toolhead: Flush in chunks from flush_step_generation()

If note_kinematic_activity() has a time far in the future it could result in a single flush attempt of that time range. Be sure to break up that range into small chunks using the normal _update_move_time() mechanism. Signed-off-by: Kevin O'Connor <kevin@koconnor.net>

Author: KevinOConnor

klippy/toolhead.py

@@ -341,8 +341,14 @@ def flush_step_generation(self):
  self.reactor.update_timer(self.flush_timer, self.reactor.NEVER)
  self.move_queue.set_flush_time(self.buffer_time_high)
  self.idle_flush_print_time = 0.
- flush_time = self.last_kin_move_time + self.kin_flush_delay
- flush_time = max(flush_time, self.print_time - self.kin_flush_delay)
+ # Determine actual last "itersolve" flush time
+ lastf = self.print_time - self.kin_flush_delay
+ # Calculate flush time that includes kinematic scan windows
+ flush_time = max(lastf, self.last_kin_move_time + self.kin_flush_delay)
+ if flush_time > self.print_time:
+ # Flush in small time chunks
+ self._update_move_time(flush_time)
+ # Flush kinematic scan windows and step buffers
  self.force_flush_time = max(self.force_flush_time, flush_time)
  self._update_move_time(max(self.print_time, self.force_flush_time))
  def _flush_lookahead(self):