Starting with Stock BTT-Config and Old Configs as Backup

Marlin/src/gcode/feature/powerloss/M413.cpp

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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 "../../../inc/MarlinConfig.h"
+
+#if ENABLED(POWER_LOSS_RECOVERY)
+
+#include "../../gcode.h"
+#include "../../../feature/powerloss.h"
+#include "../../../module/motion.h"
+#include "../../../lcd/marlinui.h"
+
+/**
+ * M413: Enable / Disable power-loss recovery
+ *
+ * Parameters
+ *   S[bool] - Flag to enable / disable.
+ *             If omitted, report current state.
+ */
+void GcodeSuite::M413() {
+
+  if (parser.seen('S'))
+    recovery.enable(parser.value_bool());
+  else {
+    SERIAL_ECHO_START();
+    SERIAL_ECHOPGM("Power-loss recovery ");
+    serialprintln_onoff(recovery.enabled);
+  }
+
+  #if ENABLED(DEBUG_POWER_LOSS_RECOVERY)
+    if (parser.seen("RL")) recovery.load();
+    if (parser.seen_test('W')) recovery.save(true);
+    if (parser.seen_test('P')) recovery.purge();
+    if (parser.seen_test('D')) recovery.debug(PSTR("M413"));
+    #if PIN_EXISTS(POWER_LOSS)
+      if (parser.seen_test('O')) recovery._outage();
+    #endif
+    if (parser.seen_test('E')) SERIAL_ECHOPGM_P(recovery.exists() ? PSTR("PLR Exists\n") : PSTR("No PLR\n"));
+    if (parser.seen_test('V')) SERIAL_ECHOPGM_P(recovery.valid() ? PSTR("Valid\n") : PSTR("Invalid\n"));
+  #endif
+}
+
+#endif // POWER_LOSS_RECOVERY