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@ -30,15 +30,15 @@
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#include "BluetoothHCICommands.h"
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static Bluetooth_HCICommand_Header_t HCICommandHeader;
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static Bluetooth_HCIEvent_Header_t HCIEventHeader;
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static Bluetooth_HCICommand_Header_t HCICommandHeader;
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uint8_t Bluetooth_HCIProcessingState;
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uint8_t Bluetooth_HCINextState;
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static uint8_t Bluetooth_TempDeviceAddress[6];
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uint8_t Bluetooth_HCIProcessingState;
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static uint8_t Bluetooth_HCINextState;
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static uint8_t Bluetooth_TempDeviceAddress[6];
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static uint8_t Bluetooth_SendHCICommand(void* Parameters, uint8_t ParamLength)
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static uint8_t Bluetooth_SendHCICommand(void* Parameters, uint16_t ParameterLength)
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{
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/* Need to reserve the amount of bytes given in the header for the complete payload */
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uint8_t CommandBuffer[sizeof(HCICommandHeader) + HCICommandHeader.ParameterLength];
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USB_ControlRequest = (USB_Request_Header_t)
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@ -49,21 +49,23 @@ static uint8_t Bluetooth_SendHCICommand(void* Parameters, uint8_t ParamLength)
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.wIndex = 0,
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.wLength = sizeof(CommandBuffer)
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};
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memset(CommandBuffer, 0x00, sizeof(CommandBuffer));
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/* Copy over the HCI command header to the allocated buffer */
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memcpy(CommandBuffer, &HCICommandHeader, sizeof(HCICommandHeader));
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if (ParamLength)
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memcpy(&CommandBuffer[sizeof(HCICommandHeader)], Parameters, ParamLength);
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/* Zero out the parameter section of the response to ensure that any padding bytes do not expose private RAM contents */
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memset(&CommandBuffer[sizeof(HCICommandHeader)], 0x00, HCICommandHeader.ParameterLength);
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/* Copy over the command parameters (if any) to the command buffer - note, the number of actual source parameter bytes
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may differ to those in the header; any difference in length is filled with 0x00 padding bytes */
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memcpy(&CommandBuffer[sizeof(HCICommandHeader)], Parameters, ParameterLength);
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Pipe_SelectPipe(PIPE_CONTROLPIPE);
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return USB_Host_SendControlRequest(CommandBuffer);
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}
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void Bluetooth_ProcessHCICommands(void)
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{
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uint8_t ErrorCode;
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switch (Bluetooth_HCIProcessingState)
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{
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case Bluetooth_ProcessEvents:
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@ -72,68 +74,87 @@ void Bluetooth_ProcessHCICommands(void)
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if (Pipe_IsReadWriteAllowed())
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{
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Bluetooth_HCIEvent_Header_t HCIEventHeader;
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/* Read in the event header to fetch the event code and payload length */
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Pipe_Read_Stream_LE(&HCIEventHeader, sizeof(HCIEventHeader));
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/* Create a temporary buffer for the event parameters */
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uint8_t EventParams[HCIEventHeader.ParameterLength];
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/* Read in the event parameters into the temporary buffer */
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Pipe_Read_Stream_LE(&EventParams, HCIEventHeader.ParameterLength);
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Pipe_ClearIN();
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BT_DEBUG("(HCI) Event Code: 0x%02X", HCIEventHeader.EventCode);
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BT_HCI_DEBUG("Event Code: 0x%02X", HCIEventHeader.EventCode);
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switch (HCIEventHeader.EventCode)
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{
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case EVENT_COMMAND_COMPLETE:
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Bluetooth_HCIProcessingState = Bluetooth_HCINextState;
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BT_DEBUG("(HCI) >> Command Complete (Opcode 0x%04x)",
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BT_HCI_DEBUG(">> Command Complete (Opcode 0x%04x)",
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((Bluetooth_HCIEvent_CommandComplete_t*)&EventParams)->Opcode);
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break;
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case EVENT_COMMAND_STATUS:
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/* If the execution of a command failed, reset the stack */
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if (((Bluetooth_HCIEvent_CommandStatus_t*)&EventParams)->Status)
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Bluetooth_HCIProcessingState = Bluetooth_Init;
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BT_DEBUG("(HCI) >> Command Status: 0x%02X",
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BT_HCI_DEBUG(">> Command Status: 0x%02X",
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((Bluetooth_HCIEvent_CommandStatus_t*)&EventParams)->Status);
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break;
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case EVENT_CONNECTION_REQUEST:
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/* Need to store the remote device's BT address in a temporary buffer for later use */
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memcpy(Bluetooth_TempDeviceAddress,
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&((Bluetooth_HCIEvent_ConnectionRequest_t*)&EventParams)->RemoteAddress,
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sizeof(Bluetooth_TempDeviceAddress));
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/* Only accept the connection if it is a ACL (data) connection */
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Bluetooth_HCIProcessingState = (Bluetooth_Connection.IsConnected ||
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(((Bluetooth_HCIEvent_ConnectionRequest_t*)&EventParams)->LinkType != 0x01)) ?
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Bluetooth_Conn_RejectConnection : Bluetooth_Conn_AcceptConnection;
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BT_DEBUG("(HCI) >> Connection Request from Device %02X:%02X:%02X:%02X:%02X:%02X",
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BT_HCI_DEBUG(">> Connection Request from Device %02X:%02X:%02X:%02X:%02X:%02X",
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Bluetooth_TempDeviceAddress[5], Bluetooth_TempDeviceAddress[4], Bluetooth_TempDeviceAddress[3],
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Bluetooth_TempDeviceAddress[2], Bluetooth_TempDeviceAddress[1], Bluetooth_TempDeviceAddress[0]);
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break;
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case EVENT_PIN_CODE_REQUEST:
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/* Need to store the remote device's BT address in a temporary buffer for later use */
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memcpy(Bluetooth_TempDeviceAddress,
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&((Bluetooth_HCIEvent_PinCodeRequest_t*)&EventParams)->RemoteAddress,
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sizeof(Bluetooth_TempDeviceAddress));
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Bluetooth_HCIProcessingState = Bluetooth_Conn_SendPINCode;
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BT_DEBUG("(HCI) >> PIN Request from Device %02X:%02X:%02X:%02X:%02X:%02X",
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BT_HCI_DEBUG(">> PIN Request from Device %02X:%02X:%02X:%02X:%02X:%02X",
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Bluetooth_TempDeviceAddress[5], Bluetooth_TempDeviceAddress[4], Bluetooth_TempDeviceAddress[3],
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Bluetooth_TempDeviceAddress[2], Bluetooth_TempDeviceAddress[1], Bluetooth_TempDeviceAddress[0]);
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break;
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case EVENT_CONNECTION_COMPLETE:
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/* Need to store the remote device's BT address in a temporary buffer for later use */
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memcpy(Bluetooth_Connection.RemoteAddress,
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&((Bluetooth_HCIEvent_ConnectionComplete_t*)&EventParams)->RemoteAddress,
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sizeof(Bluetooth_TempDeviceAddress));
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/* Store the created connection handle and indicate that the connection has been established */
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Bluetooth_Connection.ConnectionHandle = ((Bluetooth_HCIEvent_ConnectionComplete_t*)&EventParams)->ConnectionHandle;
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Bluetooth_Connection.IsConnected = true;
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BT_DEBUG("(HCI) >> Connection Complete to Device %02X:%02X:%02X:%02X:%02X:%02X, Handle 0x%04x",
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BT_HCI_DEBUG(">> Connection Complete to Device %02X:%02X:%02X:%02X:%02X:%02X, Handle 0x%04x",
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Bluetooth_Connection.RemoteAddress[5], Bluetooth_Connection.RemoteAddress[4],
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Bluetooth_Connection.RemoteAddress[3], Bluetooth_Connection.RemoteAddress[2],
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Bluetooth_Connection.RemoteAddress[1], Bluetooth_Connection.RemoteAddress[0],
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Bluetooth_Connection.ConnectionHandle);
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break;
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case EVENT_DISCONNECTION_COMPLETE:
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BT_HCI_DEBUG(">> Disconnection Complete", NULL);
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/* Device disconnected, indicate connection information no longer valid */
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Bluetooth_Connection.IsConnected = false;
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Bluetooth_HCIProcessingState = Bluetooth_Init;
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break;
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}
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}
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@ -141,6 +162,7 @@ void Bluetooth_ProcessHCICommands(void)
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break;
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case Bluetooth_Init:
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/* Reset the connection information structure to destroy any previous connection state */
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memset(&Bluetooth_Connection, 0x00, sizeof(Bluetooth_Connection));
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Bluetooth_HCIProcessingState = Bluetooth_Init_Reset;
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@ -152,24 +174,11 @@ void Bluetooth_ProcessHCICommands(void)
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ParameterLength: 0,
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};
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BT_DEBUG("(HCI) Enter State: Bluetooth_Init_Reset", NULL);
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BT_HCI_DEBUG("Enter State: Bluetooth_Init_Reset", NULL);
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ErrorCode = Bluetooth_SendHCICommand(NULL, 0);
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/* Send the command to reset the bluetooth dongle controller */
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Bluetooth_SendHCICommand(NULL, 0);
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Bluetooth_HCINextState = Bluetooth_Init_ReadBufferSize;
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Bluetooth_HCIProcessingState = Bluetooth_ProcessEvents;
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break;
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case Bluetooth_Init_ReadBufferSize:
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HCICommandHeader = (Bluetooth_HCICommand_Header_t)
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{
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OpCode: {OGF: OGF_CTRLR_INFORMATIONAL, OCF: OGF_CTRLR_INFORMATIONAL_READBUFFERSIZE},
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ParameterLength: 0,
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};
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BT_DEBUG("(HCI) Enter State: Bluetooth_Init_ReadBufferSize", NULL);
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ErrorCode = Bluetooth_SendHCICommand(NULL, 0);
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Bluetooth_HCINextState = Bluetooth_Init_SetLocalName;
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Bluetooth_HCIProcessingState = Bluetooth_ProcessEvents;
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break;
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@ -180,10 +189,11 @@ void Bluetooth_ProcessHCICommands(void)
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ParameterLength: 248,
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};
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BT_DEBUG("(HCI) Enter State: Bluetooth_Init_SetLocalName", NULL);
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BT_DEBUG("(HCI) -- Name: %s", Bluetooth_DeviceConfiguration.Name);
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BT_HCI_DEBUG("Enter State: Bluetooth_Init_SetLocalName", NULL);
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BT_HCI_DEBUG("-- Name: %s", Bluetooth_DeviceConfiguration.Name);
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ErrorCode = Bluetooth_SendHCICommand(Bluetooth_DeviceConfiguration.Name, strlen(Bluetooth_DeviceConfiguration.Name));
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/* Send the command to set the bluetooth dongle's name for other devices to see */
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Bluetooth_SendHCICommand(Bluetooth_DeviceConfiguration.Name, strlen(Bluetooth_DeviceConfiguration.Name));
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Bluetooth_HCINextState = Bluetooth_Init_SetDeviceClass;
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Bluetooth_HCIProcessingState = Bluetooth_ProcessEvents;
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@ -195,9 +205,10 @@ void Bluetooth_ProcessHCICommands(void)
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ParameterLength: 3,
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};
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BT_DEBUG("(HCI) Enter State: Bluetooth_Init_SetDeviceClass", NULL);
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BT_HCI_DEBUG("Enter State: Bluetooth_Init_SetDeviceClass", NULL);
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ErrorCode = Bluetooth_SendHCICommand(&Bluetooth_DeviceConfiguration.Class, 3);
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/* Send the command to set the class of the device for other devices to see */
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Bluetooth_SendHCICommand(&Bluetooth_DeviceConfiguration.Class, 3);
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Bluetooth_HCINextState = Bluetooth_Init_WriteScanEnable;
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Bluetooth_HCIProcessingState = Bluetooth_ProcessEvents;
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@ -209,10 +220,12 @@ void Bluetooth_ProcessHCICommands(void)
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ParameterLength: 1,
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};
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BT_DEBUG("(HCI) Enter State: Bluetooth_Init_WriteScanEnable", NULL);
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BT_HCI_DEBUG("Enter State: Bluetooth_Init_WriteScanEnable", NULL);
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uint8_t Interval = InquiryAndPageScans;
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ErrorCode = Bluetooth_SendHCICommand(&Interval, 1);
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uint8_t Interval = BT_SCANMODE_InquiryAndPageScans;
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/* Send the command to set the remote device scanning mode */
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Bluetooth_SendHCICommand(&Interval, 1);
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Bluetooth_HCINextState = Bluetooth_ProcessEvents;
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Bluetooth_HCIProcessingState = Bluetooth_ProcessEvents;
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@ -224,14 +237,17 @@ void Bluetooth_ProcessHCICommands(void)
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ParameterLength: sizeof(Bluetooth_HCICommand_AcceptConnectionRequest_t),
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};
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BT_DEBUG("(HCI) Enter State: Bluetooth_Conn_AcceptConnection", NULL);
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BT_HCI_DEBUG("Enter State: Bluetooth_Conn_AcceptConnection", NULL);
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/* Copy over the temporary BT device address saved from the Connection Request event, indicate slave
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connection role */
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Bluetooth_HCICommand_AcceptConnectionRequest_t AcceptConnectionParams;
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memcpy(AcceptConnectionParams.RemoteAddress, Bluetooth_TempDeviceAddress, sizeof(Bluetooth_TempDeviceAddress));
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memcpy(AcceptConnectionParams.RemoteAddress, Bluetooth_TempDeviceAddress,
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sizeof(AcceptConnectionParams.RemoteAddress));
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AcceptConnectionParams.SlaveRole = true;
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ErrorCode = Bluetooth_SendHCICommand(&AcceptConnectionParams, sizeof(AcceptConnectionParams));
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/* Send the command to accept the remote connection request */
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Bluetooth_SendHCICommand(&AcceptConnectionParams, sizeof(Bluetooth_HCICommand_AcceptConnectionRequest_t));
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Bluetooth_HCIProcessingState = Bluetooth_ProcessEvents;
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break;
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@ -242,14 +258,16 @@ void Bluetooth_ProcessHCICommands(void)
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ParameterLength: sizeof(Bluetooth_HCICommand_RejectConnectionRequest_t),
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};
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BT_DEBUG("(HCI) Enter State: Bluetooth_Conn_RejectConnection", NULL);
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BT_HCI_DEBUG("Enter State: Bluetooth_Conn_RejectConnection", NULL);
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/* Copy over the temporary BT device address saved from the Connection Request event, indicate failure
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to accept the connection due to limited device resources */
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Bluetooth_HCICommand_RejectConnectionRequest_t RejectConnectionParams;
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memcpy(RejectConnectionParams.RemoteAddress, Bluetooth_TempDeviceAddress, sizeof(RejectConnectionParams.RemoteAddress));
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RejectConnectionParams.Reason = ERROR_LIMITED_RESOURCES;
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ErrorCode = Bluetooth_SendHCICommand(&RejectConnectionParams, sizeof(RejectConnectionParams));
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/* Send the command to reject the remote connection request */
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Bluetooth_SendHCICommand(&RejectConnectionParams, sizeof(Bluetooth_HCICommand_RejectConnectionRequest_t));
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Bluetooth_HCIProcessingState = Bluetooth_ProcessEvents;
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break;
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@ -260,16 +278,18 @@ void Bluetooth_ProcessHCICommands(void)
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ParameterLength: sizeof(Bluetooth_HCICommand_PinCodeResponse_t),
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};
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BT_DEBUG("(HCI) Enter State: Bluetooth_Conn_SendPINCode", NULL);
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BT_DEBUG("(HCI) -- PIN: %s", Bluetooth_DeviceConfiguration.PINCode);
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BT_HCI_DEBUG("Enter State: Bluetooth_Conn_SendPINCode", NULL);
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BT_HCI_DEBUG("-- PIN: %s", Bluetooth_DeviceConfiguration.PINCode);
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/* Copy over the temporary BT device address saved from the PIN Code Request event, copy over the
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local PIN authentication code to the response */
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Bluetooth_HCICommand_PinCodeResponse_t PINCodeRequestParams;
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memcpy(PINCodeRequestParams.RemoteAddress, Bluetooth_TempDeviceAddress, sizeof(Bluetooth_TempDeviceAddress));
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memcpy(PINCodeRequestParams.RemoteAddress, Bluetooth_TempDeviceAddress, sizeof(PINCodeRequestParams.RemoteAddress));
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PINCodeRequestParams.PINCodeLength = strlen(Bluetooth_DeviceConfiguration.PINCode);
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memcpy(PINCodeRequestParams.PINCode, Bluetooth_DeviceConfiguration.PINCode, sizeof(PINCodeRequestParams.PINCode));
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ErrorCode = Bluetooth_SendHCICommand(&PINCodeRequestParams, sizeof(PINCodeRequestParams));
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/* Send the command to transmit the device's local PIN number for authentication */
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Bluetooth_SendHCICommand(&PINCodeRequestParams, sizeof(Bluetooth_HCICommand_PinCodeResponse_t));
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Bluetooth_HCIProcessingState = Bluetooth_ProcessEvents;
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break;
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Dean Camera
15 years ago