/**
 * 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/>.
 *
 */

/**
 * M113: Get or set Host Keepalive interval (0 to disable)
 *
 *   S<seconds> Optional. Set the keepalive interval.
 */
void gcode_M113() {
  if (parser.seenval('S')) {
    host_keepalive_interval = parser.value_byte();
    NOMORE(host_keepalive_interval, 60);
  }
  else {
    SERIAL_ECHO_START();
    SERIAL_ECHOLNPAIR("M113 S", (unsigned long)host_keepalive_interval);
  }
}