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/**
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* Marlin 3D Printer Firmware
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* Copyright (C) 2016 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
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*
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* Based on Sprinter and grbl.
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* Copyright (C) 2011 Camiel Gubbels / Erik van der Zalm
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*
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*/
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/**
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* runout.h - Runout sensor support
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*/
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#ifndef _RUNOUT_H_
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#define _RUNOUT_H_
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#include "cardreader.h"
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#include "printcounter.h"
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#include "stepper.h"
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#include "Marlin.h"
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#include "MarlinConfig.h"
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#define FIL_RUNOUT_THRESHOLD 5
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class FilamentRunoutSensor {
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public:
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FilamentRunoutSensor() {}
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static void setup();
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FORCE_INLINE static void reset() { runout_count = 0; filament_ran_out = false; }
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FORCE_INLINE static void run() {
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if ((IS_SD_PRINTING() || print_job_timer.isRunning()) && check() && !filament_ran_out) {
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filament_ran_out = true;
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enqueue_and_echo_commands_P(PSTR(FILAMENT_RUNOUT_SCRIPT));
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planner.synchronize();
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}
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}
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private:
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static bool filament_ran_out;
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static uint8_t runout_count;
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FORCE_INLINE static bool check() {
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#if NUM_RUNOUT_SENSORS < 2
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// A single sensor applying to all extruders
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const bool is_out = READ(FIL_RUNOUT_PIN) == FIL_RUNOUT_INVERTING;
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#else
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// Read the sensor for the active extruder
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bool is_out;
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switch (active_extruder) {
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case 0: is_out = READ(FIL_RUNOUT_PIN) == FIL_RUNOUT_INVERTING; break;
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case 1: is_out = READ(FIL_RUNOUT2_PIN) == FIL_RUNOUT_INVERTING; break;
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#if NUM_RUNOUT_SENSORS > 2
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case 2: is_out = READ(FIL_RUNOUT3_PIN) == FIL_RUNOUT_INVERTING; break;
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#if NUM_RUNOUT_SENSORS > 3
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case 3: is_out = READ(FIL_RUNOUT4_PIN) == FIL_RUNOUT_INVERTING; break;
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#if NUM_RUNOUT_SENSORS > 4
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case 4: is_out = READ(FIL_RUNOUT5_PIN) == FIL_RUNOUT_INVERTING; break;
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#endif
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#endif
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#endif
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}
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#endif
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return (is_out ? ++runout_count : (runout_count = 0)) > FIL_RUNOUT_THRESHOLD;
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}
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};
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extern FilamentRunoutSensor runout;
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#endif // _RUNOUT_H_
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