Bluetooth Serieller Port Status-Abfrage

[TERWI]

... ich bin jetzt minimal weiter gekommen ...
Hier mal 2 Proceduren die ich zum testen nutze:

Delphi-Quellcode:

procedure TBT.Check_Devs_WinAPI();
var
  i, ii              : integer;
  RadioHandle,
  DeviceHandle       : THandle;
  FindHandle         : HBLUETOOTH_RADIO_FIND;
  BtFrp              : TBlueToothFindRadioParams;
  RadioInfo          : BLUETOOTH_RADIO_INFO;
  DeviceInfo         : BLUETOOTH_DEVICE_INFO;
  DeviceSearchParams : BLUETOOTH_DEVICE_SEARCH_PARAMS;
  numServices        : DWORD;
  GUIDList           : array[0..31] of TGUID;
begin
  Log('Check_Devs', '===== ... by WinAPI / Jedi =====');
  BtFrp.dwSize      := SizeOf(BtFrp);
  DeviceInfo.dwSize := SizeOf(DeviceInfo);
  RadioInfo.dwSize  := SizeOf(RadioInfo);
  FindHandle := BluetoothFindFirstRadio(@BtFrp, RadioHandle);
  if (FindHandle = 0) then
  begin
    LOG('Check_Devs', ' --- NO BT-RADIO FOUND');
    exit;
  end;
  repeat
    BluetoothEnableDiscovery(RadioHandle, True);
    with DeviceSearchParams do
    begin
      dwSize := SizeOf(DeviceSearchParams);
      fReturnAuthenticated := false;
      fReturnRemembered := true;
      fReturnUnknown := true; // false;
      fReturnConnected := false;
      fIssueInquiry := false;
      hRadio := RadioHandle;
    end;
    DeviceHandle := BluetoothFindFirstDevice(DeviceSearchParams, DeviceInfo);
    if DeviceHandle = 0 then continue;
    repeat
      if BluetoothGetDeviceInfo(RadioHandle, DeviceInfo) = ERROR_SUCCESS then
      begin
        BluetoothUpdateDeviceRecord(DeviceInfo);
        LOG('Check_Devs', ' -> ' + DeviceInfo.szName + ' | ' +
                          'CON: ' + booltostr(DeviceInfo.fConnected, true) + ' | ' +
                          'REM: ' + booltostr(DeviceInfo.fRemembered, true) + ' | ' +
                          'AUTH: ' + booltostr(DeviceInfo.fAuthenticated, true));
        numServices := 32;
        if (BluetoothEnumerateInstalledServices(RadioHandle,
                                            @DeviceInfo,
                                            numServices,
                                            @GUIDList) = ERROR_SUCCESS) then
        begin
          LOG('Check_Devs', 'Num. GUIDs: ' + inttostr(numServices));
          for i := 1 to numServices do
          begin
            LOG('Check_Devs', GUIDtoString(GUIDList[i-1]));
            if IsEqualGUID(GUIDList[i-1], GUID_SerialPort) then
            begin
              LOG('Check_Devs', '... HAS SERIAL-PORT !');
            end;
          end;
        end;
      end;
    until not BluetoothFindNextDevice(DeviceHandle, DeviceInfo);
    BluetoothFindDeviceClose(DeviceHandle)
  until not (BluetoothFindNextRadio(FindHandle, RadioHandle));
  BluetoothFindRadioClose(FindHandle);
end;

Delphi-Quellcode:

procedure TBT.Check_Devs_SysBTH();
var
  i, ii   : integer;
  Device  : TBluetoothDevice;
  SrvList : TBluetoothServiceList;
  Srv     : TBluetoothService;
begin
  Log('Check_Devs', '===== ... by System.Bluetooth =====');
  FPairedDevices := FManager.GetPairedDevices;
  for i := 1 to FPairedDevices.Count do
  begin
    Device := FPairedDevices[i - 1];
    Log('Check_Devs', '-> ' + Device.DeviceName + ' | State: ' +
                      inttostr(ord(Device.State)));
    Application.ProcessMessages;
    inttostr(ord(Device.State));
    SrvList := Device.GetServices;
    LOG('Check_Devs', 'Num. GUIDs: ' + inttostr(SrvList.Count));
    for ii := 1 to SrvList.Count do
    begin
      Srv := SrvList[ii - 1];
      LOG('Check_Devs', GUIDtoString(Srv.UUID));
      if IsEqualGUID(Srv.UUID, GUID_SerialPort) then
      begin
        LOG('Check_Devs', '... HAS SERIAL-PORT !');
      end;
    end;
  end;
end;

Der Auszug aus dem LOG sieht dann so aus:

Zitat:

[19:32:50:059] [BT - Check_Devs]: ===== ... by WinAPI / Jedi =====
[19:32:50:074] [BT - Check_Devs]: -> OBDII | CON: False | REM: True | AUTH: True
[19:32:50:074] [BT - Check_Devs]: Num. GUIDs: 2
[19:32:50:074] [BT - Check_Devs]: {00001101-0000-1000-8000-00805F9B34FB}
[19:32:50:074] [BT - Check_Devs]: ... HAS SERIAL-PORT !
[19:32:50:074] [BT - Check_Devs]: {0000110E-0000-1000-8000-00805F9B34FB}
[19:32:50:074] [BT - Check_Devs]: -> OBDII | CON: False | REM: True | AUTH: True
[19:32:50:074] [BT - Check_Devs]: Num. GUIDs: 2
[19:32:50:074] [BT - Check_Devs]: {00001101-0000-1000-8000-00805F9B34FB}
[19:32:50:074] [BT - Check_Devs]: ... HAS SERIAL-PORT !
[19:32:50:074] [BT - Check_Devs]: {00001200-0000-1000-8000-00805F9B34FB}
[19:32:50:074] [BT - Check_Devs]: -> Galaxy J7 | CON: False | REM: True | AUTH: True
[19:32:50:074] [BT - Check_Devs]: Num. GUIDs: 12
[19:32:50:074] [BT - Check_Devs]: {00001105-0000-1000-8000-00805F9B34FB}
[19:32:50:074] [BT - Check_Devs]: {0000110A-0000-1000-8000-00805F9B34FB}
[19:32:50:074] [BT - Check_Devs]: {0000110C-0000-1000-8000-00805F9B34FB}
[19:32:50:074] [BT - Check_Devs]: {0000110E-0000-1000-8000-00805F9B34FB}
[19:32:50:074] [BT - Check_Devs]: {00001112-0000-1000-8000-00805F9B34FB}
[19:32:50:074] [BT - Check_Devs]: {00001115-0000-1000-8000-00805F9B34FB}
[19:32:50:074] [BT - Check_Devs]: {00001116-0000-1000-8000-00805F9B34FB}
[19:32:50:074] [BT - Check_Devs]: {0000111F-0000-1000-8000-00805F9B34FB}
[19:32:50:074] [BT - Check_Devs]: {0000112F-0000-1000-8000-00805F9B34FB}
[19:32:50:074] [BT - Check_Devs]: {00001132-0000-1000-8000-00805F9B34FB}
[19:32:50:074] [BT - Check_Devs]: {00001800-0000-1000-8000-00805F9B34FB}
[19:32:50:074] [BT - Check_Devs]: {00001801-0000-1000-8000-00805F9B34FB}
[19:32:50:074] [BT - Check_Devs]: -> EP650 | CON: True | REM: True | AUTH: True
[19:32:50:074] [BT - Check_Devs]: Num. GUIDs: 4
[19:32:50:074] [BT - Check_Devs]: {0000110B-0000-1000-8000-00805F9B34FB}
[19:32:50:074] [BT - Check_Devs]: {0000110C-0000-1000-8000-00805F9B34FB}
[19:32:50:074] [BT - Check_Devs]: {0000110E-0000-1000-8000-00805F9B34FB}
[19:32:50:074] [BT - Check_Devs]: {0000111E-0000-1000-8000-00805F9B34FB}

[19:32:50:074] [BT - Check_Devs]: ===== ... by System.Bluetooth =====
[19:32:50:074] [BT - Check_Devs]: -> OBDII | State: 1
[19:32:55:255] [BT - Check_Devs]: Num. GUIDs: 0
[19:32:55:255] [BT - Check_Devs]: -> OBDII | State: 1
[19:33:00:396] [BT - Check_Devs]: Num. GUIDs: 0
[19:33:00:396] [BT - Check_Devs]: -> Galaxy J7 | State: 1
[19:33:01:230] [BT - Check_Devs]: Num. GUIDs: 12
[19:33:01:230] [BT - Check_Devs]: {00001801-0000-1000-8000-00805F9B34FB}
[19:33:01:230] [BT - Check_Devs]: {00001800-0000-1000-8000-00805F9B34FB}
[19:33:01:230] [BT - Check_Devs]: {00001112-0000-1000-8000-00805F9B34FB}
[19:33:01:230] [BT - Check_Devs]: {0000111F-0000-1000-8000-00805F9B34FB}
[19:33:01:230] [BT - Check_Devs]: {0000110C-0000-1000-8000-00805F9B34FB}
[19:33:01:230] [BT - Check_Devs]: {0000110A-0000-1000-8000-00805F9B34FB}
[19:33:01:230] [BT - Check_Devs]: {0000110E-0000-1000-8000-00805F9B34FB}
[19:33:01:230] [BT - Check_Devs]: {00001116-0000-1000-8000-00805F9B34FB}
[19:33:01:230] [BT - Check_Devs]: {00001115-0000-1000-8000-00805F9B34FB}
[19:33:01:230] [BT - Check_Devs]: {0000112F-0000-1000-8000-00805F9B34FB}
[19:33:01:230] [BT - Check_Devs]: {00001132-0000-1000-8000-00805F9B34FB}
[19:33:01:230] [BT - Check_Devs]: {00001105-0000-1000-8000-00805F9B34FB}
[19:33:01:230] [BT - Check_Devs]: -> EP650 | State: 2
[19:33:03:068] [BT - Check_Devs]: Num. GUIDs: 5
[19:33:03:068] [BT - Check_Devs]: {0000111E-0000-1000-8000-00805F9B34FB}
[19:33:03:068] [BT - Check_Devs]: {00001108-0000-1000-8000-00805F9B34FB}
[19:33:03:068] [BT - Check_Devs]: {0000110B-0000-1000-8000-00805F9B34FB}
[19:33:03:068] [BT - Check_Devs]: {0000110E-0000-1000-8000-00805F9B34FB}
[19:33:03:068] [BT - Check_Devs]: {0000110C-0000-1000-8000-00805F9B34FB}

Die beiden "OBDII" sind KTZ-Adapter - nicht in Reichweite (bzw. nicht in Betrieb).
"Galaxy J7" ist mein Handy - BT ist EIN, aber anscheinend nicht connected --- ABER ANSCHEINEND LESBAR IN REICHWEITE !.
"EP650" ist mein BT-Kopfhörer - ist EIN und anscheinend connected (er spielt den Sound vom Schleppi)
Alle Geräte sind ge-PAIRED !

Man beachte die Zeiten im LOG !
- via WinAPI ist das i.d.R: < 20 ms fertig,es wird alles (bekannte) gelistet.
- via System.Bluetooth braucht's:
-- ca. 1 Sek. um die GUIDs zu lesen / anzuzeigen (WENN GERÄT IN RECHWEITE UND "ON")
-- ca. 5 Sek. zum Timeout, wenn Gerät aus / nicht erreichbar - ES WERDEN KEINE GUIDs ANGEZEIGT !

So weit so gut .....
als KRÜCKE sicherlich nutzbar & hilfreich !
Aber das kann doch kein "Industrie-Standard" sein ???
Oder haben die Schergen um Billy Boy Gates da wieder (immer noch) was vergessen ?

Mein FAZIT bisher:
Da kann ich auch genau so gut für die ermittelten Ser-COMs für BT aus der REGISTRY "mal eben schnell" ein "OPEN" versuchen.
.... das dauert auch jeweils ca. 5 Sekunden.
D.h.: Kein Zeitvorteil, aber mehr Aufwand mit dem Blauzahn.