Add SMUFF support

Marlin/Configuration.h

@@ -158,33 +158,19 @@
 #endif
 
 /**
- * Průša MK2 Single Nozzle Multi-Material Multiplexer, and variants.
- *
- * This device allows one stepper driver on a control board to drive
- * two to eight stepper motors, one at a time, in a manner suitable
- * for extruders.
- *
- * This option only allows the multiplexer to switch on tool-change.
- * Additional options to configure custom E moves are pending.
- */
-//#define MK2_MULTIPLEXER
-#if ENABLED(MK2_MULTIPLEXER)
-  // Override the default DIO selector pins here, if needed.
-  // Some pins files may provide defaults for these pins.
-  //#define E_MUX0_PIN 40  // Always Required
-  //#define E_MUX1_PIN 42  // Needed for 3 to 8 inputs
-  //#define E_MUX2_PIN 44  // Needed for 5 to 8 inputs
-#endif
-
-/**
- * Průša Multi-Material Unit v2
+ * Multi-Material Unit
+ * Set to one of these predefined models:
  *
- * Requires NOZZLE_PARK_FEATURE to park print head in case MMU unit fails.
- * Requires EXTRUDERS = 5
+ *   PRUSA_MMU1      : Průša MMU1 (The "multiplexer" version)
+ *   PRUSA_MMU2      : Průša MMU2
+ *   PRUSA_MMU2S     : Průša MMU2S (Requires MK3S extruder with motion sensor, EXTRUDERS = 5)
+ *   SMUFF_EMU_MMU2  : Christian Gegg SMUFF (Průša MMU2 emulation mode)
+ *   SMUFF_EMU_MMU2S : Christian Gegg SMUFF (Průša MMU2S emulation mode)
  *
- * For additional configuration see Configuration_adv.h
+ * Requires NOZZLE_PARK_FEATURE to park print head in case MMU unit fails.
+ * See additional options in Configuration_adv.h.
  */
-//#define PRUSA_MMU2
+//#define MMU_MODEL PRUSA_MMU2
 
 // A dual extruder that uses a single stepper motor
 //#define SWITCHING_EXTRUDER

Marlin/Configuration_adv.h

@@ -3507,11 +3507,25 @@
 #endif
 
 /**
- * Průša Multi-Material Unit v2
+ * Průša Multi-Material Unit (MMU) multiplexer
  * Enable in Configuration.h
+ *
+ * These devices allow a single stepper driver on the board to drive
+ * two to eight stepper motors, one at a time, in a manner suitable
+ * for extruders.
  */
-#if ENABLED(PRUSA_MMU2)
-
+#if HAS_PRUSA_MMU1
+  /**
+   * This option only allows the multiplexer to switch on tool-change.
+   * Additional options to configure custom E moves are pending.
+   *
+   * Override the default DIO selector pins here, if needed.
+   * Some pins files may provide defaults for these pins.
+   */
+  //#define E_MUX0_PIN 40  // Always Required
+  //#define E_MUX1_PIN 42  // Needed for 3 to 8 inputs
+  //#define E_MUX2_PIN 44  // Needed for 5 to 8 inputs
+#elif HAS_PRUSA_MMU2
   // Serial port used for communication with MMU2.
   // For AVR enable the UART port used for the MMU. (e.g., mmuSerial)
   // For 32-bit boards check your HAL for available serial ports. (e.g., Serial2)
@@ -3554,29 +3568,12 @@
       { -50.0, 2000 }
   #endif
 
-  /**
-   * MMU Extruder Sensor
-   *
-   * Support for a Průša (or other) IR Sensor to detect filament near the extruder
-   * and make loading more reliable. Suitable for an extruder equipped with a filament
-   * sensor less than 38mm from the gears.
-   *
-   * During loading the extruder will stop when the sensor is triggered, then do a last
-   * move up to the gears. If no filament is detected, the MMU2 can make some more attempts.
-   * If all attempts fail, a filament runout will be triggered.
-   */
-  //#define MMU_EXTRUDER_SENSOR
-  #if ENABLED(MMU_EXTRUDER_SENSOR)
-    #define MMU_LOADING_ATTEMPTS_NR 5 // max. number of attempts to load filament if first load fail
-  #endif
-
   /**
    * Using a sensor like the MMU2S
    * This mode requires a MK3S extruder with a sensor at the extruder idler, like the MMU2S.
    * See https://help.prusa3d.com/en/guide/3b-mk3s-mk2-5s-extruder-upgrade_41560, step 11
    */
-  //#define PRUSA_MMU2_S_MODE
-  #if ENABLED(PRUSA_MMU2_S_MODE)
+  #if HAS_PRUSA_MMU2S
     #define MMU2_C0_RETRY   5             // Number of retries (total time = timeout*retries)
 
     #define MMU2_CAN_LOAD_FEEDRATE 800    // (mm/min)
@@ -3592,11 +3589,29 @@
     #define MMU2_CAN_LOAD_INCREMENT_SEQUENCE \
       { -MMU2_CAN_LOAD_INCREMENT, MMU2_CAN_LOAD_FEEDRATE }
 
+  #else
+
+    /**
+     * MMU1 Extruder Sensor
+     *
+     * Support for a Průša (or other) IR Sensor to detect filament near the extruder
+     * and make loading more reliable. Suitable for an extruder equipped with a filament
+     * sensor less than 38mm from the gears.
+     *
+     * During loading the extruder will stop when the sensor is triggered, then do a last
+     * move up to the gears. If no filament is detected, the MMU2 can make some more attempts.
+     * If all attempts fail, a filament runout will be triggered.
+     */
+    //#define MMU_EXTRUDER_SENSOR
+    #if ENABLED(MMU_EXTRUDER_SENSOR)
+      #define MMU_LOADING_ATTEMPTS_NR 5 // max. number of attempts to load filament if first load fail
+    #endif
+
   #endif
 
   //#define MMU2_DEBUG  // Write debug info to serial output
 
-#endif // PRUSA_MMU2
+#endif // HAS_PRUSA_MMU2
 
 /**
  * Advanced Print Counter settings

Marlin/src/HAL/LPC1768/inc/SanityCheck.h

@@ -97,8 +97,8 @@ static_assert(DISABLED(BAUD_RATE_GCODE), "BAUD_RATE_GCODE is not yet supported o
   #define IS_RX0(P) (P == P0_03)
   #if IS_TX0(TMC_SW_MISO) || IS_RX0(TMC_SW_MOSI)
     #error "Serial port pins (0) conflict with Trinamic SPI pins!"
-  #elif ENABLED(MK2_MULTIPLEXER) && (IS_TX0(E_MUX1_PIN) || IS_RX0(E_MUX0_PIN))
-    #error "Serial port pins (0) conflict with MK2 multiplexer pins!"
+  #elif HAS_PRUSA_MMU1 && (IS_TX0(E_MUX1_PIN) || IS_RX0(E_MUX0_PIN))
+    #error "Serial port pins (0) conflict with Multi-Material-Unit multiplexer pins!"
   #elif (AXIS_HAS_SPI(X) && IS_TX0(X_CS_PIN)) || (AXIS_HAS_SPI(Y) && IS_RX0(Y_CS_PIN))
     #error "Serial port pins (0) conflict with X/Y axis SPI pins!"
   #endif

Marlin/src/MarlinCore.cpp

@@ -213,8 +213,8 @@
   #include "feature/controllerfan.h"
 #endif
 
-#if ENABLED(PRUSA_MMU2)
-  #include "feature/mmu2/mmu2.h"
+#if HAS_PRUSA_MMU2
+  #include "feature/mmu/mmu2.h"
 #endif
 
 #if HAS_L64XX
@@ -772,7 +772,9 @@ void idle(TERN_(ADVANCED_PAUSE_FEATURE, bool no_stepper_sleep/*=false*/)) {
   #endif
 
   // Update the Průša MMU2
-  TERN_(PRUSA_MMU2, mmu2.mmu_loop());
+  #if HAS_PRUSA_MMU2
+    mmu2.mmu_loop();
+  #endif
 
   // Handle Joystick jogging
   TERN_(POLL_JOG, joystick.inject_jog_moves());
@@ -1179,8 +1181,8 @@ void setup() {
     SETUP_RUN(caselight.update_brightness());
   #endif
 
-  #if ENABLED(MK2_MULTIPLEXER)
-    SETUP_LOG("MK2_MULTIPLEXER");
+  #if HAS_PRUSA_MMU1
+    SETUP_LOG("PRUSA MMU1 MULTIPLEXER");
     SET_OUTPUT(E_MUX0_PIN);
     SET_OUTPUT(E_MUX1_PIN);
     SET_OUTPUT(E_MUX2_PIN);
@@ -1260,7 +1262,7 @@ void setup() {
     SETUP_RUN(test_tmc_connection(true, true, true, true));
   #endif
 
-  #if ENABLED(PRUSA_MMU2)
+  #if HAS_PRUSA_MMU2
     SETUP_RUN(mmu2.init());
   #endif
 

Marlin/src/feature/snmm.cpp → Marlin/src/feature/mmu/mmu.cpp

@@ -22,7 +22,7 @@
 
 #include "../inc/MarlinConfig.h"
 
-#if ENABLED(MK2_MULTIPLEXER)
+#if HAS_PRUSA_MMU1
 
 #include "../module/stepper.h"
 
@@ -35,4 +35,4 @@ void select_multiplexed_stepper(const uint8_t e) {
   safe_delay(100);
 }
 
-#endif // MK2_MULTIPLEXER
+#endif // HAS_PRUSA_MMU1