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@ -9436,6 +9436,39 @@ inline void gcode_M503() {
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#endif // ADVANCED_PAUSE_FEATURE
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#if ENABLED(MK2_MULTIPLEXER)
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inline void select_multiplexed_stepper(const uint8_t e) {
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stepper.synchronize();
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disable_e_steppers();
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WRITE(E_MUX0_PIN, TEST(e, 0) ? HIGH : LOW);
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WRITE(E_MUX1_PIN, TEST(e, 1) ? HIGH : LOW);
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WRITE(E_MUX2_PIN, TEST(e, 2) ? HIGH : LOW);
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safe_delay(100);
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}
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/**
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* M702: Unload all extruders
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*/
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inline void gcode_M702() {
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for (uint8_t s = 0; s < E_STEPPERS; s++) {
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select_multiplexed_stepper(e);
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// TODO: standard unload filament function
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// MK2 firmware behavior:
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// - Make sure temperature is high enough
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// - Raise Z to at least 15 to make room
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// - Extrude 1cm of filament in 1 second
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// - Under 230C quickly purge ~12mm, over 230C purge ~10mm
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// - Change E max feedrate to 80, eject the filament from the tube. Sync.
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// - Restore E max feedrate to 50
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}
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// Go back to the last active extruder
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select_multiplexed_stepper(active_extruder);
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disable_e_steppers();
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}
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#endif // MK2_MULTIPLEXER
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#if ENABLED(DUAL_X_CARRIAGE)
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/**
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@ -10257,14 +10290,23 @@ void tool_change(const uint8_t tmp_extruder, const float fr_mm_s/*=0.0*/, bool n
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UNUSED(fr_mm_s);
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UNUSED(no_move);
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// Set the new active extruder
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active_extruder = tmp_extruder;
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#if ENABLED(SWITCHING_EXTRUDER) && !DONT_SWITCH
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stepper.synchronize();
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move_extruder_servo(tmp_extruder);
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#elif ENABLED(MK2_MULTIPLEXER)
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if (tmp_extruder >= E_STEPPERS)
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return invalid_extruder_error(tmp_extruder);
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select_multiplexed_stepper(tmp_extruder);
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#endif
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#endif // HOTENDS <= 1
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#if ENABLED(SWITCHING_EXTRUDER) && !DONT_SWITCH
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move_extruder_servo(active_extruder);
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#endif
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active_extruder = tmp_extruder;
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SERIAL_ECHO_START();
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SERIAL_ECHOLNPAIR(MSG_ACTIVE_EXTRUDER, (int)active_extruder);
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@ -11001,6 +11043,12 @@ void process_next_command() {
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break;
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#endif // DUAL_X_CARRIAGE
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#if ENABLED(MK2_MULTIPLEXER)
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case 702: // M702: Unload all extruders
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gcode_M702();
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break;
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#endif
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#if ENABLED(LIN_ADVANCE)
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case 900: // M900: Set advance K factor.
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gcode_M900();
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@ -12968,6 +13016,12 @@ void setup() {
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#endif
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#endif
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#if ENABLED(MK2_MULTIPLEXER)
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SET_OUTPUT(E_MUX0_PIN);
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SET_OUTPUT(E_MUX1_PIN);
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SET_OUTPUT(E_MUX2_PIN);
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#endif
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lcd_init();
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#if ENABLED(SHOW_BOOTSCREEN)
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#if ENABLED(DOGLCD)
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Scott Lahteine
7 years ago