I would like to know the difference between RTIMER_NOW() and clock_time() function. Can I store the values they return in an int variable? Do they return the time referred to the whole simulation or to the single mote that call them? If a mote starts its main process 5 sec after the first event in the simulation, does these functions return the value of the simulation or the (value of simulation - 5 sec)? Thank you.

Contiki difference between RTIMER_NOW() and clock_time()

I would like to know the difference between

RTIMER_NOW()

and

clock_time()

function.

Can I store the values they return in an int variable?
Do they return the time referred to the whole simulation or to the single mote that call them? If a mote starts its main process 5 sec after the first event in the simulation, does these functions return the value of the simulation or the (value of simulation - 5 sec)?

Thank you.