Does the Photon have a built-in comparator?

General
1

The AVR Microcontrollers have one and I can use it to trigger an interrupt as in - when the voltage on pin D6 crosses the reference voltage on D7 (for the UNO).

http://www.gammon.com.au/forum/?id=11916

I looked in the Photon documentation and could not find anything on this. Would prefer to use an internal comparator than getting an external chip.

Many thanks for your help!

A.J.

2

https://docs.particle.io/datasheets/photon-datasheet/

According to the docs, no, this particular STM32F205 does not appear to have any… other versions of the STM32 do, but not the 2F.

Page 5 of the PDF

3

I think you will need to add that externally, and use a gpio pin for interrupt/wakeup.