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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 <http://www.gnu.org/licenses/>.
- *
- */
-
- #include "../gcode.h"
- #include "../../core/serial.h"
-
- /**
- * M118: Display a message in the host console.
- *
- * A1 Prepend '// ' for an action command, as in OctoPrint
- * E1 Have the host 'echo:' the text
- * Pn Redirect to another serial port
- * 0 : Announce to all ports
- * 1-9 : Serial ports 1 to 9
- */
- void GcodeSuite::M118() {
- bool hasE = false, hasA = false;
- #if NUM_SERIAL > 1
- int8_t port = -1; // Assume no redirect
- #endif
- char *p = parser.string_arg;
- for (uint8_t i = 3; i--;) {
- // A1, E1, and Pn are always parsed out
- if (!( ((p[0] == 'A' || p[0] == 'E') && p[1] == '1') || (p[0] == 'P' && NUMERIC(p[1])) )) break;
- switch (p[0]) {
- case 'A': hasA = true; break;
- case 'E': hasE = true; break;
- #if NUM_SERIAL > 1
- case 'P': port = p[1] - '0'; break;
- #endif
- }
- p += 2;
- while (*p == ' ') ++p;
- }
-
- #if NUM_SERIAL > 1
- const int8_t old_serial = serial_port_index;
- if (WITHIN(port, 0, NUM_SERIAL))
- serial_port_index = (
- port == 0 ? SERIAL_BOTH
- : port == 1 ? SERIAL_PORT
- #ifdef SERIAL_PORT_2
- : port == 2 ? SERIAL_PORT_2
- #endif
- : SERIAL_PORT
- );
- #endif
-
- if (hasE) SERIAL_ECHO_START();
- if (hasA) SERIAL_ECHOPGM("// ");
- SERIAL_ECHOLN(p);
-
- #if NUM_SERIAL > 1
- serial_port_index = old_serial;
- #endif
- }
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