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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 "../gcode.h"
-
- #include "../../lcd/marlinui.h" // for ui.reset_alert_level
- #include "../../MarlinCore.h" // for marlin_state
- #include "../queue.h" // for flush_and_request_resend
-
- /**
- * M999: Restart after being stopped
- *
- * Default behavior is to flush the serial buffer and request
- * a resend to the host starting on the last N line received.
- *
- * Sending "M999 S1" will resume printing without flushing the
- * existing command buffer.
- */
- void GcodeSuite::M999() {
- marlin_state = MF_RUNNING;
- ui.reset_alert_level();
-
- if (parser.boolval('S')) return;
-
- queue.flush_and_request_resend(queue.ring_buffer.command_port());
- }
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