The loop() could run fast enough to read every data byte, so perhaps a buffer is not needed. Perhaps a counter could be added to detect a missing byte. If the data is not needed, it is okay to let the interrupt still be active.
The loop() could run fast enough to read every data byte, so perhaps a buffer is not needed. Perhaps a counter could be added to detect a missing byte. If the data is not needed, it is okay to let the interrupt still be active.