diff options
Diffstat (limited to 'Marlin/src/HAL/SAMD51/endstop_interrupts.h')
| -rw-r--r-- | Marlin/src/HAL/SAMD51/endstop_interrupts.h | 208 |
1 files changed, 208 insertions, 0 deletions
diff --git a/Marlin/src/HAL/SAMD51/endstop_interrupts.h b/Marlin/src/HAL/SAMD51/endstop_interrupts.h new file mode 100644 index 0000000..daac773 --- /dev/null +++ b/Marlin/src/HAL/SAMD51/endstop_interrupts.h @@ -0,0 +1,208 @@ +/** + * 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 <https://www.gnu.org/licenses/>. + * + */ +#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() { + #define _ATTACH(P) attachInterrupt(P, endstop_ISR, CHANGE) + #if HAS_X_MAX + #if !AVAILABLE_EILINE(X_MAX_PIN) + #error "X_MAX_PIN has no EXTINT line available." + #endif + _ATTACH(X_MAX_PIN); + #endif + #if HAS_X_MIN + #if !AVAILABLE_EILINE(X_MIN_PIN) + #error "X_MIN_PIN has no EXTINT line available." + #endif + _ATTACH(X_MIN_PIN); + #endif + #if HAS_Y_MAX + #if !AVAILABLE_EILINE(Y_MAX_PIN) + #error "Y_MAX_PIN has no EXTINT line available." + #endif + _ATTACH(Y_MAX_PIN); + #endif + #if HAS_Y_MIN + #if !AVAILABLE_EILINE(Y_MIN_PIN) + #error "Y_MIN_PIN has no EXTINT line available." + #endif + _ATTACH(Y_MIN_PIN); + #endif + #if HAS_Z_MAX + #if !AVAILABLE_EILINE(Z_MAX_PIN) + #error "Z_MAX_PIN has no EXTINT line available." + #endif + _ATTACH(Z_MAX_PIN); + #endif + #if HAS_Z_MIN + #if !AVAILABLE_EILINE(Z_MIN_PIN) + #error "Z_MIN_PIN has no EXTINT line available." + #endif + _ATTACH(Z_MIN_PIN); + #endif + #if HAS_Z2_MAX + #if !AVAILABLE_EILINE(Z2_MAX_PIN) + #error "Z2_MAX_PIN has no EXTINT line available." + #endif + _ATTACH(Z2_MAX_PIN); + #endif + #if HAS_Z2_MIN + #if !AVAILABLE_EILINE(Z2_MIN_PIN) + #error "Z2_MIN_PIN has no EXTINT line available." + #endif + _ATTACH(Z2_MIN_PIN); + #endif + #if HAS_Z3_MAX + #if !AVAILABLE_EILINE(Z3_MAX_PIN) + #error "Z3_MAX_PIN has no EXTINT line available." + #endif + _ATTACH(Z3_MAX_PIN); + #endif + #if HAS_Z3_MIN + #if !AVAILABLE_EILINE(Z3_MIN_PIN) + #error "Z3_MIN_PIN has no EXTINT line available." + #endif + _ATTACH(Z3_MIN_PIN); + #endif + #if HAS_Z4_MAX + #if !AVAILABLE_EILINE(Z4_MAX_PIN) + #error "Z4_MAX_PIN has no EXTINT line available." + #endif + _ATTACH(Z4_MAX_PIN); + #endif + #if HAS_Z4_MIN + #if !AVAILABLE_EILINE(Z4_MIN_PIN) + #error "Z4_MIN_PIN has no EXTINT line available." + #endif + _ATTACH(Z4_MIN_PIN); + #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 + _ATTACH(Z_MIN_PROBE_PIN); + #endif +} |