QLowEnergyService - ClientCharacteristicConfiguration

Core Bluetooth has a special method to enable/disable char update notifications and
even more - Core Bluetooth does not allow to use writeValue:forDescriptor:
with ClientCharacteristicConfiguration - that's why need this 'workaround'.

Change-Id: I4a01690a76aabf62397321ca6ba22c4abb1c420c
Reviewed-by: Alex Blasche <alexander.blasche@theqtcompany.com>

1 files changed, 3 insertions, 1 deletions

diff --git a/src/bluetooth/qlowenergyservice_osx.mm b/src/bluetooth/qlowenergyservice_osx.mm
index 05763811..cb1c1f30 100644
--- a/src/bluetooth/qlowenergyservice_osx.mm
+++ b/src/bluetooth/qlowenergyservice_osx.mm
@@ -236,7 +236,8 @@ void QLowEnergyService::writeDescriptor(const QLowEnergyDescriptor &descriptor,
     }
 
     if (descriptor.uuid() == QBluetoothUuid::ClientCharacteristicConfiguration) {
-        // Core Bluetooth:
+        // We have to identify a special case - ClientCharacteristicConfiguration
+        // since with Core Bluetooth:
         //
         // "You cannot use this method to write the value of a client configuration descriptor
         // (represented by the CBUUIDClientCharacteristicConfigurationString constant),
@@ -244,6 +245,7 @@ void QLowEnergyService::writeDescriptor(const QLowEnergyDescriptor &descriptor,
         // characteristic’s value with respect to a client. If you want to manage
         // notifications or indications for a characteristic’s value, you must
         // use the setNotifyValue:forCharacteristic: method instead."
+        controller->setNotifyValue(descriptor.d_ptr, descriptor.characteristicHandle(), newValue);
     } else {
         controller->writeDescriptor(descriptor.d_ptr, descriptor.handle(), newValue);
     }