1 files changed, 72 insertions, 0 deletions
diff --git a/Marlin/src/gcode/sd/M28_M29.cpp b/Marlin/src/gcode/sd/M28_M29.cpp
new file mode 100644
index 0000000..6f3f245
--- /dev/null
+++ b/Marlin/src/gcode/sd/M28_M29.cpp
@@ -0,0 +1,72 @@
+/**
+ * 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(SDSUPPORT)
+
+#include "../gcode.h"
+#include "../../sd/cardreader.h"
+
+#if HAS_MULTI_SERIAL
+  #include "../queue.h"
+#endif
+
+/**
+ * M28: Start SD Write
+ */
+void GcodeSuite::M28() {
+
+  #if ENABLED(BINARY_FILE_TRANSFER)
+
+    bool binary_mode = false;
+    char *p = parser.string_arg;
+    if (p[0] == 'B' && NUMERIC(p[1])) {
+      binary_mode = p[1] > '0';
+      p += 2;
+      while (*p == ' ') ++p;
+    }
+
+    // Binary transfer mode
+    if ((card.flag.binary_mode = binary_mode)) {
+      SERIAL_ECHO_MSG("Switching to Binary Protocol");
+      TERN_(HAS_MULTI_SERIAL, card.transfer_port_index = queue.port[queue.index_r]);
+    }
+    else
+      card.openFileWrite(p);
+
+  #else
+
+    card.openFileWrite(parser.string_arg);
+
+  #endif
+}
+
+/**
+ * M29: Stop SD Write
+ * (Processed in write-to-file routine)
+ */
+void GcodeSuite::M29() {
+  card.flag.saving = false;
+}
+
+#endif // SDSUPPORT