Marlin_Firmware/Marlin/src/feature/runout.h

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