Using ``NimBLERemoteCharacteristic::getValue()`` in callbacks for ``NimBLERemoteCharacteristic::subscribe()``

[Laxilef]

Hi,

I looked at PR #49 but couldn't figure out if I can use method NimBLERemoteCharacteristic::getValue() in callbacks?
The PR says that we should pass a timestamp to prevent re-reading, but is this relevant now?

Or can we just use such an expression now?

pChar->subscribe(true, [](NimBLERemoteCharacteristic* pChar, uint8_t* pData, size_t length, bool isNotify) {
  // ...
  auto value = pChar->getValue<short>();
  // ...
});

[h2zero]

@Laxilef you can freely call this function, it just returns the internally stored value, does not trigger a read.

[Laxilef]

Awesome! Thanks