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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/>.
- *
- */
-
- #include "../../inc/MarlinConfig.h"
-
- #if ENABLED(DIRECT_PIN_CONTROL)
-
- #include "../gcode.h"
- #include "../../MarlinCore.h" // for pin_is_protected and idle()
- #include "../../module/stepper.h"
-
- void protected_pin_err();
-
- /**
- * M226: Wait until the specified pin reaches the state required (M226 P<pin> S<state>)
- */
- void GcodeSuite::M226() {
- if (parser.seen('P')) {
- const int pin_number = PARSED_PIN_INDEX('P', 0),
- pin_state = parser.intval('S', -1); // required pin state - default is inverted
- const pin_t pin = GET_PIN_MAP_PIN(pin_number);
-
- if (WITHIN(pin_state, -1, 1) && pin > -1) {
- if (pin_is_protected(pin))
- protected_pin_err();
- else {
- int target = LOW;
- planner.synchronize();
- pinMode(pin, INPUT);
- switch (pin_state) {
- case 1: target = HIGH; break;
- case 0: target = LOW; break;
- case -1: target = !extDigitalRead(pin); break;
- }
- while (int(extDigitalRead(pin)) != target) idle();
- }
- } // pin_state -1 0 1 && pin > -1
- } // parser.seen('P')
- }
-
- #endif // DIRECT_PIN_CONTROL
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