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- /**
- * Marlin 3D Printer Firmware
- * Copyright (c) 2020 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
- *
- * Based on Sprinter and grbl.
- * Copyright (c) 2011 Camiel Gubbels / Erik van der Zalm
- *
- * 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 <https://www.gnu.org/licenses/>.
- *
- */
-
- /**
- * HAL for Teensy 4.0 / 4.1 (IMXRT1062)
- */
-
- #ifdef __IMXRT1062__
-
- #include "HAL.h"
- #include "../shared/Delay.h"
- #include "timers.h"
-
- #include <Wire.h>
-
- uint16_t HAL_adc_result, HAL_adc_select;
-
- static const uint8_t pin2sc1a[] = {
- 0x07, // 0/A0 AD_B1_02
- 0x08, // 1/A1 AD_B1_03
- 0x0C, // 2/A2 AD_B1_07
- 0x0B, // 3/A3 AD_B1_06
- 0x06, // 4/A4 AD_B1_01
- 0x05, // 5/A5 AD_B1_00
- 0x0F, // 6/A6 AD_B1_10
- 0x00, // 7/A7 AD_B1_11
- 0x0D, // 8/A8 AD_B1_08
- 0x0E, // 9/A9 AD_B1_09
- 0x01, // 24/A10 AD_B0_12
- 0x02, // 25/A11 AD_B0_13
- 0x83, // 26/A12 AD_B1_14 - only on ADC2, 3
- 0x84, // 27/A13 AD_B1_15 - only on ADC2, 4
- 0x07, // 14/A0 AD_B1_02
- 0x08, // 15/A1 AD_B1_03
- 0x0C, // 16/A2 AD_B1_07
- 0x0B, // 17/A3 AD_B1_06
- 0x06, // 18/A4 AD_B1_01
- 0x05, // 19/A5 AD_B1_00
- 0x0F, // 20/A6 AD_B1_10
- 0x00, // 21/A7 AD_B1_11
- 0x0D, // 22/A8 AD_B1_08
- 0x0E, // 23/A9 AD_B1_09
- 0x01, // 24/A10 AD_B0_12
- 0x02, // 25/A11 AD_B0_13
- 0x83, // 26/A12 AD_B1_14 - only on ADC2, 3
- 0x84, // 27/A13 AD_B1_15 - only on ADC2, 4
- #ifdef ARDUINO_TEENSY41
- 0xFF, // 28
- 0xFF, // 29
- 0xFF, // 30
- 0xFF, // 31
- 0xFF, // 32
- 0xFF, // 33
- 0xFF, // 34
- 0xFF, // 35
- 0xFF, // 36
- 0xFF, // 37
- 0x81, // 38/A14 AD_B1_12 - only on ADC2, 1
- 0x82, // 39/A15 AD_B1_13 - only on ADC2, 2
- 0x09, // 40/A16 AD_B1_04
- 0x0A, // 41/A17 AD_B1_05
- #endif
- };
-
- /*
- // disable interrupts
- void cli() { noInterrupts(); }
-
- // enable interrupts
- void sei() { interrupts(); }
- */
-
- void HAL_adc_init() {
- analog_init();
- while (ADC1_GC & ADC_GC_CAL) ;
- while (ADC2_GC & ADC_GC_CAL) ;
- }
-
- void HAL_clear_reset_source() {
- uint32_t reset_source = SRC_SRSR;
- SRC_SRSR = reset_source;
- }
-
- uint8_t HAL_get_reset_source() {
- switch (SRC_SRSR & 0xFF) {
- case 1: return RST_POWER_ON; break;
- case 2: return RST_SOFTWARE; break;
- case 4: return RST_EXTERNAL; break;
- // case 8: return RST_BROWN_OUT; break;
- case 16: return RST_WATCHDOG; break;
- case 64: return RST_JTAG; break;
- // case 128: return RST_OVERTEMP; break;
- }
- return 0;
- }
-
- #define __bss_end _ebss
-
- extern "C" {
- extern char __bss_end;
- extern char __heap_start;
- extern void* __brkval;
-
- // Doesn't work on Teensy 4.x
- uint32_t freeMemory() {
- uint32_t free_memory;
- if ((uint32_t)__brkval == 0)
- free_memory = ((uint32_t)&free_memory) - ((uint32_t)&__bss_end);
- else
- free_memory = ((uint32_t)&free_memory) - ((uint32_t)__brkval);
- return free_memory;
- }
- }
-
- void HAL_adc_start_conversion(const uint8_t adc_pin) {
- const uint16_t pin = pin2sc1a[adc_pin];
- if (pin == 0xFF) {
- HAL_adc_select = -1; // Digital only
- }
- else if (pin & 0x80) {
- HAL_adc_select = 1;
- ADC2_HC0 = pin & 0x7F;
- }
- else {
- HAL_adc_select = 0;
- ADC1_HC0 = pin;
- }
- }
-
- uint16_t HAL_adc_get_result() {
- switch (HAL_adc_select) {
- case 0:
- while (!(ADC1_HS & ADC_HS_COCO0)) ; // wait
- return ADC1_R0;
- case 1:
- while (!(ADC2_HS & ADC_HS_COCO0)) ; // wait
- return ADC2_R0;
- }
- return 0;
- }
-
- bool is_output(uint8_t pin) {
- const struct digital_pin_bitband_and_config_table_struct *p;
- p = digital_pin_to_info_PGM + pin;
- return (*(p->reg + 1) & p->mask);
- }
-
- #endif // __IMXRT1062__
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