/** * 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 . * */ #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 }