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/**
* Marlin 3D Printer Firmware
* Copyright (c) 2020 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 <https://www.gnu.org/licenses/>.
*
*/
#pragma once
/**
* Endstop Interrupts
*
* Without endstop interrupts the endstop pins must be polled continually in
* the temperature-ISR via endstops.update(), most of the time finding no change.
* With this feature endstops.update() is called only when we know that at
* least one endstop has changed state, saving valuable CPU cycles.
*
* This feature only works when all used endstop pins can generate an 'external interrupt'.
*
* Test whether pins issue interrupts on your board by flashing 'pin_interrupt_test.ino'.
* (Located in Marlin/buildroot/share/pin_interrupt_test/pin_interrupt_test.ino)
*/
#include "../../module/endstops.h"
// One ISR for all EXT-Interrupts
void endstop_ISR() { endstops.update(); }
void setup_endstop_interrupts() {
#define _ATTACH(P) attachInterrupt(digitalPinToInterrupt(P), endstop_ISR, CHANGE)
#define LPC1768_PIN_INTERRUPT_M(pin) ((pin >> 0x5 & 0x7) == 0 || (pin >> 0x5 & 0x7) == 2)
#if HAS_X_MAX
#if !LPC1768_PIN_INTERRUPT_M(X_MAX_PIN)
#error "X_MAX_PIN is not INTERRUPT-capable. Disable ENDSTOP_INTERRUPTS_FEATURE to continue."
#endif
_ATTACH(X_MAX_PIN);
#endif
#if HAS_X_MIN
#if !LPC1768_PIN_INTERRUPT_M(X_MIN_PIN)
#error "X_MIN_PIN is not INTERRUPT-capable. Disable ENDSTOP_INTERRUPTS_FEATURE to continue."
#endif
_ATTACH(X_MIN_PIN);
#endif
#if HAS_Y_MAX
#if !LPC1768_PIN_INTERRUPT_M(Y_MAX_PIN)
#error "Y_MAX_PIN is not INTERRUPT-capable. Disable ENDSTOP_INTERRUPTS_FEATURE to continue."
#endif
_ATTACH(Y_MAX_PIN);
#endif
#if HAS_Y_MIN
#if !LPC1768_PIN_INTERRUPT_M(Y_MIN_PIN)
#error "Y_MIN_PIN is not INTERRUPT-capable. Disable ENDSTOP_INTERRUPTS_FEATURE to continue."
#endif
_ATTACH(Y_MIN_PIN);
#endif
#if HAS_Z_MAX
#if !LPC1768_PIN_INTERRUPT_M(Z_MAX_PIN)
#error "Z_MAX_PIN is not INTERRUPT-capable. Disable ENDSTOP_INTERRUPTS_FEATURE to continue."
#endif
_ATTACH(Z_MAX_PIN);
#endif
#if HAS_Z_MIN
#if !LPC1768_PIN_INTERRUPT_M(Z_MIN_PIN)
#error "Z_MIN_PIN is not INTERRUPT-capable. Disable ENDSTOP_INTERRUPTS_FEATURE to continue."
#endif
_ATTACH(Z_MIN_PIN);
#endif
#if HAS_Z2_MAX
#if !LPC1768_PIN_INTERRUPT_M(Z2_MAX_PIN)
#error "Z2_MAX_PIN is not INTERRUPT-capable. Disable ENDSTOP_INTERRUPTS_FEATURE to continue."
#endif
_ATTACH(Z2_MAX_PIN);
#endif
#if HAS_Z2_MIN
#if !LPC1768_PIN_INTERRUPT_M(Z2_MIN_PIN)
#error "Z2_MIN_PIN is not INTERRUPT-capable. Disable ENDSTOP_INTERRUPTS_FEATURE to continue."
#endif
_ATTACH(Z2_MIN_PIN);
#endif
#if HAS_Z3_MAX
#if !LPC1768_PIN_INTERRUPT_M(Z3_MAX_PIN)
#error "Z3_MIN_PIN is not INTERRUPT-capable. Disable ENDSTOP_INTERRUPTS_FEATURE to continue."
#endif
_ATTACH(Z3_MAX_PIN);
#endif
#if HAS_Z3_MIN
#if !LPC1768_PIN_INTERRUPT_M(Z3_MIN_PIN)
#error "Z3_MIN_PIN is not INTERRUPT-capable. Disable ENDSTOP_INTERRUPTS_FEATURE to continue."
#endif
_ATTACH(Z3_MIN_PIN);
#endif
#if HAS_Z4_MAX
#if !LPC1768_PIN_INTERRUPT_M(Z4_MAX_PIN)
#error "Z4_MIN_PIN is not INTERRUPT-capable. Disable ENDSTOP_INTERRUPTS_FEATURE to continue."
#endif
_ATTACH(Z4_MAX_PIN);
#endif
#if HAS_Z4_MIN
#if !LPC1768_PIN_INTERRUPT_M(Z4_MIN_PIN)
#error "Z4_MIN_PIN is not INTERRUPT-capable. Disable ENDSTOP_INTERRUPTS_FEATURE to continue."
#endif
_ATTACH(Z4_MIN_PIN);
#endif
#if HAS_Z_MIN_PROBE_PIN
#if !LPC1768_PIN_INTERRUPT_M(Z_MIN_PROBE_PIN)
#error "Z_MIN_PROBE_PIN is not INTERRUPT-capable. Disable ENDSTOP_INTERRUPTS_FEATURE to continue."
#endif
_ATTACH(Z_MIN_PROBE_PIN);
#endif
}
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