toolhead: Extend flushing slightly past required time
There is no harm in enabling flushing for a little longer than necessary. In contrast, a slight rounding issue causing a message to not get flushed properly could result in an error. So, extend the flushing time slightly to avoid potential issues. Signed-off-by: Kevin O'Connor <kevin@koconnor.net>
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@ -6,7 +6,6 @@
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import chelper
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MAX_SCHEDULE_TIME = 5.0
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CLOCK_SYNC_EXTRA_TIME = 0.050
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class error(Exception):
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pass
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@ -118,8 +117,7 @@ class MCU_queued_pwm:
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# Continue flushing to resend time
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wakeclock += self._duration_ticks
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wake_print_time = self._mcu.clock_to_print_time(wakeclock)
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self._toolhead.note_kinematic_activity(wake_print_time
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+ CLOCK_SYNC_EXTRA_TIME)
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self._toolhead.note_kinematic_activity(wake_print_time)
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def set_pwm(self, print_time, value):
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clock = self._mcu.print_time_to_clock(print_time)
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if self._invert:
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@ -1,6 +1,6 @@
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# Code for coordinating events on the printer toolhead
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#
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# Copyright (C) 2016-2021 Kevin O'Connor <kevin@koconnor.net>
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# Copyright (C) 2016-2024 Kevin O'Connor <kevin@koconnor.net>
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#
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# This file may be distributed under the terms of the GNU GPLv3 license.
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import math, logging, importlib
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@ -191,6 +191,7 @@ BUFFER_TIME_HIGH = 2.0
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BUFFER_TIME_START = 0.250
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BGFLUSH_LOW_TIME = 0.200
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BGFLUSH_BATCH_TIME = 0.200
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BGFLUSH_EXTRA_TIME = 0.250
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MIN_KIN_TIME = 0.100
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MOVE_BATCH_TIME = 0.500
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STEPCOMPRESS_FLUSH_TIME = 0.050
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@ -428,14 +429,15 @@ class ToolHead:
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self.check_stall_time = self.print_time
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# In "NeedPrime"/"Priming" state - flush queues if needed
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while 1:
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if self.last_flush_time >= self.need_flush_time:
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end_flush = self.need_flush_time + BGFLUSH_EXTRA_TIME
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if self.last_flush_time >= end_flush:
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self.do_kick_flush_timer = True
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return self.reactor.NEVER
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buffer_time = self.last_flush_time - est_print_time
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if buffer_time > BGFLUSH_LOW_TIME:
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return eventtime + buffer_time - BGFLUSH_LOW_TIME
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ftime = est_print_time + BGFLUSH_LOW_TIME + BGFLUSH_BATCH_TIME
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self._advance_flush_time(min(self.need_flush_time, ftime))
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self._advance_flush_time(min(end_flush, ftime))
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except:
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logging.exception("Exception in flush_handler")
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self.printer.invoke_shutdown("Exception in flush_handler")
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