#pragma once

#include <stdint.h>
#include <stdlib.h>
#include <stdbool.h>

#include <furi_hal_gpio.h>

#ifdef __cplusplus
extern "C" {
#endif

/* helper for easier signal generation */
#define DIGITAL_SIGNAL_MS(x) (x*100000000UL)
#define DIGITAL_SIGNAL_US(x) (x*100000UL)
#define DIGITAL_SIGNAL_NS(x) (x*100UL)
#define DIGITAL_SIGNAL_PS(x) (x/10UL)


typedef struct {
    bool start_level;
    uint32_t edge_cnt;
    uint32_t edges_max_cnt;
    uint32_t* edge_timings;
    uint32_t* reload_reg_buff;
    uint32_t reload_reg_entries;
    uint32_t reload_reg_remainder;
    uint32_t gpio_buff[2];
    const GpioPin* gpio;
} DigitalSignal;

typedef struct {
    uint8_t signals_size;
    uint32_t sequence_used;
    uint32_t sequence_size;
    const GpioPin* gpio;
    DigitalSignal** signals;
    uint8_t* sequence;
} DigitalSequence;


DigitalSignal* digital_signal_alloc(uint32_t max_edges_cnt);
void digital_signal_free(DigitalSignal* signal);
void digital_signal_add(DigitalSignal* signal, uint32_t ticks);
bool digital_signal_append(DigitalSignal* signal_a, DigitalSignal* signal_b);
void digital_signal_prepare(DigitalSignal* signal);
bool digital_signal_get_start_level(DigitalSignal* signal);
uint32_t digital_signal_get_edges_cnt(DigitalSignal* signal);
uint32_t digital_signal_get_edge(DigitalSignal* signal, uint32_t edge_num);
void digital_signal_send(DigitalSignal* signal, const GpioPin* gpio);


DigitalSequence* digital_sequence_alloc(uint32_t size);
void digital_sequence_free(DigitalSequence* sequence);
void digital_sequence_set_signal(DigitalSequence* sequence, uint8_t signal_index, DigitalSignal* signal);
void digital_sequence_add(DigitalSequence* sequence, uint8_t signal_index);
bool digital_sequence_send_signal(DigitalSignal* signal);
bool digital_sequence_send(DigitalSequence* sequence, const GpioPin* gpio);
void digital_sequence_clear(DigitalSequence* sequence);



#ifdef __cplusplus
}
#endif