X-Git-Url: http://git.linex4red.de/pub/USBasp.git/blobdiff_plain/c77f136661ae0fa779c02ef6efeab95aa4b92068..ceb16ee24f1e6add5e2ad0398369c24d2d868cd8:/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 3d5b14a4c..740ce6766 100644 --- a/Demos/Host/Incomplete/BluetoothHost/Lib/BluetoothHCICommands.c +++ b/Demos/Host/Incomplete/BluetoothHost/Lib/BluetoothHCICommands.c @@ -28,18 +28,24 @@ this software. */ +/* + TODO: Add local to remote device connections + */ + #define INCLUDE_FROM_BLUETOOTHHCICOMMANDS_C #include "BluetoothHCICommands.h" -static BT_HCICommand_Header_t HCICommandHeader; - - uint8_t Bluetooth_HCIProcessingState; -static uint8_t Bluetooth_HCINextState; -static uint8_t Bluetooth_TempDeviceAddress[6]; +/** Temporary Bluetooth Device Address, for HCI responses which much include the detination address */ +static uint8_t Bluetooth_TempDeviceAddress[6]; +/** Bluetooth HCI processing task. This task should be called repeatedly the main Bluetooth + * stack task to manage the HCI processing state. + */ void Bluetooth_HCITask(void) { - switch (Bluetooth_HCIProcessingState) + BT_HCICommand_Header_t HCICommandHeader; + + switch (Bluetooth_State.CurrentHCIState) { case Bluetooth_ProcessEvents: Pipe_SelectPipe(BLUETOOTH_EVENTS_PIPE); @@ -58,18 +64,39 @@ void Bluetooth_HCITask(void) /* Read in the event parameters into the temporary buffer */ Pipe_Read_Stream_LE(&EventParams, HCIEventHeader.ParameterLength); Pipe_ClearIN(); + + BT_HCI_DEBUG(1, "Event Received (0x%02X)", HCIEventHeader.EventCode); switch (HCIEventHeader.EventCode) { case EVENT_COMMAND_COMPLETE: - Bluetooth_HCIProcessingState = Bluetooth_HCINextState; + BT_HCI_DEBUG(1, "<< Command Complete"); + + /* Check which operation was completed in case we need to process the even parameters */ + switch (((BT_HCIEvent_CommandComplete_t*)&EventParams)->Opcode) + { + case (OGF_CTRLR_INFORMATIONAL | OCF_CTRLR_INFORMATIONAL_READBDADDR): + /* A READ BDADDR command completed, copy over the local device's BDADDR from the response */ + memcpy(Bluetooth_State.LocalBDADDR, + &((BT_HCIEvent_CommandComplete_t*)&EventParams)->ReturnParams[1], + sizeof(Bluetooth_State.LocalBDADDR)); + break; + } + + Bluetooth_State.CurrentHCIState = Bluetooth_State.NextHCIState; break; case EVENT_COMMAND_STATUS: + BT_HCI_DEBUG(1, "<< Command Status"); + BT_HCI_DEBUG(2, "-- Status Code: 0x%02X", (((BT_HCIEvent_CommandStatus_t*)&EventParams)->Status)); + /* If the execution of a command failed, reset the stack */ if (((BT_HCIEvent_CommandStatus_t*)&EventParams)->Status) - Bluetooth_HCIProcessingState = Bluetooth_Init; + Bluetooth_State.CurrentHCIState = Bluetooth_Init; break; case EVENT_CONNECTION_REQUEST: + BT_HCI_DEBUG(1, "<< Connection Request"); + BT_HCI_DEBUG(2, "-- Link Type: 0x%02X", (((BT_HCIEvent_ConnectionRequest_t*)&EventParams)->LinkType)); + /* Need to store the remote device's BT address in a temporary buffer for later use */ memcpy(Bluetooth_TempDeviceAddress, &((BT_HCIEvent_ConnectionRequest_t*)&EventParams)->RemoteAddress, @@ -79,19 +106,38 @@ void Bluetooth_HCITask(void) /* Only accept the connection if it is a ACL (data) connection, a device is not already connected and the user application has indicated that the connection should be allowed */ - Bluetooth_HCIProcessingState = (Bluetooth_Connection.IsConnected || !(IsACLConnection) || - !(Bluetooth_ConnectionRequest(Bluetooth_TempDeviceAddress))) ? - Bluetooth_Conn_RejectConnection : Bluetooth_Conn_AcceptConnection; + Bluetooth_State.CurrentHCIState = (Bluetooth_Connection.IsConnected || !(IsACLConnection) || + !(Bluetooth_ConnectionRequest(Bluetooth_TempDeviceAddress))) ? + Bluetooth_Conn_RejectConnection : Bluetooth_Conn_AcceptConnection; + + BT_HCI_DEBUG(2, "-- Connection %S", (Bluetooth_State.CurrentHCIState == Bluetooth_Conn_RejectConnection) ? + PSTR("REJECTED") : PSTR("ACCEPTED")); + break; case EVENT_PIN_CODE_REQUEST: + BT_HCI_DEBUG(1, "<< Pin Code Request"); + /* Need to store the remote device's BT address in a temporary buffer for later use */ memcpy(Bluetooth_TempDeviceAddress, &((BT_HCIEvent_PinCodeReq_t*)&EventParams)->RemoteAddress, sizeof(Bluetooth_TempDeviceAddress)); - Bluetooth_HCIProcessingState = Bluetooth_Conn_SendPINCode; + Bluetooth_State.CurrentHCIState = Bluetooth_Conn_SendPINCode; + break; + case EVENT_LINK_KEY_REQUEST: + BT_HCI_DEBUG(1, "<< Link Key Request"); + + /* Need to store the remote device's BT address in a temporary buffer for later use */ + memcpy(Bluetooth_TempDeviceAddress, + &((BT_HCIEvent_LinkKeyReq_t*)&EventParams)->RemoteAddress, + sizeof(Bluetooth_TempDeviceAddress)); + + Bluetooth_State.CurrentHCIState = Bluetooth_Conn_SendLinkKeyNAK; break; case EVENT_CONNECTION_COMPLETE: + BT_HCI_DEBUG(1, "<< Connection Complete"); + BT_HCI_DEBUG(2, "-- Handle: 0x%04X", ((BT_HCIEvent_ConnectionComplete_t*)&EventParams)->ConnectionHandle); + /* Need to store the remote device's BT address in a temporary buffer for later use */ memcpy(Bluetooth_Connection.RemoteAddress, &((BT_HCIEvent_ConnectionComplete_t*)&EventParams)->RemoteAddress, @@ -104,13 +150,15 @@ void Bluetooth_HCITask(void) Bluetooth_ConnectionComplete(); break; case EVENT_DISCONNECTION_COMPLETE: + BT_HCI_DEBUG(1, "<< Disconnection Complete"); + /* Device disconnected, indicate connection information no longer valid */ Bluetooth_Connection.IsConnected = false; Bluetooth_DisconnectionComplete(); - Bluetooth_HCIProcessingState = Bluetooth_Init; - break; + Bluetooth_State.CurrentHCIState = Bluetooth_Init; + break; } } @@ -118,69 +166,122 @@ void Bluetooth_HCITask(void) break; case Bluetooth_Init: + BT_HCI_DEBUG(1, "# Init"); + + Bluetooth_State.IsInitialized = false; + /* Reset the connection information structure to destroy any previous connection state */ memset(&Bluetooth_Connection, 0x00, sizeof(Bluetooth_Connection)); - Bluetooth_HCIProcessingState = Bluetooth_Init_Reset; + Bluetooth_State.CurrentHCIState = Bluetooth_Init_Reset; break; case Bluetooth_Init_Reset: + BT_HCI_DEBUG(1, "# Reset"); + HCICommandHeader = (BT_HCICommand_Header_t) { - OpCode: {OGF: OGF_CTRLR_BASEBAND, OCF: OCF_CTRLR_BASEBAND_RESET}, + OpCode: (OGF_CTRLR_BASEBAND | OCF_CTRLR_BASEBAND_RESET), ParameterLength: 0, }; /* Send the command to reset the bluetooth dongle controller */ - Bluetooth_SendHCICommand(NULL, 0); + Bluetooth_SendHCICommand(&HCICommandHeader, NULL, 0); - Bluetooth_HCINextState = Bluetooth_Init_SetLocalName; - Bluetooth_HCIProcessingState = Bluetooth_ProcessEvents; + Bluetooth_State.NextHCIState = Bluetooth_Init_ReadBufferSize; + Bluetooth_State.CurrentHCIState = Bluetooth_ProcessEvents; + break; + case Bluetooth_Init_ReadBufferSize: + BT_HCI_DEBUG(1, "# Read Buffer Size"); + + HCICommandHeader = (BT_HCICommand_Header_t) + { + OpCode: (OGF_CTRLR_INFORMATIONAL | OCF_CTRLR_INFORMATIONAL_READBUFFERSIZE), + ParameterLength: 0, + }; + + /* Send the command to read the bluetooth buffer size (mandatory before device sends any data) */ + Bluetooth_SendHCICommand(&HCICommandHeader, NULL, 0); + + Bluetooth_State.NextHCIState = Bluetooth_Init_GetBDADDR; + Bluetooth_State.CurrentHCIState = Bluetooth_ProcessEvents; + break; + case Bluetooth_Init_GetBDADDR: + BT_HCI_DEBUG(1, "# Get BDADDR"); + + HCICommandHeader = (BT_HCICommand_Header_t) + { + OpCode: (OGF_CTRLR_INFORMATIONAL | OCF_CTRLR_INFORMATIONAL_READBDADDR), + ParameterLength: 0, + }; + + /* Send the command to retrieve the BDADDR of the inserted bluetooth dongle */ + Bluetooth_SendHCICommand(&HCICommandHeader, NULL, 0); + + Bluetooth_State.NextHCIState = Bluetooth_Init_SetLocalName; + Bluetooth_State.CurrentHCIState = Bluetooth_ProcessEvents; break; case Bluetooth_Init_SetLocalName: + BT_HCI_DEBUG(1, "# Set Local Name"); + HCICommandHeader = (BT_HCICommand_Header_t) { - OpCode: {OGF: OGF_CTRLR_BASEBAND, OCF: OCF_CTRLR_BASEBAND_WRITE_LOCAL_NAME}, + OpCode: (OGF_CTRLR_BASEBAND | OCF_CTRLR_BASEBAND_WRITE_LOCAL_NAME), ParameterLength: 248, }; /* Send the command to set the bluetooth dongle's name for other devices to see */ - Bluetooth_SendHCICommand(Bluetooth_DeviceConfiguration.Name, strlen(Bluetooth_DeviceConfiguration.Name)); + Bluetooth_SendHCICommand(&HCICommandHeader, Bluetooth_DeviceConfiguration.Name, strlen(Bluetooth_DeviceConfiguration.Name)); - Bluetooth_HCINextState = Bluetooth_Init_SetDeviceClass; - Bluetooth_HCIProcessingState = Bluetooth_ProcessEvents; + Bluetooth_State.NextHCIState = Bluetooth_Init_SetDeviceClass; + Bluetooth_State.CurrentHCIState = Bluetooth_ProcessEvents; break; case Bluetooth_Init_SetDeviceClass: + BT_HCI_DEBUG(1, "# Set Device Class"); + HCICommandHeader = (BT_HCICommand_Header_t) { - OpCode: {OGF: OGF_CTRLR_BASEBAND, OCF: OCF_CTRLR_BASEBAND_WRITE_CLASS_OF_DEVICE}, + OpCode: (OGF_CTRLR_BASEBAND | OCF_CTRLR_BASEBAND_WRITE_CLASS_OF_DEVICE), ParameterLength: 3, }; /* Send the command to set the class of the device for other devices to see */ - Bluetooth_SendHCICommand(&Bluetooth_DeviceConfiguration.Class, 3); + Bluetooth_SendHCICommand(&HCICommandHeader, &Bluetooth_DeviceConfiguration.Class, 3); - Bluetooth_HCINextState = Bluetooth_Init_WriteScanEnable; - Bluetooth_HCIProcessingState = Bluetooth_ProcessEvents; + Bluetooth_State.NextHCIState = Bluetooth_Init_WriteScanEnable; + Bluetooth_State.CurrentHCIState = Bluetooth_ProcessEvents; break; case Bluetooth_Init_WriteScanEnable: + BT_HCI_DEBUG(1, "# Write Scan Enable"); + HCICommandHeader = (BT_HCICommand_Header_t) { - OpCode: {OGF: OGF_CTRLR_BASEBAND, OCF: OCF_CTRLR_BASEBAND_WRITE_SCAN_ENABLE}, + OpCode: (OGF_CTRLR_BASEBAND | OCF_CTRLR_BASEBAND_WRITE_SCAN_ENABLE), ParameterLength: 1, }; uint8_t Interval = BT_SCANMODE_InquiryAndPageScans; /* Send the command to set the remote device scanning mode */ - Bluetooth_SendHCICommand(&Interval, 1); + Bluetooth_SendHCICommand(&HCICommandHeader, &Interval, 1); - Bluetooth_HCINextState = Bluetooth_ProcessEvents; - Bluetooth_HCIProcessingState = Bluetooth_ProcessEvents; + Bluetooth_State.NextHCIState = Bluetooth_Init_FinalizeInit; + Bluetooth_State.CurrentHCIState = Bluetooth_ProcessEvents; + break; + case Bluetooth_Init_FinalizeInit: + Bluetooth_State.IsInitialized = true; + + /* Fire the user application callback to indicate that the stack is now fully initialized */ + Bluetooth_StackInitialized(); + + Bluetooth_State.NextHCIState = Bluetooth_ProcessEvents; + Bluetooth_State.CurrentHCIState = Bluetooth_ProcessEvents; break; case Bluetooth_Conn_AcceptConnection: + BT_HCI_DEBUG(1, "# Accept Connection"); + HCICommandHeader = (BT_HCICommand_Header_t) { - OpCode: {OGF: OGF_LINK_CONTROL, OCF: OCF_LINK_CONTROL_ACCEPT_CONNECTION_REQUEST}, + OpCode: (OGF_LINK_CONTROL | OCF_LINK_CONTROL_ACCEPT_CONNECTION_REQUEST), ParameterLength: sizeof(BT_HCICommand_AcceptConnectionReq_t), }; @@ -192,14 +293,16 @@ void Bluetooth_HCITask(void) AcceptConnectionParams.SlaveRole = true; /* Send the command to accept the remote connection request */ - Bluetooth_SendHCICommand(&AcceptConnectionParams, sizeof(BT_HCICommand_AcceptConnectionReq_t)); + Bluetooth_SendHCICommand(&HCICommandHeader, &AcceptConnectionParams, sizeof(BT_HCICommand_AcceptConnectionReq_t)); - Bluetooth_HCIProcessingState = Bluetooth_ProcessEvents; + Bluetooth_State.CurrentHCIState = Bluetooth_ProcessEvents; break; case Bluetooth_Conn_RejectConnection: + BT_HCI_DEBUG(1, "# Reject Connection"); + HCICommandHeader = (BT_HCICommand_Header_t) { - OpCode: {OGF: OGF_LINK_CONTROL, OCF: OCF_LINK_CONTROL_REJECT_CONNECTION_REQUEST}, + OpCode: (OGF_LINK_CONTROL | OCF_LINK_CONTROL_REJECT_CONNECTION_REQUEST), ParameterLength: sizeof(BT_HCICommand_RejectConnectionReq_t), }; @@ -210,14 +313,16 @@ void Bluetooth_HCITask(void) RejectConnectionParams.Reason = Bluetooth_Connection.IsConnected ? ERROR_LIMITED_RESOURCES : ERROR_UNACCEPTABLE_BDADDR; /* Send the command to reject the remote connection request */ - Bluetooth_SendHCICommand(&RejectConnectionParams, sizeof(BT_HCICommand_RejectConnectionReq_t)); + Bluetooth_SendHCICommand(&HCICommandHeader, &RejectConnectionParams, sizeof(BT_HCICommand_RejectConnectionReq_t)); - Bluetooth_HCIProcessingState = Bluetooth_ProcessEvents; + Bluetooth_State.CurrentHCIState = Bluetooth_ProcessEvents; break; case Bluetooth_Conn_SendPINCode: + BT_HCI_DEBUG(1, "# Send Pin Code"); + HCICommandHeader = (BT_HCICommand_Header_t) { - OpCode: {OGF: OGF_LINK_CONTROL, OCF: OCF_LINK_CONTROL_PIN_CODE_REQUEST_REPLY}, + OpCode: (OGF_LINK_CONTROL | OCF_LINK_CONTROL_PIN_CODE_REQUEST_REPLY), ParameterLength: sizeof(BT_HCICommand_PinCodeResp_t), }; @@ -229,17 +334,43 @@ void Bluetooth_HCITask(void) memcpy(PINCodeRequestParams.PINCode, Bluetooth_DeviceConfiguration.PINCode, sizeof(PINCodeRequestParams.PINCode)); /* Send the command to transmit the device's local PIN number for authentication */ - Bluetooth_SendHCICommand(&PINCodeRequestParams, sizeof(BT_HCICommand_PinCodeResp_t)); + Bluetooth_SendHCICommand(&HCICommandHeader, &PINCodeRequestParams, sizeof(BT_HCICommand_PinCodeResp_t)); + + Bluetooth_State.CurrentHCIState = Bluetooth_ProcessEvents; + break; + case Bluetooth_Conn_SendLinkKeyNAK: + BT_HCI_DEBUG(1, "# Send Link Key NAK"); + + HCICommandHeader = (BT_HCICommand_Header_t) + { + OpCode: (OGF_LINK_CONTROL | OCF_LINK_CONTROL_LINK_KEY_REQUEST_NEG_REPLY), + ParameterLength: sizeof(BT_HCICommand_LinkKeyNAKResp_t), + }; + + /* Copy over the temporary BT device address saved from the Link Key Request event */ + BT_HCICommand_LinkKeyNAKResp_t LinkKeyNAKParams; + memcpy(LinkKeyNAKParams.RemoteAddress, Bluetooth_TempDeviceAddress, sizeof(LinkKeyNAKParams.RemoteAddress)); + + /* Send the command to transmit the link key NAK to the receiver */ + Bluetooth_SendHCICommand(&HCICommandHeader, &LinkKeyNAKParams, sizeof(BT_HCICommand_LinkKeyNAKResp_t)); - Bluetooth_HCIProcessingState = Bluetooth_ProcessEvents; + Bluetooth_State.CurrentHCIState = Bluetooth_ProcessEvents; break; } } -static uint8_t Bluetooth_SendHCICommand(void* Parameters, uint16_t ParameterLength) +/** Sends a Bluetooth HCI control command to the attached Bluetooth device. + * + * \param[in] HCICommandHeader HCI command header to send to the attached device + * \param[in] Parameters Pointer to the source of the control parameters (if any) + * \param[in] ParameterLength Length of the parameters to send in bytes + * + * \return A value from the USB_Host_SendControlErrorCodes_t enum. + */ +static uint8_t Bluetooth_SendHCICommand(const BT_HCICommand_Header_t* const HCICommandHeader, const void* Parameters, const uint16_t ParameterLength) { /* Need to reserve the amount of bytes given in the header for the complete payload */ - uint8_t CommandBuffer[sizeof(HCICommandHeader) + HCICommandHeader.ParameterLength]; + uint8_t CommandBuffer[sizeof(BT_HCICommand_Header_t) + HCICommandHeader->ParameterLength]; USB_ControlRequest = (USB_Request_Header_t) { @@ -251,14 +382,14 @@ static uint8_t Bluetooth_SendHCICommand(void* Parameters, uint16_t ParameterLeng }; /* Copy over the HCI command header to the allocated buffer */ - memcpy(CommandBuffer, &HCICommandHeader, sizeof(HCICommandHeader)); + memcpy(CommandBuffer, HCICommandHeader, sizeof(BT_HCICommand_Header_t)); - /* Zero out the parameter section of the response to ensure that any padding bytes do not expose private RAM contents */ - memset(&CommandBuffer[sizeof(HCICommandHeader)], 0x00, HCICommandHeader.ParameterLength); + /* Zero out the parameter section of the response so that all padding bytes are known to be zero */ + memset(&CommandBuffer[sizeof(BT_HCICommand_Header_t)], 0x00, HCICommandHeader->ParameterLength); /* Copy over the command parameters (if any) to the command buffer - note, the number of actual source parameter bytes may differ to those in the header; any difference in length is filled with 0x00 padding bytes */ - memcpy(&CommandBuffer[sizeof(HCICommandHeader)], Parameters, ParameterLength); + memcpy(&CommandBuffer[sizeof(BT_HCICommand_Header_t)], Parameters, ParameterLength); Pipe_SelectPipe(PIPE_CONTROLPIPE); return USB_Host_SendControlRequest(CommandBuffer);