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C

/* **************************************************************************
Marlin 3D Printer Firmware
Copyright (C) 2016 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
Copyright (c) 2016 Bob Cousins bobcousins42@googlemail.com
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 <http://www.gnu.org/licenses/>.
****************************************************************************/
/**
* Description: HAL for AVR
*
* For ARDUINO_ARCH_AVR
*/
#ifndef _HAL_AVR_H
#define _HAL_AVR_H
// --------------------------------------------------------------------------
// Includes
// --------------------------------------------------------------------------
#include <stdint.h>
#include "Arduino.h"
#include <util/delay.h>
#include <avr/eeprom.h>
#include <avr/pgmspace.h>
#include <avr/interrupt.h>
#include <avr/io.h>
#include "fastio_AVR.h"
#include "watchdog_AVR.h"
#include "math_AVR.h"
// --------------------------------------------------------------------------
// Defines
// --------------------------------------------------------------------------
//#define analogInputToDigitalPin(IO) IO
#ifndef CRITICAL_SECTION_START
#define CRITICAL_SECTION_START unsigned char _sreg = SREG; cli();
#define CRITICAL_SECTION_END SREG = _sreg;
#endif
// On AVR this is in math.h?
//#define square(x) ((x)*(x))
// --------------------------------------------------------------------------
// Types
// --------------------------------------------------------------------------
#define HAL_TIMER_TYPE uint16_t
#define HAL_TIMER_TYPE_MAX 0xFFFF
#define HAL_SERVO_LIB Servo
// --------------------------------------------------------------------------
// Public Variables
// --------------------------------------------------------------------------
//extern uint8_t MCUSR;
// --------------------------------------------------------------------------
// Public functions
// --------------------------------------------------------------------------
//void cli(void);
//void _delay_ms(int delay);
inline void HAL_clear_reset_source(void) { MCUSR = 0; }
inline uint8_t HAL_get_reset_source(void) { return MCUSR; }
extern "C" {
int freeMemory(void);
}
// eeprom
//void eeprom_write_byte(unsigned char *pos, unsigned char value);
//unsigned char eeprom_read_byte(unsigned char *pos);
// timers
#define STEP_TIMER_NUM OCR1A
#define TEMP_TIMER_NUM 0
#define TEMP_TIMER_FREQUENCY (F_CPU / 64.0 / 256.0)
#define HAL_TIMER_RATE ((F_CPU) / 8.0)
#define HAL_STEPPER_TIMER_RATE HAL_TIMER_RATE
#define STEPPER_TIMER_PRESCALE INT0_PRESCALER
#define ENABLE_STEPPER_DRIVER_INTERRUPT() SBI(TIMSK1, OCIE1A)
#define DISABLE_STEPPER_DRIVER_INTERRUPT() CBI(TIMSK1, OCIE1A)
#define ENABLE_TEMPERATURE_INTERRUPT() SBI(TIMSK0, OCIE0B)
#define DISABLE_TEMPERATURE_INTERRUPT() CBI(TIMSK0, OCIE0B)
//void HAL_timer_start (uint8_t timer_num, uint32_t frequency);
#define HAL_timer_start (timer_num,frequency)
//void HAL_timer_set_count (uint8_t timer_num, uint16_t count);
#define HAL_timer_set_count(timer,count) timer = (count)
#define HAL_timer_get_current_count(timer) timer
//void HAL_timer_isr_prologue (uint8_t timer_num);
#define HAL_timer_isr_prologue(timer_num)
#define HAL_STEP_TIMER_ISR ISR(TIMER1_COMPA_vect)
#define HAL_TEMP_TIMER_ISR ISR(TIMER0_COMPB_vect)
#define HAL_ENABLE_ISRs() do { cli(); if (thermalManager.in_temp_isr)DISABLE_TEMPERATURE_INTERRUPT(); else ENABLE_TEMPERATURE_INTERRUPT(); ENABLE_STEPPER_DRIVER_INTERRUPT(); } while(0)
// ADC
#ifdef DIDR2
#define HAL_ANALOG_SELECT(pin) do{ if (pin < 8) SBI(DIDR0, pin); else SBI(DIDR2, pin - 8); }while(0)
#else
#define HAL_ANALOG_SELECT(pin) do{ SBI(DIDR0, pin); }while(0)
#endif
inline void HAL_adc_init(void) {
ADCSRA = _BV(ADEN) | _BV(ADSC) | _BV(ADIF) | 0x07;
DIDR0 = 0;
#ifdef DIDR2
DIDR2 = 0;
#endif
}
#define SET_ADMUX_ADCSRA(pin) ADMUX = _BV(REFS0) | (pin & 0x07); SBI(ADCSRA, ADSC)
#ifdef MUX5
#define HAL_START_ADC(pin) if (pin > 7) ADCSRB = _BV(MUX5); else ADCSRB = 0; SET_ADMUX_ADCSRA(pin)
#else
#define HAL_START_ADC(pin) ADCSRB = 0; SET_ADMUX_ADCSRA(pin)
#endif
#define HAL_READ_ADC ADC
// --------------------------------------------------------------------------
//
// --------------------------------------------------------------------------
#endif // _HAL_AVR_H