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- /**
- * 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 __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__
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