624986d423
The current Marlin implementation relies on a timer interrupt to start the ADC conversion and read it. However in some circumstances the interrupt can be delayed resulting in insufficient time being available for the ADC conversion. This results in a bad reading and false temperature fluctuations. These changes make sure that the conversion is complete (by checking the ADC hardware via the HAL) before reading a value. See: https://github.com/MarlinFirmware/Marlin/issues/11323
176 lines
4.7 KiB
C
176 lines
4.7 KiB
C
/**
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* Marlin 3D Printer Firmware
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*
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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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* Copyright (c) 2015-2016 Nico Tonnhofer wurstnase.reprap@gmail.com
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*
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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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*
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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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*
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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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/**
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* Description: HAL for Teensy 3.5 and Teensy 3.6
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*/
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#ifndef _HAL_TEENSY_H
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#define _HAL_TEENSY_H
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#define CPU_32_BIT
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// --------------------------------------------------------------------------
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// Includes
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// --------------------------------------------------------------------------
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// _BV is re-defined in Arduino.h
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#undef _BV
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#include <Arduino.h>
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// Redefine sq macro defined by teensy3/wiring.h
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#undef sq
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#define sq(x) ((x)*(x))
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#include "../math_32bit.h"
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#include "../HAL_SPI.h"
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#include "fastio_Teensy.h"
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#include "watchdog_Teensy.h"
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#include "HAL_timers_Teensy.h"
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#include <stdint.h>
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#define ST7920_DELAY_1 DELAY_NS(600)
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#define ST7920_DELAY_2 DELAY_NS(750)
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#define ST7920_DELAY_3 DELAY_NS(750)
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// --------------------------------------------------------------------------
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// Defines
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// --------------------------------------------------------------------------
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#undef MOTHERBOARD
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#define MOTHERBOARD BOARD_TEENSY35_36
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#define IS_32BIT_TEENSY (defined(__MK64FX512__) || defined(__MK66FX1M0__))
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#define IS_TEENSY35 defined(__MK64FX512__)
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#define IS_TEENSY36 defined(__MK66FX1M0__)
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#define NUM_SERIAL 1
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#if SERIAL_PORT == -1
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#define MYSERIAL0 SerialUSB
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#elif SERIAL_PORT == 0
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#define MYSERIAL0 Serial
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#elif SERIAL_PORT == 1
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#define MYSERIAL0 Serial1
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#elif SERIAL_PORT == 2
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#define MYSERIAL0 Serial2
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#elif SERIAL_PORT == 3
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#define MYSERIAL0 Serial3
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#endif
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#define HAL_SERVO_LIB libServo
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typedef int8_t pin_t;
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#ifndef analogInputToDigitalPin
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#define analogInputToDigitalPin(p) ((p < 12u) ? (p) + 54u : -1)
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#endif
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#define CRITICAL_SECTION_START uint32_t primask = __get_PRIMASK(); __disable_irq()
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#define CRITICAL_SECTION_END if (!primask) __enable_irq()
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#define ISRS_ENABLED() (!__get_PRIMASK())
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#define ENABLE_ISRS() __enable_irq()
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#define DISABLE_ISRS() __disable_irq()
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#undef sq
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#define sq(x) ((x)*(x))
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#ifndef strncpy_P
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#define strncpy_P(dest, src, num) strncpy((dest), (src), (num))
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#endif
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// Fix bug in pgm_read_ptr
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#undef pgm_read_ptr
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#define pgm_read_ptr(addr) (*((void**)(addr)))
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// Add type-checking to pgm_read_word
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#undef pgm_read_word
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#define pgm_read_word(addr) (*((uint16_t*)(addr)))
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#define RST_POWER_ON 1
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#define RST_EXTERNAL 2
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#define RST_BROWN_OUT 4
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#define RST_WATCHDOG 8
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#define RST_JTAG 16
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#define RST_SOFTWARE 32
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#define RST_BACKUP 64
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/** clear reset reason */
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void HAL_clear_reset_source(void);
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/** reset reason */
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uint8_t HAL_get_reset_source(void);
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FORCE_INLINE void _delay_ms(const int delay_ms) { delay(delay_ms); }
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extern "C" {
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int freeMemory(void);
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}
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// SPI: Extended functions which take a channel number (hardware SPI only)
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/** Write single byte to specified SPI channel */
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void spiSend(uint32_t chan, byte b);
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/** Write buffer to specified SPI channel */
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void spiSend(uint32_t chan, const uint8_t* buf, size_t n);
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/** Read single byte from specified SPI channel */
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uint8_t spiRec(uint32_t chan);
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// ADC
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void HAL_adc_init();
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#define HAL_START_ADC(pin) HAL_adc_start_conversion(pin)
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#define HAL_READ_ADC() HAL_adc_get_result()
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#define HAL_ADC_READY() true
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#define HAL_ANALOG_SELECT(pin) NOOP;
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void HAL_adc_start_conversion(const uint8_t adc_pin);
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uint16_t HAL_adc_get_result(void);
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/*
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uint16_t HAL_getAdcReading(uint8_t chan);
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void HAL_startAdcConversion(uint8_t chan);
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uint8_t HAL_pinToAdcChannel(int pin);
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uint16_t HAL_getAdcFreerun(uint8_t chan, bool wait_for_conversion = false);
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//uint16_t HAL_getAdcSuperSample(uint8_t chan);
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void HAL_enable_AdcFreerun(void);
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//void HAL_disable_AdcFreerun(uint8_t chan);
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*/
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#define GET_PIN_MAP_PIN(index) index
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#define GET_PIN_MAP_INDEX(pin) pin
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#define PARSED_PIN_INDEX(code, dval) parser.intval(code, dval)
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// --------------------------------------------------------------------------
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//
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// --------------------------------------------------------------------------
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#endif // _HAL_TEENSY_H
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