125 lines
4 KiB
C++
125 lines
4 KiB
C++
/* **************************************************************************
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Marlin 3D Printer Firmware
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Copyright (C) 2016 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
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Copyright (c) 2016 Bob Cousins bobcousins42@googlemail.com
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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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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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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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****************************************************************************/
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/**
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* Description: HAL for Arduino Due and compatible (SAM3X8E)
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*
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* For ARDUINO_ARCH_SAM
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*/
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#ifdef ARDUINO_ARCH_SAM
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// --------------------------------------------------------------------------
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// Includes
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// --------------------------------------------------------------------------
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#include "../HAL.h"
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#include <Wire.h>
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// --------------------------------------------------------------------------
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// Externals
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// --------------------------------------------------------------------------
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// --------------------------------------------------------------------------
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// Local defines
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// --------------------------------------------------------------------------
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// --------------------------------------------------------------------------
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// Types
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// --------------------------------------------------------------------------
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// --------------------------------------------------------------------------
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// Variables
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// --------------------------------------------------------------------------
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// --------------------------------------------------------------------------
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// Public Variables
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// --------------------------------------------------------------------------
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uint16_t HAL_adc_result;
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// --------------------------------------------------------------------------
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// Private Variables
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// --------------------------------------------------------------------------
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// --------------------------------------------------------------------------
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// Function prototypes
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// --------------------------------------------------------------------------
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// --------------------------------------------------------------------------
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// Private functions
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// --------------------------------------------------------------------------
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// --------------------------------------------------------------------------
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// Public functions
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// --------------------------------------------------------------------------
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// disable interrupts
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void cli(void) { noInterrupts(); }
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// enable interrupts
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void sei(void) { interrupts(); }
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void HAL_clear_reset_source(void) { }
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uint8_t HAL_get_reset_source(void) {
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switch ((RSTC->RSTC_SR >> 8) & 7) {
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case 0: return RST_POWER_ON; break;
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case 1: return RST_BACKUP; break;
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case 2: return RST_WATCHDOG; break;
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case 3: return RST_SOFTWARE; break;
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case 4: return RST_EXTERNAL; break;
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default:
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return 0;
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}
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}
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void _delay_ms(const int delay_ms) {
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// todo: port for Due?
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delay(delay_ms);
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}
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extern "C" {
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extern unsigned int _ebss; // end of bss section
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}
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// return free memory between end of heap (or end bss) and whatever is current
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int freeMemory() {
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int free_memory, heap_end = (int)_sbrk(0);
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return (int)&free_memory - (heap_end ? heap_end : (int)&_ebss);
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}
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// --------------------------------------------------------------------------
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// ADC
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// --------------------------------------------------------------------------
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void HAL_adc_start_conversion(const uint8_t adc_pin) {
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HAL_adc_result = analogRead(adc_pin);
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}
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uint16_t HAL_adc_get_result(void) {
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// nop
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return HAL_adc_result;
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}
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#endif // ARDUINO_ARCH_SAM
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