forked from Archive/PX4-Autopilot
58 lines
1.9 KiB
Python
58 lines
1.9 KiB
Python
#!/usr/bin/env python
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'''
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show times when signal is lost
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'''
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import sys, time, os
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# allow import from the parent directory, where mavlink.py is
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sys.path.insert(0, os.path.join(os.path.dirname(os.path.realpath(__file__)), '..'))
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from optparse import OptionParser
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parser = OptionParser("sigloss.py [options]")
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parser.add_option("--no-timestamps",dest="notimestamps", action='store_true', help="Log doesn't have timestamps")
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parser.add_option("--planner",dest="planner", action='store_true', help="use planner file format")
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parser.add_option("--robust",dest="robust", action='store_true', help="Enable robust parsing (skip over bad data)")
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parser.add_option("--mav10", action='store_true', default=False, help="Use MAVLink protocol 1.0")
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parser.add_option("--deltat", type='float', default=1.0, help="loss threshold in seconds")
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(opts, args) = parser.parse_args()
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if opts.mav10:
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os.environ['MAVLINK10'] = '1'
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import mavutil
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if len(args) < 1:
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print("Usage: sigloss.py [options] <LOGFILE...>")
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sys.exit(1)
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def sigloss(logfile):
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'''work out signal loss times for a log file'''
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print("Processing log %s" % filename)
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mlog = mavutil.mavlink_connection(filename,
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planner_format=opts.planner,
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notimestamps=opts.notimestamps,
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robust_parsing=opts.robust)
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last_t = 0
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while True:
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m = mlog.recv_match()
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if m is None:
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return
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if opts.notimestamps:
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if not 'usec' in m._fieldnames:
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continue
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t = m.usec / 1.0e6
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else:
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t = m._timestamp
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if last_t != 0:
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if t - last_t > opts.deltat:
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print("Sig lost for %.1fs at %s" % (t-last_t, time.asctime(time.localtime(t))))
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last_t = t
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total = 0.0
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for filename in args:
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sigloss(filename)
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