Firmware2/Marlin/endstops.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/>.
*
*/
/**
* endstops.h - manages endstops
*/
#ifndef ENDSTOPS_H
#define ENDSTOPS_H
enum EndstopEnum {X_MIN = 0, Y_MIN = 1, Z_MIN = 2, Z_MIN_PROBE = 3, X_MAX = 4, Y_MAX = 5, Z_MAX = 6, Z2_MIN = 7, Z2_MAX = 8};
class Endstops {
public:
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static bool enabled, enabled_globally;
static volatile char endstop_hit_bits; // use X_MIN, Y_MIN, Z_MIN and Z_MIN_PROBE as BIT value
#if ENABLED(Z_DUAL_ENDSTOPS)
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static uint16_t
#else
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static byte
#endif
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current_endstop_bits, old_endstop_bits;
Endstops();
/**
* Initialize the endstop pins
*/
void init();
/**
* Update the endstops bits from the pins
*/
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static void update();
/**
* Print an error message reporting the position when the endstops were last hit.
*/
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static void report_state(); //call from somewhere to create an serial error message with the locations the endstops where hit, in case they were triggered
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/**
* Report endstop positions in response to M119
*/
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static void M119();
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// Enable / disable endstop checking globally
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static FORCE_INLINE void enable_globally(bool onoff=true) { enabled_globally = enabled = onoff; }
// Enable / disable endstop checking
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static FORCE_INLINE void enable(bool onoff=true) { enabled = onoff; }
// Disable / Enable endstops based on ENSTOPS_ONLY_FOR_HOMING and global enable
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static FORCE_INLINE void not_homing() { enabled = enabled_globally; }
// Clear endstops (i.e., they were hit intentionally) to suppress the report
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static FORCE_INLINE void hit_on_purpose() { endstop_hit_bits = 0; }
// Enable / disable endstop z-probe checking
#if HAS_BED_PROBE
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static volatile bool z_probe_enabled;
static FORCE_INLINE void enable_z_probe(bool onoff=true) { z_probe_enabled = onoff; }
#endif
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private:
#if ENABLED(Z_DUAL_ENDSTOPS)
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static void test_dual_z_endstops(EndstopEnum es1, EndstopEnum es2);
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#endif
};
extern Endstops endstops;
#endif // ENDSTOPS_H