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Lazarus Pascal Discussion :

Bluetooth LE, protocole GATT : des compos ou des tutos ?


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Lazarus Pascal

  1. #1
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    Par défaut Bluetooth LE, protocole GATT : des compos ou des tutos ?
    Bjr à tous,

    Je recherche un compo ou de la doc sur l'utilisation du Bluetooth LE, protocole GATT

    Mis à part:
    - un composant BT exclusivement pour Linux
    - une floppée de liens morts
    - des composants hors de prix (TMS),

    je ne trouve quasiment rien.

  2. #2
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    Par défaut WinBluetoothLE: Semble répondre à mes questions sous Windows, mais comment l'utiliser
    Citation Envoyé par JP CASSOU Voir le message
    Bjr à tous,

    Je recherche un compo ou de la doc sur l'utilisation du Bluetooth LE, protocole GATT

    Mis à part:
    - un composant BT exclusivement pour Linux
    - une floppée de liens morts
    - des composants hors de prix (TMS),

    je ne trouve quasiment rien.
    Je viens de trouver un fichier WinBluetoothLE.pas contenant les prototypes des fonctions dédiées au Bluetooth LE.

    La doc MSDN de BluetoothAPIs indique que les fonctions suivantes ne sont pas utilisables avec le BLE:
    Code : Sélectionner tout - Visualiser dans une fenêtre à part
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    // ces fonctions ne détectent pas le BLE
    (*
    The BluetoothFindFirstDevice function does not find Bluetooth Low Energy (LE) devices.
    To access Bluetooth LE devices, use the Windows Runtime Bluetooth Low Energy APIs.
    The Windows Runtime APIs for Bluetooth work in both UWP and classic desktop apps.
    //*)
    function BluetoothFindFirstDevice(const pbtsp: BLUETOOTH_DEVICE_SEARCH_PARAMS; var pbtdi: BLUETOOTH_DEVICE_INFO)
    function BluetoothFindNextDevice(hFind: HBLUETOOTH_DEVICE_FIND; var pbtdi: BLUETOOTH_DEVICE_INFO): BOOL
    function BluetoothFindDeviceClose(hFind: HBLUETOOTH_DEVICE_FIND): BOOL; 
    function BluetoothRemoveDevice(const pAddress : BLUETOOTH_ADDRESS): BOOL;
    Toutes les fonctions BLE dédiées au GATT prennent en paramètre le handle du périphérique concerné.
    Ma question: Comment obtient-on ce handle ? Quelle sont les fonctions à utiliser ? Exemples .




    WinBluetoothLE.pas
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    {*******************************************************}
    {                                                       }
    {                Delphi Runtime Library                 }
    {                                                       }
    { Files: bluetoothleapis.h bthledef.h                   }
    {         Copyright (C) Microsoft Corporation.          }
    {         All Rights Reserved.                          }
    {                                                       }
    {       Translator: Embarcadero Technologies, Inc.      }
    { Copyright(c) 1995-2014 Embarcadero Technologies, Inc. }
    {                                                       }
    {*******************************************************}
    // Exemples: https://github.com/Appmethod/Appmethod115/blob/master/Object%20Pascal/Mobile%20Samples/Device%20Sensors%20and%20Services/Bluetooth/ExploreDevicesLE/uExploreDevices.pas
     
    {$WARNING .$EXTERNALSYM  n'est plus supporté}
    unit WinBluetoothLE;
    {$mode delphi}
    {$ALIGN ON}
    {$MINENUMSIZE 4}
    {$WEAKPACKAGEUNIT}
     
    interface
     
    uses
      Windows;
     
    //{$HPPEMIT '#include <bthledef.h>'}
    //{$HPPEMIT '#include <bluetoothleapis.h>'}
    const LIB_BluetoothAPIs = 'BluetoothAPIs.dll';
     
    //external LIB_BluetoothAPIs name
    // Noms des fonction Bluetouffe
    const BLUETOOTH_MAX_NAME_SIZE = 248;
    const
      PROC_NAME_BluetoothFindFirstDevice = 'BluetoothFindFirstDevice';
      PROC_NAME_BluetoothFindNextDevice  = 'BluetoothFindNextDevice';
      PROC_NAME_BluetoothFindDeviceClose = 'BluetoothFindDeviceClose';
      PROC_NAME_BluetoothRemoveDevice    = 'BluetoothRemoveDevice';
     
    // Noms des fonctions BLE
    const
      PROC_NAME_BluetoothGATTGetServices                 = 'BluetoothGATTGetServices';
      PROC_NAME_BluetoothGATTGetIncludedServices         = 'BluetoothGATTGetIncludedServices';
      PROC_NAME_BluetoothGATTGetCharacteristics          = 'BluetoothGATTGetCharacteristics';
      PROC_NAME_BluetoothGATTGetDescriptors              = 'BluetoothGATTGetDescriptors';
      PROC_NAME_BluetoothGATTGetCharacteristicValue      = 'BluetoothGATTGetCharacteristicValue';
      PROC_NAME_BluetoothGATTGetDescriptorValue          = 'BluetoothGATTGetDescriptorValue';
      PROC_NAME_BluetoothGATTBeginReliableWrite          = 'BluetoothGATTBeginReliableWrite';
      PROC_NAME_BluetoothGATTEndReliableWrite            = 'BluetoothGATTEndReliableWrite';
      PROC_NAME_BluetoothGATTAbortReliableWrite          = 'BluetoothGATTAbortReliableWrite';
      PROC_NAME_BluetoothGATTSetCharacteristicValue      = 'BluetoothGATTSetCharacteristicValue';
      PROC_NAME_BluetoothGATTSetDescriptorValue          = 'BluetoothGATTSetDescriptorValue';
      PROC_NAME_BluetoothGATTRegisterEvent               = 'BluetoothGATTRegisterEvent';
      PROC_NAME_BluetoothGATTUnregisterEvent             = 'BluetoothGATTUnregisterEvent';
     
    ///////////////////////////////
    ///
    ///  Start bthledef.h
    ///
    ///////////////////////////////
     
    { Bluetooth LE device interface GUID }
    const
      GUID_BLUETOOTHLE_DEVICE_INTERFACE           : TGUID = '{781AEE18-7733-4CE4-ADD0-91F41C67B592}';
      GUID_BLUETOOTH_GATT_SERVICE_DEVICE_INTERFACE: TGUID = '{6E3BB679-4372-40C8-9EAA-4509DF260CD8}';       { Bluetooth LE Service device interface GUID }
      BTH_LE_ATT_BLUETOOTH_BASE_GUID              : TGUID = '{00000000-0000-1000-8000-00805F9B34FB}';
     
     
    { ////////////////////////////////////////////////////////////////////////////// }
    { GATT Constants }
    { ////////////////////////////////////////////////////////////////////////////// }
     
    const
      E_BLUETOOTH_ATT_INVALID_HANDLE = $80650001;
      E_BLUETOOTH_ATT_READ_NOT_PERMITTED = $80650002;
      E_BLUETOOTH_ATT_WRITE_NOT_PERMITTED = $80650003;
      E_BLUETOOTH_ATT_INVALID_PDU = $80650004;
      E_BLUETOOTH_ATT_INSUFFICIENT_AUTHENTICATION = $80650005;
      E_BLUETOOTH_ATT_REQUEST_NOT_SUPPORTED = $80650006;
      E_BLUETOOTH_ATT_INVALID_OFFSET = $80650007;
      E_BLUETOOTH_ATT_INSUFFICIENT_AUTHORIZATION = $80650008;
      E_BLUETOOTH_ATT_PREPARE_QUEUE_FULL = $80650009;
      E_BLUETOOTH_ATT_ATTRIBUTE_NOT_FOUND = $8065000A;
      E_BLUETOOTH_ATT_ATTRIBUTE_NOT_LONG = $8065000B;
      E_BLUETOOTH_ATT_INSUFFICIENT_ENCRYPTION_KEY_SIZE = $8065000C;
      E_BLUETOOTH_ATT_INVALID_ATTRIBUTE_VALUE_LENGTH = $8065000D;
      E_BLUETOOTH_ATT_UNLIKELY = $8065000E;
      E_BLUETOOTH_ATT_INSUFFICIENT_ENCRYPTION = $8065000F;
      E_BLUETOOTH_ATT_UNSUPPORTED_GROUP_TYPE = $80650010;
      E_BLUETOOTH_ATT_INSUFFICIENT_RESOURCES = $80650011;
      E_BLUETOOTH_ATT_UNKNOWN_ERROR = $80651000;
     
    { Services UUIDs (Assigned numbers) }
     
    const
      BTH_LE_SERVICE_GAP  = $1800;
      BTH_LE_SERVICE_GATT = $1801;
     
     
    { GATT attribute types (Assigned numbers) }
     
      BTH_LE_GATT_ATTRIBUTE_TYPE_PRIMARY_SERVICE = $2800;
      BTH_LE_GATT_ATTRIBUTE_TYPE_SECONDARY_SERVICE = $2801;
      BTH_LE_GATT_ATTRIBUTE_TYPE_INCLUDE = $2802;
      BTH_LE_GATT_ATTRIBUTE_TYPE_CHARACTERISTIC = $2803;
     
    { GATT Characteristic Descriptors (Assigned numbers) }
     
      BTH_LE_GATT_CHARACTERISTIC_DESCRIPTOR_EXTENDED_PROPERTIES  = $2900;
      BTH_LE_GATT_CHARACTERISTIC_DESCRIPTOR_USER_DESCRIPTION     = $2901;
      BTH_LE_GATT_CHARACTERISTIC_DESCRIPTOR_CLIENT_CONFIGURATION = $2902;
      BTH_LE_GATT_CHARACTERISTIC_DESCRIPTOR_SERVER_CONFIGURATION = $2903;
      BTH_LE_GATT_CHARACTERISTIC_DESCRIPTOR_FORMAT               = $2904;
      BTH_LE_GATT_CHARACTERISTIC_DESCRIPTOR_AGGREGATE_FORMAT     = $2905;
     
     
     
    { GATT Characteristic Types (Assigned numbers) }
     
      BTH_LE_GATT_CHARACTERISTIC_TYPE_DEVICE_NAME                = $2A00;
      BTH_LE_GATT_CHARACTERISTIC_TYPE_APPEARANCE                 = $2A01;
      BTH_LE_GATT_CHARACTERISTIC_TYPE_PERIPHERAL_PRIVACY_FLAG    = $2A02;
      BTH_LE_GATT_CHARACTERISTIC_TYPE_RECONNECTION_ADDRESS       = $2A03;
      BTH_LE_GATT_CHARACTERISTIC_TYPE_PERIPHERAL_PREFERED_CONNECTION_PARAMETER = $2A04;
      BTH_LE_GATT_CHARACTERISTIC_TYPE_SERVICE_CHANGED                          = $2A05;
     
      BTH_LE_GAP_APPEARANCE_CATEGORY_OFFSET                                    = $6;
      BTH_LE_GAP_APPEARANCE_CATEGORY_MASK                                      = $3ff;
     
     
    function BTH_LE_GAP_APPEARANCE_GET_CATEGORY(a: Cardinal): Cardinal; inline;
    const
      BTH_LE_GAP_APPEARANCE_SUB_CATEGORY_MASK = $3f;
     
    function BTH_LE_GAP_APPEARANCE_GET_SUB_CATEGORY(a: Cardinal): Byte; inline;
     
    const
      BTH_LE_GAP_APPEARANCE_CATEGORY_PHONE = $0001;
      BTH_LE_GAP_APPEARANCE_CATEGORY_COMPUTER = $0002;
      BTH_LE_GAP_APPEARANCE_CATEGORY_WATCH = $0003;
      BTH_LE_GAP_APPEARANCE_CATEGORY_CLOCK = $0004;
      BTH_LE_GAP_APPEARANCE_CATEGORY_DISPLAY = $0005;
      BTH_LE_GAP_APPEARANCE_CATEGORY_REMOTE_CONTROL = $0006;
      BTH_LE_GAP_APPEARANCE_CATEGORY_EYE_GLASSES = $0007;
      BTH_LE_GAP_APPEARANCE_CATEGORY_TAG = $0008;
      BTH_LE_GAP_APPEARANCE_CATEGORY_KEYRING = $0009;
      BTH_LE_GAP_APPEARANCE_CATEGORY_MEDIA_PLAYER = $000a;
      BTH_LE_GAP_APPEARANCE_CATEGORY_BARCODE_SCANNER = $000b;
      BTH_LE_GAP_APPEARANCE_CATEGORY_THERMOMETER = $000c;
      BTH_LE_GAP_APPEARANCE_CATEGORY_HEART_RATE = $000d;
      BTH_LE_GAP_APPEARANCE_CATEGORY_BLOOD_PRESSURE = $000e;
      BTH_LE_GAP_APPEARANCE_CATEGORY_HID = $000f;
      BTH_LE_GAP_APPEARANCE_CATEGORY_GLUCOSE_METER = $0010;
      BTH_LE_GAP_APPEARANCE_CATEGORY_RUNNING_WALKING_SENSOR = $0011;
      BTH_LE_GAP_APPEARANCE_CATEGORY_CYCLING = $0012;
     
      BTH_LE_GAP_APPEARANCE_HID_SUBCATEGORY_KEYBOARD = $01;
      BTH_LE_GAP_APPEARANCE_HID_SUBCATEGORY_MOUSE = $02;
      BTH_LE_GAP_APPEARANCE_HID_SUBCATEGORY_JOYSTICK = $03;
      BTH_LE_GAP_APPEARANCE_HID_SUBCATEGORY_GAMEPAD = $04;
      BTH_LE_GAP_APPEARANCE_HID_SUBCATEGORY_DIGITIZER_TABLET = $05;
      BTH_LE_GAP_APPEARANCE_HID_SUBCATEGORY_CARD_READER = $06;
      BTH_LE_GAP_APPEARANCE_HID_SUBCATEGORY_DIGITAL_PEN = $07;
      BTH_LE_GAP_APPEARANCE_HID_SUBCATEGORY_BARCODE_SCANNER = $08;
     
     
    { GATT Included Services Default Maximum Nested Depth }
     
      BTH_LE_GATT_DEFAULT_MAX_INCLUDED_SERVICES_DEPTH = 3;
     
    { ////////////////////////////////////////////////////////////////////////////// }
    { ATT Constants }
    { ////////////////////////////////////////////////////////////////////////////// }
    { Transation timeout }
      BTH_LE_ATT_TRANSACTION_TIMEOUT = 30; { seconds }
     
    { Maximum size of any attribute value }
      BTH_LE_ATT_MAX_VALUE_SIZE = 512;
     
    { CID }
      BTH_LE_ATT_CID = $0004;
     
    { MTU }
      BTHLEENUM_ATT_MTU_MIN = 23;
      BTHLEENUM_ATT_MTU_MAX = $FFFF;
      BTHLEENUM_ATT_MTU_DEFAULT = BTHLEENUM_ATT_MTU_MIN;
      BTHLEENUM_ATT_MTU_INITIAL_NEGOTIATION = 525;
     
    { ////////////////////////////////////////////////////////////////////////////// }
    { ATT-specific Error Codes }
    { ////////////////////////////////////////////////////////////////////////////// }
     
      BTH_LE_ERROR_INVALID_HANDLE                             = $01;
      BTH_LE_ERROR_READ_NOT_PERMITTED                         = $02;
      BTH_LE_ERROR_WRITE_NOT_PERMITTED                        = $03;
      BTH_LE_ERROR_INVALID_PDU                                = $04;
      BTH_LE_ERROR_INSUFFICIENT_AUTHENTICATION                = $05;
      BTH_LE_ERROR_REQUEST_NOT_SUPPORTED                      = $06;
      BTH_LE_ERROR_INVALID_OFFSET                             = $07;
      BTH_LE_ERROR_INSUFFICIENT_AUTHORIZATION                 = $08;
      BTH_LE_ERROR_PREPARE_QUEUE_FULL                         = $09;
      BTH_LE_ERROR_ATTRIBUTE_NOT_FOUND                        = $0A;
      BTH_LE_ERROR_ATTRIBUTE_NOT_LONG                         = $0B;
      BTH_LE_ERROR_INSUFFICIENT_ENCRYPTION_KEY_SIZE           = $0C;
      BTH_LE_ERROR_INVALID_ATTRIBUTE_VALUE_LENGTH             = $0D;
      BTH_LE_ERROR_UNLIKELY                                   = $0E;
      BTH_LE_ERROR_INSUFFICIENT_ENCRYPTION                    = $0F;
      BTH_LE_ERROR_UNSUPPORTED_GROUP_TYPE                     = $10;
      BTH_LE_ERROR_INSUFFICIENT_RESOURCES                     = $11;
      BTH_LE_ERROR_UNKNOWN                                    = $1000;
     
    { ////////////////////////////////////////////////////////////////////////////// }
    { GATT Security and Other Flag-related Facilities }
    { ////////////////////////////////////////////////////////////////////////////// }
     
      BLUETOOTH_GATT_FLAG_NONE                                = $00000000;
      BLUETOOTH_GATT_FLAG_CONNECTION_ENCRYPTED                = $00000001;
      BLUETOOTH_GATT_FLAG_CONNECTION_AUTHENTICATED            = $00000002;
      BLUETOOTH_GATT_FLAG_FORCE_READ_FROM_DEVICE              = $00000004;
      BLUETOOTH_GATT_FLAG_FORCE_READ_FROM_CACHE               = $00000008;
      BLUETOOTH_GATT_FLAG_SIGNED_WRITE                        = $00000010;
      BLUETOOTH_GATT_FLAG_WRITE_WITHOUT_RESPONSE              = $00000020;
      BLUETOOTH_GATT_FLAG_RETURN_ALL                          = $00000040;
     
      BLUETOOTH_GATT_FLAG_VALID_MASK = BLUETOOTH_GATT_FLAG_NONE
     or            BLUETOOTH_GATT_FLAG_CONNECTION_ENCRYPTED
     or            BLUETOOTH_GATT_FLAG_CONNECTION_AUTHENTICATED
     or            BLUETOOTH_GATT_FLAG_FORCE_READ_FROM_DEVICE
     or            BLUETOOTH_GATT_FLAG_FORCE_READ_FROM_CACHE
     or            BLUETOOTH_GATT_FLAG_SIGNED_WRITE
     or            BLUETOOTH_GATT_FLAG_WRITE_WITHOUT_RESPONSE
     or            BLUETOOTH_GATT_FLAG_RETURN_ALL;
     
    function IS_BLUETOOTH_GATT_FLAG_VALID(f: Cardinal): Boolean; inline;
     
    { ////////////////////////////////////////////////////////////////////////////// }
    { GATT Structures }
    { ////////////////////////////////////////////////////////////////////////////// }
     
    type
      BLUETOOTH_GATT_EVENT_HANDLE = THandle;
      TBluetoothGattEventHandle = BLUETOOTH_GATT_EVENT_HANDLE;
      PBluetoothGattEventHandle = ^TBluetoothGattEventHandle;
     
      _BTH_LE_UUID = record
        IsShortUuid: Boolean;
        case Integer of
          0: (LongUuid: TGUID);
          1: (ShortUuid: USHORT);
          2: (ForceAlign4: Int32);
      end;
      BTH_LE_UUID = _BTH_LE_UUID;
      PBTH_LE_UUID = ^BTH_LE_UUID;
      TBthLeUuid = BTH_LE_UUID;
      PBthLeUuid = ^TBthLeUuid;
     
      _BTH_LE_GATT_SERVICE = record
        ServiceUuid: TBthLeUuid;
        AttributeHandle: USHORT;
      end;
      BTH_LE_GATT_SERVICE = _BTH_LE_GATT_SERVICE;
      PBTH_LE_GATT_SERVICE = ^BTH_LE_GATT_SERVICE;
      TBthLeGattService = BTH_LE_GATT_SERVICE;
      PBthLeGattService = ^TBthLEGattService;
     
    type
      BTH_LE_GATT_DESCRIPTOR_TYPE = (
        CharacteristicExtendedProperties  = 0,
        CharacteristicUserDescription     = 1,
        ClientCharacteristicConfiguration = 2,
        ServerCharacteristicConfiguration = 3,
        CharacteristicFormat              = 4,
        CharacteristicAggregateFormat     = 5,
        CustomDescriptor                  = 6
      );
      PBTH_LE_GATT_DESCRIPTOR_TYPE = ^BTH_LE_GATT_DESCRIPTOR_TYPE;
      TBthLeGattDescriptorType = BTH_LE_GATT_DESCRIPTOR_TYPE;
      PBthLeGattDescriptorType = ^TBthLeGattDescriptorType;
     
      _BTH_LE_GATT_CHARACTERISTIC = record
        ServiceHandle: USHORT;
        CharacteristicUuid: TBthLeUuid;
        AttributeHandle: USHORT;
        CharacteristicValueHandle: USHORT;
        IsBroadcastable: BOOLEAN;
        IsReadable: BOOLEAN;
        IsWritable: BOOLEAN;
        IsWritableWithoutResponse: BOOLEAN;
        IsSignedWritable: BOOLEAN;
        IsNotifiable: BOOLEAN;
        IsIndicatable: BOOLEAN;
        HasExtendedProperties: BOOLEAN;
      end;
      BTH_LE_GATT_CHARACTERISTIC = _BTH_LE_GATT_CHARACTERISTIC;
      PBTH_LE_GATT_CHARACTERISTIC = ^BTH_LE_GATT_CHARACTERISTIC;
      TBthLeGattCharacteristic = BTH_LE_GATT_CHARACTERISTIC;
      PBthLeGattCharacteristic = ^TBthLeGattCharacteristic;
     
      _BTH_LE_GATT_CHARACTERISTIC_VALUE = record
        DataSize: ULONG;
        Data: PByte;
        //Data: array [0..0] of byte;
      end;
      BTH_LE_GATT_CHARACTERISTIC_VALUE = _BTH_LE_GATT_CHARACTERISTIC_VALUE;
      PBTH_LE_GATT_CHARACTERISTIC_VALUE = ^BTH_LE_GATT_CHARACTERISTIC_VALUE;
      TBthLeGattCharacteristicValue = BTH_LE_GATT_CHARACTERISTIC_VALUE;
      PBthLeGattCharacteristicValue = ^TBthLeGattCharacteristicValue;
     
     
      BTH_LE_GATT_DESCRIPTOR = record
        ServiceHandle: USHORT;
        CharacteristicHandle: USHORT;
        DescriptorType: TBthLeGattDescriptorType;
        DescriptorUuid: TBthLeUuid;
        AttributeHandle: USHORT;
      end;
      _BTH_LE_GATT_DESCRIPTOR = BTH_LE_GATT_DESCRIPTOR;
      PBTH_LE_GATT_DESCRIPTOR = ^BTH_LE_GATT_DESCRIPTOR;
      TBthLeGattDescriptor = BTH_LE_GATT_DESCRIPTOR;
      PBthLeGattDescriptor = ^TBthLeGattDescriptor;
     
     
      AuxGattDescriptorType = record
        case BTH_LE_GATT_DESCRIPTOR_TYPE of
          CharacteristicExtendedProperties: (
            IsReliableWriteEnabled: BOOLEAN;
            IsAuxiliariesWritable: BOOLEAN;
          );
     
          ClientCharacteristicConfiguration: (
            IsSubscribeToNotification: BOOLEAN;
            IsSubscribeToIndication: BOOLEAN;
          );
     
          ServerCharacteristicConfiguration: (IsBroadcast: BOOLEAN);
     
          CharacteristicFormat: (
            Format: UCHAR;
            Exponent: ShortInt;
            &Unit: TBthLeUuid;
            NameSpace: UCHAR;
            Description: TBthLeUuid;
          );
      end;
     
      _BTH_LE_GATT_DESCRIPTOR_VALUE = record
        DescriptorType: TBthLeGattDescriptorType;
        DescriptorUuid: TBthLeUuid;
        DescriptorInfo: AuxGattDescriptorType;
        DataSize: ULONG;
        Data: PByte;
      end;
      BTH_LE_GATT_DESCRIPTOR_VALUE = _BTH_LE_GATT_DESCRIPTOR_VALUE;
      PBTH_LE_GATT_DESCRIPTOR_VALUE = ^BTH_LE_GATT_DESCRIPTOR_VALUE;
      TBthLeGattDescriptorValue = BTH_LE_GATT_DESCRIPTOR_VALUE;
      PBthLeGattDescriptorValue = ^TBthLeGattDescriptorValue;
     
      BTH_LE_GATT_EVENT_TYPE = (
        CharacteristicValueChangedEvent = 0
      );
      TBthLeGattEventType = BTH_LE_GATT_EVENT_TYPE;
     
     
    { Callback function signature for Bluetooth GATT events. }
     
    type
      PFNBLUETOOTH_GATT_EVENT_CALLBACK = procedure(
        EventType: TBthLeGattEventType; EventOutParameter: Pointer;
        Context: Pointer); cdecl;
      PFnBluetoothGattEventCallback = PFNBLUETOOTH_GATT_EVENT_CALLBACK;
     
    { Structure associated with a CharacteristicValueChanged Event }
     
      PBluetoothGattValueChangedEventRegistration = ^TBluetoothGattValueChangedEventRegistration;
      BLUETOOTH_GATT_VALUE_CHANGED_EVENT_REGISTRATION = record
        NumCharacteristics: USHORT;
        Characteristics: array [0..0] of TBthLeGattCharacteristic;
      end;
      _BLUETOOTH_GATT_VALUE_CHANGED_EVENT_REGISTRATION = BLUETOOTH_GATT_VALUE_CHANGED_EVENT_REGISTRATION;
      PBLUETOOTH_GATT_VALUE_CHANGED_EVENT_REGISTRATION = ^BLUETOOTH_GATT_VALUE_CHANGED_EVENT_REGISTRATION;
      TBluetoothGattValueChangedEventRegistration = BLUETOOTH_GATT_VALUE_CHANGED_EVENT_REGISTRATION;
     
      BLUETOOTH_GATT_VALUE_CHANGED_EVENT = record
        ChangedAttributeHandle: USHORT;
        CharacteristicValueDataSize: size_t;
        CharacteristicValue: PBthLeGattCharacteristicValue;
      end;
      _BLUETOOTH_GATT_VALUE_CHANGED_EVENT = BLUETOOTH_GATT_VALUE_CHANGED_EVENT;
      PBLUETOOTH_GATT_VALUE_CHANGED_EVENT = ^BLUETOOTH_GATT_VALUE_CHANGED_EVENT;
      TBluetoothGattValueChangedEvent = BLUETOOTH_GATT_VALUE_CHANGED_EVENT;
      PBluetoothGattValueChangedEvent = ^TBluetoothGattValueChangedEvent;
     
      BTH_LE_GATT_RELIABLE_WRITE_CONTEXT = ULONG64;
      PBTH_LE_GATT_RELIABLE_WRITE_CONTEXT = ^BTH_LE_GATT_RELIABLE_WRITE_CONTEXT;
      TBthLeGattReliableWriteContext = BTH_LE_GATT_RELIABLE_WRITE_CONTEXT;
      PBthLeGattReliableWriteContext = ^TBthLeGattReliableWriteContext;
     
     
    function IsBthLEUuidMatch(uuid1: TBthLeUuid; uuid2: TBthLeUuid): Boolean; inline;
    ///////////////////////////////
    ///
    ///  End bthledef.h
    ///
    ///////////////////////////////
    type
      BTH_ADDR = UInt64;
      BOOL = Longbool;
     
      SYSTEMTIME = record
        wYear          : Word;
        wMonth         : Word;
        wDayOfWeek     : Word;
        wDay           : Word;
        wHour          : Word;
        wMinute        : Word;
        wSecond        : Word;
        wMilliseconds  : Word;
      end;
     
      BLUETOOTH_ADDRESS = record
        case Integer of
          0: (ullLong: BTH_ADDR);
          1: (rgBytes: array [0..5] of Byte);
      end;
     
      BLUETOOTH_DEVICE_SEARCH_PARAMS = record
        dwSize               : DWORD;
        fReturnAuthenticated : BOOL;
        fReturnRemembered    : BOOL;
        fReturnUnknown       : BOOL;
        fReturnConnected     : BOOL;
        fIssueInquiry        : BOOL;
        cTimeoutMultiplier   : Byte;
        hRadio               : THandle;
      end;
     
      BLUETOOTH_DEVICE_INFO = record
        dwSize          : DWORD;
        Address         : BLUETOOTH_ADDRESS;
        ulClassofDevice : DWORD;
        fConnected      : BOOL;
        fRemembered     : BOOL;
        fAuthenticated  : BOOL;
        stLastSeen      : SYSTEMTIME;
        stLastUsed      : SYSTEMTIME;
        szName          : array[0..BLUETOOTH_MAX_NAME_SIZE-1] of WideChar;
      end;
     
      BLUETOOTH_FIND_RADIO_PARAMS = record
        dwSize:  DWORD;
      end;
     
      HBLUETOOTH_DEVICE_FIND = THandle;
     
    // ces fonctions ne détectent pas le BLE
    (*
    The BluetoothFindFirstDevice function does not find Bluetooth Low Energy (LE) devices.
    To access Bluetooth LE devices, use the Windows Runtime Bluetooth Low Energy APIs.
    The Windows Runtime APIs for Bluetooth work in both UWP and classic desktop apps.
    //*)
    function BluetoothFindFirstDevice(const pbtsp: BLUETOOTH_DEVICE_SEARCH_PARAMS; var pbtdi: BLUETOOTH_DEVICE_INFO): HBLUETOOTH_DEVICE_FIND; stdcall;
       external LIB_BluetoothAPIs name PROC_NAME_BluetoothFindFirstDevice;
    function BluetoothFindNextDevice(hFind: HBLUETOOTH_DEVICE_FIND; var pbtdi: BLUETOOTH_DEVICE_INFO): BOOL; stdcall;
       external LIB_BluetoothAPIs name PROC_NAME_BluetoothFindNextDevice;
    function BluetoothFindDeviceClose(hFind: HBLUETOOTH_DEVICE_FIND): BOOL; stdcall;
       external LIB_BluetoothAPIs name PROC_NAME_BluetoothFindDeviceClose;
    function BluetoothRemoveDevice(const pAddress : BLUETOOTH_ADDRESS): BOOL; stdcall;
       external LIB_BluetoothAPIs name PROC_NAME_BluetoothRemoveDevice;
     
    //function BluetoothFindFirstRadio (const pbtfrp: BLUETOOTH_FIND_RADIO_PARAMS; phRadio: PHANDLE):external LIB_BluetoothAPIs name PROC_NAME_BluetoothFindFirstDevice;
    ///////////////////////////////
    ///
    ///  Start BluetoothLEAPIs.h
    ///
    ///////////////////////////////
    function BluetoothGATTGetServices(hDevice: THandle; ServicesBufferCount : Word;
      ServicesBuffer: PBthLeGattService; var ServicesBufferActual: Word; Flags: Cardinal): HRESULT; stdcall;
      external LIB_BluetoothAPIs name PROC_NAME_BluetoothGATTGetServices;
     
    function BluetoothGATTGetIncludedServices(hDevice: THandle; ParentService: PBthLeGattService;
      IncludedServicesBufferCount: Word; IncludedServicesBuffer: PBthLeGattService;
      var IncludedServicesBufferActual: Word; Flags: Cardinal): HRESULT; stdcall;
      external LIB_BluetoothAPIs name PROC_NAME_BluetoothGATTGetIncludedServices;
     
    function BluetoothGATTGetCharacteristics(hDevice: THandle; Service: PBthLeGattService;
      CharacteristicsBufferCount : Word; CharacteristicsBuffer: PBthLeGattCharacteristic;
      var CharacteristicsBufferActual : Word; Flags   : Cardinal): HRESULT; stdcall;
      external LIB_BluetoothAPIs name PROC_NAME_BluetoothGATTGetCharacteristics;
     
    function BluetoothGATTGetDescriptors(hDevice: THandle; var Characteristic: TBthLeGattCharacteristic;
      DescriptorsBufferCount: Word; DescriptorsBuffer: PBthLeGattDescriptor;
      var DescriptorsBufferActual: Word; Flags: Cardinal): HRESULT; stdcall;
      external LIB_BluetoothAPIs name PROC_NAME_BluetoothGATTGetDescriptors;
     
    function BluetoothGATTGetCharacteristicValue(hDevice: THandle; var Characteristic: TBthLeGattCharacteristic;
      CharacteristicValueDataSize: Cardinal; CharacteristicValue: PBthLeGattCharacteristicValue;
      CharacteristicValueSizeRequired: PWord; Flags: ULONG): HRESULT; stdcall;
      external LIB_BluetoothAPIs name PROC_NAME_BluetoothGATTGetCharacteristicValue;
     
    function BluetoothGATTGetDescriptorValue(hDevice: THandle; var Descriptor: TBthLeGattDescriptor;
      DescriptorValueDataSize: Cardinal; DescriptorValue: PBthLeGattDescriptorValue;
      DescriptorValueSizeRequired: PWord; Flags: Cardinal): HRESULT; stdcall;
      external LIB_BluetoothAPIs name PROC_NAME_BluetoothGATTGetDescriptorValue;
     
     
    function BluetoothGATTBeginReliableWrite(hDevice: THandle; var ReliableWriteContext: TBthLeGattReliableWriteContext; Flags: Cardinal): HRESULT; stdcall;
      external LIB_BluetoothAPIs name PROC_NAME_BluetoothGATTBeginReliableWrite;
     
     
    function BluetoothGATTEndReliableWrite(hDevice: THandle; ReliableWriteContext: TBthLeGattReliableWriteContext;   Flags: Cardinal): HRESULT; stdcall;
      external LIB_BluetoothAPIs name PROC_NAME_BluetoothGATTEndReliableWrite;
     
    function BluetoothGATTAbortReliableWrite(hDevice: THandle; ReliableWriteContext: TBthLeGattReliableWriteContext;  Flags: Cardinal): HRESULT; stdcall;
      external LIB_BluetoothAPIs name PROC_NAME_BluetoothGATTAbortReliableWrite;
     
    function BluetoothGATTSetCharacteristicValue(hDevice: THandle; var Characteristic: TBthLeGattCharacteristic;
      CharacteristicValue: PBthLeGattCharacteristicValue; ReliableWriteContext: TBthLeGattReliableWriteContext;
      Flags: Cardinal): HRESULT; stdcall;
      external LIB_BluetoothAPIs name PROC_NAME_BluetoothGATTSetCharacteristicValue;
     
    function BluetoothGATTSetDescriptorValue(hDevice: THandle; var Descriptor: TBthLeGattDescriptor;
      DescriptorValue: PBthLeGattDescriptorValue; Flags: Cardinal): HRESULT; stdcall;
      external LIB_BluetoothAPIs name PROC_NAME_BluetoothGATTSetDescriptorValue;
     
    function BluetoothGATTRegisterEvent(hService: THandle; EventType: TBthLeGattEventType; EventParameterIn: Pointer;
      Callback: PFnBluetoothGattEventCallback; CallbackContext: Pointer;
      var EventHandle: TBluetoothGattEventHandle; Flags: Cardinal): HRESULT; stdcall;
      external LIB_BluetoothAPIs name PROC_NAME_BluetoothGATTRegisterEvent;
     
    function BluetoothGATTUnregisterEvent(EventHandle: TBluetoothGattEventHandle; Flags: Cardinal): HRESULT; stdcall;
      external LIB_BluetoothAPIs name PROC_NAME_BluetoothGATTUnregisterEvent;
     
     
    ///////////////////////////////
    ///
    ///  End BluetoothLEAPIs.h
    ///
    ///////////////////////////////
     
    implementation
     
    uses
      SysUtils;
     
    function BTH_LE_GAP_APPEARANCE_GET_CATEGORY(a: Cardinal): Cardinal;
    begin
      Result := (a shr BTH_LE_GAP_APPEARANCE_CATEGORY_OFFSET) and BTH_LE_GAP_APPEARANCE_CATEGORY_MASK;
    end;
     
    function BTH_LE_GAP_APPEARANCE_GET_SUB_CATEGORY(a: Cardinal): Byte;
    begin
      Result := a and BTH_LE_GAP_APPEARANCE_SUB_CATEGORY_MASK;
    end;
     
    function IS_BLUETOOTH_GATT_FLAG_VALID(f: Cardinal): Boolean;
    begin
      Result := (f and not BLUETOOTH_GATT_FLAG_VALID_MASK) = 0;
    end;
     
    function IsBthLEUuidMatch(uuid1: TBthLeUuid; uuid2: TBthLeUuid): Boolean;
    var
      tempLongUuid: TBthLeUuid;
      function IsSameLongUUID(const LU1, LU2: TGUID): boolean;
      var
        EWE1, EWE2: TBytes;
        i: Integer;
      begin
        // Comparaison en mode ACBM (abruti, con, bête et méchant)
        EWE1 := LU1.ToByteArray();
        EWE2 := LU2.ToByteArray();
        if (high(EWE1) <> high(EWE2)) then exit(false); // longueurs différentes ? OK je sors
        Result := True;
        for i := 0 to High(EWE1) do
        begin
          if (EWE1[i] = EWE1[i]) then
            Result := Result AND True
          else // lazy eval
            exit(False);
        end;
      end;
    begin
      Result := False;
      tempLongUuid := Default(TBthLeUuid);
      tempLongUuid.IsShortUuid := False;
      tempLongUuid.LongUuid := BTH_LE_ATT_BLUETOOTH_BASE_GUID;
     
      if (uuid1.IsShortUuid and uuid2.IsShortUuid) then
        Result := uuid1.ShortUuid = uuid2.ShortUuid
      else  if ((not uuid1.IsShortUuid) and (not uuid2.IsShortUuid)) then
        Result := IsSameLongUUID(uuid1.LongUuid, uuid2.LongUuid)
      else if (uuid1.IsShortUuid) then
      begin
        Inc(tempLongUuid.LongUuid.D1, uuid1.ShortUuid);
        Result := IsSameLongUUID(tempLongUuid.LongUuid, uuid2.LongUuid);
      end
      else if (uuid2.IsShortUuid) then
      begin
        Inc(tempLongUuid.LongUuid.D1, uuid2.ShortUuid);
        Result := IsSameLongUUID(tempLongUuid.LongUuid, uuid1.LongUuid);
      end;
    end;
    end.

  3. #3
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    Par défaut
    Hello JP je ne sais pas si cela t'aidera il semblerai possible de se connecter au bluetooth via un socket https://docs.microsoft.com/fr-fr/sam...ection-sample/ et RFComm https://docs.microsoft.com/fr-fr/sam...othrfcommchat/

    Sinon pour le handle cf https://docs.microsoft.com/en-us/win...hgetdeviceinfo
    • "L'Homme devrait mettre autant d'ardeur à simplifier sa vie qu'il met à la compliquer" - Henri Bergson
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  4. #4
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    Par défaut Lazarus et Bluetooth LE: Sans exemples = hard ++++
    Lazarus et Bluetooth LE: Sans exemples = hard ++++

    J'avance un peu dans le Bluetooth LE:

    La fonction BluetoothFindFirstRadio(pbtfrp, phRadio) retourne le handle du dongle BT s'il est trouvé (si je retire ce dongle, cette fonction retourne 0)

    Je cherche maintenant à récupérer les caractéristiques du dongle ...

    Code : Sélectionner tout - Visualiser dans une fenêtre à part
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    function TBRIC4.ListerLesDevices(): DWORD;
    var
      phRadio: HANDLE;
      pbtfrp: PBlueToothFindRadioParams;
      PRadioInfo: BLUETOOTH_RADIO_INFO;
      NbDevicesFound: Integer;
      EWE: DWORD;
      STR: string;
      RName: WideString;
      BTA, BTO: Int64;
    begin
      AfficherMessageErreur(format('%s.ListerLesDevices()', [ClassName]));
      {$IFDEF MSWINDOWS}
      result := 0;
      phRadio := 0;
      New(pbtfrp);
      pbtfrp^.dwSize := SizeOf(BLUETOOTH_FIND_RADIO_PARAMS);
     
      AfficherMessageErreur(format('size of BLUETOOTH_FIND_RADIO_PARAMS = %d', [pbtfrp.dwSize]));
      FHandleBTAdapterFound := BluetoothFindFirstRadio(pbtfrp, phRadio);
      AfficherMessageErreur(format('Handle : %d - phRadio = %d', [FHandleBTAdapterFound, phRadio]));
      if (FHandleBTAdapterFound <> 0) then
      begin
        NbDevicesFound := 0;
        AfficherMessageErreur('Adaptateur BT reconnu - Liste des devices:');
        repeat
          NbDevicesFound +=1;
     
          EWE := BluetoothGetRadioInfo(phRadio, PRadioInfo);
     
          BTA := Int64(PRadioInfo.address.ullLong);
          STR := BTAddressToStr(BTA);
          BTO := StrtoBTaddress(STR);
          RName := WideString(PRadioInfo.szName);
     
          AfficherMessageErreur(format('  Device %d: (%X = %s = %X) - %s', [
                                       NbDevicesFound,
                                       BTA, STR, BTO,
                                       RName]));
     
     
        until (not BluetoothFindNextRadio(FHandleBTAdapterFound, phRadio));
     
        AfficherMessageErreur('===========');
        BluetoothFindRadioClose(FHandleBTAdapterFound);
        AfficherMessageErreur(format('Adapter BT reconnu (handle: 0x%X)', [FHandleBTAdapterFound]));
      end else
      begin
        AfficherMessageErreur('Adapter BT not found');
      end;
      Result := GetLastError;
      {$ENDIF MSWINDOWS}
      {$ifdef LINUX}
     
      {$endif LINUX}
      AfficherMessageErreur(format('Erreur: %d', [GetLastError]));
      AfficherMessageErreur('');
    end;

    Je suis d'ailleurs surpris qu'il n'y ait pas encore de composant Bluetooth ...

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