ATmega4809.h

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/*
Copyright (C) 2020 Bengt Martensson.
 
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/.
 */
 
#pragma once
 
#define CURRENT_CLASS ATmega4809
 
#define HAS_FLASH_READ      1
#define HAS_HARDWARE_PWM    1
#define HAS_SAMPLING        1
#define HAS_INPUT_CAPTURE   0
 
#define STRCPY_PF_CAST(x) (x)
 
class ATmega4809 : public Board {
public:
    ATmega4809() {
    };
 
private:
 
#ifdef IR_USE_TIMER1
#define TIMER_INTR_NAME      TCB0_INT_vect
 
    void timerReset() {
        TCB0.INTFLAGS = TCB_CAPT_bm;
    };
    //#define TIMER_ENABLE_PWM     (TCB0.CTRLB = TCB_CNTMODE_PWM8_gc)
    //#define TIMER_DISABLE_PWM    (TCB0.CTRLB &= ~(TCB_CNTMODE_PWM8_gc))
 
    void timerEnablePwm() {
        TCB0.CTRLB |= TCB_CCMPEN_bm;
    };
 
    void timerDisablePwm() {
        TCB0.CTRLB &= ~(TCB_CCMPEN_bm);
    };
 
    void timerEnableIntr() {
        TCB0.INTCTRL = TCB_CAPT_bm;
    };
 
    void timerDisableIntr() {
        TCB0.INTCTRL &= ~TCB_CAPT_bm;
    };
 
    void timerConfigHz(frequency_t frequency, dutycycle_t dutyCycle) {
        const uint8_t pwmval = F_CPU / 2U / frequency;
        TCB0.CTRLB = TCB_CNTMODE_PWM8_gc;
        TCB0.CCMPL = pwmval;
        TCB0.CCMPH = pwmval * dutyCycle / 100UL;
        TCB0.CTRLA = TCB_CLKSEL_CLKDIV2_gc | TCB_ENABLE_bm;
    };
 
    void timerConfigNormal() {
        TCB0.CTRLB = TCB_CNTMODE_INT_gc;
        TCB0.CCMP = F_CPU * microsPerTick / 1000000UL;
        TCB0.INTCTRL = TCB_CAPT_bm;
        TCB0.CTRLA = TCB_CLKSEL_CLKDIV1_gc | TCB_ENABLE_bm;
    };
 
#define PWM_PIN  6
 
#elif defined(IR_USE_TIMER2) // ! defined(IR_USE_TIMER1)
 
// TODO... ;-)
#error IR_USE_TIMER2 for this architecture is not yet implemented, sorry.
 
#else // ! defined(IR_USE_TIMER2)
 
#error Config error, either IR_USE_TIMER1 or IR_USE_TIMER2 must be defined.
 
#endif
};