When retrieving attribute handles using the 128bit base version of a 16 bit UUID some devices will
report "not found". This will attempt to convert the UUID to the 16bit version and try again.
* Adds `to16()` method to NimBLEUUID.
This causes task blocking to fail in client operations leading to exceptions and crashing.
This is a workaround for this situation and will need to be reworked properly in the future.
* Sets macros to allow compiling when Central role is enabled and Observer disabled, or Peripheral enabled and Broadcaster disabled.
* Adds a macro definition for CONFIG_NIMBLE_CPP_IDF to enable different include paths/functionality for IDF / Arduino.
This reverts a previous change @2e1d78ff that caused compiling/linking errors due to the redefinition of btInUse() when another linked library uses the Arduino bluetooth code.
This allows for adding and removing of characteristics and descriptors after initial setup of the server.
When used it will send a service changed notification to all clients.
The changes will not take effect until all clients have disconnected and advertising restarted.
This allows creating instances of services/characteristics and decriptors without
needing to call the parent createX() methods. This allows creation of the attibutes
within a class or other structure and the attributes can be linked to the parent by
calling the parent addX() method.
Additonally this increases the backward compatibility with the original bluedroid library
to further support user migration.
Previously we used the service end handle or, if available, the handle of the next characteristic in the service
as the end handle when retrieving the descriptors of a characteristic. This process would fail when connecting to some
devices if the characteristics were retrieved individually instead of all together. The cause of failure was requesting
a handle range that is out of characteristic scope which is also out of line with BLE
specifications.
The fix included in this is to set the end handles of the characteristics either after retrieving all the characteristics
in a service by using the next charactertistic definition handle or, if the characteristic was retrieved separately,
we retrieve the next characteristic just before retrieving the descriptors.
This allows for clearing the duplicate filter cache when required and will also clear it
automatically when starting a scan.
This is useful when unexpectedly disconnected from a device and attempting to reconnect.
Previously the scan filter would not report advertisements from a device if it was multi-connectable
and advertising while connected. The result was long delays until the device would be scanned again.
This resolves it by clearing the filter cache on each scan start/clearResults call
and adding a method to NimBLEScan for manually clearing the cache on demand.
