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+/**
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+ * Marlin 3D Printer Firmware
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+ * Copyright (c) 2021 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
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+ *
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+ * Based on Sprinter and grbl.
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+ * Copyright (c) 2011 Camiel Gubbels / Erik van der Zalm
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+ *
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+ * This program is free software: you can redistribute it and/or modify
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+ * it under the terms of the GNU General Public License as published by
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+ * the Free Software Foundation, either version 3 of the License, or
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+ * (at your option) any later version.
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+ *
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+ * This program is distributed in the hope that it will be useful,
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+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
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+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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+ * GNU General Public License for more details.
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+ *
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+ * You should have received a copy of the GNU General Public License
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+ * along with this program. If not, see <https://www.gnu.org/licenses/>.
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+ *
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+ */
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+
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+#include "../inc/MarlinConfigPre.h"
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+
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+#if ENABLED(EASYTHREED_UI)
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+
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+#include "easythreed_ui.h"
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+#include "pause.h"
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+#include "../module/temperature.h"
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+#include "../module/printcounter.h"
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+#include "../sd/cardreader.h"
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+#include "../gcode/queue.h"
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+#include "../module/motion.h"
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+#include "../module/planner.h"
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+#include "../MarlinCore.h"
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+
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+EasythreedUI easythreed_ui;
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+
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+#define BTN_DEBOUNCE_MS 20
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+
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+void EasythreedUI::init() {
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+ SET_INPUT_PULLUP(BTN_HOME); SET_OUTPUT(BTN_HOME_GND);
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+ SET_INPUT_PULLUP(BTN_FEED); SET_OUTPUT(BTN_FEED_GND);
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+ SET_INPUT_PULLUP(BTN_RETRACT); SET_OUTPUT(BTN_RETRACT_GND);
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+ SET_INPUT_PULLUP(BTN_PRINT);
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+ SET_OUTPUT(EASYTHREED_LED_PIN);
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+}
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+
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+void EasythreedUI::run() {
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+ blinkLED();
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+ loadButton();
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+ printButton();
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+}
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+
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+enum LEDInterval : uint16_t {
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+ LED_OFF = 0,
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+ LED_ON = 4000,
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+ LED_BLINK_0 = 2500,
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+ LED_BLINK_1 = 1500,
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+ LED_BLINK_2 = 1000,
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+ LED_BLINK_3 = 800,
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+ LED_BLINK_4 = 500,
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+ LED_BLINK_5 = 300,
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+ LED_BLINK_6 = 150,
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+ LED_BLINK_7 = 50
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+};
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+
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+uint16_t blink_interval_ms = LED_ON; // Status LED on Start button
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+
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+void EasythreedUI::blinkLED() {
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+ static millis_t prev_blink_interval_ms = 0, blink_start_ms = 0;
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+
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+ if (blink_interval_ms == LED_OFF) { WRITE(EASYTHREED_LED_PIN, HIGH); return; } // OFF
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+ if (blink_interval_ms >= LED_ON) { WRITE(EASYTHREED_LED_PIN, LOW); return; } // ON
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+
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+ const millis_t ms = millis();
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+ if (prev_blink_interval_ms != blink_interval_ms) {
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+ prev_blink_interval_ms = blink_interval_ms;
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+ blink_start_ms = ms;
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+ }
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+ if (PENDING(ms, blink_start_ms + blink_interval_ms))
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+ WRITE(EASYTHREED_LED_PIN, LOW);
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+ else if (PENDING(ms, blink_start_ms + 2 * blink_interval_ms))
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+ WRITE(EASYTHREED_LED_PIN, HIGH);
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+ else
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+ blink_start_ms = ms;
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+}
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+
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+//
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+// Filament Load/Unload Button
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+// Load/Unload buttons are a 3 position switch with a common center ground.
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+//
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+void EasythreedUI::loadButton() {
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+ if (printingIsActive()) return;
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+
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+ enum FilamentStatus : uint8_t { FS_IDLE, FS_PRESS, FS_CHECK, FS_PROCEED };
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+ static uint8_t filament_status = FS_IDLE;
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+ static millis_t filament_time = 0;
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+
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+ switch (filament_status) {
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+
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+ case FS_IDLE:
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+ if (!READ(BTN_RETRACT) || !READ(BTN_FEED)) { // If feed/retract switch is toggled...
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+ filament_status++; // ...proceed to next test.
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+ filament_time = millis();
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+ }
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+ break;
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+
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+ case FS_PRESS:
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+ if (ELAPSED(millis(), filament_time + BTN_DEBOUNCE_MS)) { // After a short debounce delay...
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+ if (!READ(BTN_RETRACT) || !READ(BTN_FEED)) { // ...if switch still toggled...
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+ thermalManager.setTargetHotend(EXTRUDE_MINTEMP + 10, 0); // Start heating up
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+ blink_interval_ms = LED_BLINK_7; // Set the LED to blink fast
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+ filament_status++;
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+ }
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+ else
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+ filament_status = FS_IDLE; // Switch not toggled long enough
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+ }
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+ break;
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+
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+ case FS_CHECK:
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+ if (READ(BTN_RETRACT) && READ(BTN_FEED)) { // Switch in center position (stop)
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+ blink_interval_ms = LED_ON; // LED on steady
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+ filament_status = FS_IDLE;
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+ thermalManager.disable_all_heaters();
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+ }
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+ else if (thermalManager.hotEnoughToExtrude(0)) { // Is the hotend hot enough to move material?
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+ filament_status++; // Proceed to feed / retract.
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+ blink_interval_ms = LED_BLINK_5; // Blink ~3 times per second
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+ }
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+ break;
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+
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+ case FS_PROCEED: {
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+ // Feed or Retract just once. Hard abort all moves and return to idle on swicth release.
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+ static bool flag = false;
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+ if (READ(BTN_RETRACT) && READ(BTN_FEED)) { // Switch in center position (stop)
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+ flag = false; // Restore flag to false
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+ filament_status = FS_IDLE; // Go back to idle state
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+ quickstop_stepper(); // Hard-stop all the steppers ... now!
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+ thermalManager.disable_all_heaters(); // And disable all the heaters
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+ blink_interval_ms = LED_ON;
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+ }
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+ else if (!flag) {
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+ flag = true;
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+ queue.inject(!READ(BTN_RETRACT) ? F("G91\nG0 E10 F180\nG0 E-120 F180\nM104 S0") : F("G91\nG0 E100 F120\nM104 S0"));
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+ }
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+ } break;
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+ }
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+
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+}
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+
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+#if HAS_STEPPER_RESET
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+ void disableStepperDrivers();
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+#endif
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+
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+//
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+// Print Start/Pause/Resume Button
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+//
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+void EasythreedUI::printButton() {
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+ enum KeyStatus : uint8_t { KS_IDLE, KS_PRESS, KS_PROCEED };
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+ static uint8_t key_status = KS_IDLE;
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+ static millis_t key_time = 0;
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+
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+ enum PrintFlag : uint8_t { PF_START, PF_PAUSE, PF_RESUME };
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+ static PrintFlag print_key_flag = PF_START;
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+
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+ const millis_t ms = millis();
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+
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+ switch (key_status) {
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+ case KS_IDLE:
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+ if (!READ(BTN_PRINT)) { // Print/Pause/Resume button pressed?
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+ key_time = ms; // Save start time
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+ key_status++; // Go to debounce test
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+ }
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+ break;
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+
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+ case KS_PRESS:
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+ if (ELAPSED(ms, key_time + BTN_DEBOUNCE_MS)) // Wait for debounce interval to expire
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+ key_status = READ(BTN_PRINT) ? KS_IDLE : KS_PROCEED; // Proceed if still pressed
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+ break;
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+
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+ case KS_PROCEED:
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+ if (!READ(BTN_PRINT)) break; // Wait for the button to be released
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+ key_status = KS_IDLE; // Ready for the next press
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+ if (PENDING(ms, key_time + 1200 - BTN_DEBOUNCE_MS)) { // Register a press < 1.2 seconds
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+ switch (print_key_flag) {
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+ case PF_START: { // The "Print" button starts an SD card print
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+ if (printingIsActive()) break; // Already printing? (find another line that checks for 'is planner doing anything else right now?')
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+ blink_interval_ms = LED_BLINK_2; // Blink the indicator LED at 1 second intervals
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+ print_key_flag = PF_PAUSE; // The "Print" button now pauses the print
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+ card.mount(); // Force SD card to mount - now!
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+ if (!card.isMounted) { // Failed to mount?
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+ blink_interval_ms = LED_OFF; // Turn off LED
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+ print_key_flag = PF_START;
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+ return; // Bail out
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+ }
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+ card.ls(); // List all files to serial output
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+ const uint16_t filecnt = card.countFilesInWorkDir(); // Count printable files in cwd
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+ if (filecnt == 0) return; // None are printable?
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+ card.selectFileByIndex(filecnt); // Select the last file according to current sort options
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+ card.openAndPrintFile(card.filename); // Start printing it
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+ break;
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+ }
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+ case PF_PAUSE: { // Pause printing (not currently firing)
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+ if (!printingIsActive()) break;
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+ blink_interval_ms = LED_ON; // Set indicator to steady ON
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+ queue.inject(F("M25")); // Queue Pause
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+ print_key_flag = PF_RESUME; // The "Print" button now resumes the print
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+ break;
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+ }
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+ case PF_RESUME: { // Resume printing
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+ if (printingIsActive()) break;
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+ blink_interval_ms = LED_BLINK_2; // Blink the indicator LED at 1 second intervals
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+ queue.inject(F("M24")); // Queue resume
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+ print_key_flag = PF_PAUSE; // The "Print" button now pauses the print
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+ break;
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+ }
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+ }
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+ }
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+ else { // Register a longer press
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+ if (print_key_flag == PF_START && !printingIsActive()) { // While not printing, this moves Z up 10mm
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+ blink_interval_ms = LED_ON;
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+ queue.inject(F("G91\nG0 Z10 F600\nG90")); // Raise Z soon after returning to main loop
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+ }
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+ else { // While printing, cancel print
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+ card.abortFilePrintSoon(); // There is a delay while the current steps play out
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+ blink_interval_ms = LED_OFF; // Turn off LED
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+ }
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+ planner.synchronize(); // Wait for commands already in the planner to finish
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+ TERN_(HAS_STEPPER_RESET, disableStepperDrivers()); // Disable all steppers - now!
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+ print_key_flag = PF_START; // The "Print" button now starts a new print
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+ }
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+ break;
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+ }
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+}
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+#endif // EASYTHREED_UI
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schmttc