Method M303

Marlin/src/gcode/temp/M303.cpp:48–86

 */

void GcodeSuite::M303() {

  #if HAS_PID_DEBUG
    if (parser.seen_test('D')) {
      FLIP(thermalManager.pid_debug_flag);
      SERIAL_ECHO_MSG("PID Debug ", ON_OFF(thermalManager.pid_debug_flag));
      return;
    }
  #endif

  const heater_id_t hid = (heater_id_t)parser.intval('E');
  celsius_t default_temp;
  switch (hid) {
    OPTCODE(PIDTEMP,        case 0 ... HOTENDS - 1: default_temp = PREHEAT_1_TEMP_HOTEND;  break)
    OPTCODE(PIDTEMPBED,     case H_BED:             default_temp = PREHEAT_1_TEMP_BED;     break)
    OPTCODE(PIDTEMPCHAMBER, case H_CHAMBER:         default_temp = PREHEAT_1_TEMP_CHAMBER; break)
    default:
      SERIAL_ECHOPGM(STR_PID_AUTOTUNE);
      SERIAL_ECHOLNPGM(STR_PID_BAD_HEATER_ID);
      TERN_(EXTENSIBLE_UI, ExtUI::onPIDTuning(ExtUI::pidresult_t::PID_BAD_HEATER_ID));
      return;
  }

  const bool seenC = parser.seenval('C');
  const int c = seenC ? parser.value_int() : 5;
  const bool seenS = parser.seenval('S');
  const celsius_t temp = seenS ? parser.value_celsius() : default_temp;
  const bool u = parser.boolval('U');

  TERN_(EXTENSIBLE_UI, ExtUI::onStartM303(c, hid, temp));

  IF_DISABLED(BUSY_WHILE_HEATING, KEEPALIVE_STATE(NOT_BUSY));

  LCD_MESSAGE(MSG_PID_AUTOTUNE);
  thermalManager.PID_autotune(temp, hid, c, u);
  ui.reset_status();

  queue.flush_rx();
}

#endif // HAS_PID_HEATING