Wake up Arduino from Sleep using the Fingerprint Module(R305)

Hi!

I've been using the Adafruit Fingerprint Module with the Arduino Zero.

To conserve power, I put the Zero to sleep using the ArduinoLowPower library. I wish to wake the Zero up from sleep when i place my finger on the Fingerprint Reader.

How can I register a finger detect as an interrupt?

Please Help! :frowning: :frowning: :frowning:

How can I register a finger detect as an interrupt?

If the mysterious device you are using (you failed to post a link) doesn't generate an interrupt, you can't.

Clearly, you can't read data from the device while sleeping.