I am playing around with a esp12e board, and I would like to put it into deep sleep.
I can do this with a call to ESP.deepSleep(30e6); for example, this works without a problem.
But now I want to call other functions like, for example,
esp_sleep_get_ext1_wakeup_status
But the compiler does not know where to look for them.
Which Library do I need to install?
Best Regards
Noob Mat