External setup button for Electron

[RWB]

Good catch.

On the Photon you can get access to the setup pin on the bottom exposed pad of the board.

On the Electron I'm pretty sure you can map the current setup button to an exposed pin of the Electron to achieve the same thing although it's not well documented. See below:

Does the Electron support external interrupts?

Yup, the docs lag behind a few years here The list of availabe interrupt pins for the Electron is similar to the Photon’s. To know which pins share EXTI lines with other pins you’d need to look at the GPIO numbers in the pin overview in the datasheets where Px## stands for Port x bit ## and all bits with the same number share the same EXTI line across all ports. So out of Ports A, B, C & D only one ## can have an independent interrupt assigned. e.g. for the Photon you read D0 and A…