4 files changed, 341 insertions, 0 deletions
diff --git a/Marlin/src/HAL/LINUX/include/Arduino.h b/Marlin/src/HAL/LINUX/include/Arduino.h
new file mode 100644
index 0000000..d4086e2
--- /dev/null
+++ b/Marlin/src/HAL/LINUX/include/Arduino.h
@@ -0,0 +1,95 @@
+/**
+ * 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 <https://www.gnu.org/licenses/>.
+ *
+ */
+#pragma once
+
+#include <stddef.h>
+#include <stdint.h>
+#include <math.h>
+#include <cstring>
+
+#include <pinmapping.h>
+
+#define HIGH         0x01
+#define LOW          0x00
+
+#define INPUT          0x00
+#define OUTPUT         0x01
+#define INPUT_PULLUP   0x02
+#define INPUT_PULLDOWN 0x03
+
+#define LSBFIRST     0
+#define MSBFIRST     1
+
+#define CHANGE       0x02
+#define FALLING      0x03
+#define RISING       0x04
+
+typedef uint8_t byte;
+#define PROGMEM
+#define PSTR(v) (v)
+#define PGM_P const char *
+
+// Used for libraries, preprocessor, and constants
+#define abs(x) ((x)>0?(x):-(x))
+
+#ifndef isnan
+  #define isnan std::isnan
+#endif
+#ifndef isinf
+  #define isinf std::isinf
+#endif
+
+#define sq(v) ((v) * (v))
+#define square(v) sq(v)
+#define constrain(value, arg_min, arg_max) ((value) < (arg_min) ? (arg_min) :((value) > (arg_max) ? (arg_max) : (value)))
+
+//Interrupts
+void cli(); // Disable
+void sei(); // Enable
+void attachInterrupt(uint32_t pin, void (*callback)(), uint32_t mode);
+void detachInterrupt(uint32_t pin);
+
+extern "C" {
+  void GpioEnableInt(uint32_t port, uint32_t pin, uint32_t mode);
+  void GpioDisableInt(uint32_t port, uint32_t pin);
+}
+
+// Time functions
+extern "C" void delay(const int milis);
+void _delay_ms(const int delay);
+void delayMicroseconds(unsigned long);
+uint32_t millis();
+
+//IO functions
+void pinMode(const pin_t, const uint8_t);
+void digitalWrite(pin_t, uint8_t);
+bool digitalRead(pin_t);
+void analogWrite(pin_t, int);
+uint16_t analogRead(pin_t);
+
+int32_t random(int32_t);
+int32_t random(int32_t, int32_t);
+void randomSeed(uint32_t);
+
+char *dtostrf(double __val, signed char __width, unsigned char __prec, char *__s);
+
+int map(uint16_t x, uint16_t in_min, uint16_t in_max, uint16_t out_min, uint16_t out_max);
diff --git a/Marlin/src/HAL/LINUX/include/pinmapping.cpp b/Marlin/src/HAL/LINUX/include/pinmapping.cpp
new file mode 100644
index 0000000..870ab3a
--- /dev/null
+++ b/Marlin/src/HAL/LINUX/include/pinmapping.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 <https://www.gnu.org/licenses/>.
+ *
+ */
+#ifdef __PLAT_LINUX__
+
+#include <pinmapping.h>
+
+#include "../../../gcode/parser.h"
+
+uint8_t analog_offset = NUM_DIGITAL_PINS - NUM_ANALOG_INPUTS;
+
+// Get the digital pin for an analog index
+pin_t analogInputToDigitalPin(const int8_t p) {
+  return (WITHIN(p, 0, NUM_ANALOG_INPUTS) ? analog_offset + p : P_NC);
+}
+
+// Return the index of a pin number
+int16_t GET_PIN_MAP_INDEX(const pin_t pin) {
+  return pin;
+}
+
+// Test whether the pin is valid
+bool VALID_PIN(const pin_t p) {
+  return WITHIN(p, 0, NUM_DIGITAL_PINS);
+}
+
+// Get the analog index for a digital pin
+int8_t DIGITAL_PIN_TO_ANALOG_PIN(const pin_t p) {
+  return (WITHIN(p, analog_offset, NUM_DIGITAL_PINS) ? p - analog_offset : P_NC);
+}
+
+// Test whether the pin is PWM
+bool PWM_PIN(const pin_t p) {
+  return false;
+}
+
+// Test whether the pin is interruptable
+bool INTERRUPT_PIN(const pin_t p) {
+  return false;
+}
+
+// Get the pin number at the given index
+pin_t GET_PIN_MAP_PIN(const int16_t ind) {
+  return ind;
+}
+
+int16_t PARSED_PIN_INDEX(const char code, const int16_t dval) {
+  return parser.intval(code, dval);
+}
+
+#endif // __PLAT_LINUX__
diff --git a/Marlin/src/HAL/LINUX/include/pinmapping.h b/Marlin/src/HAL/LINUX/include/pinmapping.h
new file mode 100644
index 0000000..98f4b81
--- /dev/null
+++ b/Marlin/src/HAL/LINUX/include/pinmapping.h
@@ -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
+ *
+ * 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 <https://www.gnu.org/licenses/>.
+ *
+ */
+#pragma once
+
+#include "../../../inc/MarlinConfigPre.h"
+
+#include <stdint.h>
+#include "../hardware/Gpio.h"
+
+typedef pin_type pin_t;
+
+#define P_NC -1
+constexpr uint16_t NUM_DIGITAL_PINS = Gpio::pin_count;
+constexpr uint8_t NUM_ANALOG_INPUTS = 16;
+
+#define HAL_SENSITIVE_PINS
+
+// Get the digital pin for an analog index
+pin_t analogInputToDigitalPin(const int8_t p);
+
+// Return the index of a pin number
+int16_t GET_PIN_MAP_INDEX(const pin_t pin);
+
+// Test whether the pin is valid
+bool VALID_PIN(const pin_t p);
+
+// Get the analog index for a digital pin
+int8_t DIGITAL_PIN_TO_ANALOG_PIN(const pin_t p);
+
+// Test whether the pin is PWM
+bool PWM_PIN(const pin_t p);
+
+// Test whether the pin is interruptable
+bool INTERRUPT_PIN(const pin_t p);
+
+// Get the pin number at the given index
+pin_t GET_PIN_MAP_PIN(const int16_t ind);
+
+// Parse a G-code word into a pin index
+int16_t PARSED_PIN_INDEX(const char code, const int16_t dval);
diff --git a/Marlin/src/HAL/LINUX/include/serial.h b/Marlin/src/HAL/LINUX/include/serial.h
new file mode 100644
index 0000000..2585be2
--- /dev/null
+++ b/Marlin/src/HAL/LINUX/include/serial.h
@@ -0,0 +1,118 @@
+/**
+ * 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 <https://www.gnu.org/licenses/>.
+ *
+ */
+#pragma once
+
+#include "../../../inc/MarlinConfigPre.h"
+#if ENABLED(EMERGENCY_PARSER)
+  #include "../../../feature/e_parser.h"
+#endif
+#include "../../../core/serial_hook.h"
+
+#include <stdarg.h>
+#include <stdio.h>
+
+/**
+ * Generic RingBuffer
+ * T type of the buffer array
+ * S size of the buffer (must be power of 2)
+ */
+template <typename T, uint32_t S> class RingBuffer {
+public:
+  RingBuffer() { index_read = index_write = 0; }
+  uint32_t available() volatile { return index_write - index_read; }
+  uint32_t free() volatile      { return buffer_size - available(); }
+  bool empty() volatile         { return index_read == index_write; }
+  bool full() volatile          { return available() == buffer_size; }
+  void clear() volatile         { index_read = index_write = 0; }
+
+  bool peek(T *value) volatile {
+    if (value == 0 || available() == 0)
+      return false;
+    *value = buffer[mask(index_read)];
+    return true;
+  }
+
+  int read() volatile {
+    if (empty()) return -1;
+    return buffer[mask(index_read++)];
+  }
+
+  bool write(T value) volatile {
+    if (full()) return false;
+    buffer[mask(index_write++)] = value;
+    return true;
+  }
+
+private:
+  uint32_t mask(uint32_t val) volatile {
+    return buffer_mask & val;
+  }
+
+  static const uint32_t buffer_size = S;
+  static const uint32_t buffer_mask = buffer_size - 1;
+  volatile T buffer[buffer_size];
+  volatile uint32_t index_write;
+  volatile uint32_t index_read;
+};
+
+struct HalSerial {
+  HalSerial() { host_connected = true; }
+
+  void begin(int32_t) {}
+  void end()          {}
+
+  int peek() {
+    uint8_t value;
+    return receive_buffer.peek(&value) ? value : -1;
+  }
+
+  int read() { return receive_buffer.read(); }
+
+  size_t write(char c) {
+    if (!host_connected) return 0;
+    while (!transmit_buffer.free());
+    return transmit_buffer.write(c);
+  }
+
+  bool connected() { return host_connected; }
+
+  uint16_t available() {
+    return (uint16_t)receive_buffer.available();
+  }
+
+  void flush() { receive_buffer.clear(); }
+
+  uint8_t availableForWrite() {
+    return transmit_buffer.free() > 255 ? 255 : (uint8_t)transmit_buffer.free();
+  }
+
+  void flushTX() {
+    if (host_connected)
+      while (transmit_buffer.available()) { /* nada */ }
+  }
+
+  volatile RingBuffer<uint8_t, 128> receive_buffer;
+  volatile RingBuffer<uint8_t, 128> transmit_buffer;
+  volatile bool host_connected;
+};
+
+typedef Serial0Type<HalSerial> MSerialT;