ESP32 wake up from deep sleep by flowmeter

[Basti-Fantasti]

Hello, I am new to this forum and I also haven't so much experience with esp32, just a few small projects are done. Now I have a new project and need a little help. I have an ESP32 DevKit and a flow meter is wired, 3,3V, GND and PIN25. Running my sketch works great, get all the needet information each second an send it by HEC to a receiver. But now I want to use the deep sleep mode to save energy. The way how to enter the deep sleep mode is known, but is it possible to wake up the ESP32 by the same flow meter which will measure the flow after waking up?