/** * Marlin 3D Printer Firmware * * Copyright (c) 2020 MarlinFirmware [https://github.com/MarlinFirmware/Marlin] * SAMD51 HAL developed by Giuliano Zaro (AKA GMagician) * * 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 for ATMEL SAMD51 based targets. * * On SAMD51, all pins support external interrupt capability. * Any pin can be used for external interrupts, but there are some restrictions. * At most 16 different external interrupts can be used at one time. * Further, you can’t just pick any 16 pins to use. This is because every pin on the SAMD51 * connects to what is called an EXTINT line, and only one pin per EXTINT line can be used for external * interrupts at a time */ /** * 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" #define MATCH_EILINE(P1,P2) (P1 != P2 && PIN_TO_EILINE(P1) == PIN_TO_EILINE(P2)) #if HAS_X_MAX #define MATCH_X_MAX_EILINE(P) MATCH_EILINE(P, X_MAX_PIN) #else #define MATCH_X_MAX_EILINE(P) false #endif #if HAS_X_MIN #define MATCH_X_MIN_EILINE(P) MATCH_EILINE(P, X_MIN_PIN) #else #define MATCH_X_MIN_EILINE(P) false #endif #if HAS_Y_MAX #define MATCH_Y_MAX_EILINE(P) MATCH_EILINE(P, Y_MAX_PIN) #else #define MATCH_Y_MAX_EILINE(P) false #endif #if HAS_Y_MIN #define MATCH_Y_MIN_EILINE(P) MATCH_EILINE(P, Y_MIN_PIN) #else #define MATCH_Y_MIN_EILINE(P) false #endif #if HAS_Z_MAX #define MATCH_Z_MAX_EILINE(P) MATCH_EILINE(P, Z_MAX_PIN) #else #define MATCH_Z_MAX_EILINE(P) false #endif #if HAS_Z_MIN #define MATCH_Z_MIN_EILINE(P) MATCH_EILINE(P, Z_MIN_PIN) #else #define MATCH_Z_MIN_EILINE(P) false #endif #if HAS_Z2_MAX #define MATCH_Z2_MAX_EILINE(P) MATCH_EILINE(P, Z2_MAX_PIN) #else #define MATCH_Z2_MAX_EILINE(P) false #endif #if HAS_Z2_MIN #define MATCH_Z2_MIN_EILINE(P) MATCH_EILINE(P, Z2_MIN_PIN) #else #define MATCH_Z2_MIN_EILINE(P) false #endif #if HAS_Z3_MAX #define MATCH_Z3_MAX_EILINE(P) MATCH_EILINE(P, Z3_MAX_PIN) #else #define MATCH_Z3_MAX_EILINE(P) false #endif #if HAS_Z3_MIN #define MATCH_Z3_MIN_EILINE(P) MATCH_EILINE(P, Z3_MIN_PIN) #else #define MATCH_Z3_MIN_EILINE(P) false #endif #if HAS_Z4_MAX #define MATCH_Z4_MAX_EILINE(P) MATCH_EILINE(P, Z4_MAX_PIN) #else #define MATCH_Z4_MAX_EILINE(P) false #endif #if HAS_Z4_MIN #define MATCH_Z4_MIN_EILINE(P) MATCH_EILINE(P, Z4_MIN_PIN) #else #define MATCH_Z4_MIN_EILINE(P) false #endif #if HAS_Z_MIN_PROBE_PIN #define MATCH_Z_MIN_PROBE_EILINE(P) MATCH_EILINE(P, Z_MIN_PROBE_PIN) #else #define MATCH_Z_MIN_PROBE_EILINE(P) false #endif #define AVAILABLE_EILINE(P) (PIN_TO_EILINE(P) != -1 \ && !MATCH_X_MAX_EILINE(P) && !MATCH_X_MIN_EILINE(P) \ && !MATCH_Y_MAX_EILINE(P) && !MATCH_Y_MIN_EILINE(P) \ && !MATCH_Z_MAX_EILINE(P) && !MATCH_Z_MIN_EILINE(P) \ && !MATCH_Z2_MAX_EILINE(P) && !MATCH_Z2_MIN_EILINE(P) \ && !MATCH_Z3_MAX_EILINE(P) && !MATCH_Z3_MIN_EILINE(P) \ && !MATCH_Z4_MAX_EILINE(P) && !MATCH_Z4_MIN_EILINE(P) \ && !MATCH_Z_MIN_PROBE_EILINE(P)) // One ISR for all EXT-Interrupts void endstop_ISR() { endstops.update(); } void setup_endstop_interrupts() { #if HAS_X_MAX #if !AVAILABLE_EILINE(X_MAX_PIN) #error "X_MAX_PIN has no EXTINT line available." #endif attachInterrupt(X_MAX_PIN, endstop_ISR, CHANGE); #endif #if HAS_X_MIN #if !AVAILABLE_EILINE(X_MIN_PIN) #error "X_MIN_PIN has no EXTINT line available." #endif attachInterrupt(X_MIN_PIN, endstop_ISR, CHANGE); #endif #if HAS_Y_MAX #if !AVAILABLE_EILINE(Y_MAX_PIN) #error "Y_MAX_PIN has no EXTINT line available." #endif attachInterrupt(Y_MAX_PIN, endstop_ISR, CHANGE); #endif #if HAS_Y_MIN #if !AVAILABLE_EILINE(Y_MIN_PIN) #error "Y_MIN_PIN has no EXTINT line available." #endif attachInterrupt(Y_MIN_PIN, endstop_ISR, CHANGE); #endif #if HAS_Z_MAX #if !AVAILABLE_EILINE(Z_MAX_PIN) #error "Z_MAX_PIN has no EXTINT line available." #endif attachInterrupt(Z_MAX_PIN, endstop_ISR, CHANGE); #endif #if HAS_Z_MIN #if !AVAILABLE_EILINE(Z_MIN_PIN) #error "Z_MIN_PIN has no EXTINT line available." #endif attachInterrupt(Z_MIN_PIN, endstop_ISR, CHANGE); #endif #if HAS_Z2_MAX #if !AVAILABLE_EILINE(Z2_MAX_PIN) #error "Z2_MAX_PIN has no EXTINT line available." #endif attachInterrupt(Z2_MAX_PIN, endstop_ISR, CHANGE); #endif #if HAS_Z2_MIN #if !AVAILABLE_EILINE(Z2_MIN_PIN) #error "Z2_MIN_PIN has no EXTINT line available." #endif attachInterrupt(Z2_MIN_PIN, endstop_ISR, CHANGE); #endif #if HAS_Z3_MAX #if !AVAILABLE_EILINE(Z3_MAX_PIN) #error "Z3_MAX_PIN has no EXTINT line available." #endif attachInterrupt(Z3_MAX_PIN, endstop_ISR, CHANGE); #endif #if HAS_Z3_MIN #if !AVAILABLE_EILINE(Z3_MIN_PIN) #error "Z3_MIN_PIN has no EXTINT line available." #endif attachInterrupt(Z3_MIN_PIN, endstop_ISR, CHANGE); #endif #if HAS_Z4_MAX #if !AVAILABLE_EILINE(Z4_MAX_PIN) #error "Z4_MAX_PIN has no EXTINT line available." #endif attachInterrupt(Z4_MAX_PIN, endstop_ISR, CHANGE); #endif #if HAS_Z4_MIN #if !AVAILABLE_EILINE(Z4_MIN_PIN) #error "Z4_MIN_PIN has no EXTINT line available." #endif attachInterrupt(Z4_MIN_PIN, endstop_ISR, CHANGE); #endif #if HAS_Z_MIN_PROBE_PIN #if !AVAILABLE_EILINE(Z_MIN_PROBE_PIN) #error "Z_MIN_PROBE_PIN has no EXTINT line available." #endif attachInterrupt(Z_MIN_PROBE_PIN, endstop_ISR, CHANGE); #endif }