91 lines
2.6 KiB
C++
91 lines
2.6 KiB
C++
|
/* **************************************************************************
|
||
|
|
|
||
|
|
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 Teensy32 (MK20DX256)
|
||
|
|
*/
|
||
|
|
|
||
|
|
#ifdef __MK20DX256__
|
||
|
|
|
||
|
|
#include "HAL.h"
|
||
|
|
#include "../Delay.h"
|
||
|
|
|
||
|
|
#include <Wire.h>
|
||
|
|
|
||
|
|
uint16_t HAL_adc_result;
|
||
|
|
|
||
|
|
static const uint8_t pin2sc1a[] = {
|
||
|
|
5, 14, 8, 9, 13, 12, 6, 7, 15, 4, 0, 19, 3, 31, // 0-13, we treat them as A0-A13
|
||
|
|
5, 14, 8, 9, 13, 12, 6, 7, 15, 4, // 14-23 (A0-A9)
|
||
|
|
31, 31, 31, 31, 31, 31, 31, 31, 31, 31, // 24-33
|
||
|
|
0+64, 19+64, 3+64, 31+64, // 34-37 (A10-A13)
|
||
|
|
26, 22, 23, 27, 29, 30 // 38-43: temp. sensor, VREF_OUT, A14, bandgap, VREFH, VREFL. A14 isn't connected to anything in Teensy 3.0.
|
||
|
|
};
|
||
|
|
|
||
|
|
/*
|
||
|
|
// disable interrupts
|
||
|
|
void cli(void) { noInterrupts(); }
|
||
|
|
|
||
|
|
// enable interrupts
|
||
|
|
void sei(void) { interrupts(); }
|
||
|
|
*/
|
||
|
|
|
||
|
|
void HAL_adc_init() {
|
||
|
|
analog_init();
|
||
|
|
while (ADC0_SC3 & ADC_SC3_CAL) {}; // Wait for calibration to finish
|
||
|
|
NVIC_ENABLE_IRQ(IRQ_FTM1);
|
||
|
|
}
|
||
|
|
|
||
|
|
void HAL_clear_reset_source(void) { }
|
||
|
|
|
||
|
|
uint8_t HAL_get_reset_source(void) {
|
||
|
|
switch (RCM_SRS0) {
|
||
|
|
case 128: return RST_POWER_ON; break;
|
||
|
|
case 64: return RST_EXTERNAL; break;
|
||
|
|
case 32: return RST_WATCHDOG; break;
|
||
|
|
// case 8: return RST_LOSS_OF_LOCK; break;
|
||
|
|
// case 4: return RST_LOSS_OF_CLOCK; break;
|
||
|
|
// case 2: return RST_LOW_VOLTAGE; break;
|
||
|
|
}
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
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;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
void HAL_adc_start_conversion(const uint8_t adc_pin) { ADC0_SC1A = pin2sc1a[adc_pin]; }
|
||
|
|
|
||
|
|
uint16_t HAL_adc_get_result(void) { return ADC0_RA; }
|
||
|
|
|
||
|
|
#endif // __MK20DX256__
|