<!doctype html>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
</head>
<body>
<div class="default-style">
Hi there,
</div>
<div class="default-style">
</div>
<div class="default-style">
I am trying to read the BLE service data from <strong>QBluetoothDeviceInfo</strong> via the <strong>serviceData()</strong> method, but I believe I have discovered a bug.
</div>
<div class="default-style">
</div>
<div class="default-style"> <em><span class="mtk1">serviceData() </span><span class="mtk10">-></span></em><span class="mtk1"><em> Dict[QBluetoothUuid, QByteArray]</em><br><br>The function returns an empty dictionary for discovered devices that have no service data available (correct behaviour). However, when the device <strong>does</strong> have service data, a <strong>TypeError</strong> is raised.</span>
</div>
<div class="default-style">
</div>
<div class="default-style"> <em><span class="mtk1">TypeError: unhashable type: 'QBluetoothUuid'</span></em>
</div>
<div class="default-style">
</div>
<div class="default-style"> <span class="mtk1">I have attached a minimal reproducible example that scans for all Bluetooth Low Energy devices and tries to read the service data using serviceData(). Obviously to reproduce this error you will need to be in range of some BLE devices that have non-empty service data.</span>
</div>
<div class="default-style">
</div>
<div class="default-style"> <span class="mtk1">I am using Python 3.10.11 and PyQt 6.6.1.</span>
</div>
<div class="default-style">
</div>
<div class="default-style"> <span class="mtk1"><span class="mtk1">A work around is to use the </span></span>serviceUuids() method, then use serviceData(uuid) for each UUID. However as per the documentation this only return the "first" item in service data, not all of it.
</div>
<div class="default-style">
</div>
<div class="default-style"> <span class="mtk1">Any support would be greatly appreciated.</span>
</div>
<div class="default-style">
</div>
<div class="default-style"> <span class="mtk1">Many thanks,</span>
</div>
<div class="default-style">
</div>
<div class="default-style"> <span class="mtk1">Ben</span>
</div>
</body>
</html>