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Latency script can now check upper channels

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This commit is contained in:
Bertrand Songis
2019-07-05 21:19:49 +02:00
parent cd640e6843
commit 6047daadbf
1 changed files with 15 additions and 13 deletions
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tools/latency.py
+15 -13
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@@ -132,9 +132,10 @@ class PwmFrame(Frame):
class LatencyStatistics:
def __init__(self, trigger_transitions, frames, highval, lowval):
def __init__(self, trigger_transitions, frames, channel, highval, lowval):
self.trigger_transitions = trigger_transitions
self.frames = frames
self.channel = channel
self.highval = highval
self.lowval = lowval
@@ -142,9 +143,9 @@ class LatencyStatistics:
for t0, val in self.trigger_transitions[1:]:
value = self.highval if val == 1 else self.lowval
for frame in self.frames:
if frame.is_after(t0) and frame.value(0) == value:
if frame.is_after(t0) and frame.value(self.channel) == value:
delay = frame.end() - t0
yield (t0, val, frame, delay)
yield (t0, val, delay)
break
@staticmethod
@@ -167,7 +168,7 @@ class LatencyStatistics:
with open(path, 'w') as f:
self.append_to_line(f, title, 0, lines, columns)
index = 1
for t0, val, frame, delay in self.iter():
for t0, val, delay in self.iter():
self.append_to_line(f, str(delay), index, lines, columns)
index += 1
@@ -175,13 +176,13 @@ class LatencyStatistics:
mini, maxi = None, None
count = 0
total = 0
for t0, val, frame, delay in self.iter():
for t0, val, delay in self.iter():
count += 1
total += delay
if mini is None or delay < mini[0]:
mini = (delay, t0, frame)
mini = (delay, t0)
if maxi is None or delay > maxi[0]:
maxi = (delay, t0, frame)
maxi = (delay, t0)
print("Delay between the switch toggle and the end of the SBUS frame:")
print(" Count = %d transitions" % count)
@@ -193,11 +194,12 @@ class LatencyStatistics:
def main():
parser = argparse.ArgumentParser()
parser.add_argument('file', help='File to parse', type=argparse.FileType('r'))
parser.add_argument('--trigger', help='The column in the csv file where is your trigger', type=int, required=True)
parser.add_argument('--pwm', help='The column in the csv file where is your PWM output', type=int)
parser.add_argument('--sbus', help='The column in the csv file where is your SBUS output', type=int)
parser.add_argument('--highval', help='The value of SBUS byte 2 when trigger=HIGH', type=int, default=+100)
parser.add_argument('--lowval', help='The value of SBUS byte 2 when trigger=LOW', type=int, default=-100)
parser.add_argument('--trigger', help='column in the CSV file where is the trigger', type=int, required=True)
parser.add_argument('--pwm', help='column in the CSV file where is the PWM output', type=int)
parser.add_argument('--sbus', help='column in the CSV file where is the SBUS output', type=int)
parser.add_argument('--channel', help='channel to check', type=int, default=0)
parser.add_argument('--highval', help='value of channel when trigger=HIGH', type=int, default=+100)
parser.add_argument('--lowval', help='value of channel when trigger=LOW', type=int, default=-100)
parser.add_argument('--export', help='CSV file to export latency values')
parser.add_argument('--title', help='CSV column title', default="Unknown")
parser.add_argument('--append', action='store_true')
@@ -218,7 +220,7 @@ def main():
print("Either a PWM or SBUS column in CSV must be specified")
exit()
statistics = LatencyStatistics(trigger_transitions, frames, args.highval, args.lowval)
statistics = LatencyStatistics(trigger_transitions, frames, args.channel, args.highval, args.lowval)
if args.export:
statistics.export(args.export, args.title, args.append)
statistics.print()