diff --git a/Marlin/Configuration.h b/Marlin/Configuration.h
index 060c07bbbc..71a9211330 100644
--- a/Marlin/Configuration.h
+++ b/Marlin/Configuration.h
@@ -2825,6 +2825,11 @@
//#define REPRAPWORLD_KEYPAD
//#define REPRAPWORLD_KEYPAD_MOVE_STEP 10.0 // (mm) Distance to move per key-press
+//
+// EasyThreeD ET-4000+ with button input and status LED
+//
+//#define EASYTHREED_UI
+
//=============================================================================
//=============================== Extra Features ==============================
//=============================================================================
diff --git a/Marlin/src/MarlinCore.cpp b/Marlin/src/MarlinCore.cpp
index ea486abfcd..5132d07e87 100644
--- a/Marlin/src/MarlinCore.cpp
+++ b/Marlin/src/MarlinCore.cpp
@@ -248,6 +248,10 @@
#include "feature/power.h"
#endif
+#if ENABLED(EASYTHREED_UI)
+ #include "feature/easythreed_ui.h"
+#endif
+
PGMSTR(M112_KILL_STR, "M112 Shutdown");
MarlinState marlin_state = MF_INITIALIZING;
@@ -637,6 +641,8 @@ inline void manage_inactivity(const bool no_stepper_sleep=false) {
#endif
#endif
+ TERN_(EASYTHREED_UI, easythreed_ui.run());
+
TERN_(USE_CONTROLLER_FAN, controllerFan.update()); // Check if fan should be turned on to cool stepper drivers down
TERN_(AUTO_POWER_CONTROL, powerManager.check(!ui.on_status_screen() || printJobOngoing() || printingIsPaused()));
@@ -1609,6 +1615,10 @@ void setup() {
SETUP_RUN(ui.check_touch_calibration());
#endif
+ #if ENABLED(EASYTHREED_UI)
+ SETUP_RUN(easythreed_ui.init());
+ #endif
+
marlin_state = MF_RUNNING;
SETUP_LOG("setup() completed.");
diff --git a/Marlin/src/feature/easythreed_ui.cpp b/Marlin/src/feature/easythreed_ui.cpp
new file mode 100644
index 0000000000..3eff233c01
--- /dev/null
+++ b/Marlin/src/feature/easythreed_ui.cpp
@@ -0,0 +1,236 @@
+/**
+ * Marlin 3D Printer Firmware
+ * Copyright (c) 2021 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 .
+ *
+ */
+
+#include "../inc/MarlinConfigPre.h"
+
+#if ENABLED(EASYTHREED_UI)
+
+#include "easythreed_ui.h"
+#include "pause.h"
+#include "../module/temperature.h"
+#include "../module/printcounter.h"
+#include "../sd/cardreader.h"
+#include "../gcode/queue.h"
+#include "../module/motion.h"
+#include "../module/planner.h"
+#include "../MarlinCore.h"
+
+EasythreedUI easythreed_ui;
+
+#define BTN_DEBOUNCE_MS 20
+
+void EasythreedUI::init() {
+ SET_INPUT_PULLUP(BTN_HOME); SET_OUTPUT(BTN_HOME_GND);
+ SET_INPUT_PULLUP(BTN_FEED); SET_OUTPUT(BTN_FEED_GND);
+ SET_INPUT_PULLUP(BTN_RETRACT); SET_OUTPUT(BTN_RETRACT_GND);
+ SET_INPUT_PULLUP(BTN_PRINT);
+ SET_OUTPUT(EASYTHREED_LED_PIN);
+}
+
+void EasythreedUI::run() {
+ blinkLED();
+ loadButton();
+ printButton();
+}
+
+enum LEDInterval : uint16_t {
+ LED_OFF = 0,
+ LED_ON = 4000,
+ LED_BLINK_0 = 2500,
+ LED_BLINK_1 = 1500,
+ LED_BLINK_2 = 1000,
+ LED_BLINK_3 = 800,
+ LED_BLINK_4 = 500,
+ LED_BLINK_5 = 300,
+ LED_BLINK_6 = 150,
+ LED_BLINK_7 = 50
+};
+
+uint16_t blink_interval_ms = LED_ON; // Status LED on Start button
+
+void EasythreedUI::blinkLED() {
+ static millis_t prev_blink_interval_ms = 0, blink_start_ms = 0;
+
+ if (blink_interval_ms == LED_OFF) { WRITE(EASYTHREED_LED_PIN, HIGH); return; } // OFF
+ if (blink_interval_ms >= LED_ON) { WRITE(EASYTHREED_LED_PIN, LOW); return; } // ON
+
+ const millis_t ms = millis();
+ if (prev_blink_interval_ms != blink_interval_ms) {
+ prev_blink_interval_ms = blink_interval_ms;
+ blink_start_ms = ms;
+ }
+ if (PENDING(ms, blink_start_ms + blink_interval_ms))
+ WRITE(EASYTHREED_LED_PIN, LOW);
+ else if (PENDING(ms, blink_start_ms + 2 * blink_interval_ms))
+ WRITE(EASYTHREED_LED_PIN, HIGH);
+ else
+ blink_start_ms = ms;
+}
+
+//
+// Filament Load/Unload Button
+// Load/Unload buttons are a 3 position switch with a common center ground.
+//
+void EasythreedUI::loadButton() {
+ if (printingIsActive()) return;
+
+ enum FilamentStatus : uint8_t { FS_IDLE, FS_PRESS, FS_CHECK, FS_PROCEED };
+ static uint8_t filament_status = FS_IDLE;
+ static millis_t filament_time = 0;
+
+ switch (filament_status) {
+
+ case FS_IDLE:
+ if (!READ(BTN_RETRACT) || !READ(BTN_FEED)) { // If feed/retract switch is toggled...
+ filament_status++; // ...proceed to next test.
+ filament_time = millis();
+ }
+ break;
+
+ case FS_PRESS:
+ if (ELAPSED(millis(), filament_time + BTN_DEBOUNCE_MS)) { // After a short debounce delay...
+ if (!READ(BTN_RETRACT) || !READ(BTN_FEED)) { // ...if switch still toggled...
+ thermalManager.setTargetHotend(EXTRUDE_MINTEMP + 10, 0); // Start heating up
+ blink_interval_ms = LED_BLINK_7; // Set the LED to blink fast
+ filament_status++;
+ }
+ else
+ filament_status = FS_IDLE; // Switch not toggled long enough
+ }
+ break;
+
+ case FS_CHECK:
+ if (READ(BTN_RETRACT) && READ(BTN_FEED)) { // Switch in center position (stop)
+ blink_interval_ms = LED_ON; // LED on steady
+ filament_status = FS_IDLE;
+ thermalManager.disable_all_heaters();
+ }
+ else if (thermalManager.hotEnoughToExtrude(0)) { // Is the hotend hot enough to move material?
+ filament_status++; // Proceed to feed / retract.
+ blink_interval_ms = LED_BLINK_5; // Blink ~3 times per second
+ }
+ break;
+
+ case FS_PROCEED: {
+ // Feed or Retract just once. Hard abort all moves and return to idle on swicth release.
+ static bool flag = false;
+ if (READ(BTN_RETRACT) && READ(BTN_FEED)) { // Switch in center position (stop)
+ flag = false; // Restore flag to false
+ filament_status = FS_IDLE; // Go back to idle state
+ quickstop_stepper(); // Hard-stop all the steppers ... now!
+ thermalManager.disable_all_heaters(); // And disable all the heaters
+ blink_interval_ms = LED_ON;
+ }
+ else if (!flag) {
+ flag = true;
+ queue.inject(!READ(BTN_RETRACT) ? F("G91\nG0 E10 F180\nG0 E-120 F180\nM104 S0") : F("G91\nG0 E100 F120\nM104 S0"));
+ }
+ } break;
+ }
+
+}
+
+#if HAS_STEPPER_RESET
+ void disableStepperDrivers();
+#endif
+
+//
+// Print Start/Pause/Resume Button
+//
+void EasythreedUI::printButton() {
+ enum KeyStatus : uint8_t { KS_IDLE, KS_PRESS, KS_PROCEED };
+ static uint8_t key_status = KS_IDLE;
+ static millis_t key_time = 0;
+
+ enum PrintFlag : uint8_t { PF_START, PF_PAUSE, PF_RESUME };
+ static PrintFlag print_key_flag = PF_START;
+
+ const millis_t ms = millis();
+
+ switch (key_status) {
+ case KS_IDLE:
+ if (!READ(BTN_PRINT)) { // Print/Pause/Resume button pressed?
+ key_time = ms; // Save start time
+ key_status++; // Go to debounce test
+ }
+ break;
+
+ case KS_PRESS:
+ if (ELAPSED(ms, key_time + BTN_DEBOUNCE_MS)) // Wait for debounce interval to expire
+ key_status = READ(BTN_PRINT) ? KS_IDLE : KS_PROCEED; // Proceed if still pressed
+ break;
+
+ case KS_PROCEED:
+ if (!READ(BTN_PRINT)) break; // Wait for the button to be released
+ key_status = KS_IDLE; // Ready for the next press
+ if (PENDING(ms, key_time + 1200 - BTN_DEBOUNCE_MS)) { // Register a press < 1.2 seconds
+ switch (print_key_flag) {
+ case PF_START: { // The "Print" button starts an SD card print
+ if (printingIsActive()) break; // Already printing? (find another line that checks for 'is planner doing anything else right now?')
+ blink_interval_ms = LED_BLINK_2; // Blink the indicator LED at 1 second intervals
+ print_key_flag = PF_PAUSE; // The "Print" button now pauses the print
+ card.mount(); // Force SD card to mount - now!
+ if (!card.isMounted) { // Failed to mount?
+ blink_interval_ms = LED_OFF; // Turn off LED
+ print_key_flag = PF_START;
+ return; // Bail out
+ }
+ card.ls(); // List all files to serial output
+ const uint16_t filecnt = card.countFilesInWorkDir(); // Count printable files in cwd
+ if (filecnt == 0) return; // None are printable?
+ card.selectFileByIndex(filecnt); // Select the last file according to current sort options
+ card.openAndPrintFile(card.filename); // Start printing it
+ break;
+ }
+ case PF_PAUSE: { // Pause printing (not currently firing)
+ if (!printingIsActive()) break;
+ blink_interval_ms = LED_ON; // Set indicator to steady ON
+ queue.inject(F("M25")); // Queue Pause
+ print_key_flag = PF_RESUME; // The "Print" button now resumes the print
+ break;
+ }
+ case PF_RESUME: { // Resume printing
+ if (printingIsActive()) break;
+ blink_interval_ms = LED_BLINK_2; // Blink the indicator LED at 1 second intervals
+ queue.inject(F("M24")); // Queue resume
+ print_key_flag = PF_PAUSE; // The "Print" button now pauses the print
+ break;
+ }
+ }
+ }
+ else { // Register a longer press
+ if (print_key_flag == PF_START && !printingIsActive()) { // While not printing, this moves Z up 10mm
+ blink_interval_ms = LED_ON;
+ queue.inject(F("G91\nG0 Z10 F600\nG90")); // Raise Z soon after returning to main loop
+ }
+ else { // While printing, cancel print
+ card.abortFilePrintSoon(); // There is a delay while the current steps play out
+ blink_interval_ms = LED_OFF; // Turn off LED
+ }
+ planner.synchronize(); // Wait for commands already in the planner to finish
+ TERN_(HAS_STEPPER_RESET, disableStepperDrivers()); // Disable all steppers - now!
+ print_key_flag = PF_START; // The "Print" button now starts a new print
+ }
+ break;
+ }
+}
+#endif // EASYTHREED_UI
diff --git a/Marlin/src/feature/easythreed_ui.h b/Marlin/src/feature/easythreed_ui.h
new file mode 100644
index 0000000000..af9ad2d090
--- /dev/null
+++ b/Marlin/src/feature/easythreed_ui.h
@@ -0,0 +1,35 @@
+/**
+ * Marlin 3D Printer Firmware
+ * Copyright (c) 2021 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 .
+ *
+ */
+#pragma once
+
+class EasythreedUI {
+ public:
+ static void init();
+ static void run();
+
+ private:
+ static void blinkLED();
+ static void loadButton();
+ static void printButton();
+};
+
+extern EasythreedUI easythreed_ui;
diff --git a/Marlin/src/pins/stm32f1/pins_MKS_ROBIN_LITE.h b/Marlin/src/pins/stm32f1/pins_MKS_ROBIN_LITE.h
index 94f7313996..9f33d4392a 100644
--- a/Marlin/src/pins/stm32f1/pins_MKS_ROBIN_LITE.h
+++ b/Marlin/src/pins/stm32f1/pins_MKS_ROBIN_LITE.h
@@ -79,31 +79,51 @@
#define FIL_RUNOUT_PIN PB8 // MT_DET
+/** ------
+ * (BEEPER) PD2 |10 9 | PB3 (BTN_ENC)
+ * (BTN_EN1) PB5 | 8 7 | PA11 (RESET?)
+ * (BTN_EN2) PB4 6 5 | PC1 (LCD_D4)
+ * (LCD_RS) PC3 | 4 3 | PC2 (LCD_EN)
+ * GND | 2 1 | 5V
+ * ------
+ * "E3" EXP1
+ */
+#define E3_EXP1_01_PIN -1 // 5V
+#define E3_EXP1_02_PIN -1 // GND
+#define E3_EXP1_03_PIN PC2
+#define E3_EXP1_04_PIN PC3
+#define E3_EXP1_05_PIN PC1
+#define E3_EXP1_06_PIN PB4
+#define E3_EXP1_07_PIN PA11 // RESET?
+#define E3_EXP1_08_PIN PB5
+#define E3_EXP1_09_PIN PB3
+#define E3_EXP1_10_PIN PD2
+
//
// LCD Pins
//
#if HAS_WIRED_LCD
- #define BEEPER_PIN PD2
- #define BTN_ENC PB3
- #define LCD_PINS_RS PC3
+ #define BEEPER_PIN E3_EXP1_10_PIN
+ #define BTN_ENC E3_EXP1_09_PIN
+ #define LCD_PINS_RS E3_EXP1_04_PIN
- #define BTN_EN1 PB5
- #define BTN_EN2 PB4
+ #define BTN_EN1 E3_EXP1_08_PIN
+ #define BTN_EN2 E3_EXP1_06_PIN
- #define LCD_PINS_ENABLE PC2
+ #define LCD_PINS_ENABLE E3_EXP1_03_PIN
#if ENABLED(MKS_MINI_12864)
#define LCD_BACKLIGHT_PIN -1
#define LCD_RESET_PIN -1
- #define DOGLCD_A0 PC1
- #define DOGLCD_CS PC2
+ #define DOGLCD_A0 E3_EXP1_05_PIN
+ #define DOGLCD_CS E3_EXP1_03_PIN
#define DOGLCD_SCK PB13
#define DOGLCD_MOSI PB15
#else // !MKS_MINI_12864
- #define LCD_PINS_D4 PC1
+ #define LCD_PINS_D4 E3_EXP1_05_PIN
#if IS_ULTIPANEL
#define LCD_PINS_D5 -1
#define LCD_PINS_D6 -1
@@ -141,3 +161,15 @@
#define SD_MISO_PIN PB14
#define SD_MOSI_PIN PB15
#define SD_SS_PIN PA15
+
+// EXP1 replace LCD with keys for EasyThreeD ET4000+ Mainboard
+#if ENABLED(EASYTHREED_UI)
+ #define BTN_HOME E3_EXP1_04_PIN // INPUT_PULLUP (unused)
+ #define BTN_FEED E3_EXP1_09_PIN // Run E Forward
+ #define BTN_RETRACT E3_EXP1_08_PIN // Run E Backward
+ #define BTN_PRINT E3_EXP1_07_PIN // Start File Print
+ #define BTN_HOME_GND E3_EXP1_03_PIN // OUTPUT (LOW)
+ #define BTN_FEED_GND E3_EXP1_06_PIN // OUTPUT (LOW)
+ #define BTN_RETRACT_GND E3_EXP1_05_PIN // OUTPUT (LOW)
+ #define EASYTHREED_LED_PIN E3_EXP1_10_PIN // Indicator LED
+#endif
diff --git a/ini/features.ini b/ini/features.ini
index bd8b748d6c..b56565b154 100644
--- a/ini/features.ini
+++ b/ini/features.ini
@@ -112,6 +112,7 @@ HAS_COOLER|LASER_COOLANT_FLOW_METER = src_filter=+
HAS_MOTOR_CURRENT_DAC = src_filter=+
DIRECT_STEPPING = src_filter=+ +
EMERGENCY_PARSER = src_filter=+ -
+EASYTHREED_UI = src_filter=+
I2C_POSITION_ENCODERS = src_filter=+
IIC_BL24CXX_EEPROM = src_filter=+
HAS_SPI_FLASH = src_filter=+
diff --git a/platformio.ini b/platformio.ini
index ce148ce082..1b4effcf25 100644
--- a/platformio.ini
+++ b/platformio.ini
@@ -110,6 +110,7 @@ default_src_filter = + - - +
- -
- -
-
+ -
-
- -
-