Can attachInterrupt() be used for Serial1 pins

[ScruffR]

serialEvent() is not interrupt driven, it's a sync function called in between iterations of loop() - I've already discussed that with the OP here

Trouble capturing a serial stream on Serial1

I started out trying to capture a serial stream from a device @115200, but ran into troubles. So I created a bare bones example code to test, and i still cannot capture all the data properly. Am I doing something wrong, or what ? It seems its filling the 64byte buffer faster than it can pull it out. Sadly acquireSerialBuffer() is not available for serial1 ;( What I am doing here is I have a terminal window opened on the Photons USB port, and another terminal window with a USB converter on Seri…

Quote from the docs you linked

The serialEvent functions are called by the system as part of the application loop.