Prusa MMU2 (#12967)

Marlin/src/feature/prusa_MMU2/mmu2.h

@@ -0,0 +1,82 @@
+/**
+ * Marlin 3D Printer Firmware
+ * Copyright (C) 2016 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/>.
+ *
+ */
+
+#pragma once
+
+#include "../../inc/MarlinConfig.h"
+
+struct E_Step;
+
+class MMU2 {
+public:
+  MMU2();
+
+  static void init();
+  static void reset();
+  static void mmuLoop();
+  static void toolChange(uint8_t index);
+  static void toolChange(const char* special);
+  static uint8_t getCurrentTool();
+  static void setFilamentType(uint8_t index, uint8_t type);
+
+  #if HAS_LCD_MENU && ENABLED(MMU2_MENUS)
+    static bool unload();
+    static void loadFilament(uint8_t);
+    static void loadAll();
+    static bool loadFilamentToNozzle(uint8_t index);
+    static bool ejectFilament(uint8_t index, bool recover);
+  #endif
+
+private:
+  static bool rx_str_P(const char* str);
+  static void tx_str_P(const char* str);
+  static void tx_printf_P(const char* format, int argument);
+  static void tx_printf_P(const char* format, int argument1, int argument2);
+  static void clear_rx_buffer();
+
+  static bool rx_ok();
+  static bool rx_start();
+  static void checkVersion();
+
+  static void command(const uint8_t cmd);
+  static bool getResponse(void);
+  static void manageResponse(bool move_axes, bool turn_off_nozzle);
+
+  #if HAS_LCD_MENU && ENABLED(MMU2_MENUS)
+    static void loadToNozzle();
+    static void filamentRamming();
+    static void executeExtruderSequence(const E_Step * sequence, int steps);
+  #endif
+
+  static void filamentRunout();
+
+  static bool enabled, ready, mmu_print_saved;
+  static uint8_t cmd, cmd_arg, last_cmd, extruder;
+  static int8_t state;
+  static volatile int8_t finda;
+  static volatile bool findaRunoutValid;
+  static int16_t version, buildnr;
+  static millis_t next_request, next_response;
+  static char rx_buffer[16], tx_buffer[16];
+};
+
+extern MMU2 mmu2;