55 lines
1.6 KiB
C
55 lines
1.6 KiB
C
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/**
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* Marlin 3D Printer Firmware
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* Copyright (C) 2016 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
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*
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* Based on Sprinter and grbl.
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* Copyright (C) 2011 Camiel Gubbels / Erik van der Zalm
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*
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*/
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/**
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* M226: Wait until the specified pin reaches the state required (M226 P<pin> S<state>)
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*/
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void gcode_M226() {
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if (parser.seen('P')) {
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const int pin_number = parser.value_int(),
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pin_state = parser.intval('S', -1); // required pin state - default is inverted
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if (WITHIN(pin_state, -1, 1) && pin_number > -1 && !pin_is_protected(pin_number)) {
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int target = LOW;
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stepper.synchronize();
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pinMode(pin_number, INPUT);
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switch (pin_state) {
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case 1:
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target = HIGH;
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break;
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case 0:
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target = LOW;
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break;
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case -1:
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target = !digitalRead(pin_number);
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break;
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}
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while (digitalRead(pin_number) != target) idle();
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} // pin_state -1 0 1 && pin_number > -1
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} // parser.seen('P')
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}
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