Firmware2/Marlin/src/HAL/HAL_TEENSY35_36/HAL.cpp

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/* **************************************************************************
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Marlin 3D Printer Firmware
Copyright (C) 2016 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
Copyright (c) 2016 Bob Cousins bobcousins42@googlemail.com
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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 Teensy35 (MK64FX512)
*/
#if defined(__MK64FX512__) || defined(__MK66FX1M0__)
#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, 3, 19+128, 14+128, 15+128, // 0-13 -> A0-A13
5, 14, 8, 9, 13, 12, 6, 7, 15, 4, // 14-23 are A0-A9
255, 255, 255, 255, 255, 255, 255, // 24-30 are digital only
14+128, 15+128, 17, 18, 4+128, 5+128, 6+128, 7+128, 17+128, // 31-39 are A12-A20
255, 255, 255, 255, 255, 255, 255, 255, 255, // 40-48 are digital only
10+128, 11+128, // 49-50 are A23-A24
255, 255, 255, 255, 255, 255, 255, // 51-57 are digital only
255, 255, 255, 255, 255, 255, // 58-63 (sd card pins) are digital only
3, 19+128, // 64-65 are A10-A11
23, 23+128,// 66-67 are A21-A22 (DAC pins)
1, 1+128, // 68-69 are A25-A26 (unused USB host port on Teensy 3.5)
26, // 70 is Temperature Sensor
18+128 // 71 is Vref
};
/*
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// disable interrupts
void cli(void) { noInterrupts(); }
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// enable interrupts
void sei(void) { interrupts(); }
*/
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void HAL_adc_init() {
analog_init();
while (ADC0_SC3 & ADC_SC3_CAL) {}; // Wait for calibration to finish
NVIC_ENABLE_IRQ(IRQ_FTM1);
}
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void HAL_clear_reset_source(void) { }
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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;
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// case 8: return RST_LOSS_OF_LOCK; break;
// case 4: return RST_LOSS_OF_CLOCK; break;
// case 2: return RST_LOW_VOLTAGE; break;
}
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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;
}
}
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void HAL_adc_start_conversion(const uint8_t adc_pin) { ADC0_SC1A = pin2sc1a[adc_pin]; }
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uint16_t HAL_adc_get_result(void) { return ADC0_RA; }
#endif // __MK64FX512__ || __MK66FX1M0__