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113 lines
2.8 KiB
113 lines
2.8 KiB
/**
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* Marlin 3D Printer Firmware
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* Copyright (c) 2020 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
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*
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* Based on Sprinter and grbl.
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* Copyright (c) 2011 Camiel Gubbels / Erik van der Zalm
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <https://www.gnu.org/licenses/>.
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*
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*/
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#ifdef __AVR__
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#include "../../inc/MarlinConfig.h"
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#include "HAL.h"
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#ifdef USBCON
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DefaultSerial1 MSerial0(false, Serial);
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#ifdef BLUETOOTH
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BTSerial btSerial(false, bluetoothSerial);
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#endif
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#endif
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// ------------------------
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// Public Variables
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// ------------------------
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// Don't initialize/override variable (which would happen in .init4)
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uint8_t reset_reason __attribute__((section(".noinit")));
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// ------------------------
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// Public functions
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// ------------------------
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__attribute__((naked)) // Don't output function pro- and epilogue
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__attribute__((used)) // Output the function, even if "not used"
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__attribute__((section(".init3"))) // Put in an early user definable section
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void HAL_save_reset_reason() {
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#if ENABLED(OPTIBOOT_RESET_REASON)
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__asm__ __volatile__(
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A("STS %0, r2")
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: "=m"(reset_reason)
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);
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#else
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reset_reason = MCUSR;
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#endif
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// Clear within 16ms since WDRF bit enables a 16ms watchdog timer -> Boot loop
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MCUSR = 0;
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wdt_disable();
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}
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void HAL_init() {
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// Init Servo Pins
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#define INIT_SERVO(N) OUT_WRITE(SERVO##N##_PIN, LOW)
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#if HAS_SERVO_0
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INIT_SERVO(0);
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#endif
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#if HAS_SERVO_1
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INIT_SERVO(1);
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#endif
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#if HAS_SERVO_2
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INIT_SERVO(2);
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#endif
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#if HAS_SERVO_3
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INIT_SERVO(3);
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#endif
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}
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void HAL_reboot() {
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#if ENABLED(USE_WATCHDOG)
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while (1) { /* run out the watchdog */ }
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#else
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void (*resetFunc)() = 0; // Declare resetFunc() at address 0
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resetFunc(); // Jump to address 0
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#endif
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}
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#if ENABLED(SDSUPPORT)
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#include "../../sd/SdFatUtil.h"
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int freeMemory() { return SdFatUtil::FreeRam(); }
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#else // !SDSUPPORT
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extern "C" {
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extern char __bss_end;
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extern char __heap_start;
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extern void* __brkval;
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int freeMemory() {
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int free_memory;
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if ((int)__brkval == 0)
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free_memory = ((int)&free_memory) - ((int)&__bss_end);
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else
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free_memory = ((int)&free_memory) - ((int)__brkval);
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return free_memory;
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}
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}
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#endif // !SDSUPPORT
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#endif // __AVR__
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