/*
Copyright 2022, Savanni D'Gerinel <savanni@luminescent-dreams.com>

This file is part of Savanni's AVR library.

This AVR library 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 AVR library 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 Lumeto. If not, see <https://www.gnu.org/licenses/>.
*/

#ifndef __TIMER_H__
#define __TIMER_H__

#include <avr/io.h>

// ATmega16U4/32U4 Datasheet, table 14.4, page 133
typedef enum {
    normal,
    pwm_phasecorrect_8bit,
    pwm_phasecorrect_9bit,
    pwm_phasecorrect_10bit,
    ctc,
    fast_pwm_8bit,
    fast_pwm_9bit,
    fast_pwm_10bit,
    pwm_phase_and_frequency_correct_icrtop,
    pwm_phase_and_frequency_correct_ocrtop,
    pwm_phase_correct_icrtop,
    pwm_phase_correct_ocrtop,
    ctc_icr,
    fast_pwm_icrtop,
    fast_pwm_ocrtop,
} timer_mode_t;

// Clock prescaler selector, ATmega16U4/32U4 Datasheet, table 14.5, page 1354p
typedef enum {
    none,
    clk_1,
    clk_8,
    clk_64,
    clk_256,
    clk_1024,
    external_falling_edge,
    external_rising_edge,
} clock_select_t;

typedef struct {
    volatile uint8_t count_msb;
    volatile uint8_t count_lsb;
    volatile uint8_t top_msb;
    volatile uint8_t top_lsb;
} timer_16bit_t;

#endif