Firmware2/Marlin/src/gcode/temperature/M303.h

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/**
* Marlin 3D Printer Firmware
* Copyright (C) 2016 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 <http://www.gnu.org/licenses/>.
*
*/
/**
* M303: PID relay autotune
*
* S<temperature> sets the target temperature. (default 150C)
* E<extruder> (-1 for the bed) (default 0)
* C<cycles>
* U<bool> with a non-zero value will apply the result to current settings
*/
void gcode_M303() {
#if HAS_PID_HEATING
const int e = parser.intval('E'), c = parser.intval('C', 5);
const bool u = parser.boolval('U');
int16_t temp = parser.celsiusval('S', e < 0 ? 70 : 150);
if (WITHIN(e, 0, HOTENDS - 1))
target_extruder = e;
#if DISABLED(BUSY_WHILE_HEATING)
KEEPALIVE_STATE(NOT_BUSY);
#endif
thermalManager.PID_autotune(temp, e, c, u);
#if DISABLED(BUSY_WHILE_HEATING)
KEEPALIVE_STATE(IN_HANDLER);
#endif
#else
SERIAL_ERROR_START();
SERIAL_ERRORLNPGM(MSG_ERR_M303_DISABLED);
#endif
}