Changed switch behavior???

Barliesque

Hi Jared,

We’re running into a strange problem where a switch connecting 3v3 to post 4 isn’t behaving the way it did on other boards. The first twenty boards all behaved the same: an interrupt is fired whenever the connection is made or broken. We have a new bunch of boards and are finding that the same configuration, same software behaves like this: interrupts are fired continuously while the switch is pressed, and stop as soon as it’s released.

Has there been any update that you know of to the nRF9160 that might account for this?
Or can you think of any other explanation?

jaredwolff

Hey Barliesque

If you’re referring to Pin D4, there was no changes. Both pins D2 & D3 are connected to the interrupt pins on the accelerometer. D3 is connected by default. D2 is not. You can cut JMP1 if you are connected to D3.

Hope that helps!

Barliesque

Strange. Our programmer resolved the issue by changing the GPIO configuration to have a pulldown resistor and to only trigger the interrupt when the edge changes to “inactive”

Anyway, on to the next problem – which I’ll post about in a separate thread.