Re: [Interest] Bluetooth LE: HowTo inspect QBluetoothDeviceInfo::serviceUuids
Am 19.04.17 um 10:47 schrieb ekke:
> Am 19.04.17 um 09:45 schrieb Oliver Wolff:
>> ...
>>> now I'm simply comparing found ServiceUUIDs with the full value
>>> {180d--1000-8000-00805f9b34fb}
>>> to detect the Device as a HeartRate Device
>> You don't need to compare to the full value. Comparing to
>> QBluetoothUuid::HeartRate also works (at least it does here). I think
>> if that does not work it's a bug or I am still not understanding the
>> problem at hand.
Oliver,
you're right: QBluetoothUuid::HeartRate also detects the ServiceUUIDs
with the long value
so it's much easier in Qt as in Java ;-)
thx again
ekke
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Re: [Interest] Bluetooth LE: HowTo inspect QBluetoothDeviceInfo::serviceUuids
Am 19.04.17 um 09:45 schrieb Oliver Wolff:
> ...
>> now I'm simply comparing found ServiceUUIDs with the full value
>> {180d--1000-8000-00805f9b34fb}
>> to detect the Device as a HeartRate Device
> You don't need to compare to the full value. Comparing to
> QBluetoothUuid::HeartRate also works (at least it does here). I think
> if that does not work it's a bug or I am still not understanding the
> problem at hand.
thx - will try it again - perhaps I did something wrong in an earlier
state of the app
ekke
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Re: [Interest] Bluetooth LE: HowTo inspect QBluetoothDeviceInfo::serviceUuids
On 18/04/2017 11:12, ekke wrote:
Am 18.04.17 um 10:26 schrieb Oliver Wolff:
On 13/04/2017 19:01, ekke wrote:
from QBluetoothDeviceInfo::serviceUuids I'm getting a list of
Service UUIDs ( QBluetoothUuid) without connecting to the device and
inspecting the Services.
there's per ex:
{180d--1000-8000-00805f9b34fb}
and I know this means the device supports
HeartRate
0x180d
How can I inspect the QBluetoothUuid to get 0x180d
I found some Java code like this:
private static int getAssignedNumber(UUID uuid) {
// Keep only the significant bits of the UUID
return (int) ((uuid.getMostSignificantBits() &
0xL) >> 32);
}
but have no idea HowTo do the same from Qt
Hi ekke,
I am not sure I fully understand the problem. If you want to check
the availability of a heart rate sensor, you can just compare the
Uuids with QBluetoothUuid(QBluetoothUuid::HeartRate) can't you?
Hi Oliver,
as soon as I connect to the device and discovered Services I can
compare with QBluetoothUuid::HeartRate (0x180d)
if I only discover the Devices without connecting, most devices
provide ServiceUUIDs
http://doc.qt.io/qt-5/qbluetoothdeviceinfo.html#serviceUuids
but here the UUID isn't 0x180d for HeartRateService, but
{180d--1000-8000-00805f9b34fb}
so looking at the ServiceUUIDs I don't have to nonnect to the device
to know that it supports HeartRate :)
now I'm simply comparing found ServiceUUIDs with the full value
{180d--1000-8000-00805f9b34fb}
to detect the Device as a HeartRate Device
You don't need to compare to the full value. Comparing to
QBluetoothUuid::HeartRate also works (at least it does here). I think if
that does not work it's a bug or I am still not understanding the
problem at hand.
googled and found that there's a (Java) way to get the most
significant Bits from ServiceUUID to compare with
QBluetoothUuid::HeartRate (0x180d)
would make the example app easier to understand
I'm just finishing a new BT LE Example APP - will be published soon
ekke
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Re: [Interest] Bluetooth LE: HowTo inspect QBluetoothDeviceInfo::serviceUuids
Am 18.04.17 um 10:26 schrieb Oliver Wolff:
> On 13/04/2017 19:01, ekke wrote:
>>
>> from QBluetoothDeviceInfo::serviceUuids I'm getting a list of Service
>> UUIDs ( QBluetoothUuid) without connecting to the device and
>> inspecting the Services.
>>
>> there's per ex:
>>
>> {180d--1000-8000-00805f9b34fb}
>>
>> and I know this means the device supports
>>
>>
>> HeartRate
>>
>> 0x180d
>>
>>
>> How can I inspect the QBluetoothUuid to get 0x180d
>>
>>
>> I found some Java code like this:
>>
>>
>> private static int getAssignedNumber(UUID uuid) {
>> // Keep only the significant bits of the UUID
>> return (int) ((uuid.getMostSignificantBits() &
>> 0xL) >> 32);
>> }
>>
>>
>> but have no idea HowTo do the same from Qt
>>
>
> Hi ekke,
>
> I am not sure I fully understand the problem. If you want to check the
> availability of a heart rate sensor, you can just compare the Uuids
> with QBluetoothUuid(QBluetoothUuid::HeartRate) can't you?
Hi Oliver,
as soon as I connect to the device and discovered Services I can compare
with QBluetoothUuid::HeartRate (0x180d)
if I only discover the Devices without connecting, most devices provide
ServiceUUIDs
http://doc.qt.io/qt-5/qbluetoothdeviceinfo.html#serviceUuids
but here the UUID isn't 0x180d for HeartRateService, but
{180d--1000-8000-00805f9b34fb}
so looking at the ServiceUUIDs I don't have to nonnect to the device to
know that it supports HeartRate :)
now I'm simply comparing found ServiceUUIDs with the full value
{180d--1000-8000-00805f9b34fb}
to detect the Device as a HeartRate Device
googled and found that there's a (Java) way to get the most significant
Bits from ServiceUUID to compare with
QBluetoothUuid::HeartRate (0x180d)
would make the example app easier to understand
I'm just finishing a new BT LE Example APP - will be published soon
ekke
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Re: [Interest] Bluetooth LE: HowTo inspect QBluetoothDeviceInfo::serviceUuids
On 13/04/2017 19:01, ekke wrote:
from QBluetoothDeviceInfo::serviceUuids I'm getting a list of Service
UUIDs ( QBluetoothUuid) without connecting to the device and
inspecting the Services.
there's per ex:
{180d--1000-8000-00805f9b34fb}
and I know this means the device supports
HeartRate
0x180d
How can I inspect the QBluetoothUuid to get 0x180d
I found some Java code like this:
private static int getAssignedNumber(UUID uuid) {
// Keep only the significant bits of the UUID
return (int) ((uuid.getMostSignificantBits() &
0xL) >> 32);
}
but have no idea HowTo do the same from Qt
Hi ekke,
I am not sure I fully understand the problem. If you want to check the
availability of a heart rate sensor, you can just compare the Uuids with
QBluetoothUuid(QBluetoothUuid::HeartRate) can't you?
thx for hints
ekke
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