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
128 lines
3.6 KiB
C
128 lines
3.6 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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*
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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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* Description: HAL for Espressif ESP32 WiFi
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*/
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#ifndef _HAL_ESP32_H
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#define _HAL_ESP32_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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#include <stdint.h>
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#undef DISABLED
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#undef _BV
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#include <Arduino.h>
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#undef DISABLED
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#define DISABLED(b) (!_CAT(SWITCH_ENABLED_, b))
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#include "../math_32bit.h"
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#include "../HAL_SPI.h"
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#include "fastio_ESP32.h"
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#include "watchdog_ESP32.h"
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#include "HAL_timers_ESP32.h"
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// --------------------------------------------------------------------------
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// Defines
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// --------------------------------------------------------------------------
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extern portMUX_TYPE spinlock;
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#define NUM_SERIAL 1
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#define MYSERIAL0 Serial
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#define CRITICAL_SECTION_START portENTER_CRITICAL(&spinlock)
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#define CRITICAL_SECTION_END portEXIT_CRITICAL(&spinlock)
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#define ISRS_ENABLED() (spinlock.owner == portMUX_FREE_VAL)
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#define ENABLE_ISRS() if (spinlock.owner != portMUX_FREE_VAL) portEXIT_CRITICAL(&spinlock)
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#define DISABLE_ISRS() portENTER_CRITICAL(&spinlock)
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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) (*(addr))
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// --------------------------------------------------------------------------
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// Types
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// --------------------------------------------------------------------------
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typedef int16_t pin_t;
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// --------------------------------------------------------------------------
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// Public Variables
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// --------------------------------------------------------------------------
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/** result of last ADC conversion */
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extern uint16_t HAL_adc_result;
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// --------------------------------------------------------------------------
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// Public functions
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// --------------------------------------------------------------------------
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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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void _delay_ms(int delay);
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int freeMemory(void);
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void analogWrite(int pin, int value);
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// EEPROM
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void eeprom_write_byte(unsigned char *pos, unsigned char value);
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unsigned char eeprom_read_byte(unsigned char *pos);
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void eeprom_read_block (void *__dst, const void *__src, size_t __n);
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void eeprom_update_block (const void *__src, void *__dst, size_t __n);
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// ADC
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#define HAL_ANALOG_SELECT(pin)
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void HAL_adc_init(void);
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#define HAL_START_ADC(pin) HAL_adc_start_conversion(pin)
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#define HAL_READ_ADC() HAL_adc_result
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#define HAL_ADC_READY() true
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void HAL_adc_start_conversion (uint8_t adc_pin);
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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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// Enable hooks into idle and setup for HAL
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#define HAL_IDLETASK 1
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#define HAL_INIT 1
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void HAL_idletask(void);
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void HAL_init(void);
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#endif // _HAL_ESP32_H
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