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- /* **************************************************************************
-
- 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
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