119 lines
3.4 KiB
C++
119 lines
3.4 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 Teensy35 (MK64FX512)
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*/
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#if defined(__MK64FX512__) || defined(__MK66FX1M0__)
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#include "HAL.h"
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#include "../shared/Delay.h"
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#include <Wire.h>
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uint16_t HAL_adc_result, HAL_adc_select;
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static const uint8_t pin2sc1a[] = {
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5, 14, 8, 9, 13, 12, 6, 7, 15, 4, 3, 19+128, 14+128, 15+128, // 0-13 -> A0-A13
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5, 14, 8, 9, 13, 12, 6, 7, 15, 4, // 14-23 are A0-A9
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255, 255, 255, 255, 255, 255, 255, // 24-30 are digital only
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14+128, 15+128, 17, 18, 4+128, 5+128, 6+128, 7+128, 17+128, // 31-39 are A12-A20
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255, 255, 255, 255, 255, 255, 255, 255, 255, // 40-48 are digital only
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10+128, 11+128, // 49-50 are A23-A24
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255, 255, 255, 255, 255, 255, 255, // 51-57 are digital only
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255, 255, 255, 255, 255, 255, // 58-63 (sd card pins) are digital only
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3, 19+128, // 64-65 are A10-A11
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23, 23+128,// 66-67 are A21-A22 (DAC pins)
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1, 1+128, // 68-69 are A25-A26 (unused USB host port on Teensy 3.5)
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26, // 70 is Temperature Sensor
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18+128 // 71 is Vref
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};
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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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*/
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void HAL_adc_init() {
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analog_init();
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while (ADC0_SC3 & ADC_SC3_CAL) {}; // Wait for calibration to finish
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while (ADC1_SC3 & ADC_SC3_CAL) {}; // Wait for calibration to finish
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NVIC_ENABLE_IRQ(IRQ_FTM1);
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}
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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 (RCM_SRS0) {
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case 128: return RST_POWER_ON; break;
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case 64: return RST_EXTERNAL; break;
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case 32: return RST_WATCHDOG; break;
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// case 8: return RST_LOSS_OF_LOCK; break;
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// case 4: return RST_LOSS_OF_CLOCK; break;
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// case 2: return RST_LOW_VOLTAGE; break;
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}
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return 0;
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}
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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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void HAL_adc_start_conversion(const uint8_t adc_pin) {
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uint16_t pin = pin2sc1a[adc_pin];
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if (pin == 0xFF) {
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// Digital only
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HAL_adc_select = -1;
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}
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else if (pin & 0x80) {
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HAL_adc_select = 1;
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ADC1_SC1A = pin & 0x7F;
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}
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else {
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HAL_adc_select = 0;
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ADC0_SC1A = pin;
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}
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}
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uint16_t HAL_adc_get_result(void) {
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switch (HAL_adc_select) {
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case 0: return ADC0_RA;
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case 1: return ADC1_RA;
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}
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return 0;
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}
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#endif // __MK64FX512__ || __MK66FX1M0__
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