Initial commit. Unusable Marlin 2.0.5.3 core without any custimization.

Marlin/src/HAL/AVR/HAL.cpp

@@ -0,0 +1,79 @@
+/**
+ * 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 <http://www.gnu.org/licenses/>.
+ *
+ */
+
+#ifdef __AVR__
+
+#include "../../inc/MarlinConfig.h"
+#include "HAL.h"
+
+// ------------------------
+// Public Variables
+// ------------------------
+
+//uint8_t MCUSR;
+
+// ------------------------
+// Public functions
+// ------------------------
+
+void HAL_init() {
+  // Init Servo Pins
+  #define INIT_SERVO(N) OUT_WRITE(SERVO##N##_PIN, LOW)
+  #if HAS_SERVO_0
+    INIT_SERVO(0);
+  #endif
+  #if HAS_SERVO_1
+    INIT_SERVO(1);
+  #endif
+  #if HAS_SERVO_2
+    INIT_SERVO(2);
+  #endif
+  #if HAS_SERVO_3
+    INIT_SERVO(3);
+  #endif
+}
+
+#if ENABLED(SDSUPPORT)
+
+  #include "../../sd/SdFatUtil.h"
+  int freeMemory() { return SdFatUtil::FreeRam(); }
+
+#else // !SDSUPPORT
+
+extern "C" {
+  extern char __bss_end;
+  extern char __heap_start;
+  extern void* __brkval;
+
+  int freeMemory() {
+    int free_memory;
+    if ((int)__brkval == 0)
+      free_memory = ((int)&free_memory) - ((int)&__bss_end);
+    else
+      free_memory = ((int)&free_memory) - ((int)__brkval);
+    return free_memory;
+  }
+}
+
+#endif // !SDSUPPORT
+
+#endif // __AVR__