Initial commit. Unusable Marlin 2.0.5.3 core without any custimization.
This commit is contained in:
Knutwurst
261
Marlin/src/HAL/AVR/endstop_interrupts.h
Executable file
261
Marlin/src/HAL/AVR/endstop_interrupts.h
Executable file
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/**
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* Marlin 3D Printer Firmware
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* Copyright (c) 2020 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 either an
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* 'external interrupt' or a 'pin change 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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#include <stdint.h>
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// One ISR for all EXT-Interrupts
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void endstop_ISR() { endstops.update(); }
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/**
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* Patch for pins_arduino.h (...\Arduino\hardware\arduino\avr\variants\mega\pins_arduino.h)
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*
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* These macros for the Arduino MEGA do not include the two connected pins on Port J (D14, D15).
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* So we extend them here because these are the normal pins for Y_MIN and Y_MAX on RAMPS.
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* There are more PCI-enabled processor pins on Port J, but they are not connected to Arduino MEGA.
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*/
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#if defined(ARDUINO_AVR_MEGA2560) || defined(ARDUINO_AVR_MEGA)
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#define digitalPinHasPCICR(p) (WITHIN(p, 10, 15) || WITHIN(p, 50, 53) || WITHIN(p, 62, 69))
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#undef digitalPinToPCICR
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#define digitalPinToPCICR(p) (digitalPinHasPCICR(p) ? (&PCICR) : nullptr)
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#undef digitalPinToPCICRbit
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#define digitalPinToPCICRbit(p) (WITHIN(p, 10, 13) || WITHIN(p, 50, 53) ? 0 : \
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WITHIN(p, 14, 15) ? 1 : \
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WITHIN(p, 62, 69) ? 2 : \
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0)
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#undef digitalPinToPCMSK
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#define digitalPinToPCMSK(p) (WITHIN(p, 10, 13) || WITHIN(p, 50, 53) ? (&PCMSK0) : \
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WITHIN(p, 14, 15) ? (&PCMSK1) : \
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WITHIN(p, 62, 69) ? (&PCMSK2) : \
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nullptr)
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#undef digitalPinToPCMSKbit
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#define digitalPinToPCMSKbit(p) (WITHIN(p, 10, 13) ? ((p) - 6) : \
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(p) == 14 || (p) == 51 ? 2 : \
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(p) == 15 || (p) == 52 ? 1 : \
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(p) == 50 ? 3 : \
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(p) == 53 ? 0 : \
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WITHIN(p, 62, 69) ? ((p) - 62) : \
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0)
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#elif defined(__AVR_ATmega164A__) || defined(__AVR_ATmega164P__) || defined(__AVR_ATmega324A__) || \
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defined(__AVR_ATmega324P__) || defined(__AVR_ATmega324PA__) || defined(__AVR_ATmega324PB__) || \
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defined(__AVR_ATmega644A__) || defined(__AVR_ATmega644P__) || defined(__AVR_ATmega1284__) || \
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defined(__AVR_ATmega1284P__)
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#define digitalPinHasPCICR(p) WITHIN(p, 0, NUM_DIGITAL_PINS)
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#else
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#error "Unsupported AVR variant!"
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#endif
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// Install Pin change interrupt for a pin. Can be called multiple times.
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void pciSetup(const int8_t pin) {
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if (digitalPinHasPCICR(pin)) {
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SBI(*digitalPinToPCMSK(pin), digitalPinToPCMSKbit(pin)); // enable pin
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SBI(PCIFR, digitalPinToPCICRbit(pin)); // clear any outstanding interrupt
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SBI(PCICR, digitalPinToPCICRbit(pin)); // enable interrupt for the group
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}
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}
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// Handlers for pin change interrupts
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#ifdef PCINT0_vect
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ISR(PCINT0_vect) { endstop_ISR(); }
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#endif
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#ifdef PCINT1_vect
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ISR(PCINT1_vect, ISR_ALIASOF(PCINT0_vect));
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#endif
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#ifdef PCINT2_vect
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ISR(PCINT2_vect, ISR_ALIASOF(PCINT0_vect));
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#endif
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#ifdef PCINT3_vect
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ISR(PCINT3_vect, ISR_ALIASOF(PCINT0_vect));
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#endif
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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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#if HAS_X_MAX
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#if (digitalPinToInterrupt(X_MAX_PIN) != NOT_AN_INTERRUPT)
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_ATTACH(X_MAX_PIN);
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#else
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static_assert(digitalPinHasPCICR(X_MAX_PIN), "X_MAX_PIN is not interrupt-capable");
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pciSetup(X_MAX_PIN);
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#endif
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#endif
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#if HAS_X_MIN
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#if (digitalPinToInterrupt(X_MIN_PIN) != NOT_AN_INTERRUPT)
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_ATTACH(X_MIN_PIN);
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#else
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static_assert(digitalPinHasPCICR(X_MIN_PIN), "X_MIN_PIN is not interrupt-capable");
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pciSetup(X_MIN_PIN);
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#endif
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#endif
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#if HAS_Y_MAX
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#if (digitalPinToInterrupt(Y_MAX_PIN) != NOT_AN_INTERRUPT)
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_ATTACH(Y_MAX_PIN);
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#else
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static_assert(digitalPinHasPCICR(Y_MAX_PIN), "Y_MAX_PIN is not interrupt-capable");
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pciSetup(Y_MAX_PIN);
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#endif
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#endif
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#if HAS_Y_MIN
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#if (digitalPinToInterrupt(Y_MIN_PIN) != NOT_AN_INTERRUPT)
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_ATTACH(Y_MIN_PIN);
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#else
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static_assert(digitalPinHasPCICR(Y_MIN_PIN), "Y_MIN_PIN is not interrupt-capable");
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pciSetup(Y_MIN_PIN);
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#endif
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#endif
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#if HAS_Z_MAX
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#if (digitalPinToInterrupt(Z_MAX_PIN) != NOT_AN_INTERRUPT)
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_ATTACH(Z_MAX_PIN);
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#else
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static_assert(digitalPinHasPCICR(Z_MAX_PIN), "Z_MAX_PIN is not interrupt-capable");
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pciSetup(Z_MAX_PIN);
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#endif
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#endif
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#if HAS_Z_MIN
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#if (digitalPinToInterrupt(Z_MIN_PIN) != NOT_AN_INTERRUPT)
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_ATTACH(Z_MIN_PIN);
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#else
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static_assert(digitalPinHasPCICR(Z_MIN_PIN), "Z_MIN_PIN is not interrupt-capable");
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pciSetup(Z_MIN_PIN);
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#endif
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#endif
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#if HAS_X2_MAX
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#if (digitalPinToInterrupt(X2_MAX_PIN) != NOT_AN_INTERRUPT)
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_ATTACH(X2_MAX_PIN);
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#else
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static_assert(digitalPinHasPCICR(X2_MAX_PIN), "X2_MAX_PIN is not interrupt-capable");
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pciSetup(X2_MAX_PIN);
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#endif
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#endif
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#if HAS_X2_MIN
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#if (digitalPinToInterrupt(X2_MIN_PIN) != NOT_AN_INTERRUPT)
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_ATTACH(X2_MIN_PIN);
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#else
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static_assert(digitalPinHasPCICR(X2_MIN_PIN), "X2_MIN_PIN is not interrupt-capable");
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pciSetup(X2_MIN_PIN);
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#endif
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#endif
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#if HAS_Y2_MAX
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#if (digitalPinToInterrupt(Y2_MAX_PIN) != NOT_AN_INTERRUPT)
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_ATTACH(Y2_MAX_PIN);
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#else
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static_assert(digitalPinHasPCICR(Y2_MAX_PIN), "Y2_MAX_PIN is not interrupt-capable");
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pciSetup(Y2_MAX_PIN);
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#endif
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#endif
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#if HAS_Y2_MIN
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#if (digitalPinToInterrupt(Y2_MIN_PIN) != NOT_AN_INTERRUPT)
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_ATTACH(Y2_MIN_PIN);
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#else
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static_assert(digitalPinHasPCICR(Y2_MIN_PIN), "Y2_MIN_PIN is not interrupt-capable");
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pciSetup(Y2_MIN_PIN);
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#endif
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#endif
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#if HAS_Z2_MAX
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#if (digitalPinToInterrupt(Z2_MAX_PIN) != NOT_AN_INTERRUPT)
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_ATTACH(Z2_MAX_PIN);
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#else
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static_assert(digitalPinHasPCICR(Z2_MAX_PIN), "Z2_MAX_PIN is not interrupt-capable");
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pciSetup(Z2_MAX_PIN);
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#endif
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#endif
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#if HAS_Z2_MIN
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#if (digitalPinToInterrupt(Z2_MIN_PIN) != NOT_AN_INTERRUPT)
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_ATTACH(Z2_MIN_PIN);
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#else
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static_assert(digitalPinHasPCICR(Z2_MIN_PIN), "Z2_MIN_PIN is not interrupt-capable");
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pciSetup(Z2_MIN_PIN);
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#endif
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#endif
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#if HAS_Z3_MAX
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#if (digitalPinToInterrupt(Z3_MAX_PIN) != NOT_AN_INTERRUPT)
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_ATTACH(Z3_MAX_PIN);
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#else
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static_assert(digitalPinHasPCICR(Z3_MAX_PIN), "Z3_MAX_PIN is not interrupt-capable");
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pciSetup(Z3_MAX_PIN);
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#endif
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#endif
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#if HAS_Z3_MIN
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#if (digitalPinToInterrupt(Z3_MIN_PIN) != NOT_AN_INTERRUPT)
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_ATTACH(Z3_MIN_PIN);
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#else
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static_assert(digitalPinHasPCICR(Z3_MIN_PIN), "Z3_MIN_PIN is not interrupt-capable");
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pciSetup(Z3_MIN_PIN);
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#endif
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#endif
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#if HAS_Z4_MAX
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#if (digitalPinToInterrupt(Z4_MAX_PIN) != NOT_AN_INTERRUPT)
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_ATTACH(Z4_MAX_PIN);
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#else
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static_assert(digitalPinHasPCICR(Z4_MAX_PIN), "Z4_MAX_PIN is not interrupt-capable");
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pciSetup(Z4_MAX_PIN);
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#endif
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#endif
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#if HAS_Z4_MIN
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#if (digitalPinToInterrupt(Z4_MIN_PIN) != NOT_AN_INTERRUPT)
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_ATTACH(Z4_MIN_PIN);
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#else
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static_assert(digitalPinHasPCICR(Z4_MIN_PIN), "Z4_MIN_PIN is not interrupt-capable");
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pciSetup(Z4_MIN_PIN);
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#endif
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#endif
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#if HAS_Z_MIN_PROBE_PIN
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#if (digitalPinToInterrupt(Z_MIN_PROBE_PIN) != NOT_AN_INTERRUPT)
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_ATTACH(Z_MIN_PROBE_PIN);
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#else
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static_assert(digitalPinHasPCICR(Z_MIN_PROBE_PIN), "Z_MIN_PROBE_PIN is not interrupt-capable");
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pciSetup(Z_MIN_PROBE_PIN);
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#endif
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#endif
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// If we arrive here without raising an assertion, each pin has either an EXT-interrupt or a PCI.
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}
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