#ifndef OS_OLED_H
#define OS_OLED_H

#include <stdint.h>
#include <stdbool.h>
#include "driver/gpio.h"
#include "driver/i2c_master.h"
#include "esp_err.h"

#ifdef __cplusplus
extern "C" {
#endif

#define OLED_I2C_PORT           0           /* i2c_port_num_t */
#define OLED_I2C_ADDR           0x3C
#define OLED_PIN_SDA            GPIO_NUM_5
#define OLED_PIN_SCL            GPIO_NUM_6
#define OLED_I2C_FREQ_HZ        400000

#define OLED_WIDTH              72
#define OLED_HEIGHT             40
#define OLED_PAGES              5
#define OLED_BUFFER_SIZE        (OLED_WIDTH * OLED_PAGES)

#ifndef OLED_COLUMN_OFFSET
#define OLED_COLUMN_OFFSET      28
#endif

#define COLOR_BLACK             0
#define COLOR_WHITE             1
#define COLOR_INVERT            2

esp_err_t oled_driver_init(gpio_num_t sda, gpio_num_t scl, uint8_t col_offset);
uint8_t *oled_driver_get_buffer(void);
void oled_driver_clear(void);
void oled_driver_fill(void);
esp_err_t oled_driver_flush(void);
esp_err_t oled_driver_set_contrast(uint8_t contrast);
esp_err_t oled_driver_set_invert(bool invert);
void oled_driver_draw_pixel(int16_t x, int16_t y, uint8_t color);

#ifdef __cplusplus
}
#endif

#endif // OS_OLED_H