165 lines
4.9 KiB
C
165 lines
4.9 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 AVR
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*
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* For __AVR__
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*/
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#ifndef _HAL_AVR_H_
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#define _HAL_AVR_H_
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// --------------------------------------------------------------------------
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// Includes
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// --------------------------------------------------------------------------
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#include <stdint.h>
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#include "Arduino.h"
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#include <util/delay.h>
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#include <avr/eeprom.h>
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#include <avr/pgmspace.h>
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#include <avr/interrupt.h>
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#include <avr/io.h>
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#include "fastio_AVR.h"
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#include "watchdog_AVR.h"
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#include "math_AVR.h"
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// --------------------------------------------------------------------------
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// Defines
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// --------------------------------------------------------------------------
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//#define analogInputToDigitalPin(IO) IO
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#ifndef CRITICAL_SECTION_START
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#define CRITICAL_SECTION_START unsigned char _sreg = SREG; cli();
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#define CRITICAL_SECTION_END SREG = _sreg;
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#endif
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// On AVR this is in math.h?
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//#define square(x) ((x)*(x))
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// --------------------------------------------------------------------------
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// Types
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// --------------------------------------------------------------------------
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typedef uint16_t hal_timer_t;
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#define HAL_TIMER_TYPE_MAX 0xFFFF
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typedef int8_t pin_t;
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#define HAL_SERVO_LIB Servo
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// --------------------------------------------------------------------------
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// Public Variables
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// --------------------------------------------------------------------------
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//extern uint8_t MCUSR;
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// --------------------------------------------------------------------------
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// Public functions
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// --------------------------------------------------------------------------
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//void cli(void);
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//void _delay_ms(const int delay);
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inline void HAL_clear_reset_source(void) { MCUSR = 0; }
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inline uint8_t HAL_get_reset_source(void) { return MCUSR; }
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extern "C" {
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int freeMemory(void);
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}
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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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// timers
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#define STEP_TIMER_NUM OCR1A
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#define TEMP_TIMER_NUM 0
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#define TEMP_TIMER_FREQUENCY (F_CPU / 64.0 / 256.0)
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#define HAL_TIMER_RATE ((F_CPU) / 8) // i.e., 2MHz or 2.5MHz
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#define HAL_STEPPER_TIMER_RATE HAL_TIMER_RATE
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#define STEPPER_TIMER_PRESCALE INT0_PRESCALER
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#define HAL_TICKS_PER_US ((HAL_STEPPER_TIMER_RATE) / 1000000) // Cannot be of type double
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#define ENABLE_STEPPER_DRIVER_INTERRUPT() SBI(TIMSK1, OCIE1A)
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#define DISABLE_STEPPER_DRIVER_INTERRUPT() CBI(TIMSK1, OCIE1A)
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#define ENABLE_TEMPERATURE_INTERRUPT() SBI(TIMSK0, OCIE0B)
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#define DISABLE_TEMPERATURE_INTERRUPT() CBI(TIMSK0, OCIE0B)
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//void HAL_timer_start(const uint8_t timer_num, const uint32_t frequency);
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#define HAL_timer_start(timer_num,frequency)
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//void HAL_timer_set_count(const uint8_t timer_num, const uint16_t count);
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#define HAL_timer_set_count(timer, count) timer = (count)
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#define HAL_timer_get_current_count(timer) timer
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//void HAL_timer_isr_prologue(const uint8_t timer_num);
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#define HAL_timer_isr_prologue(timer_num)
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#define HAL_STEP_TIMER_ISR ISR(TIMER1_COMPA_vect)
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#define HAL_TEMP_TIMER_ISR ISR(TIMER0_COMPB_vect)
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#define HAL_ENABLE_ISRs() do { cli(); if (thermalManager.in_temp_isr) DISABLE_TEMPERATURE_INTERRUPT(); else ENABLE_TEMPERATURE_INTERRUPT(); ENABLE_STEPPER_DRIVER_INTERRUPT(); } while(0)
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// ADC
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#ifdef DIDR2
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#define HAL_ANALOG_SELECT(pin) do{ if (pin < 8) SBI(DIDR0, pin); else SBI(DIDR2, pin - 8); }while(0)
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#else
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#define HAL_ANALOG_SELECT(pin) do{ SBI(DIDR0, pin); }while(0)
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#endif
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inline void HAL_adc_init(void) {
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ADCSRA = _BV(ADEN) | _BV(ADSC) | _BV(ADIF) | 0x07;
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DIDR0 = 0;
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#ifdef DIDR2
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DIDR2 = 0;
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#endif
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}
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#define SET_ADMUX_ADCSRA(pin) ADMUX = _BV(REFS0) | (pin & 0x07); SBI(ADCSRA, ADSC)
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#ifdef MUX5
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#define HAL_START_ADC(pin) if (pin > 7) ADCSRB = _BV(MUX5); else ADCSRB = 0; SET_ADMUX_ADCSRA(pin)
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#else
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#define HAL_START_ADC(pin) ADCSRB = 0; SET_ADMUX_ADCSRA(pin)
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#endif
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#define HAL_READ_ADC ADC
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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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#define HAL_SENSITIVE_PINS 0, 1
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#endif // _HAL_AVR_H_
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