Method quick_stop

Marlin/src/module/planner.cpp:1591–1624

#endif

void Planner::quick_stop() {

  /**
   * Remove all the queued blocks.
   * NOTE: This function is NOT called from the Stepper ISR,
   * so we must consider tail as readonly!
   * That is why we set head to tail - But there is a race condition that
   * must be handled: The tail could change between the read and the assignment
   * so this must be enclosed in a critical section
   */

  const bool was_enabled = stepper.suspend();

  // Drop all queue entries
  const uint8_t tail_value = block_buffer_tail; // Read tail value once
  block_buffer_head = tail_value;
  block_buffer_nonbusy = tail_value;

  // Restart the block delay for the first movement - As the queue was
  // forced to empty, there's no risk the ISR will touch this.

  delay_before_delivering = TERN0(FT_MOTION, ftMotion.cfg.active) ? BLOCK_DELAY_NONE : BLOCK_DELAY_FOR_1ST_MOVE;

  TERN_(HAS_WIRED_LCD, clear_block_buffer_runtime()); // Clear the accumulated runtime

  // Make sure to drop any attempt of queuing moves for 1 second
  cleaning_buffer_counter = TEMP_TIMER_FREQUENCY;

  // Reenable Stepper ISR
  if (was_enabled) stepper.wake_up();

  // And stop the stepper ISR
  stepper.quick_stop();
}

#if ENABLED(REALTIME_REPORTING_COMMANDS)