#ifndef TM1640_HPP
#define TM1640_HPP

#include "driver/gpio.h"
#include <stdint.h>

class TM1640 {
    gpio_num_t clk_pin;
    gpio_num_t dio_pin;
    /// The intensity and display on/off setting.
    uint8_t intensity;

    void bit_delay();
    void start();
    void stop();
    void shift_out(uint8_t data);
    void send(uint8_t* data, size_t len);
public:
    TM1640(gpio_num_t clk_pin, gpio_num_t dio_pin);
    
    /// Initializes the TM1640 7-segment display.
    void init();

    /// Clears the display by setting all segments to off.
    void clear_display();

    /// Sets the segments of a single digit.
    void set_digit(uint8_t digit, uint8_t segments);

    /// Sets the segments of multiple digits starting at `starting_pos`.
    void set_digits(uint8_t starting_pos, uint8_t* segments, size_t len);
    
    /// Sets the intensity from 0-7.
    ///
    /// intensity 0 is still on. To turn the display off, use `set_display`().
    void set_intensity(uint8_t intensity);

    /// Turns the display on or off.
    void set_display(bool on);

    
};




#endif // TM1640_HPP