I'm using a nxp kw24d board and I want to know if exists a function that returns the time since this board was turned on. I want a function similar of millis() in Arduino.
There is no analog function in the current examples, still, you can try using the RTC module of the device and configure it to get the timestamp.
You can check the chapter 47 of the Reference Manual of the device for further details on this
Retrieving data ...