How to use wait_output method in lisa

Best Python code snippet using lisa_python

timer_calib.py

Source:timer_calib.py

...5# Check timers behavior6#7import time8def one_pass(helper):9      helper.wait_output("=== Timer calibration ===")10      res = helper.wait_output("back-to-back get_time : (?P<lat>[0-9]+) us",11                               use_re=True)["lat"]12      minlat = int(res)13      helper.trace("get_time latency %d us\n" % minlat)14      helper.wait_output("sleep 1s")15      t0 = time.time()16      second = helper.wait_output("done. delay = (?P<second>[0-9]+) us",17                               use_re=True)["second"]18      t1 = time.time()19      secondreal = t1 - t020      secondlat = int(second) - 100000021      helper.trace("1s timer latency %d us / real time %f s\n" % (secondlat,22                                                                  secondreal))23      us = {}24      for pow2 in range(7):25          delay = 1 << (7-pow2)26          us[delay] = helper.wait_output("%d us => (?P<us>[0-9]+) us" % delay,27                                  use_re=True)["us"]28      helper.wait_output("Done.")29      return minlat, secondlat, secondreal30def test(helper):31      one_pass(helper)32      helper.ec_command("reboot")33      helper.wait_output("--- UART initialized")34      # get the timing results on the second pass35      # to avoid binary translation overhead36      minlat, secondlat, secondreal = one_pass(helper)37      # check that the timings somewhat make sense38      if minlat > 220 or secondlat > 500 or abs(secondreal-1.0) > 0.200:39           helper.fail("imprecise timings " +40                       "(get_time %d us sleep %d us / real time %.3f s)" %41                       (minlat, secondlat, secondreal))...

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