth_ProcessEvents;\r
                        break;\r
                case Bluetooth_Init_SetLocalName:\r
                        HCICommandHeader = (Bluetooth_HCICommand_Header_t)\r
                        break;\r
                case Bluetooth_Init_SetLocalName:\r
                        HCICommandHeader = (Bluetooth_HCICommand_Header_t)\r
@@ -169,18 +189,14 @@ void Bluetooth_ProcessHCICommands(void)
                                        ParameterLength: 248,\r
                                };\r
 \r
                                        ParameterLength: 248,\r
                                };\r
 \r
-                       BT_DEBUG("(HCI) Enter State: Bluetooth_Init_SetLocalName", NULL);\r
-                       BT_DEBUG("(HCI)  -- Name: %s", Bluetooth_DeviceConfiguration.Name);\r
+                       BT_HCI_DEBUG("Enter State: Bluetooth_Init_SetLocalName", NULL);\r
+                       BT_HCI_DEBUG("-- Name: %s", Bluetooth_DeviceConfiguration.Name);\r
 \r
 \r
-                       ErrorCode = Bluetooth_SendHCICommand(Bluetooth_DeviceConfiguration.Name, strlen(Bluetooth_DeviceConfiguration.Name));\r
-                       \r
-                       do\r
-                       {\r
-                               while (!(Bluetooth_GetNextHCIEventHeader()));\r
-                               Bluetooth_DiscardRemainingHCIEventParameters();\r
-                       } while (HCIEventHeader.EventCode != EVENT_COMMAND_COMPLETE);\r
-                       \r
-                       Bluetooth_HCIProcessingState = Bluetooth_Init_SetDeviceClass;\r
+                       /* Send the command to set the bluetooth dongle's name for other devices to see */\r
+                       Bluetooth_SendHCICommand(Bluetooth_DeviceConfiguration.Name, strlen(Bluetooth_DeviceConfiguration.Name));\r
+\r
+                       Bluetooth_HCINextState       = Bluetooth_Init_SetDeviceClass;\r
+                       Bluetooth_HCIProcessingState = Bluetooth_ProcessEvents;\r
                        break;\r
                case Bluetooth_Init_SetDeviceClass:\r
                        HCICommandHeader = (Bluetooth_HCICommand_Header_t)\r
                        break;\r
                case Bluetooth_Init_SetDeviceClass:\r
                        HCICommandHeader = (Bluetooth_HCICommand_Header_t)\r
@@ -189,17 +205,13 @@ void Bluetooth_ProcessHCICommands(void)
                                        ParameterLength: 3,\r
                                };\r
 \r
                                        ParameterLength: 3,\r
                                };\r
 \r
-                       BT_DEBUG("(HCI) Enter State: Bluetooth_Init_SetDeviceClass", NULL);\r
-\r
-                       ErrorCode = Bluetooth_SendHCICommand(&Bluetooth_DeviceConfiguration.Class, 3);\r
+                       BT_HCI_DEBUG("Enter State: Bluetooth_Init_SetDeviceClass", NULL);\r
 \r
 \r
-                       do\r
-                       {\r
-                               while (!(Bluetooth_GetNextHCIEventHeader()));\r
-                               Bluetooth_DiscardRemainingHCIEventParameters();\r
-                       } while (HCIEventHeader.EventCode != EVENT_COMMAND_COMPLETE);\r
+                       /* Send the command to set the class of the device for other devices to see */\r
+                       Bluetooth_SendHCICommand(&Bluetooth_DeviceConfiguration.Class, 3);\r
 \r
 \r
-                       Bluetooth_HCIProcessingState = Bluetooth_Init_WriteScanEnable;  \r
+                       Bluetooth_HCINextState       = Bluetooth_Init_WriteScanEnable;\r
+                       Bluetooth_HCIProcessingState = Bluetooth_ProcessEvents;\r
                        break;\r
                case Bluetooth_Init_WriteScanEnable:\r
                        HCICommandHeader = (Bluetooth_HCICommand_Header_t)\r
                        break;\r
                case Bluetooth_Init_WriteScanEnable:\r
                        HCICommandHeader = (Bluetooth_HCICommand_Header_t)\r
@@ -208,169 +220,78 @@ void Bluetooth_ProcessHCICommands(void)
                                ParameterLength: 1,\r
                        };\r
                        \r
                                ParameterLength: 1,\r
                        };\r
                        \r
-                       BT_DEBUG("(HCI) Enter State: Bluetooth_Init_WriteScanEnable", NULL);\r
+                       BT_HCI_DEBUG("Enter State: Bluetooth_Init_WriteScanEnable", NULL);\r
 \r
 \r
-                       uint8_t Interval = InquiryAndPageScans;\r
-                       ErrorCode = Bluetooth_SendHCICommand(&Interval, 1);\r
-\r
-                       do\r
-                       {\r
-                               while (!(Bluetooth_GetNextHCIEventHeader()));\r
-                               Bluetooth_DiscardRemainingHCIEventParameters();\r
-                       } while (HCIEventHeader.EventCode != EVENT_COMMAND_COMPLETE);\r
-\r
-                       Bluetooth_HCIProcessingState = Bluetooth_PrepareToProcessEvents;\r
-                       break;\r
-               case Bluetooth_PrepareToProcessEvents:\r
-                       BT_DEBUG("(HCI) Enter State: Bluetooth_ProcessEvents", NULL);\r
-\r
-                       Bluetooth_HCIProcessingState     = Bluetooth_ProcessEvents;\r
-                       break;\r
-               case Bluetooth_ProcessEvents:\r
-                       if (Bluetooth_GetNextHCIEventHeader())\r
-                       {\r
-                               BT_DEBUG("(HCI) Event Code: 0x%02X", HCIEventHeader.EventCode);\r
+                       uint8_t Interval = BT_SCANMODE_InquiryAndPageScans;\r
                        \r
                        \r
-                               if (HCIEventHeader.EventCode == EVENT_COMMAND_STATUS)\r
-                               {\r
-                                       Bluetooth_HCIEvent_CommandStatus_Header_t CommandStatusHeader;\r
-\r
-                                       Pipe_Read_Stream_LE(&CommandStatusHeader, sizeof(CommandStatusHeader));\r
-                                       HCIEventHeader.ParameterLength -= sizeof(CommandStatusHeader);\r
-                                                                               \r
-                                       BT_DEBUG("(HCI) >> Command status: 0x%02X", CommandStatusHeader.CommandStatus);\r
-                                       \r
-                                       if (CommandStatusHeader.CommandStatus)\r
-                                         Bluetooth_HCIProcessingState = Bluetooth_Init;\r
-                               }\r
-                               else if (HCIEventHeader.EventCode == EVENT_CONNECTION_REQUEST)\r
-                               {\r
-                                       Bluetooth_HCIEvent_ConnectionRequest_Header_t ConnectionRequestParams;\r
-                                       \r
-                                       Pipe_Read_Stream_LE(&ConnectionRequestParams, sizeof(ConnectionRequestParams));\r
-                                       HCIEventHeader.ParameterLength -= sizeof(ConnectionRequestParams);\r
-\r
-                                       BT_DEBUG("(HCI) >> Connection Request from device %02X:%02X:%02X:%02X:%02X:%02X",\r
-                                                ConnectionRequestParams.RemoteAddress[5], ConnectionRequestParams.RemoteAddress[4], \r
-                                                ConnectionRequestParams.RemoteAddress[3], ConnectionRequestParams.RemoteAddress[2], \r
-                                                ConnectionRequestParams.RemoteAddress[1], ConnectionRequestParams.RemoteAddress[0]);\r
-                                       BT_DEBUG("(HCI) -- Device Class: 0x%02X%04X", ConnectionRequestParams.ClassOfDevice_Service,\r
-                                                                                     ConnectionRequestParams.ClassOfDevice_MajorMinor);\r
-                                       BT_DEBUG("(HCI) -- Link Type: 0x%02x", ConnectionRequestParams.LinkType);\r
-                                       \r
-                                       memcpy(Bluetooth_TempDeviceAddress, ConnectionRequestParams.RemoteAddress,\r
-                                              sizeof(Bluetooth_TempDeviceAddress));\r
-\r
-                                       Bluetooth_HCIProcessingState = (Bluetooth_Connection.IsConnected) ? Bluetooth_Conn_RejectConnection :\r
-                                                                                                               Bluetooth_Conn_AcceptConnection;\r
-                               }\r
-                               else if (HCIEventHeader.EventCode == EVENT_DISCONNECTION_COMPLETE)\r
-                               {\r
-                                       BT_DEBUG("(HCI) >> Disconnection from device complete.", NULL);\r
-                                       Bluetooth_HCIProcessingState = Bluetooth_Init;\r
-                               }\r
-                               else if (HCIEventHeader.EventCode == EVENT_CONNECTION_COMPLETE)\r
-                               {\r
-                                       Bluetooth_HCIEvent_ConnectionComplete_Header_t ConnectionCompleteParams;\r
-                                       \r
-                                       Pipe_Read_Stream_LE(&ConnectionCompleteParams, sizeof(ConnectionCompleteParams));\r
-                                       HCIEventHeader.ParameterLength -= sizeof(ConnectionCompleteParams);\r
-\r
-                                       BT_DEBUG("(HCI) >> Connection to device complete.", NULL);\r
-                                       BT_DEBUG("(HCI) -- Status: %d", ConnectionCompleteParams.Status);\r
-                                       BT_DEBUG("(HCI) -- Handle: %d", ConnectionCompleteParams.ConnectionHandle);\r
-                                       \r
-                                       if (ConnectionCompleteParams.Status == 0x00)\r
-                                       {\r
-                                               memcpy(Bluetooth_Connection.DeviceAddress, ConnectionCompleteParams.RemoteAddress,\r
-                                                          sizeof(Bluetooth_Connection.DeviceAddress));\r
-                                               Bluetooth_Connection.ConnectionHandle = ConnectionCompleteParams.ConnectionHandle;\r
-                                               Bluetooth_Connection.IsConnected = true;\r
-                                       }\r
-                               }\r
-                               else if (HCIEventHeader.EventCode == EVENT_PIN_CODE_REQUEST)\r
-                               {\r
-                                       Pipe_Read_Stream_LE(&Bluetooth_TempDeviceAddress, sizeof(Bluetooth_TempDeviceAddress));\r
-                                       HCIEventHeader.ParameterLength -= sizeof(Bluetooth_TempDeviceAddress);\r
-\r
-                                       BT_DEBUG("(HCI) >> PIN code Request from device %02X:%02X:%02X:%02X:%02X:%02X", \r
-                                                        Bluetooth_TempDeviceAddress[5], Bluetooth_TempDeviceAddress[4], Bluetooth_TempDeviceAddress[3],\r
-                                                        Bluetooth_TempDeviceAddress[2], Bluetooth_TempDeviceAddress[1], Bluetooth_TempDeviceAddress[0]);\r
-                                                        \r
-                                       Bluetooth_HCIProcessingState = Bluetooth_Conn_SendPINCode;\r
-                               }\r
-                               \r
-                               BT_DEBUG("(HCI) -- Unread Event Param Length: %d", HCIEventHeader.ParameterLength);\r
-\r
-                               Bluetooth_DiscardRemainingHCIEventParameters();\r
-                       }\r
-\r
+                       /* Send the command to set the remote device scanning mode */\r
+                       Bluetooth_SendHCICommand(&Interval, 1);\r
+                       \r
+                       Bluetooth_HCINextState       = Bluetooth_ProcessEvents;\r
+                       Bluetooth_HCIProcessingState = Bluetooth_ProcessEvents;\r
                        break;\r
                case Bluetooth_Conn_AcceptConnection:\r
                        HCICommandHeader = (Bluetooth_HCICommand_Header_t)\r
                                {\r
                                        OpCode: {OGF: OGF_LINK_CONTROL, OCF: OCF_LINK_CONTROL_ACCEPT_CONNECTION_REQUEST},\r
                        break;\r
                case Bluetooth_Conn_AcceptConnection:\r
                        HCICommandHeader = (Bluetooth_HCICommand_Header_t)\r
                                {\r
                                        OpCode: {OGF: OGF_LINK_CONTROL, OCF: OCF_LINK_CONTROL_ACCEPT_CONNECTION_REQUEST},\r
-                                       ParameterLength: sizeof(Bluetooth_HCICommand_AcceptConnectionRequest_Params_t),\r
+                                       ParameterLength: sizeof(Bluetooth_HCICommand_AcceptConnectionRequest_t),\r
                                };\r
                        \r
                                };\r
                        \r
-                       BT_DEBUG("(HCI) Enter State: Bluetooth_Conn_AcceptConnection", NULL);\r
+                       BT_HCI_DEBUG("Enter State: Bluetooth_Conn_AcceptConnection", NULL);\r
 \r
 \r
-                       Bluetooth_HCICommand_AcceptConnectionRequest_Params_t AcceptConnectionParams;\r
-                                                        \r
+                       /* Copy over the temporary BT device address saved from the Connection Request event, indicate slave\r
+                          connection role */\r
+                       Bluetooth_HCICommand_AcceptConnectionRequest_t AcceptConnectionParams;\r
                        memcpy(AcceptConnectionParams.RemoteAddress, Bluetooth_TempDeviceAddress,\r
                        memcpy(AcceptConnectionParams.RemoteAddress, Bluetooth_TempDeviceAddress,\r
-                              sizeof(Bluetooth_TempDeviceAddress));\r
+                              sizeof(AcceptConnectionParams.RemoteAddress));\r
                        AcceptConnectionParams.SlaveRole = true;\r
 \r
                        AcceptConnectionParams.SlaveRole = true;\r
 \r
-                       Bluetooth_SendHCICommand(&AcceptConnectionParams, sizeof(AcceptConnectionParams));\r
+                       /* Send the command to accept the remote connection request */\r
+                       Bluetooth_SendHCICommand(&AcceptConnectionParams, sizeof(Bluetooth_HCICommand_AcceptConnectionRequest_t));\r
                        \r
                        \r
-                       Bluetooth_HCIProcessingState     = Bluetooth_PrepareToProcessEvents;\r
+                       Bluetooth_HCIProcessingState = Bluetooth_ProcessEvents;\r
                        break;\r
                case Bluetooth_Conn_RejectConnection:\r
                        HCICommandHeader = (Bluetooth_HCICommand_Header_t)\r
                                {\r
                        break;\r
                case Bluetooth_Conn_RejectConnection:\r
                        HCICommandHeader = (Bluetooth_HCICommand_Header_t)\r
                                {\r
-                                       OpCode: {OGF: OGF_LINK_CONTROL, OCF: OCF_LINK_CONTROL_ACCEPT_CONNECTION_REQUEST},\r
-                                       ParameterLength: sizeof(Bluetooth_HCICommand_RejectConnectionRequest_Params_t),\r
+                                       OpCode: {OGF: OGF_LINK_CONTROL, OCF: OCF_LINK_CONTROL_REJECT_CONNECTION_REQUEST},\r
+                                       ParameterLength: sizeof(Bluetooth_HCICommand_RejectConnectionRequest_t),\r
                                };\r
                        \r
                                };\r
                        \r
-                       BT_DEBUG("(HCI) Enter State: Bluetooth_Conn_RejectConnection", NULL);\r
-\r
-                       Bluetooth_HCICommand_RejectConnectionRequest_Params_t RejectConnectionParams;\r
+                       BT_HCI_DEBUG("Enter State: Bluetooth_Conn_RejectConnection", NULL);\r
 \r
 \r
-                       memcpy(RejectConnectionParams.RemoteAddress, Bluetooth_TempDeviceAddress,\r
-                              sizeof(Bluetooth_TempDeviceAddress));\r
+                       /* Copy over the temporary BT device address saved from the Connection Request event, indicate failure\r
+                          to accept the connection due to limited device resources */\r
+                       Bluetooth_HCICommand_RejectConnectionRequest_t RejectConnectionParams;\r
+                       memcpy(RejectConnectionParams.RemoteAddress, Bluetooth_TempDeviceAddress, sizeof(RejectConnectionParams.RemoteAddress));\r
                        RejectConnectionParams.Reason = ERROR_LIMITED_RESOURCES;\r
 \r
                        RejectConnectionParams.Reason = ERROR_LIMITED_RESOURCES;\r
 \r
-                       Bluetooth_SendHCICommand(&AcceptConnectionParams, sizeof(AcceptConnectionParams));\r
+                       /* Send the command to reject the remote connection request */\r
+                       Bluetooth_SendHCICommand(&RejectConnectionParams, sizeof(Bluetooth_HCICommand_RejectConnectionRequest_t));\r
                \r
                \r
-                       Bluetooth_HCIProcessingState     = Bluetooth_PrepareToProcessEvents;\r
+                       Bluetooth_HCIProcessingState = Bluetooth_ProcessEvents;\r
                        break;\r
                case Bluetooth_Conn_SendPINCode:\r
                        HCICommandHeader = (Bluetooth_HCICommand_Header_t)\r
                                {\r
                                        OpCode: {OGF: OGF_LINK_CONTROL, OCF: OCF_LINK_CONTROL_PIN_CODE_REQUEST_REPLY},\r
                        break;\r
                case Bluetooth_Conn_SendPINCode:\r
                        HCICommandHeader = (Bluetooth_HCICommand_Header_t)\r
                                {\r
                                        OpCode: {OGF: OGF_LINK_CONTROL, OCF: OCF_LINK_CONTROL_PIN_CODE_REQUEST_REPLY},\r
-                                       ParameterLength: sizeof(Bluetooth_HCICommand_PinCodeResponse_Params_t),\r
+                                       ParameterLength: sizeof(Bluetooth_HCICommand_PinCodeResponse_t),\r
                                };\r
                        \r
                                };\r
                        \r
-                       BT_DEBUG("(HCI) Enter State: Bluetooth_Conn_SendPINCode", NULL);\r
-                       BT_DEBUG("(HCI) -- PIN: %s", Bluetooth_DeviceConfiguration.PINCode);\r
+                       BT_HCI_DEBUG("Enter State: Bluetooth_Conn_SendPINCode", NULL);\r
+                       BT_HCI_DEBUG("-- PIN: %s", Bluetooth_DeviceConfiguration.PINCode);\r
 \r
 \r
-                       Bluetooth_HCICommand_PinCodeResponse_Params_t PINCodeRequestParams;\r
-               \r
-                       memcpy(PINCodeRequestParams.RemoteAddress, Bluetooth_TempDeviceAddress,\r
-                              sizeof(Bluetooth_TempDeviceAddress));\r
+                       /* Copy over the temporary BT device address saved from the PIN Code Request event, copy over the\r
+                          local PIN authentication code to the response */\r
+                       Bluetooth_HCICommand_PinCodeResponse_t PINCodeRequestParams;\r
+                       memcpy(PINCodeRequestParams.RemoteAddress, Bluetooth_TempDeviceAddress, sizeof(PINCodeRequestParams.RemoteAddress));\r
                        PINCodeRequestParams.PINCodeLength = strlen(Bluetooth_DeviceConfiguration.PINCode);\r
                        PINCodeRequestParams.PINCodeLength = strlen(Bluetooth_DeviceConfiguration.PINCode);\r
-                       memcpy(PINCodeRequestParams.PINCode, Bluetooth_DeviceConfiguration.PINCode,\r
-                              sizeof(Bluetooth_DeviceConfiguration.PINCode));\r
+                       memcpy(PINCodeRequestParams.PINCode, Bluetooth_DeviceConfiguration.PINCode, sizeof(PINCodeRequestParams.PINCode));\r
                        \r
                        \r
-                       Bluetooth_SendHCICommand(&PINCodeRequestParams, sizeof(PINCodeRequestParams));\r
-               \r
-                       do\r
-                       {\r
-                               while (!(Bluetooth_GetNextHCIEventHeader()));\r
-                               Bluetooth_DiscardRemainingHCIEventParameters();\r
-                       } while (HCIEventHeader.EventCode != EVENT_COMMAND_COMPLETE);\r
+                       /* Send the command to transmit the device's local PIN number for authentication */\r
+                       Bluetooth_SendHCICommand(&PINCodeRequestParams, sizeof(Bluetooth_HCICommand_PinCodeResponse_t));\r
 \r
 \r
-                       Bluetooth_HCIProcessingState     = Bluetooth_PrepareToProcessEvents;\r
+                       Bluetooth_HCIProcessingState = Bluetooth_ProcessEvents;\r
                        break;\r
        }\r
 }\r
                        break;\r
        }\r
 }\r
Lightweight USB Framework for AVRs