HAL for DUE architecture

2017-07-19 00:29:06 +01:00
parent 4b16fa3272
commit cfef925559
23 changed files with 2996 additions and 0 deletions
--- a/Marlin/src/HAL/HAL_DUE/HAL_Due.cpp
+++ b/Marlin/src/HAL/HAL_DUE/HAL_Due.cpp
@@ -0,0 +1,124 @@
+/* **************************************************************************
+ 
+ Marlin 3D Printer Firmware
+ Copyright (C) 2016 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
+ Copyright (c) 2016 Bob Cousins bobcousins42@googlemail.com
+   
+ 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/>.
+****************************************************************************/
+
+
+/**
+ * Description: HAL for Arduino Due and compatible (SAM3X8E)
+ *
+ * For ARDUINO_ARCH_SAM
+ */
+
+#ifdef ARDUINO_ARCH_SAM
+
+// --------------------------------------------------------------------------
+// Includes
+// --------------------------------------------------------------------------
+
+#include "../HAL.h"
+
+#include <Wire.h>
+
+// --------------------------------------------------------------------------
+// Externals
+// --------------------------------------------------------------------------
+
+// --------------------------------------------------------------------------
+// Local defines
+// --------------------------------------------------------------------------
+
+// --------------------------------------------------------------------------
+// Types
+// --------------------------------------------------------------------------
+
+// --------------------------------------------------------------------------
+// Variables
+// --------------------------------------------------------------------------
+
+// --------------------------------------------------------------------------
+// Public Variables
+// --------------------------------------------------------------------------
+
+uint16_t HAL_adc_result;
+
+// --------------------------------------------------------------------------
+// Private Variables
+// --------------------------------------------------------------------------
+
+// --------------------------------------------------------------------------
+// Function prototypes
+// --------------------------------------------------------------------------
+
+// --------------------------------------------------------------------------
+// Private functions
+// --------------------------------------------------------------------------
+
+// --------------------------------------------------------------------------
+// Public functions
+// --------------------------------------------------------------------------
+
+// disable interrupts
+void cli(void) { noInterrupts(); }
+
+// enable interrupts
+void sei(void) { interrupts(); }
+
+void HAL_clear_reset_source(void) { }
+
+uint8_t HAL_get_reset_source (void) {
+  switch ((RSTC->RSTC_SR >> 8) & 7) {
+    case 0: return RST_POWER_ON; break;
+    case 1: return RST_BACKUP; break;
+    case 2: return RST_WATCHDOG; break;
+    case 3: return RST_SOFTWARE; break;
+    case 4: return RST_EXTERNAL; break;
+    default:
+      return 0;
+  }
+}
+
+void _delay_ms(int delay_ms) {
+  //todo: port for Due?
+  delay (delay_ms);
+}
+
+extern "C" {
+  extern unsigned int _ebss; // end of bss section
+}
+
+// return free memory between end of heap (or end bss) and whatever is current
+int freeMemory() {
+  int free_memory, heap_end = (int)_sbrk(0);
+  return (int)&free_memory - (heap_end ? heap_end : (int)&_ebss);
+}
+
+// --------------------------------------------------------------------------
+// ADC
+// --------------------------------------------------------------------------
+
+void HAL_adc_start_conversion (uint8_t adc_pin) {
+  HAL_adc_result = analogRead(adc_pin);
+}
+
+uint16_t HAL_adc_get_result(void) {
+  // nop
+  return HAL_adc_result;
+}
+
+#endif // ARDUINO_ARCH_SAM