HomeSYNOPSIS
result = handle:ttnBuzz(tid)
DESCRIPTION
Sends a buzz command to a TTN node at ID tid.
The buzz command instructs the device to cause some attention grabbing activity.
The reaction is device dependent. A buzzer could give an audible signal, some LEDs will flash, a drum roll, etc…
The idea is to have a way to find a specific device among several similar devices.
RETURN VALUE
On success, returns true. On failure, returns nil. In case of an error, the error can
be retrieved using rawio:lastError().