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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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