I have the imp003 development board, which has the 32kHz xtal.
With the crystal, I thought I would be able to use server.sleepfor().
But it goes to sleep and never wakes up (and restarts) after 300 seconds. It remains offline and I have to physically reset or cycle power to make it run again.
My goal is to deep sleep, wake up every 5 minutes, check a prox sensor, report it to agent and go back to sleep. Does this not work with imp003 / development board?
Or maybe I’m doing it wrong?