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C++

/**
* Marlin 3D Printer Firmware
* Copyright (C) 2019 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/>.
*
*/
#include "../gcode.h"
#include "../../core/serial.h"
#include "../../module/printcounter.h"
#include "../../libs/duration_t.h"
#include "../../lcd/ultralcd.h"
/**
* M31: Get the time since the start of SD Print (or last M109)
*/
void GcodeSuite::M31() {
char buffer[21];
duration_t elapsed = print_job_timer.duration();
elapsed.toString(buffer);
ui.set_status(buffer);
SERIAL_ECHO_START();
SERIAL_ECHOLNPAIR("Print time: ", buffer);
}