From e8701195e66f2d27ffe17fb514eae8173795aaf7 Mon Sep 17 00:00:00 2001
From: Georgiy Bondarenko <69736697+nehilo@users.noreply.github.com>
Date: Thu, 4 Mar 2021 22:54:23 +0500
Subject: Initial commit
---
Marlin/src/HAL/ESP32/FlushableHardwareSerial.cpp | 30 ++
Marlin/src/HAL/ESP32/FlushableHardwareSerial.h | 36 +++
Marlin/src/HAL/ESP32/HAL.cpp | 278 ++++++++++++++++++
Marlin/src/HAL/ESP32/HAL.h | 184 ++++++++++++
Marlin/src/HAL/ESP32/HAL_SPI.cpp | 115 ++++++++
Marlin/src/HAL/ESP32/Servo.cpp | 69 +++++
Marlin/src/HAL/ESP32/Servo.h | 49 ++++
Marlin/src/HAL/ESP32/Tone.cpp | 59 ++++
Marlin/src/HAL/ESP32/WebSocketSerial.cpp | 148 ++++++++++
Marlin/src/HAL/ESP32/WebSocketSerial.h | 85 ++++++
Marlin/src/HAL/ESP32/eeprom.cpp | 57 ++++
Marlin/src/HAL/ESP32/endstop_interrupts.h | 62 ++++
Marlin/src/HAL/ESP32/fastio.h | 87 ++++++
Marlin/src/HAL/ESP32/i2s.cpp | 343 +++++++++++++++++++++++
Marlin/src/HAL/ESP32/i2s.h | 35 +++
Marlin/src/HAL/ESP32/inc/Conditionals_LCD.h | 26 ++
Marlin/src/HAL/ESP32/inc/Conditionals_adv.h | 22 ++
Marlin/src/HAL/ESP32/inc/Conditionals_post.h | 22 ++
Marlin/src/HAL/ESP32/inc/SanityCheck.h | 38 +++
Marlin/src/HAL/ESP32/ota.cpp | 72 +++++
Marlin/src/HAL/ESP32/ota.h | 23 ++
Marlin/src/HAL/ESP32/servotimers.h | 22 ++
Marlin/src/HAL/ESP32/spi_pins.h | 24 ++
Marlin/src/HAL/ESP32/spiffs.cpp | 43 +++
Marlin/src/HAL/ESP32/spiffs.h | 26 ++
Marlin/src/HAL/ESP32/timers.cpp | 171 +++++++++++
Marlin/src/HAL/ESP32/timers.h | 140 +++++++++
Marlin/src/HAL/ESP32/watchdog.cpp | 42 +++
Marlin/src/HAL/ESP32/watchdog.h | 38 +++
Marlin/src/HAL/ESP32/web.cpp | 47 ++++
Marlin/src/HAL/ESP32/web.h | 24 ++
Marlin/src/HAL/ESP32/wifi.cpp | 66 +++++
Marlin/src/HAL/ESP32/wifi.h | 30 ++
33 files changed, 2513 insertions(+)
create mode 100644 Marlin/src/HAL/ESP32/FlushableHardwareSerial.cpp
create mode 100644 Marlin/src/HAL/ESP32/FlushableHardwareSerial.h
create mode 100644 Marlin/src/HAL/ESP32/HAL.cpp
create mode 100644 Marlin/src/HAL/ESP32/HAL.h
create mode 100644 Marlin/src/HAL/ESP32/HAL_SPI.cpp
create mode 100644 Marlin/src/HAL/ESP32/Servo.cpp
create mode 100644 Marlin/src/HAL/ESP32/Servo.h
create mode 100644 Marlin/src/HAL/ESP32/Tone.cpp
create mode 100644 Marlin/src/HAL/ESP32/WebSocketSerial.cpp
create mode 100644 Marlin/src/HAL/ESP32/WebSocketSerial.h
create mode 100644 Marlin/src/HAL/ESP32/eeprom.cpp
create mode 100644 Marlin/src/HAL/ESP32/endstop_interrupts.h
create mode 100644 Marlin/src/HAL/ESP32/fastio.h
create mode 100644 Marlin/src/HAL/ESP32/i2s.cpp
create mode 100644 Marlin/src/HAL/ESP32/i2s.h
create mode 100644 Marlin/src/HAL/ESP32/inc/Conditionals_LCD.h
create mode 100644 Marlin/src/HAL/ESP32/inc/Conditionals_adv.h
create mode 100644 Marlin/src/HAL/ESP32/inc/Conditionals_post.h
create mode 100644 Marlin/src/HAL/ESP32/inc/SanityCheck.h
create mode 100644 Marlin/src/HAL/ESP32/ota.cpp
create mode 100644 Marlin/src/HAL/ESP32/ota.h
create mode 100644 Marlin/src/HAL/ESP32/servotimers.h
create mode 100644 Marlin/src/HAL/ESP32/spi_pins.h
create mode 100644 Marlin/src/HAL/ESP32/spiffs.cpp
create mode 100644 Marlin/src/HAL/ESP32/spiffs.h
create mode 100644 Marlin/src/HAL/ESP32/timers.cpp
create mode 100644 Marlin/src/HAL/ESP32/timers.h
create mode 100644 Marlin/src/HAL/ESP32/watchdog.cpp
create mode 100644 Marlin/src/HAL/ESP32/watchdog.h
create mode 100644 Marlin/src/HAL/ESP32/web.cpp
create mode 100644 Marlin/src/HAL/ESP32/web.h
create mode 100644 Marlin/src/HAL/ESP32/wifi.cpp
create mode 100644 Marlin/src/HAL/ESP32/wifi.h
(limited to 'Marlin/src/HAL/ESP32')
diff --git a/Marlin/src/HAL/ESP32/FlushableHardwareSerial.cpp b/Marlin/src/HAL/ESP32/FlushableHardwareSerial.cpp
new file mode 100644
index 0000000..cc5a4fc
--- /dev/null
+++ b/Marlin/src/HAL/ESP32/FlushableHardwareSerial.cpp
@@ -0,0 +1,30 @@
+/**
+ * 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 .
+ *
+ */
+
+#include "FlushableHardwareSerial.h"
+
+#ifdef ARDUINO_ARCH_ESP32
+
+
+Serial0Type flushableSerial(false, 0);
+
+#endif // ARDUINO_ARCH_ESP32
diff --git a/Marlin/src/HAL/ESP32/FlushableHardwareSerial.h b/Marlin/src/HAL/ESP32/FlushableHardwareSerial.h
new file mode 100644
index 0000000..27df0be
--- /dev/null
+++ b/Marlin/src/HAL/ESP32/FlushableHardwareSerial.h
@@ -0,0 +1,36 @@
+/**
+ * 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 .
+ *
+ */
+#pragma once
+
+#ifdef ARDUINO_ARCH_ESP32
+
+#include
+#include "../../core/serial_hook.h"
+
+class FlushableHardwareSerial : public HardwareSerial {
+public:
+ FlushableHardwareSerial(int uart_nr) : HardwareSerial(uart_nr) {}
+};
+
+extern Serial0Type flushableSerial;
+
+#endif // ARDUINO_ARCH_ESP32
diff --git a/Marlin/src/HAL/ESP32/HAL.cpp b/Marlin/src/HAL/ESP32/HAL.cpp
new file mode 100644
index 0000000..6ff1446
--- /dev/null
+++ b/Marlin/src/HAL/ESP32/HAL.cpp
@@ -0,0 +1,278 @@
+/**
+ * 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 .
+ *
+ */
+#ifdef ARDUINO_ARCH_ESP32
+
+#include "../../inc/MarlinConfig.h"
+
+#include
+#include
+#include
+#include
+
+#if ENABLED(WIFISUPPORT)
+ #include
+ #include "wifi.h"
+ #if ENABLED(OTASUPPORT)
+ #include "ota.h"
+ #endif
+ #if ENABLED(WEBSUPPORT)
+ #include "spiffs.h"
+ #include "web.h"
+ #endif
+#endif
+
+#if ENABLED(ESP3D_WIFISUPPORT)
+ DefaultSerial MSerial(false, Serial2Socket);
+#endif
+
+// ------------------------
+// Externs
+// ------------------------
+
+portMUX_TYPE spinlock = portMUX_INITIALIZER_UNLOCKED;
+
+// ------------------------
+// Local defines
+// ------------------------
+
+#define V_REF 1100
+
+// ------------------------
+// Public Variables
+// ------------------------
+
+uint16_t HAL_adc_result;
+
+// ------------------------
+// Private Variables
+// ------------------------
+
+esp_adc_cal_characteristics_t characteristics[ADC_ATTEN_MAX];
+adc_atten_t attenuations[ADC1_CHANNEL_MAX] = {};
+uint32_t thresholds[ADC_ATTEN_MAX];
+volatile int numPWMUsed = 0,
+ pwmPins[MAX_PWM_PINS],
+ pwmValues[MAX_PWM_PINS];
+
+// ------------------------
+// Public functions
+// ------------------------
+
+#if ENABLED(WIFI_CUSTOM_COMMAND)
+
+ bool wifi_custom_command(char * const command_ptr) {
+ #if ENABLED(ESP3D_WIFISUPPORT)
+ return esp3dlib.parse(command_ptr);
+ #else
+ UNUSED(command_ptr);
+ return false;
+ #endif
+ }
+
+#endif
+
+void HAL_init() { TERN_(I2S_STEPPER_STREAM, i2s_init()); }
+
+void HAL_init_board() {
+
+ #if ENABLED(ESP3D_WIFISUPPORT)
+ esp3dlib.init();
+ #elif ENABLED(WIFISUPPORT)
+ wifi_init();
+ TERN_(OTASUPPORT, OTA_init());
+ #if ENABLED(WEBSUPPORT)
+ spiffs_init();
+ web_init();
+ #endif
+ server.begin();
+ #endif
+
+ // ESP32 uses a GPIO matrix that allows pins to be assigned to hardware serial ports.
+ // The following code initializes hardware Serial1 and Serial2 to use user-defined pins
+ // if they have been defined.
+ #if defined(HARDWARE_SERIAL1_RX) && defined(HARDWARE_SERIAL1_TX)
+ HardwareSerial Serial1(1);
+ #ifdef TMC_BAUD_RATE // use TMC_BAUD_RATE for Serial1 if defined
+ Serial1.begin(TMC_BAUD_RATE, SERIAL_8N1, HARDWARE_SERIAL1_RX, HARDWARE_SERIAL1_TX);
+ #else // use default BAUDRATE if TMC_BAUD_RATE not defined
+ Serial1.begin(BAUDRATE, SERIAL_8N1, HARDWARE_SERIAL1_RX, HARDWARE_SERIAL1_TX);
+ #endif
+ #endif
+ #if defined(HARDWARE_SERIAL2_RX) && defined(HARDWARE_SERIAL2_TX)
+ HardwareSerial Serial2(2);
+ #ifdef TMC_BAUD_RATE // use TMC_BAUD_RATE for Serial1 if defined
+ Serial2.begin(TMC_BAUD_RATE, SERIAL_8N1, HARDWARE_SERIAL2_RX, HARDWARE_SERIAL2_TX);
+ #else // use default BAUDRATE if TMC_BAUD_RATE not defined
+ Serial2.begin(BAUDRATE, SERIAL_8N1, HARDWARE_SERIAL2_RX, HARDWARE_SERIAL2_TX);
+ #endif
+ #endif
+
+}
+
+void HAL_idletask() {
+ #if BOTH(WIFISUPPORT, OTASUPPORT)
+ OTA_handle();
+ #endif
+ TERN_(ESP3D_WIFISUPPORT, esp3dlib.idletask());
+}
+
+void HAL_clear_reset_source() { }
+
+uint8_t HAL_get_reset_source() { return rtc_get_reset_reason(1); }
+
+void _delay_ms(int delay_ms) { delay(delay_ms); }
+
+// return free memory between end of heap (or end bss) and whatever is current
+int freeMemory() { return ESP.getFreeHeap(); }
+
+// ------------------------
+// ADC
+// ------------------------
+#define ADC1_CHANNEL(pin) ADC1_GPIO ## pin ## _CHANNEL
+
+adc1_channel_t get_channel(int pin) {
+ switch (pin) {
+ case 39: return ADC1_CHANNEL(39);
+ case 36: return ADC1_CHANNEL(36);
+ case 35: return ADC1_CHANNEL(35);
+ case 34: return ADC1_CHANNEL(34);
+ case 33: return ADC1_CHANNEL(33);
+ case 32: return ADC1_CHANNEL(32);
+ }
+ return ADC1_CHANNEL_MAX;
+}
+
+void adc1_set_attenuation(adc1_channel_t chan, adc_atten_t atten) {
+ if (attenuations[chan] != atten) {
+ adc1_config_channel_atten(chan, atten);
+ attenuations[chan] = atten;
+ }
+}
+
+void HAL_adc_init() {
+ // Configure ADC
+ adc1_config_width(ADC_WIDTH_12Bit);
+
+ // Configure channels only if used as (re-)configuring a pin for ADC that is used elsewhere might have adverse effects
+ TERN_(HAS_TEMP_ADC_0, adc1_set_attenuation(get_channel(TEMP_0_PIN), ADC_ATTEN_11db));
+ TERN_(HAS_TEMP_ADC_1, adc1_set_attenuation(get_channel(TEMP_1_PIN), ADC_ATTEN_11db));
+ TERN_(HAS_TEMP_ADC_2, adc1_set_attenuation(get_channel(TEMP_2_PIN), ADC_ATTEN_11db));
+ TERN_(HAS_TEMP_ADC_3, adc1_set_attenuation(get_channel(TEMP_3_PIN), ADC_ATTEN_11db));
+ TERN_(HAS_TEMP_ADC_4, adc1_set_attenuation(get_channel(TEMP_4_PIN), ADC_ATTEN_11db));
+ TERN_(HAS_TEMP_ADC_5, adc1_set_attenuation(get_channel(TEMP_5_PIN), ADC_ATTEN_11db));
+ TERN_(HAS_TEMP_ADC_6, adc2_set_attenuation(get_channel(TEMP_6_PIN), ADC_ATTEN_11db));
+ TERN_(HAS_TEMP_ADC_7, adc3_set_attenuation(get_channel(TEMP_7_PIN), ADC_ATTEN_11db));
+ TERN_(HAS_HEATED_BED, adc1_set_attenuation(get_channel(TEMP_BED_PIN), ADC_ATTEN_11db));
+ TERN_(HAS_TEMP_CHAMBER, adc1_set_attenuation(get_channel(TEMP_CHAMBER_PIN), ADC_ATTEN_11db));
+ TERN_(FILAMENT_WIDTH_SENSOR, adc1_set_attenuation(get_channel(FILWIDTH_PIN), ADC_ATTEN_11db));
+
+ // Note that adc2 is shared with the WiFi module, which has higher priority, so the conversion may fail.
+ // That's why we're not setting it up here.
+
+ // Calculate ADC characteristics (i.e., gain and offset factors for each attenuation level)
+ for (int i = 0; i < ADC_ATTEN_MAX; i++) {
+ esp_adc_cal_characterize(ADC_UNIT_1, (adc_atten_t)i, ADC_WIDTH_BIT_12, V_REF, &characteristics[i]);
+
+ // Change attenuation 100mV below the calibrated threshold
+ thresholds[i] = esp_adc_cal_raw_to_voltage(4095, &characteristics[i]);
+ }
+}
+
+void HAL_adc_start_conversion(const uint8_t adc_pin) {
+ const adc1_channel_t chan = get_channel(adc_pin);
+ uint32_t mv;
+ esp_adc_cal_get_voltage((adc_channel_t)chan, &characteristics[attenuations[chan]], &mv);
+ HAL_adc_result = mv * 1023.0 / 3300.0;
+
+ // Change the attenuation level based on the new reading
+ adc_atten_t atten;
+ if (mv < thresholds[ADC_ATTEN_DB_0] - 100)
+ atten = ADC_ATTEN_DB_0;
+ else if (mv > thresholds[ADC_ATTEN_DB_0] - 50 && mv < thresholds[ADC_ATTEN_DB_2_5] - 100)
+ atten = ADC_ATTEN_DB_2_5;
+ else if (mv > thresholds[ADC_ATTEN_DB_2_5] - 50 && mv < thresholds[ADC_ATTEN_DB_6] - 100)
+ atten = ADC_ATTEN_DB_6;
+ else if (mv > thresholds[ADC_ATTEN_DB_6] - 50)
+ atten = ADC_ATTEN_DB_11;
+ else return;
+
+ adc1_set_attenuation(chan, atten);
+}
+
+void analogWrite(pin_t pin, int value) {
+ // Use ledc hardware for internal pins
+ if (pin < 34) {
+ static int cnt_channel = 1, pin_to_channel[40] = { 0 };
+ if (pin_to_channel[pin] == 0) {
+ ledcAttachPin(pin, cnt_channel);
+ ledcSetup(cnt_channel, 490, 8);
+ ledcWrite(cnt_channel, value);
+ pin_to_channel[pin] = cnt_channel++;
+ }
+ ledcWrite(pin_to_channel[pin], value);
+ return;
+ }
+
+ int idx = -1;
+
+ // Search Pin
+ for (int i = 0; i < numPWMUsed; ++i)
+ if (pwmPins[i] == pin) { idx = i; break; }
+
+ // not found ?
+ if (idx < 0) {
+ // No slots remaining
+ if (numPWMUsed >= MAX_PWM_PINS) return;
+
+ // Take new slot for pin
+ idx = numPWMUsed;
+ pwmPins[idx] = pin;
+ // Start timer on first use
+ if (idx == 0) HAL_timer_start(PWM_TIMER_NUM, PWM_TIMER_FREQUENCY);
+
+ ++numPWMUsed;
+ }
+
+ // Use 7bit internal value - add 1 to have 100% high at 255
+ pwmValues[idx] = (value + 1) / 2;
+}
+
+// Handle PWM timer interrupt
+HAL_PWM_TIMER_ISR() {
+ HAL_timer_isr_prologue(PWM_TIMER_NUM);
+
+ static uint8_t count = 0;
+
+ for (int i = 0; i < numPWMUsed; ++i) {
+ if (count == 0) // Start of interval
+ WRITE(pwmPins[i], pwmValues[i] ? HIGH : LOW);
+ else if (pwmValues[i] == count) // End of duration
+ WRITE(pwmPins[i], LOW);
+ }
+
+ // 128 for 7 Bit resolution
+ count = (count + 1) & 0x7F;
+
+ HAL_timer_isr_epilogue(PWM_TIMER_NUM);
+}
+
+#endif // ARDUINO_ARCH_ESP32
diff --git a/Marlin/src/HAL/ESP32/HAL.h b/Marlin/src/HAL/ESP32/HAL.h
new file mode 100644
index 0000000..3dc27c6
--- /dev/null
+++ b/Marlin/src/HAL/ESP32/HAL.h
@@ -0,0 +1,184 @@
+/**
+ * Marlin 3D Printer Firmware
+ * Copyright (c) 2020 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
+ * Copyright (c) 2016 Bob Cousins bobcousins42@googlemail.com
+ *
+ * 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
+
+/**
+ * HAL for Espressif ESP32 WiFi
+ */
+
+#define CPU_32_BIT
+
+#include
+
+#include "../shared/Marduino.h"
+#include "../shared/math_32bit.h"
+#include "../shared/HAL_SPI.h"
+
+#include "fastio.h"
+#include "watchdog.h"
+#include "i2s.h"
+
+#if ENABLED(WIFISUPPORT)
+ #include "WebSocketSerial.h"
+#endif
+
+#if ENABLED(ESP3D_WIFISUPPORT)
+ #include "esp3dlib.h"
+#endif
+
+#include "FlushableHardwareSerial.h"
+
+// ------------------------
+// Defines
+// ------------------------
+
+extern portMUX_TYPE spinlock;
+
+#define MYSERIAL0 flushableSerial
+
+#if EITHER(WIFISUPPORT, ESP3D_WIFISUPPORT)
+ #if ENABLED(ESP3D_WIFISUPPORT)
+ typedef ForwardSerial0Type< decltype(Serial2Socket) > DefaultSerial;
+ extern DefaultSerial MSerial;
+ #define MYSERIAL1 MSerial
+ #else
+ #define MYSERIAL1 webSocketSerial
+ #endif
+#endif
+
+#define CRITICAL_SECTION_START() portENTER_CRITICAL(&spinlock)
+#define CRITICAL_SECTION_END() portEXIT_CRITICAL(&spinlock)
+#define ISRS_ENABLED() (spinlock.owner == portMUX_FREE_VAL)
+#define ENABLE_ISRS() if (spinlock.owner != portMUX_FREE_VAL) portEXIT_CRITICAL(&spinlock)
+#define DISABLE_ISRS() portENTER_CRITICAL(&spinlock)
+
+// ------------------------
+// Types
+// ------------------------
+
+typedef int16_t pin_t;
+
+#define HAL_SERVO_LIB Servo
+
+// ------------------------
+// Public Variables
+// ------------------------
+
+/** result of last ADC conversion */
+extern uint16_t HAL_adc_result;
+
+// ------------------------
+// Public functions
+// ------------------------
+
+//
+// Tone
+//
+void toneInit();
+void tone(const pin_t _pin, const unsigned int frequency, const unsigned long duration=0);
+void noTone(const pin_t _pin);
+
+// clear reset reason
+void HAL_clear_reset_source();
+
+// reset reason
+uint8_t HAL_get_reset_source();
+
+inline void HAL_reboot() {} // reboot the board or restart the bootloader
+
+void _delay_ms(int delay);
+
+#if GCC_VERSION <= 50000
+ #pragma GCC diagnostic push
+ #pragma GCC diagnostic ignored "-Wunused-function"
+#endif
+
+int freeMemory();
+
+#if GCC_VERSION <= 50000
+ #pragma GCC diagnostic pop
+#endif
+
+void analogWrite(pin_t pin, int value);
+
+// ADC
+#define HAL_ANALOG_SELECT(pin)
+
+void HAL_adc_init();
+
+#define HAL_ADC_VREF 3.3
+#define HAL_ADC_RESOLUTION 10
+#define HAL_START_ADC(pin) HAL_adc_start_conversion(pin)
+#define HAL_READ_ADC() HAL_adc_result
+#define HAL_ADC_READY() true
+
+void HAL_adc_start_conversion(const uint8_t adc_pin);
+
+#define GET_PIN_MAP_PIN(index) index
+#define GET_PIN_MAP_INDEX(pin) pin
+#define PARSED_PIN_INDEX(code, dval) parser.intval(code, dval)
+
+// Enable hooks into idle and setup for HAL
+#define HAL_IDLETASK 1
+#define BOARD_INIT() HAL_init_board();
+void HAL_idletask();
+void HAL_init();
+void HAL_init_board();
+
+//
+// Delay in cycles (used by DELAY_NS / DELAY_US)
+//
+FORCE_INLINE static void DELAY_CYCLES(uint32_t x) {
+ unsigned long start, ccount, stop;
+
+ /**
+ * It's important to care for race conditions (and overflows) here.
+ * Race condition example: If `stop` calculates to being close to the upper boundary of
+ * `uint32_t` and if at the same time a longer loop interruption kicks in (e.g. due to other
+ * FreeRTOS tasks or interrupts), `ccount` might overflow (and therefore be below `stop` again)
+ * without the loop ever being able to notice that `ccount` had already been above `stop` once
+ * (and that therefore the number of cycles to delay has already passed).
+ * As DELAY_CYCLES (through DELAY_NS / DELAY_US) is used by software SPI bit banging to drive
+ * LCDs and therefore might be called very, very often, this seemingly improbable situation did
+ * actually happen in reality. It resulted in apparently random print pauses of ~17.9 seconds
+ * (0x100000000 / 240 MHz) or multiples thereof, essentially ruining the current print by causing
+ * large blobs of filament.
+ */
+
+ __asm__ __volatile__ ( "rsr %0, ccount" : "=a" (start) );
+ stop = start + x;
+ ccount = start;
+
+ if (stop >= start) {
+ // no overflow, so only loop while in between start and stop:
+ // 0x00000000 -----------------start****stop-- 0xFFFFFFFF
+ while (ccount >= start && ccount < stop) {
+ __asm__ __volatile__ ( "rsr %0, ccount" : "=a" (ccount) );
+ }
+ }
+ else {
+ // stop did overflow, so only loop while outside of stop and start:
+ // 0x00000000 **stop-------------------start** 0xFFFFFFFF
+ while (ccount >= start || ccount < stop) {
+ __asm__ __volatile__ ( "rsr %0, ccount" : "=a" (ccount) );
+ }
+ }
+
+}
diff --git a/Marlin/src/HAL/ESP32/HAL_SPI.cpp b/Marlin/src/HAL/ESP32/HAL_SPI.cpp
new file mode 100644
index 0000000..8ee837b
--- /dev/null
+++ b/Marlin/src/HAL/ESP32/HAL_SPI.cpp
@@ -0,0 +1,115 @@
+/**
+ * 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
+ * Copyright (c) 2017 Victor Perez
+ *
+ * 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 .
+ *
+ */
+#ifdef ARDUINO_ARCH_ESP32
+
+#include "../../inc/MarlinConfig.h"
+
+#include "../shared/HAL_SPI.h"
+
+#include
+#include
+
+// ------------------------
+// Public Variables
+// ------------------------
+
+static SPISettings spiConfig;
+
+// ------------------------
+// Public functions
+// ------------------------
+
+#if ENABLED(SOFTWARE_SPI)
+
+ // ------------------------
+ // Software SPI
+ // ------------------------
+ #error "Software SPI not supported for ESP32. Use Hardware SPI."
+
+#else
+
+// ------------------------
+// Hardware SPI
+// ------------------------
+
+void spiBegin() {
+ #if !PIN_EXISTS(SD_SS)
+ #error "SD_SS_PIN not defined!"
+ #endif
+
+ OUT_WRITE(SD_SS_PIN, HIGH);
+}
+
+void spiInit(uint8_t spiRate) {
+ uint32_t clock;
+
+ switch (spiRate) {
+ case SPI_FULL_SPEED: clock = 16000000; break;
+ case SPI_HALF_SPEED: clock = 8000000; break;
+ case SPI_QUARTER_SPEED: clock = 4000000; break;
+ case SPI_EIGHTH_SPEED: clock = 2000000; break;
+ case SPI_SIXTEENTH_SPEED: clock = 1000000; break;
+ case SPI_SPEED_5: clock = 500000; break;
+ case SPI_SPEED_6: clock = 250000; break;
+ default: clock = 1000000; // Default from the SPI library
+ }
+
+ spiConfig = SPISettings(clock, MSBFIRST, SPI_MODE0);
+ SPI.begin();
+}
+
+uint8_t spiRec() {
+ SPI.beginTransaction(spiConfig);
+ uint8_t returnByte = SPI.transfer(0xFF);
+ SPI.endTransaction();
+ return returnByte;
+}
+
+void spiRead(uint8_t* buf, uint16_t nbyte) {
+ SPI.beginTransaction(spiConfig);
+ SPI.transferBytes(0, buf, nbyte);
+ SPI.endTransaction();
+}
+
+void spiSend(uint8_t b) {
+ SPI.beginTransaction(spiConfig);
+ SPI.transfer(b);
+ SPI.endTransaction();
+}
+
+void spiSendBlock(uint8_t token, const uint8_t* buf) {
+ SPI.beginTransaction(spiConfig);
+ SPI.transfer(token);
+ SPI.writeBytes(const_cast(buf), 512);
+ SPI.endTransaction();
+}
+
+void spiBeginTransaction(uint32_t spiClock, uint8_t bitOrder, uint8_t dataMode) {
+ spiConfig = SPISettings(spiClock, bitOrder, dataMode);
+
+ SPI.beginTransaction(spiConfig);
+}
+
+#endif // !SOFTWARE_SPI
+
+#endif // ARDUINO_ARCH_ESP32
diff --git a/Marlin/src/HAL/ESP32/Servo.cpp b/Marlin/src/HAL/ESP32/Servo.cpp
new file mode 100644
index 0000000..fcf5848
--- /dev/null
+++ b/Marlin/src/HAL/ESP32/Servo.cpp
@@ -0,0 +1,69 @@
+/**
+ * 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 .
+ *
+ */
+#ifdef ARDUINO_ARCH_ESP32
+
+#include "../../inc/MarlinConfig.h"
+
+#if HAS_SERVOS
+
+#include "Servo.h"
+
+// Adjacent channels (0/1, 2/3 etc.) share the same timer and therefore the same frequency and resolution settings on ESP32,
+// so we only allocate servo channels up high to avoid side effects with regards to analogWrite (fans, leds, laser pwm etc.)
+int Servo::channel_next_free = 12;
+
+Servo::Servo() {
+ channel = channel_next_free++;
+}
+
+int8_t Servo::attach(const int inPin) {
+ if (channel >= CHANNEL_MAX_NUM) return -1;
+ if (inPin > 0) pin = inPin;
+
+ ledcSetup(channel, 50, 16); // channel X, 50 Hz, 16-bit depth
+ ledcAttachPin(pin, channel);
+ return true;
+}
+
+void Servo::detach() { ledcDetachPin(pin); }
+
+int Servo::read() { return degrees; }
+
+void Servo::write(int inDegrees) {
+ degrees = constrain(inDegrees, MIN_ANGLE, MAX_ANGLE);
+ int us = map(degrees, MIN_ANGLE, MAX_ANGLE, MIN_PULSE_WIDTH, MAX_PULSE_WIDTH);
+ int duty = map(us, 0, TAU_USEC, 0, MAX_COMPARE);
+ ledcWrite(channel, duty);
+}
+
+void Servo::move(const int value) {
+ constexpr uint16_t servo_delay[] = SERVO_DELAY;
+ static_assert(COUNT(servo_delay) == NUM_SERVOS, "SERVO_DELAY must be an array NUM_SERVOS long.");
+ if (attach(0) >= 0) {
+ write(value);
+ safe_delay(servo_delay[channel]);
+ TERN_(DEACTIVATE_SERVOS_AFTER_MOVE, detach());
+ }
+}
+#endif // HAS_SERVOS
+
+#endif // ARDUINO_ARCH_ESP32
diff --git a/Marlin/src/HAL/ESP32/Servo.h b/Marlin/src/HAL/ESP32/Servo.h
new file mode 100644
index 0000000..8542092
--- /dev/null
+++ b/Marlin/src/HAL/ESP32/Servo.h
@@ -0,0 +1,49 @@
+/**
+ * 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 .
+ *
+ */
+#pragma once
+
+#include
+
+class Servo {
+ static const int MIN_ANGLE = 0,
+ MAX_ANGLE = 180,
+ MIN_PULSE_WIDTH = 544, // Shortest pulse sent to a servo
+ MAX_PULSE_WIDTH = 2400, // Longest pulse sent to a servo
+ TAU_MSEC = 20,
+ TAU_USEC = (TAU_MSEC * 1000),
+ MAX_COMPARE = _BV(16) - 1, // 65535
+ CHANNEL_MAX_NUM = 16;
+
+public:
+ Servo();
+ int8_t attach(const int pin); // attach the given pin to the next free channel, set pinMode, return channel number (-1 on fail)
+ void detach();
+ void write(int degrees); // set angle
+ void move(const int degrees); // attach the servo, then move to value
+ int read(); // returns current pulse width as an angle between 0 and 180 degrees
+
+private:
+ static int channel_next_free;
+ int channel;
+ int pin;
+ int degrees;
+};
diff --git a/Marlin/src/HAL/ESP32/Tone.cpp b/Marlin/src/HAL/ESP32/Tone.cpp
new file mode 100644
index 0000000..376c0f3
--- /dev/null
+++ b/Marlin/src/HAL/ESP32/Tone.cpp
@@ -0,0 +1,59 @@
+/**
+ * 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
+ *
+ * Copypaste of SAMD51 HAL developed by Giuliano Zaro (AKA GMagician)
+ *
+ * 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 .
+ *
+ */
+
+/**
+ * Description: Tone function for ESP32
+ * Derived from https://forum.arduino.cc/index.php?topic=136500.msg2903012#msg2903012
+ */
+
+#ifdef ARDUINO_ARCH_ESP32
+
+#include "../../inc/MarlinConfig.h"
+#include "HAL.h"
+
+static pin_t tone_pin;
+volatile static int32_t toggles;
+
+void tone(const pin_t _pin, const unsigned int frequency, const unsigned long duration) {
+ tone_pin = _pin;
+ toggles = 2 * frequency * duration / 1000;
+ HAL_timer_start(TONE_TIMER_NUM, 2 * frequency);
+}
+
+void noTone(const pin_t _pin) {
+ HAL_timer_disable_interrupt(TONE_TIMER_NUM);
+ WRITE(_pin, LOW);
+}
+
+HAL_TONE_TIMER_ISR() {
+ HAL_timer_isr_prologue(TONE_TIMER_NUM);
+
+ if (toggles) {
+ toggles--;
+ TOGGLE(tone_pin);
+ }
+ else noTone(tone_pin); // turn off interrupt
+}
+
+#endif // ARDUINO_ARCH_ESP32
diff --git a/Marlin/src/HAL/ESP32/WebSocketSerial.cpp b/Marlin/src/HAL/ESP32/WebSocketSerial.cpp
new file mode 100644
index 0000000..8825742
--- /dev/null
+++ b/Marlin/src/HAL/ESP32/WebSocketSerial.cpp
@@ -0,0 +1,148 @@
+/**
+ * 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 .
+ *
+ */
+#ifdef ARDUINO_ARCH_ESP32
+
+#include "../../inc/MarlinConfigPre.h"
+
+#if ENABLED(WIFISUPPORT)
+
+#include "WebSocketSerial.h"
+#include "wifi.h"
+#include
+
+MSerialT webSocketSerial(false);
+AsyncWebSocket ws("/ws"); // TODO Move inside the class.
+
+// RingBuffer impl
+
+#define NEXT_INDEX(I, SIZE) ((I + 1) & (ring_buffer_pos_t)(SIZE - 1))
+
+RingBuffer::RingBuffer(ring_buffer_pos_t size)
+ : data(new uint8_t[size]),
+ size(size),
+ read_index(0),
+ write_index(0)
+{}
+
+RingBuffer::~RingBuffer() { delete[] data; }
+
+ring_buffer_pos_t RingBuffer::write(const uint8_t c) {
+ const ring_buffer_pos_t n = NEXT_INDEX(write_index, size);
+
+ if (n != read_index) {
+ this->data[write_index] = c;
+ write_index = n;
+ return 1;
+ }
+
+ // TODO: buffer is full, handle?
+ return 0;
+}
+
+ring_buffer_pos_t RingBuffer::write(const uint8_t *buffer, ring_buffer_pos_t size) {
+ ring_buffer_pos_t written = 0;
+ for (ring_buffer_pos_t i = 0; i < size; i++) {
+ written += write(buffer[i]);
+ }
+ return written;
+}
+
+int RingBuffer::available() {
+ return (size - read_index + write_index) & (size - 1);
+}
+
+int RingBuffer::peek() {
+ return available() ? data[read_index] : -1;
+}
+
+int RingBuffer::read() {
+ if (available()) {
+ const int ret = data[read_index];
+ read_index = NEXT_INDEX(read_index, size);
+ return ret;
+ }
+ return -1;
+}
+
+ring_buffer_pos_t RingBuffer::read(uint8_t *buffer) {
+ ring_buffer_pos_t len = available();
+
+ for (ring_buffer_pos_t i = 0; read_index != write_index; i++) {
+ buffer[i] = data[read_index];
+ read_index = NEXT_INDEX(read_index, size);
+ }
+
+ return len;
+}
+
+void RingBuffer::flush() { read_index = write_index; }
+
+// WebSocketSerial impl
+WebSocketSerial::WebSocketSerial()
+ : rx_buffer(RingBuffer(RX_BUFFER_SIZE)),
+ tx_buffer(RingBuffer(TX_BUFFER_SIZE))
+{}
+
+void WebSocketSerial::begin(const long baud_setting) {
+ ws.onEvent([this](AsyncWebSocket *server, AsyncWebSocketClient *client, AwsEventType type, void *arg, uint8_t *data, size_t len) {
+ switch (type) {
+ case WS_EVT_CONNECT: client->ping(); break; // client connected
+ case WS_EVT_DISCONNECT: // client disconnected
+ case WS_EVT_ERROR: // error was received from the other end
+ case WS_EVT_PONG: break; // pong message was received (in response to a ping request maybe)
+ case WS_EVT_DATA: { // data packet
+ AwsFrameInfo * info = (AwsFrameInfo*)arg;
+ if (info->opcode == WS_TEXT || info->message_opcode == WS_TEXT)
+ this->rx_buffer.write(data, len);
+ }
+ }
+ });
+ server.addHandler(&ws);
+}
+
+void WebSocketSerial::end() { }
+int WebSocketSerial::peek() { return rx_buffer.peek(); }
+int WebSocketSerial::read() { return rx_buffer.read(); }
+int WebSocketSerial::available() { return rx_buffer.available(); }
+void WebSocketSerial::flush() { rx_buffer.flush(); }
+
+size_t WebSocketSerial::write(const uint8_t c) {
+ size_t ret = tx_buffer.write(c);
+
+ if (ret && c == '\n') {
+ uint8_t tmp[TX_BUFFER_SIZE];
+ ring_buffer_pos_t size = tx_buffer.read(tmp);
+ ws.textAll(tmp, size);
+ }
+
+ return ret;
+}
+
+size_t WebSocketSerial::write(const uint8_t* buffer, size_t size) {
+ size_t written = 0;
+ for (size_t i = 0; i < size; i++)
+ written += write(buffer[i]);
+ return written;
+}
+
+#endif // WIFISUPPORT
+#endif // ARDUINO_ARCH_ESP32
diff --git a/Marlin/src/HAL/ESP32/WebSocketSerial.h b/Marlin/src/HAL/ESP32/WebSocketSerial.h
new file mode 100644
index 0000000..c68792c
--- /dev/null
+++ b/Marlin/src/HAL/ESP32/WebSocketSerial.h
@@ -0,0 +1,85 @@
+/**
+ * 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 .
+ *
+ */
+#pragma once
+
+#include "../../inc/MarlinConfig.h"
+#include "../../core/serial_hook.h"
+
+#include
+
+#ifndef TX_BUFFER_SIZE
+ #define TX_BUFFER_SIZE 32
+#endif
+#if ENABLED(WIFISUPPORT)
+ #ifndef RX_BUFFER_SIZE
+ #define RX_BUFFER_SIZE 128
+ #endif
+ #if TX_BUFFER_SIZE <= 0
+ #error "TX_BUFFER_SIZE is required for the WebSocket."
+ #endif
+#endif
+
+typedef uint16_t ring_buffer_pos_t;
+
+class RingBuffer {
+ uint8_t *data;
+ ring_buffer_pos_t size, read_index, write_index;
+
+public:
+ RingBuffer(ring_buffer_pos_t size);
+ ~RingBuffer();
+
+ int available();
+ int peek();
+ int read();
+ ring_buffer_pos_t read(uint8_t *buffer);
+ void flush();
+ ring_buffer_pos_t write(const uint8_t c);
+ ring_buffer_pos_t write(const uint8_t* buffer, ring_buffer_pos_t size);
+};
+
+class WebSocketSerial: public Stream {
+ RingBuffer rx_buffer;
+ RingBuffer tx_buffer;
+
+public:
+ WebSocketSerial();
+ void begin(const long);
+ void end();
+ int available();
+ int peek();
+ int read();
+ void flush();
+ size_t write(const uint8_t c);
+ size_t write(const uint8_t* buffer, size_t size);
+
+ #if ENABLED(SERIAL_STATS_DROPPED_RX)
+ FORCE_INLINE uint32_t dropped() { return 0; }
+ #endif
+
+ #if ENABLED(SERIAL_STATS_MAX_RX_QUEUED)
+ FORCE_INLINE int rxMaxEnqueued() { return 0; }
+ #endif
+};
+
+typedef Serial0Type MSerialT;
+extern MSerialT webSocketSerial;
diff --git a/Marlin/src/HAL/ESP32/eeprom.cpp b/Marlin/src/HAL/ESP32/eeprom.cpp
new file mode 100644
index 0000000..cb5f881
--- /dev/null
+++ b/Marlin/src/HAL/ESP32/eeprom.cpp
@@ -0,0 +1,57 @@
+/**
+ * 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 .
+ *
+ */
+#ifdef ARDUINO_ARCH_ESP32
+
+#include "../../inc/MarlinConfig.h"
+
+#if ENABLED(EEPROM_SETTINGS)
+
+#include "../shared/eeprom_api.h"
+#include
+
+#ifndef MARLIN_EEPROM_SIZE
+ #define MARLIN_EEPROM_SIZE 0x1000 // 4KB
+#endif
+size_t PersistentStore::capacity() { return MARLIN_EEPROM_SIZE; }
+
+bool PersistentStore::access_start() { return EEPROM.begin(MARLIN_EEPROM_SIZE); }
+bool PersistentStore::access_finish() { EEPROM.end(); return true; }
+
+bool PersistentStore::write_data(int &pos, const uint8_t *value, size_t size, uint16_t *crc) {
+ for (size_t i = 0; i < size; i++) {
+ EEPROM.write(pos++, value[i]);
+ crc16(crc, &value[i], 1);
+ }
+ return false;
+}
+
+bool PersistentStore::read_data(int &pos, uint8_t *value, size_t size, uint16_t *crc, const bool writing/*=true*/) {
+ for (size_t i = 0; i < size; i++) {
+ uint8_t c = EEPROM.read(pos++);
+ if (writing) value[i] = c;
+ crc16(crc, &c, 1);
+ }
+ return false;
+}
+
+#endif // EEPROM_SETTINGS
+#endif // ARDUINO_ARCH_ESP32
diff --git a/Marlin/src/HAL/ESP32/endstop_interrupts.h b/Marlin/src/HAL/ESP32/endstop_interrupts.h
new file mode 100644
index 0000000..743ccd9
--- /dev/null
+++ b/Marlin/src/HAL/ESP32/endstop_interrupts.h
@@ -0,0 +1,62 @@
+/**
+ * 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 .
+ *
+ */
+#pragma once
+
+/**
+ * Endstop Interrupts
+ *
+ * Without endstop interrupts the endstop pins must be polled continually in
+ * the stepper-ISR via endstops.update(), most of the time finding no change.
+ * With this feature endstops.update() is called only when we know that at
+ * least one endstop has changed state, saving valuable CPU cycles.
+ *
+ * This feature only works when all used endstop pins can generate an 'external interrupt'.
+ *
+ * Test whether pins issue interrupts on your board by flashing 'pin_interrupt_test.ino'.
+ * (Located in Marlin/buildroot/share/pin_interrupt_test/pin_interrupt_test.ino)
+ */
+
+#include "../../module/endstops.h"
+
+// One ISR for all EXT-Interrupts
+void ICACHE_RAM_ATTR endstop_ISR() { endstops.update(); }
+
+void setup_endstop_interrupts() {
+ #define _ATTACH(P) attachInterrupt(digitalPinToInterrupt(P), endstop_ISR, CHANGE)
+ TERN_(HAS_X_MAX, _ATTACH(X_MAX_PIN));
+ TERN_(HAS_X_MIN, _ATTACH(X_MIN_PIN));
+ TERN_(HAS_Y_MAX, _ATTACH(Y_MAX_PIN));
+ TERN_(HAS_Y_MIN, _ATTACH(Y_MIN_PIN));
+ TERN_(HAS_Z_MAX, _ATTACH(Z_MAX_PIN));
+ TERN_(HAS_Z_MIN, _ATTACH(Z_MIN_PIN));
+ TERN_(HAS_X2_MAX, _ATTACH(X2_MAX_PIN));
+ TERN_(HAS_X2_MIN, _ATTACH(X2_MIN_PIN));
+ TERN_(HAS_Y2_MAX, _ATTACH(Y2_MAX_PIN));
+ TERN_(HAS_Y2_MIN, _ATTACH(Y2_MIN_PIN));
+ TERN_(HAS_Z2_MAX, _ATTACH(Z2_MAX_PIN));
+ TERN_(HAS_Z2_MIN, _ATTACH(Z2_MIN_PIN));
+ TERN_(HAS_Z3_MAX, _ATTACH(Z3_MAX_PIN));
+ TERN_(HAS_Z3_MIN, _ATTACH(Z3_MIN_PIN));
+ TERN_(HAS_Z4_MAX, _ATTACH(Z4_MAX_PIN));
+ TERN_(HAS_Z4_MIN, _ATTACH(Z4_MIN_PIN));
+ TERN_(HAS_Z_MIN_PROBE_PIN, _ATTACH(Z_MIN_PROBE_PIN));
+}
diff --git a/Marlin/src/HAL/ESP32/fastio.h b/Marlin/src/HAL/ESP32/fastio.h
new file mode 100644
index 0000000..8db89dc
--- /dev/null
+++ b/Marlin/src/HAL/ESP32/fastio.h
@@ -0,0 +1,87 @@
+/**
+ * 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 .
+ *
+ */
+#pragma once
+
+#include "i2s.h"
+
+/**
+ * Utility functions
+ */
+
+// I2S expander pin mapping.
+#define IS_I2S_EXPANDER_PIN(IO) TEST(IO, 7)
+#define I2S_EXPANDER_PIN_INDEX(IO) (IO & 0x7F)
+
+// Set pin as input
+#define _SET_INPUT(IO) pinMode(IO, INPUT)
+
+// Set pin as output
+#define _SET_OUTPUT(IO) pinMode(IO, OUTPUT)
+
+// Set pin as input with pullup mode
+#define _PULLUP(IO, v) pinMode(IO, v ? INPUT_PULLUP : INPUT)
+
+// Read a pin wrapper
+#define READ(IO) (IS_I2S_EXPANDER_PIN(IO) ? i2s_state(I2S_EXPANDER_PIN_INDEX(IO)) : digitalRead(IO))
+
+// Write to a pin wrapper
+#define WRITE(IO, v) (IS_I2S_EXPANDER_PIN(IO) ? i2s_write(I2S_EXPANDER_PIN_INDEX(IO), v) : digitalWrite(IO, v))
+
+// Set pin as input wrapper
+#define SET_INPUT(IO) _SET_INPUT(IO)
+
+// Set pin as input with pullup wrapper
+#define SET_INPUT_PULLUP(IO) do{ _SET_INPUT(IO); _PULLUP(IO, HIGH); }while(0)
+
+// Set pin as input with pulldown (substitution)
+#define SET_INPUT_PULLDOWN SET_INPUT
+
+// Set pin as output wrapper
+#define SET_OUTPUT(IO) do{ _SET_OUTPUT(IO); }while(0)
+
+// Set pin as PWM
+#define SET_PWM SET_OUTPUT
+
+// Set pin as output and init
+#define OUT_WRITE(IO,V) do{ _SET_OUTPUT(IO); WRITE(IO,V); }while(0)
+
+// digitalRead/Write wrappers
+#define extDigitalRead(IO) digitalRead(IO)
+#define extDigitalWrite(IO,V) digitalWrite(IO,V)
+
+// PWM outputs
+#define PWM_PIN(P) (P < 34 || P > 127) // NOTE Pins >= 34 are input only on ESP32, so they can't be used for output.
+
+// Toggle pin value
+#define TOGGLE(IO) WRITE(IO, !READ(IO))
+
+//
+// Ports and functions
+//
+
+// UART
+#define RXD 3
+#define TXD 1
+
+// TWI (I2C)
+#define SCL 5
+#define SDA 4
diff --git a/Marlin/src/HAL/ESP32/i2s.cpp b/Marlin/src/HAL/ESP32/i2s.cpp
new file mode 100644
index 0000000..e8f3806
--- /dev/null
+++ b/Marlin/src/HAL/ESP32/i2s.cpp
@@ -0,0 +1,343 @@
+/**
+ * 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 .
+ *
+ */
+#ifdef ARDUINO_ARCH_ESP32
+
+#include "../../inc/MarlinConfigPre.h"
+
+#include "i2s.h"
+
+#include "../shared/Marduino.h"
+#include
+#include
+#include
+#include
+#include "../../module/stepper.h"
+
+#define DMA_BUF_COUNT 8 // number of DMA buffers to store data
+#define DMA_BUF_LEN 4092 // maximum size in bytes
+#define I2S_SAMPLE_SIZE 4 // 4 bytes, 32 bits per sample
+#define DMA_SAMPLE_COUNT DMA_BUF_LEN / I2S_SAMPLE_SIZE // number of samples per buffer
+
+typedef enum {
+ I2S_NUM_0 = 0x0, /*!< I2S 0*/
+ I2S_NUM_1 = 0x1, /*!< I2S 1*/
+ I2S_NUM_MAX,
+} i2s_port_t;
+
+typedef struct {
+ uint32_t **buffers;
+ uint32_t *current;
+ uint32_t rw_pos;
+ lldesc_t **desc;
+ xQueueHandle queue;
+} i2s_dma_t;
+
+static portMUX_TYPE i2s_spinlock[I2S_NUM_MAX] = {portMUX_INITIALIZER_UNLOCKED, portMUX_INITIALIZER_UNLOCKED};
+static i2s_dev_t* I2S[I2S_NUM_MAX] = {&I2S0, &I2S1};
+static i2s_dma_t dma;
+
+// output value
+uint32_t i2s_port_data = 0;
+
+#define I2S_ENTER_CRITICAL() portENTER_CRITICAL(&i2s_spinlock[i2s_num])
+#define I2S_EXIT_CRITICAL() portEXIT_CRITICAL(&i2s_spinlock[i2s_num])
+
+static inline void gpio_matrix_out_check(uint32_t gpio, uint32_t signal_idx, bool out_inv, bool oen_inv) {
+ //if pin = -1, do not need to configure
+ if (gpio != -1) {
+ PIN_FUNC_SELECT(GPIO_PIN_MUX_REG[gpio], PIN_FUNC_GPIO);
+ gpio_set_direction((gpio_num_t)gpio, (gpio_mode_t)GPIO_MODE_DEF_OUTPUT);
+ gpio_matrix_out(gpio, signal_idx, out_inv, oen_inv);
+ }
+}
+
+static esp_err_t i2s_reset_fifo(i2s_port_t i2s_num) {
+ I2S_ENTER_CRITICAL();
+ I2S[i2s_num]->conf.rx_fifo_reset = 1;
+ I2S[i2s_num]->conf.rx_fifo_reset = 0;
+ I2S[i2s_num]->conf.tx_fifo_reset = 1;
+ I2S[i2s_num]->conf.tx_fifo_reset = 0;
+ I2S_EXIT_CRITICAL();
+
+ return ESP_OK;
+}
+
+esp_err_t i2s_start(i2s_port_t i2s_num) {
+ //start DMA link
+ I2S_ENTER_CRITICAL();
+ i2s_reset_fifo(i2s_num);
+
+ //reset dma
+ I2S[i2s_num]->lc_conf.in_rst = 1;
+ I2S[i2s_num]->lc_conf.in_rst = 0;
+ I2S[i2s_num]->lc_conf.out_rst = 1;
+ I2S[i2s_num]->lc_conf.out_rst = 0;
+
+ I2S[i2s_num]->conf.tx_reset = 1;
+ I2S[i2s_num]->conf.tx_reset = 0;
+ I2S[i2s_num]->conf.rx_reset = 1;
+ I2S[i2s_num]->conf.rx_reset = 0;
+
+ I2S[i2s_num]->int_clr.val = 0xFFFFFFFF;
+ I2S[i2s_num]->out_link.start = 1;
+ I2S[i2s_num]->conf.tx_start = 1;
+ I2S_EXIT_CRITICAL();
+
+ return ESP_OK;
+}
+
+esp_err_t i2s_stop(i2s_port_t i2s_num) {
+ I2S_ENTER_CRITICAL();
+ I2S[i2s_num]->out_link.stop = 1;
+ I2S[i2s_num]->conf.tx_start = 0;
+
+ I2S[i2s_num]->int_clr.val = I2S[i2s_num]->int_st.val; //clear pending interrupt
+ I2S_EXIT_CRITICAL();
+
+ return ESP_OK;
+}
+
+static void IRAM_ATTR i2s_intr_handler_default(void *arg) {
+ int dummy;
+ lldesc_t *finish_desc;
+ portBASE_TYPE high_priority_task_awoken = pdFALSE;
+
+ if (I2S0.int_st.out_eof) {
+ // Get the descriptor of the last item in the linkedlist
+ finish_desc = (lldesc_t*) I2S0.out_eof_des_addr;
+
+ // If the queue is full it's because we have an underflow,
+ // more than buf_count isr without new data, remove the front buffer
+ if (xQueueIsQueueFullFromISR(dma.queue))
+ xQueueReceiveFromISR(dma.queue, &dummy, &high_priority_task_awoken);
+
+ xQueueSendFromISR(dma.queue, (void *)(&finish_desc->buf), &high_priority_task_awoken);
+ }
+
+ if (high_priority_task_awoken == pdTRUE) portYIELD_FROM_ISR();
+
+ // clear interrupt
+ I2S0.int_clr.val = I2S0.int_st.val; //clear pending interrupt
+}
+
+void stepperTask(void* parameter) {
+ uint32_t remaining = 0;
+
+ while (1) {
+ xQueueReceive(dma.queue, &dma.current, portMAX_DELAY);
+ dma.rw_pos = 0;
+
+ while (dma.rw_pos < DMA_SAMPLE_COUNT) {
+ // Fill with the port data post pulse_phase until the next step
+ if (remaining) {
+ i2s_push_sample();
+ remaining--;
+ }
+ else {
+ Stepper::pulse_phase_isr();
+ remaining = Stepper::block_phase_isr();
+ }
+ }
+ }
+}
+
+int i2s_init() {
+ periph_module_enable(PERIPH_I2S0_MODULE);
+
+ /**
+ * Each i2s transfer will take
+ * fpll = PLL_D2_CLK -- clka_en = 0
+ *
+ * fi2s = fpll / N + b/a -- N = clkm_div_num
+ * fi2s = 160MHz / 2
+ * fi2s = 80MHz
+ *
+ * fbclk = fi2s / M -- M = tx_bck_div_num
+ * fbclk = 80MHz / 2
+ * fbclk = 40MHz
+ *
+ * fwclk = fbclk / 32
+ *
+ * for fwclk = 250kHz (4µS pulse time)
+ * N = 10
+ * M = 20
+ */
+
+ // Allocate the array of pointers to the buffers
+ dma.buffers = (uint32_t **)malloc(sizeof(uint32_t*) * DMA_BUF_COUNT);
+ if (!dma.buffers) return -1;
+
+ // Allocate each buffer that can be used by the DMA controller
+ for (int buf_idx = 0; buf_idx < DMA_BUF_COUNT; buf_idx++) {
+ dma.buffers[buf_idx] = (uint32_t*) heap_caps_calloc(1, DMA_BUF_LEN, MALLOC_CAP_DMA);
+ if (dma.buffers[buf_idx] == nullptr) return -1;
+ }
+
+ // Allocate the array of DMA descriptors
+ dma.desc = (lldesc_t**) malloc(sizeof(lldesc_t*) * DMA_BUF_COUNT);
+ if (!dma.desc) return -1;
+
+ // Allocate each DMA descriptor that will be used by the DMA controller
+ for (int buf_idx = 0; buf_idx < DMA_BUF_COUNT; buf_idx++) {
+ dma.desc[buf_idx] = (lldesc_t*) heap_caps_malloc(sizeof(lldesc_t), MALLOC_CAP_DMA);
+ if (dma.desc[buf_idx] == nullptr) return -1;
+ }
+
+ // Initialize
+ for (int buf_idx = 0; buf_idx < DMA_BUF_COUNT; buf_idx++) {
+ dma.desc[buf_idx]->owner = 1;
+ dma.desc[buf_idx]->eof = 1; // set to 1 will trigger the interrupt
+ dma.desc[buf_idx]->sosf = 0;
+ dma.desc[buf_idx]->length = DMA_BUF_LEN;
+ dma.desc[buf_idx]->size = DMA_BUF_LEN;
+ dma.desc[buf_idx]->buf = (uint8_t *) dma.buffers[buf_idx];
+ dma.desc[buf_idx]->offset = 0;
+ dma.desc[buf_idx]->empty = (uint32_t)((buf_idx < (DMA_BUF_COUNT - 1)) ? (dma.desc[buf_idx + 1]) : dma.desc[0]);
+ }
+
+ dma.queue = xQueueCreate(DMA_BUF_COUNT, sizeof(uint32_t *));
+
+ // Set the first DMA descriptor
+ I2S0.out_link.addr = (uint32_t)dma.desc[0];
+
+ // stop i2s
+ i2s_stop(I2S_NUM_0);
+
+ // configure I2S data port interface.
+ i2s_reset_fifo(I2S_NUM_0);
+
+ //reset i2s
+ I2S0.conf.tx_reset = 1;
+ I2S0.conf.tx_reset = 0;
+ I2S0.conf.rx_reset = 1;
+ I2S0.conf.rx_reset = 0;
+
+ //reset dma
+ I2S0.lc_conf.in_rst = 1;
+ I2S0.lc_conf.in_rst = 0;
+ I2S0.lc_conf.out_rst = 1;
+ I2S0.lc_conf.out_rst = 0;
+
+ //Enable and configure DMA
+ I2S0.lc_conf.check_owner = 0;
+ I2S0.lc_conf.out_loop_test = 0;
+ I2S0.lc_conf.out_auto_wrback = 0;
+ I2S0.lc_conf.out_data_burst_en = 0;
+ I2S0.lc_conf.outdscr_burst_en = 0;
+ I2S0.lc_conf.out_no_restart_clr = 0;
+ I2S0.lc_conf.indscr_burst_en = 0;
+ I2S0.lc_conf.out_eof_mode = 1;
+
+ I2S0.conf2.lcd_en = 0;
+ I2S0.conf2.camera_en = 0;
+ I2S0.pdm_conf.pcm2pdm_conv_en = 0;
+ I2S0.pdm_conf.pdm2pcm_conv_en = 0;
+
+ I2S0.fifo_conf.dscr_en = 0;
+
+ I2S0.conf_chan.tx_chan_mod = (
+ #if ENABLED(I2S_STEPPER_SPLIT_STREAM)
+ 4
+ #else
+ 0
+ #endif
+ );
+ I2S0.fifo_conf.tx_fifo_mod = 0;
+ I2S0.conf.tx_mono = 0;
+
+ I2S0.conf_chan.rx_chan_mod = 0;
+ I2S0.fifo_conf.rx_fifo_mod = 0;
+ I2S0.conf.rx_mono = 0;
+
+ I2S0.fifo_conf.dscr_en = 1; //connect dma to fifo
+
+ I2S0.conf.tx_start = 0;
+ I2S0.conf.rx_start = 0;
+
+ I2S0.conf.tx_msb_right = 1;
+ I2S0.conf.tx_right_first = 1;
+
+ I2S0.conf.tx_slave_mod = 0; // Master
+ I2S0.fifo_conf.tx_fifo_mod_force_en = 1;
+
+ I2S0.pdm_conf.rx_pdm_en = 0;
+ I2S0.pdm_conf.tx_pdm_en = 0;
+
+ I2S0.conf.tx_short_sync = 0;
+ I2S0.conf.rx_short_sync = 0;
+ I2S0.conf.tx_msb_shift = 0;
+ I2S0.conf.rx_msb_shift = 0;
+
+ // set clock
+ I2S0.clkm_conf.clka_en = 0; // Use PLL/2 as reference
+ I2S0.clkm_conf.clkm_div_num = 10; // minimum value of 2, reset value of 4, max 256
+ I2S0.clkm_conf.clkm_div_a = 0; // 0 at reset, what about divide by 0? (not an issue)
+ I2S0.clkm_conf.clkm_div_b = 0; // 0 at reset
+
+ // fbck = fi2s / tx_bck_div_num
+ I2S0.sample_rate_conf.tx_bck_div_num = 2; // minimum value of 2 defaults to 6
+
+ // Enable TX interrupts
+ I2S0.int_ena.out_eof = 1;
+ I2S0.int_ena.out_dscr_err = 0;
+ I2S0.int_ena.out_total_eof = 0;
+ I2S0.int_ena.out_done = 0;
+
+ // Allocate and Enable the I2S interrupt
+ intr_handle_t i2s_isr_handle;
+ esp_intr_alloc(ETS_I2S0_INTR_SOURCE, 0, i2s_intr_handler_default, nullptr, &i2s_isr_handle);
+ esp_intr_enable(i2s_isr_handle);
+
+ // Create the task that will feed the buffer
+ xTaskCreatePinnedToCore(stepperTask, "StepperTask", 10000, nullptr, 1, nullptr, CONFIG_ARDUINO_RUNNING_CORE); // run I2S stepper task on same core as rest of Marlin
+
+ // Route the i2s pins to the appropriate GPIO
+ gpio_matrix_out_check(I2S_DATA, I2S0O_DATA_OUT23_IDX, 0, 0);
+ gpio_matrix_out_check(I2S_BCK, I2S0O_BCK_OUT_IDX, 0, 0);
+ gpio_matrix_out_check(I2S_WS, I2S0O_WS_OUT_IDX, 0, 0);
+
+ // Start the I2S peripheral
+ return i2s_start(I2S_NUM_0);
+}
+
+void i2s_write(uint8_t pin, uint8_t val) {
+ #if ENABLED(I2S_STEPPER_SPLIT_STREAM)
+ if (pin >= 16) {
+ SET_BIT_TO(I2S0.conf_single_data, pin, val);
+ return;
+ }
+ #endif
+ SET_BIT_TO(i2s_port_data, pin, val);
+}
+
+uint8_t i2s_state(uint8_t pin) {
+ #if ENABLED(I2S_STEPPER_SPLIT_STREAM)
+ if (pin >= 16) return TEST(I2S0.conf_single_data, pin);
+ #endif
+ return TEST(i2s_port_data, pin);
+}
+
+void i2s_push_sample() {
+ dma.current[dma.rw_pos++] = i2s_port_data;
+}
+
+#endif // ARDUINO_ARCH_ESP32
diff --git a/Marlin/src/HAL/ESP32/i2s.h b/Marlin/src/HAL/ESP32/i2s.h
new file mode 100644
index 0000000..573b983
--- /dev/null
+++ b/Marlin/src/HAL/ESP32/i2s.h
@@ -0,0 +1,35 @@
+/**
+ * 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 .
+ *
+ */
+#pragma once
+
+#include
+
+// current value of the outputs provided over i2s
+extern uint32_t i2s_port_data;
+
+int i2s_init();
+
+uint8_t i2s_state(uint8_t pin);
+
+void i2s_write(uint8_t pin, uint8_t val);
+
+void i2s_push_sample();
diff --git a/Marlin/src/HAL/ESP32/inc/Conditionals_LCD.h b/Marlin/src/HAL/ESP32/inc/Conditionals_LCD.h
new file mode 100644
index 0000000..4da6001
--- /dev/null
+++ b/Marlin/src/HAL/ESP32/inc/Conditionals_LCD.h
@@ -0,0 +1,26 @@
+/**
+ * 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 .
+ *
+ */
+#pragma once
+
+#if HAS_SPI_TFT || HAS_FSMC_TFT
+ #error "Sorry! TFT displays are not available for HAL/ESP32."
+#endif
diff --git a/Marlin/src/HAL/ESP32/inc/Conditionals_adv.h b/Marlin/src/HAL/ESP32/inc/Conditionals_adv.h
new file mode 100644
index 0000000..5f1c4b1
--- /dev/null
+++ b/Marlin/src/HAL/ESP32/inc/Conditionals_adv.h
@@ -0,0 +1,22 @@
+/**
+ * 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 .
+ *
+ */
+#pragma once
diff --git a/Marlin/src/HAL/ESP32/inc/Conditionals_post.h b/Marlin/src/HAL/ESP32/inc/Conditionals_post.h
new file mode 100644
index 0000000..5f1c4b1
--- /dev/null
+++ b/Marlin/src/HAL/ESP32/inc/Conditionals_post.h
@@ -0,0 +1,22 @@
+/**
+ * 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 .
+ *
+ */
+#pragma once
diff --git a/Marlin/src/HAL/ESP32/inc/SanityCheck.h b/Marlin/src/HAL/ESP32/inc/SanityCheck.h
new file mode 100644
index 0000000..f57a6c5
--- /dev/null
+++ b/Marlin/src/HAL/ESP32/inc/SanityCheck.h
@@ -0,0 +1,38 @@
+/**
+ * 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 .
+ *
+ */
+#pragma once
+
+#if ENABLED(EMERGENCY_PARSER)
+ #error "EMERGENCY_PARSER is not yet implemented for ESP32. Disable EMERGENCY_PARSER to continue."
+#endif
+
+#if ENABLED(FAST_PWM_FAN) || SPINDLE_LASER_FREQUENCY
+ #error "Features requiring Hardware PWM (FAST_PWM_FAN, SPINDLE_LASER_FREQUENCY) are not yet supported on ESP32."
+#endif
+
+#if HAS_TMC_SW_SERIAL
+ #error "TMC220x Software Serial is not supported on this platform."
+#endif
+
+#if BOTH(WIFISUPPORT, ESP3D_WIFISUPPORT)
+ #error "Only enable one WiFi option, either WIFISUPPORT or ESP3D_WIFISUPPORT."
+#endif
diff --git a/Marlin/src/HAL/ESP32/ota.cpp b/Marlin/src/HAL/ESP32/ota.cpp
new file mode 100644
index 0000000..69a3e25
--- /dev/null
+++ b/Marlin/src/HAL/ESP32/ota.cpp
@@ -0,0 +1,72 @@
+/**
+ * Marlin 3D Printer Firmware
+ * Copyright (c) 2020 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
+ * Copyright (c) 2016 Bob Cousins bobcousins42@googlemail.com
+ *
+ * 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 .
+ *
+ */
+
+#ifdef ARDUINO_ARCH_ESP32
+
+#include "../../inc/MarlinConfigPre.h"
+
+#if BOTH(WIFISUPPORT, OTASUPPORT)
+
+#include
+#include
+#include
+#include
+#include
+
+void OTA_init() {
+ ArduinoOTA
+ .onStart([]() {
+ timer_pause(TIMER_GROUP_0, TIMER_0);
+ timer_pause(TIMER_GROUP_0, TIMER_1);
+
+ // U_FLASH or U_SPIFFS
+ String type = (ArduinoOTA.getCommand() == U_FLASH) ? "sketch" : "filesystem";
+
+ // NOTE: if updating SPIFFS this would be the place to unmount SPIFFS using SPIFFS.end()
+ Serial.println("Start updating " + type);
+ })
+ .onEnd([]() {
+ Serial.println("\nEnd");
+ })
+ .onProgress([](unsigned int progress, unsigned int total) {
+ Serial.printf("Progress: %u%%\r", (progress / (total / 100)));
+ })
+ .onError([](ota_error_t error) {
+ Serial.printf("Error[%u]: ", error);
+ char *str;
+ switch (error) {
+ case OTA_AUTH_ERROR: str = "Auth Failed"; break;
+ case OTA_BEGIN_ERROR: str = "Begin Failed"; break;
+ case OTA_CONNECT_ERROR: str = "Connect Failed"; break;
+ case OTA_RECEIVE_ERROR: str = "Receive Failed"; break;
+ case OTA_END_ERROR: str = "End Failed"; break;
+ }
+ Serial.println(str);
+ });
+
+ ArduinoOTA.begin();
+}
+
+void OTA_handle() {
+ ArduinoOTA.handle();
+}
+
+#endif // WIFISUPPORT && OTASUPPORT
+#endif // ARDUINO_ARCH_ESP32
diff --git a/Marlin/src/HAL/ESP32/ota.h b/Marlin/src/HAL/ESP32/ota.h
new file mode 100644
index 0000000..546ace8
--- /dev/null
+++ b/Marlin/src/HAL/ESP32/ota.h
@@ -0,0 +1,23 @@
+/**
+ * Marlin 3D Printer Firmware
+ * Copyright (c) 2020 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
+ * Copyright (c) 2016 Bob Cousins bobcousins42@googlemail.com
+ *
+ * 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
+
+void OTA_init();
+void OTA_handle();
diff --git a/Marlin/src/HAL/ESP32/servotimers.h b/Marlin/src/HAL/ESP32/servotimers.h
new file mode 100644
index 0000000..5f1c4b1
--- /dev/null
+++ b/Marlin/src/HAL/ESP32/servotimers.h
@@ -0,0 +1,22 @@
+/**
+ * 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 .
+ *
+ */
+#pragma once
diff --git a/Marlin/src/HAL/ESP32/spi_pins.h b/Marlin/src/HAL/ESP32/spi_pins.h
new file mode 100644
index 0000000..cfe71ee
--- /dev/null
+++ b/Marlin/src/HAL/ESP32/spi_pins.h
@@ -0,0 +1,24 @@
+/**
+ * Marlin 3D Printer Firmware
+ * Copyright (c) 2020 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
+ *
+ * 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
+
+#define SD_SS_PIN SDSS
+#define SD_SCK_PIN 18
+#define SD_MISO_PIN 19
+#define SD_MOSI_PIN 23
diff --git a/Marlin/src/HAL/ESP32/spiffs.cpp b/Marlin/src/HAL/ESP32/spiffs.cpp
new file mode 100644
index 0000000..a0e713b
--- /dev/null
+++ b/Marlin/src/HAL/ESP32/spiffs.cpp
@@ -0,0 +1,43 @@
+/**
+ * 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 .
+ *
+ */
+#ifdef ARDUINO_ARCH_ESP32
+
+#include "../../inc/MarlinConfigPre.h"
+
+#if BOTH(WIFISUPPORT, WEBSUPPORT)
+
+#include "../../core/serial.h"
+
+#include
+#include
+
+bool spiffs_initialized;
+
+void spiffs_init() {
+ if (SPIFFS.begin(true)) // formatOnFail = true
+ spiffs_initialized = true;
+ else
+ SERIAL_ERROR_MSG("SPIFFS mount failed");
+}
+
+#endif // WIFISUPPORT && WEBSUPPORT
+#endif // ARDUINO_ARCH_ESP32
diff --git a/Marlin/src/HAL/ESP32/spiffs.h b/Marlin/src/HAL/ESP32/spiffs.h
new file mode 100644
index 0000000..64ec7dd
--- /dev/null
+++ b/Marlin/src/HAL/ESP32/spiffs.h
@@ -0,0 +1,26 @@
+/**
+ * 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 .
+ *
+ */
+#pragma once
+
+extern bool spiffs_initialized;
+
+void spiffs_init();
diff --git a/Marlin/src/HAL/ESP32/timers.cpp b/Marlin/src/HAL/ESP32/timers.cpp
new file mode 100644
index 0000000..57662a6
--- /dev/null
+++ b/Marlin/src/HAL/ESP32/timers.cpp
@@ -0,0 +1,171 @@
+/**
+ * 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 .
+ *
+ */
+#ifdef ARDUINO_ARCH_ESP32
+
+#include
+#include
+#include
+#include
+#include
+
+#include "../../inc/MarlinConfig.h"
+
+// ------------------------
+// Local defines
+// ------------------------
+
+#define NUM_HARDWARE_TIMERS 4
+
+// ------------------------
+// Private Variables
+// ------------------------
+
+static timg_dev_t *TG[2] = {&TIMERG0, &TIMERG1};
+
+const tTimerConfig TimerConfig [NUM_HARDWARE_TIMERS] = {
+ { TIMER_GROUP_0, TIMER_0, STEPPER_TIMER_PRESCALE, stepTC_Handler }, // 0 - Stepper
+ { TIMER_GROUP_0, TIMER_1, TEMP_TIMER_PRESCALE, tempTC_Handler }, // 1 - Temperature
+ { TIMER_GROUP_1, TIMER_0, PWM_TIMER_PRESCALE, pwmTC_Handler }, // 2 - PWM
+ { TIMER_GROUP_1, TIMER_1, TONE_TIMER_PRESCALE, toneTC_Handler }, // 3 - Tone
+};
+
+// ------------------------
+// Public functions
+// ------------------------
+
+void IRAM_ATTR timer_isr(void *para) {
+ const tTimerConfig& timer = TimerConfig[(int)para];
+
+ // Retrieve the interrupt status and the counter value
+ // from the timer that reported the interrupt
+ uint32_t intr_status = TG[timer.group]->int_st_timers.val;
+ TG[timer.group]->hw_timer[timer.idx].update = 1;
+
+ // Clear the interrupt
+ if (intr_status & BIT(timer.idx)) {
+ switch (timer.idx) {
+ case TIMER_0: TG[timer.group]->int_clr_timers.t0 = 1; break;
+ case TIMER_1: TG[timer.group]->int_clr_timers.t1 = 1; break;
+ case TIMER_MAX: break;
+ }
+ }
+
+ timer.fn();
+
+ // After the alarm has been triggered
+ // Enable it again so it gets triggered the next time
+ TG[timer.group]->hw_timer[timer.idx].config.alarm_en = TIMER_ALARM_EN;
+}
+
+/**
+ * Enable and initialize the timer
+ * @param timer_num timer number to initialize
+ * @param frequency frequency of the timer
+ */
+void HAL_timer_start(const uint8_t timer_num, uint32_t frequency) {
+ const tTimerConfig timer = TimerConfig[timer_num];
+
+ timer_config_t config;
+ config.divider = timer.divider;
+ config.counter_dir = TIMER_COUNT_UP;
+ config.counter_en = TIMER_PAUSE;
+ config.alarm_en = TIMER_ALARM_EN;
+ config.intr_type = TIMER_INTR_LEVEL;
+ config.auto_reload = true;
+
+ // Select and initialize the timer
+ timer_init(timer.group, timer.idx, &config);
+
+ // Timer counter initial value and auto reload on alarm
+ timer_set_counter_value(timer.group, timer.idx, 0x00000000ULL);
+
+ // Configure the alam value and the interrupt on alarm
+ timer_set_alarm_value(timer.group, timer.idx, (HAL_TIMER_RATE) / timer.divider / frequency - 1);
+
+ timer_enable_intr(timer.group, timer.idx);
+
+ timer_isr_register(timer.group, timer.idx, timer_isr, (void*)(uint32_t)timer_num, 0, nullptr);
+
+ timer_start(timer.group, timer.idx);
+}
+
+/**
+ * Set the upper value of the timer, when the timer reaches this upper value the
+ * interrupt should be triggered and the counter reset
+ * @param timer_num timer number to set the count to
+ * @param count threshold at which the interrupt is triggered
+ */
+void HAL_timer_set_compare(const uint8_t timer_num, hal_timer_t count) {
+ const tTimerConfig timer = TimerConfig[timer_num];
+ timer_set_alarm_value(timer.group, timer.idx, count);
+}
+
+/**
+ * Get the current upper value of the timer
+ * @param timer_num timer number to get the count from
+ * @return the timer current threshold for the alarm to be triggered
+ */
+hal_timer_t HAL_timer_get_compare(const uint8_t timer_num) {
+ const tTimerConfig timer = TimerConfig[timer_num];
+
+ uint64_t alarm_value;
+ timer_get_alarm_value(timer.group, timer.idx, &alarm_value);
+
+ return alarm_value;
+}
+
+/**
+ * Get the current counter value between 0 and the maximum count (HAL_timer_set_count)
+ * @param timer_num timer number to get the current count
+ * @return the current counter of the alarm
+ */
+hal_timer_t HAL_timer_get_count(const uint8_t timer_num) {
+ const tTimerConfig timer = TimerConfig[timer_num];
+ uint64_t counter_value;
+ timer_get_counter_value(timer.group, timer.idx, &counter_value);
+ return counter_value;
+}
+
+/**
+ * Enable timer interrupt on the timer
+ * @param timer_num timer number to enable interrupts on
+ */
+void HAL_timer_enable_interrupt(const uint8_t timer_num) {
+ //const tTimerConfig timer = TimerConfig[timer_num];
+ //timer_enable_intr(timer.group, timer.idx);
+}
+
+/**
+ * Disable timer interrupt on the timer
+ * @param timer_num timer number to disable interrupts on
+ */
+void HAL_timer_disable_interrupt(const uint8_t timer_num) {
+ //const tTimerConfig timer = TimerConfig[timer_num];
+ //timer_disable_intr(timer.group, timer.idx);
+}
+
+bool HAL_timer_interrupt_enabled(const uint8_t timer_num) {
+ const tTimerConfig timer = TimerConfig[timer_num];
+ return TG[timer.group]->int_ena.val | BIT(timer_num);
+}
+
+#endif // ARDUINO_ARCH_ESP32
diff --git a/Marlin/src/HAL/ESP32/timers.h b/Marlin/src/HAL/ESP32/timers.h
new file mode 100644
index 0000000..a476971
--- /dev/null
+++ b/Marlin/src/HAL/ESP32/timers.h
@@ -0,0 +1,140 @@
+/**
+ * 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 .
+ *
+ */
+#pragma once
+
+#include
+#include
+
+// ------------------------
+// Defines
+// ------------------------
+#define FORCE_INLINE __attribute__((always_inline)) inline
+
+typedef uint64_t hal_timer_t;
+#define HAL_TIMER_TYPE_MAX 0xFFFFFFFFFFFFFFFFULL
+
+#ifndef STEP_TIMER_NUM
+ #define STEP_TIMER_NUM 0 // Timer Index for Stepper
+#endif
+#ifndef PULSE_TIMER_NUM
+ #define PULSE_TIMER_NUM STEP_TIMER_NUM
+#endif
+#ifndef TEMP_TIMER_NUM
+ #define TEMP_TIMER_NUM 1 // Timer Index for Temperature
+#endif
+#ifndef PWM_TIMER_NUM
+ #define PWM_TIMER_NUM 2 // index of timer to use for PWM outputs
+#endif
+#ifndef TONE_TIMER_NUM
+ #define TONE_TIMER_NUM 3 // index of timer for beeper tones
+#endif
+
+#define HAL_TIMER_RATE APB_CLK_FREQ // frequency of timer peripherals
+
+#if ENABLED(I2S_STEPPER_STREAM)
+ #define STEPPER_TIMER_PRESCALE 1
+ #define STEPPER_TIMER_RATE 250000 // 250khz, 4µs pulses of i2s word clock
+ #define STEPPER_TIMER_TICKS_PER_US ((STEPPER_TIMER_RATE) / 1000000) // stepper timer ticks per µs // wrong would be 0.25
+#else
+ #define STEPPER_TIMER_PRESCALE 40
+ #define STEPPER_TIMER_RATE ((HAL_TIMER_RATE) / (STEPPER_TIMER_PRESCALE)) // frequency of stepper timer, 2MHz
+ #define STEPPER_TIMER_TICKS_PER_US ((STEPPER_TIMER_RATE) / 1000000) // stepper timer ticks per µs
+#endif
+
+#define STEP_TIMER_MIN_INTERVAL 8 // minimum time in µs between stepper interrupts
+
+#define TONE_TIMER_PRESCALE 1000 // Arbitrary value, no idea what i'm doing here
+
+#define TEMP_TIMER_PRESCALE 1000 // prescaler for setting Temp timer, 72Khz
+#define TEMP_TIMER_FREQUENCY 1000 // temperature interrupt frequency
+
+#define PWM_TIMER_PRESCALE 10
+#if ENABLED(FAST_PWM_FAN)
+ #define PWM_TIMER_FREQUENCY FAST_PWM_FAN_FREQUENCY
+#else
+ #define PWM_TIMER_FREQUENCY (50*128) // 50Hz and 7bit resolution
+#endif
+#define MAX_PWM_PINS 32 // Number of PWM pin-slots
+
+#define PULSE_TIMER_RATE STEPPER_TIMER_RATE // frequency of pulse timer
+#define PULSE_TIMER_PRESCALE STEPPER_TIMER_PRESCALE
+#define PULSE_TIMER_TICKS_PER_US STEPPER_TIMER_TICKS_PER_US
+
+#define ENABLE_STEPPER_DRIVER_INTERRUPT() HAL_timer_enable_interrupt(STEP_TIMER_NUM)
+#define DISABLE_STEPPER_DRIVER_INTERRUPT() HAL_timer_disable_interrupt(STEP_TIMER_NUM)
+#define STEPPER_ISR_ENABLED() HAL_timer_interrupt_enabled(STEP_TIMER_NUM)
+
+#define ENABLE_TEMPERATURE_INTERRUPT() HAL_timer_enable_interrupt(TEMP_TIMER_NUM)
+#define DISABLE_TEMPERATURE_INTERRUPT() HAL_timer_disable_interrupt(TEMP_TIMER_NUM)
+
+#ifndef HAL_TEMP_TIMER_ISR
+ #define HAL_TEMP_TIMER_ISR() extern "C" void tempTC_Handler()
+#endif
+#ifndef HAL_STEP_TIMER_ISR
+ #define HAL_STEP_TIMER_ISR() extern "C" void stepTC_Handler()
+#endif
+#ifndef HAL_PWM_TIMER_ISR
+ #define HAL_PWM_TIMER_ISR() extern "C" void pwmTC_Handler()
+#endif
+#ifndef HAL_TONE_TIMER_ISR
+ #define HAL_TONE_TIMER_ISR() extern "C" void toneTC_Handler()
+#endif
+
+extern "C" {
+ void tempTC_Handler();
+ void stepTC_Handler();
+ void pwmTC_Handler();
+ void toneTC_Handler();
+}
+
+// ------------------------
+// Types
+// ------------------------
+
+typedef struct {
+ timer_group_t group;
+ timer_idx_t idx;
+ uint32_t divider;
+ void (*fn)();
+} tTimerConfig;
+
+// ------------------------
+// Public Variables
+// ------------------------
+
+extern const tTimerConfig TimerConfig[];
+
+// ------------------------
+// Public functions
+// ------------------------
+
+void HAL_timer_start (const uint8_t timer_num, uint32_t frequency);
+void HAL_timer_set_compare(const uint8_t timer_num, const hal_timer_t count);
+hal_timer_t HAL_timer_get_compare(const uint8_t timer_num);
+hal_timer_t HAL_timer_get_count(const uint8_t timer_num);
+
+void HAL_timer_enable_interrupt(const uint8_t timer_num);
+void HAL_timer_disable_interrupt(const uint8_t timer_num);
+bool HAL_timer_interrupt_enabled(const uint8_t timer_num);
+
+#define HAL_timer_isr_prologue(TIMER_NUM)
+#define HAL_timer_isr_epilogue(TIMER_NUM)
diff --git a/Marlin/src/HAL/ESP32/watchdog.cpp b/Marlin/src/HAL/ESP32/watchdog.cpp
new file mode 100644
index 0000000..5ec03c4
--- /dev/null
+++ b/Marlin/src/HAL/ESP32/watchdog.cpp
@@ -0,0 +1,42 @@
+/**
+ * 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 .
+ *
+ */
+#ifdef ARDUINO_ARCH_ESP32
+
+#include "../../inc/MarlinConfig.h"
+
+#if ENABLED(USE_WATCHDOG)
+
+#define WDT_TIMEOUT_US TERN(WATCHDOG_DURATION_8S, 8000000, 4000000) // 4 or 8 second timeout
+
+#include "watchdog.h"
+
+void watchdogSetup() {
+ // do whatever. don't remove this function.
+}
+
+void watchdog_init() {
+ // TODO
+}
+
+#endif // USE_WATCHDOG
+
+#endif // ARDUINO_ARCH_ESP32
diff --git a/Marlin/src/HAL/ESP32/watchdog.h b/Marlin/src/HAL/ESP32/watchdog.h
new file mode 100644
index 0000000..b6c169e
--- /dev/null
+++ b/Marlin/src/HAL/ESP32/watchdog.h
@@ -0,0 +1,38 @@
+/**
+ * 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 .
+ *
+ */
+#pragma once
+
+#ifdef __cplusplus
+ extern "C" {
+#endif
+
+ esp_err_t esp_task_wdt_reset();
+
+#ifdef __cplusplus
+ }
+#endif
+
+// Initialize watchdog with a 4 second interrupt time
+void watchdog_init();
+
+// Reset watchdog.
+inline void HAL_watchdog_refresh() { esp_task_wdt_reset(); }
diff --git a/Marlin/src/HAL/ESP32/web.cpp b/Marlin/src/HAL/ESP32/web.cpp
new file mode 100644
index 0000000..7a27707
--- /dev/null
+++ b/Marlin/src/HAL/ESP32/web.cpp
@@ -0,0 +1,47 @@
+/**
+ * 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 .
+ *
+ */
+#ifdef ARDUINO_ARCH_ESP32
+
+#include "../../inc/MarlinConfigPre.h"
+
+#if BOTH(WIFISUPPORT, WEBSUPPORT)
+
+#include "../../inc/MarlinConfig.h"
+
+#undef DISABLED // esp32-hal-gpio.h
+#include
+#include "wifi.h"
+
+AsyncEventSource events("/events"); // event source (Server-Sent events)
+
+void onNotFound(AsyncWebServerRequest *request) {
+ request->send(404);
+}
+
+void web_init() {
+ server.addHandler(&events); // attach AsyncEventSource
+ server.serveStatic("/", SPIFFS, "/www").setDefaultFile("index.html");
+ server.onNotFound(onNotFound);
+}
+
+#endif // WIFISUPPORT && WEBSUPPORT
+#endif // ARDUINO_ARCH_ESP32
diff --git a/Marlin/src/HAL/ESP32/web.h b/Marlin/src/HAL/ESP32/web.h
new file mode 100644
index 0000000..60023ac
--- /dev/null
+++ b/Marlin/src/HAL/ESP32/web.h
@@ -0,0 +1,24 @@
+/**
+ * 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 .
+ *
+ */
+#pragma once
+
+void web_init();
diff --git a/Marlin/src/HAL/ESP32/wifi.cpp b/Marlin/src/HAL/ESP32/wifi.cpp
new file mode 100644
index 0000000..f4cf5a6
--- /dev/null
+++ b/Marlin/src/HAL/ESP32/wifi.cpp
@@ -0,0 +1,66 @@
+/**
+ * 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 .
+ *
+ */
+#ifdef ARDUINO_ARCH_ESP32
+
+#include "../../core/serial.h"
+#include "../../inc/MarlinConfigPre.h"
+
+#if ENABLED(WIFISUPPORT)
+
+#include
+#include
+#include
+#include "wifi.h"
+
+AsyncWebServer server(80);
+
+#ifndef WIFI_HOSTNAME
+ #define WIFI_HOSTNAME DEFAULT_WIFI_HOSTNAME
+#endif
+
+void wifi_init() {
+
+ SERIAL_ECHO_MSG("Starting WiFi...");
+
+ WiFi.mode(WIFI_STA);
+ WiFi.begin(WIFI_SSID, WIFI_PWD);
+
+ while (WiFi.waitForConnectResult() != WL_CONNECTED) {
+ SERIAL_ERROR_MSG("Unable to connect to WiFi with SSID '" WIFI_SSID "', restarting.");
+ delay(5000);
+ ESP.restart();
+ }
+
+ delay(10);
+ if (!MDNS.begin(WIFI_HOSTNAME)) {
+ SERIAL_ERROR_MSG("Unable to start mDNS with hostname '" WIFI_HOSTNAME "', restarting.");
+ delay(5000);
+ ESP.restart();
+ }
+
+ MDNS.addService("http", "tcp", 80);
+
+ SERIAL_ECHOLNPAIR("Successfully connected to WiFi with SSID '" WIFI_SSID "', hostname: '" WIFI_HOSTNAME "', IP address: ", WiFi.localIP().toString().c_str());
+}
+
+#endif // WIFISUPPORT
+#endif // ARDUINO_ARCH_ESP32
diff --git a/Marlin/src/HAL/ESP32/wifi.h b/Marlin/src/HAL/ESP32/wifi.h
new file mode 100644
index 0000000..759a73b
--- /dev/null
+++ b/Marlin/src/HAL/ESP32/wifi.h
@@ -0,0 +1,30 @@
+/**
+ * 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 .
+ *
+ */
+#pragma once
+
+#include
+
+extern AsyncWebServer server;
+
+#define DEFAULT_WIFI_HOSTNAME "marlin"
+
+void wifi_init();
--
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