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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>
DefaultSerial MSerial(false);
USBSerialType USBSerial(false, SerialUSB);
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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