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-rw-r--r--Marlin/src/gcode/feature/pause/G61.cpp73
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diff --git a/Marlin/src/gcode/feature/pause/G61.cpp b/Marlin/src/gcode/feature/pause/G61.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 SAVED_POSITIONS
+
+#include "../../../module/planner.h"
+#include "../../gcode.h"
+#include "../../../module/motion.h"
+
+/**
+ * G61: Return to saved position
+ *
+ * F<rate> - Feedrate (optional) for the move back.
+ * S<slot> - Slot # (0-based) to restore from (default 0).
+ * X Y Z - Axes to restore. At least one is required.
+ */
+void GcodeSuite::G61(void) {
+
+ const uint8_t slot = parser.byteval('S');
+
+ #if SAVED_POSITIONS < 256
+ if (slot >= SAVED_POSITIONS) {
+ SERIAL_ERROR_MSG(STR_INVALID_POS_SLOT STRINGIFY(SAVED_POSITIONS));
+ return;
+ }
+ #endif
+
+ // No saved position? No axes being restored?
+ if (!TEST(saved_slots[slot >> 3], slot & 0x07) || !parser.seen("XYZ")) return;
+
+ SERIAL_ECHOPAIR(STR_RESTORING_POS " S", int(slot));
+ LOOP_XYZ(i) {
+ destination[i] = parser.seen(XYZ_CHAR(i))
+ ? stored_position[slot][i] + parser.value_axis_units((AxisEnum)i)
+ : current_position[i];
+ SERIAL_CHAR(' ', XYZ_CHAR(i));
+ SERIAL_ECHO_F(destination[i]);
+ }
+ SERIAL_EOL();
+
+ // Apply any given feedrate over 0.0
+ feedRate_t saved_feedrate = feedrate_mm_s;
+ const float fr = parser.linearval('F');
+ if (fr > 0.0) feedrate_mm_s = MMM_TO_MMS(fr);
+
+ // Move to the saved position
+ prepare_line_to_destination();
+
+ feedrate_mm_s = saved_feedrate;
+}
+
+#endif // SAVED_POSITIONS