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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/>.
*
*/
#pragma once
#include "../../inc/MarlinConfig.h"
#if HAS_FILAMENT_SENSOR
#include "../runout.h"
#endif
#if SERIAL_USB
#define MMU_RX_SIZE 256
#define MMU_TX_SIZE 256
#else
#define MMU_RX_SIZE 16
#define MMU_TX_SIZE 16
#endif
struct E_Step;
class MMU2 {
public:
MMU2();
static void init();
static void reset();
static void mmu_loop();
static void tool_change(const uint8_t index);
static void tool_change(const char* special);
static uint8_t get_current_tool();
static void set_filament_type(const uint8_t index, const uint8_t type);
static bool unload();
static void load_filament(uint8_t);
static void load_all();
static bool load_filament_to_nozzle(const uint8_t index);
static bool eject_filament(const uint8_t index, const bool recover);
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, const int argument);
static void tx_printf_P(const char* format, const int argument1, const int argument2);
static void clear_rx_buffer();
static bool rx_ok();
static bool rx_start();
static void check_version();
static void command(const uint8_t cmd);
static bool get_response();
static void manage_response(const bool move_axes, const bool turn_off_nozzle);
static void load_to_nozzle();
static void execute_extruder_sequence(const E_Step * sequence, int steps);
static void filament_runout();
#if HAS_PRUSA_MMU2S
static bool mmu2s_triggered;
static void check_filament();
static bool can_load();
static bool load_to_gears();
#else
FORCE_INLINE static bool load_to_gears() { return true; }
#endif
#if ENABLED(MMU_EXTRUDER_SENSOR)
static void mmu_continue_loading();
#endif
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 finda_runout_valid;
static int16_t version, buildnr;
static millis_t prev_request, prev_P0_request;
static char rx_buffer[MMU_RX_SIZE], tx_buffer[MMU_TX_SIZE];
static inline void set_runout_valid(const bool valid) {
finda_runout_valid = valid;
#if HAS_FILAMENT_SENSOR
if (valid) runout.reset();
#endif
}
};
extern MMU2 mmu2;
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