# This script is in the public domain and has no copyright## This is a simple example script to demonstrate the use of event# masks to limit the communication between TOSSIM and Tython to# improve the execution time of the tools.#import timefrom simcore import *from simutil import *from net.tinyos.sim.msg import *def handler(event):    print "got event", eventinterp.addEventHandler(handler)sim.exec("apps/SenseToRfm/build/pc/main.exe", 2, "-b=1")print "Running for two seconds with all events except DebugMsgEvent"sim.resume()comm.setEventMask(~ DebugMsgEvent.AM_TYPE)comm.waitFor(2 * simtime.onesec)print "Masking all events except InterruptEvent"comm.setEventMask(InterruptEvent.AM_TYPE)comm.waitFor(2 * simtime.onesec)print "Masking all events except InterruptEvent and RadioMsgSentEvent"comm.setEventMask(InterruptEvent.AM_TYPE | RadioMsgSentEvent.AM_TYPE)comm.waitFor(2 * simtime.onesec)print "Unmasking all events for a two seconds (of real time)"comm.setEventMask(~0)time.sleep(2)print "Done."sim.exit()