Method M302

Marlin/src/gcode/config/M302.cpp:50–66

* M302: Allow cold extrudes, or set the minimum extrude temperature * * S sets the minimum extrude temperature * P enables (1) or disables (0) cold extrusion * * Examples: * * M302 ; report current cold extrusion state * M302 P0 ; enable cold extrusion checking * M302 P1 ; disable cold extrusion checking * M302 S0

 *       M302 S170 P1 ; set min extrude temp to 170 but leave disabled
 */
void GcodeSuite::M302() {
  const bool seen_S = parser.seen('S');
  if (seen_S) {
    thermalManager.extrude_min_temp = parser.value_celsius();
    TERN_(EXTENSIBLE_UI, ExtUI::onSetMinExtrusionTemp(thermalManager.extrude_min_temp));
  }

  const bool seen_P = parser.seen('P');
  if (seen_P || seen_S) {
    thermalManager.allow_cold_extrude = (thermalManager.extrude_min_temp == 0) || (seen_P && parser.value_bool());
  }
  else {
    // Report current state
    SERIAL_ECHO_START();
    SERIAL_ECHOLN(F("Cold extrudes are "), thermalManager.allow_cold_extrude ? F("en") : F("dis"), F("abled (min temp "), thermalManager.extrude_min_temp, F("C)"));
  }
}

#endif // PREVENT_COLD_EXTRUSION