114 lines
3.5 KiB
C
114 lines
3.5 KiB
C
/**
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* Marlin 3D Printer Firmware
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* Copyright (c) 2019 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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#pragma once
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/**
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* Endstop Interrupts
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*
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* Without endstop interrupts the endstop pins must be polled continually in
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* the temperature-ISR via endstops.update(), most of the time finding no change.
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* With this feature endstops.update() is called only when we know that at
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* least one endstop has changed state, saving valuable CPU cycles.
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*
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* This feature only works when all used endstop pins can generate an 'external interrupt'.
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*
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* Test whether pins issue interrupts on your board by flashing 'pin_interrupt_test.ino'.
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* (Located in Marlin/buildroot/share/pin_interrupt_test/pin_interrupt_test.ino)
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*/
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#include "../../module/endstops.h"
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// One ISR for all EXT-Interrupts
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void endstop_ISR() { endstops.update(); }
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void setup_endstop_interrupts() {
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#define _ATTACH(P) attachInterrupt(digitalPinToInterrupt(P), endstop_ISR, CHANGE)
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#define LPC1768_PIN_INTERRUPT_M(pin) ((pin >> 0x5 & 0x7) == 0 || (pin >> 0x5 & 0x7) == 2)
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#if HAS_X_MAX
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#if !LPC1768_PIN_INTERRUPT_M(X_MAX_PIN)
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#error "X_MAX_PIN is not INTERRUPT-capable."
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#endif
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_ATTACH(X_MAX_PIN);
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#endif
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#if HAS_X_MIN
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#if !LPC1768_PIN_INTERRUPT_M(X_MIN_PIN)
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#error "X_MIN_PIN is not INTERRUPT-capable."
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#endif
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_ATTACH(X_MIN_PIN);
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#endif
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#if HAS_Y_MAX
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#if !LPC1768_PIN_INTERRUPT_M(Y_MAX_PIN)
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#error "Y_MAX_PIN is not INTERRUPT-capable."
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#endif
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_ATTACH(Y_MAX_PIN);
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#endif
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#if HAS_Y_MIN
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#if !LPC1768_PIN_INTERRUPT_M(Y_MIN_PIN)
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#error "Y_MIN_PIN is not INTERRUPT-capable."
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#endif
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_ATTACH(Y_MIN_PIN);
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#endif
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#if HAS_Z_MAX
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#if !LPC1768_PIN_INTERRUPT_M(Z_MAX_PIN)
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#error "Z_MAX_PIN is not INTERRUPT-capable."
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#endif
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_ATTACH(Z_MAX_PIN);
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#endif
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#if HAS_Z_MIN
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#if !LPC1768_PIN_INTERRUPT_M(Z_MIN_PIN)
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#error "Z_MIN_PIN is not INTERRUPT-capable."
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#endif
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_ATTACH(Z_MIN_PIN);
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#endif
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#if HAS_Z2_MAX
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#if !LPC1768_PIN_INTERRUPT_M(Z2_MAX_PIN)
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#error "Z2_MAX_PIN is not INTERRUPT-capable."
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#endif
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_ATTACH(Z2_MAX_PIN);
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#endif
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#if HAS_Z2_MIN
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#if !LPC1768_PIN_INTERRUPT_M(Z2_MIN_PIN)
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#error "Z2_MIN_PIN is not INTERRUPT-capable."
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#endif
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_ATTACH(Z2_MIN_PIN);
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#endif
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#if HAS_Z3_MAX
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#if !LPC1768_PIN_INTERRUPT_M(Z3_MIN_PIN)
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#error "Z3_MIN_PIN is not INTERRUPT-capable."
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#endif
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_ATTACH(Z3_MAX_PIN);
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#endif
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#if HAS_Z3_MIN
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#if !LPC1768_PIN_INTERRUPT_M(Z3_MIN_PIN)
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#error "Z3_MIN_PIN is not INTERRUPT-capable."
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#endif
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_ATTACH(Z3_MIN_PIN);
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#endif
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#if HAS_Z_MIN_PROBE_PIN
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#if !LPC1768_PIN_INTERRUPT_M(Z_MIN_PROBE_PIN)
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#error "Z_MIN_PROBE_PIN is not INTERRUPT-capable."
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#endif
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_ATTACH(Z_MIN_PROBE_PIN);
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#endif
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}
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