1 files changed, 88 insertions, 0 deletions
diff --git a/Marlin/src/gcode/control/M993_M994.cpp b/Marlin/src/gcode/control/M993_M994.cpp
new file mode 100644
index 0000000..ff9ff85
--- /dev/null
+++ b/Marlin/src/gcode/control/M993_M994.cpp
@@ -0,0 +1,88 @@
+/**
+ * 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 ALL(HAS_SPI_FLASH, SDSUPPORT, MARLIN_DEV_MODE)
+
+#include "../gcode.h"
+#include "../../sd/cardreader.h"
+#include "../../libs/W25Qxx.h"
+
+/**
+ * M993: Backup SPI Flash to SD
+ */
+void GcodeSuite::M993() {
+  if (!card.isMounted()) card.mount();
+
+  char fname[] = "spiflash.bin";
+  card.openFileWrite(fname);
+  if (!card.isFileOpen()) {
+    SERIAL_ECHOLNPAIR("Failed to open ", fname, " to write.");
+    return;
+  }
+
+  uint8_t buf[1024];
+  uint32_t addr = 0;
+  W25QXX.init(SPI_QUARTER_SPEED);
+  SERIAL_ECHOPGM("Save SPI Flash");
+  while (addr < SPI_FLASH_SIZE) {
+    W25QXX.SPI_FLASH_BufferRead(buf, addr, COUNT(buf));
+    addr += COUNT(buf);
+    card.write(buf, COUNT(buf));
+    if (addr % (COUNT(buf) * 10) == 0) SERIAL_CHAR('.');
+  }
+  SERIAL_ECHOLNPGM(" done");
+
+  card.closefile();
+}
+
+/**
+ * M994: Load a backup from SD to SPI Flash
+ */
+void GcodeSuite::M994() {
+  if (!card.isMounted()) card.mount();
+
+  char fname[] = "spiflash.bin";
+  card.openFileRead(fname);
+  if (!card.isFileOpen()) {
+    SERIAL_ECHOLNPAIR("Failed to open ", fname, " to read.");
+    return;
+  }
+
+  uint8_t buf[1024];
+  uint32_t addr = 0;
+  W25QXX.init(SPI_QUARTER_SPEED);
+  W25QXX.SPI_FLASH_BulkErase();
+  SERIAL_ECHOPGM("Load SPI Flash");
+  while (addr < SPI_FLASH_SIZE) {
+    card.read(buf, COUNT(buf));
+    W25QXX.SPI_FLASH_BufferWrite(buf, addr, COUNT(buf));
+    addr += COUNT(buf);
+    if (addr % (COUNT(buf) * 10) == 0) SERIAL_CHAR('.');
+  }
+  SERIAL_ECHOLNPGM(" done");
+
+  card.closefile();
+}
+
+#endif // HAS_SPI_FLASH && SDSUPPORT && MARLIN_DEV_MODE