Android, (classic) Bluetooth SPP - QBluetoothDeviceInfo - encode ENUMs into Bits

[ekkescorner]

QBluetoothDeviceInfo::QBluetoothDeviceInfo(const QBluetoothAddress &address, const QString &name, quint32 classOfDevice)

My problem is with encoding classOfDevice into the following format:

Bits	Size	Description
0 - 1	2	Unused, set to 0.
2 - 7	6	Minor device class.
8 - 12	5	Major device class.
13 - 23	11	Service class.

I don’t have a Service class, but Minor and Major Device classes. These are the possible values (ENUMs):

MAJOR CLASS always

QBluetoothDeviceInfo::ImagingDevice	(6)

MINOR CLASS - one of this:

QBluetoothDeviceInfo::UncategorizedImagingDevice	(0)	
QBluetoothDeviceInfo::ImageScanner	(0x10)	
QBluetoothDeviceInfo::ImagePrinter	(0x20)

Now my question:
How can I encode those ENUM values into the quint32 classOfDevice ?

... I’m always fighting with stuff like this ;-)

thanks for hints

[jsulm]

@ekkescorner Like

if (deviceInfo == QBluetoothDeviceInfo::ImagingDevice)
     classOfDevice = 0x00000100; // Set bit 8
else ...

?

[J.Hilk]

@jsulm or since it's now allowed (since c++17 iirc)

if (deviceInfo == QBluetoothDeviceInfo::ImagingDevice)
     classOfDevice = 0b00000000000000000000000010000000; // Set bit 8
else ...

you can see it directly, admittedly for an int32 lot to type but super nice for int16 where I use it regularly

[ekkescorner]

@jsulm @J-Hilk thx - will try it

[ekkescorner]

@jsulm so I figured it out :)

classOfDevice = 0x000600; // MAJOR 6, MINOR 0
classOfDevice = 0x000640; // MAJOR 6, MINOR 16 - 0x10
classOfDevice = 0x000680; // MAJOR 6, MINOR 32 - 0x20

@J-Hilk soon will switch to 0b.... format - (current project still on C++11)