#ifndef LINUXSMARTIE_LCD_H
#define LINUXSMARTIE_LCD_H

#define LCD_LINES 4
#define LCD_COLS 40

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

struct lcd_t {
	int fd;
	uint32_t baud;
	char ccharbuf[8][11];                    // 8 custom chars, each 11 bytes (3 byte command + 8 byte glyph)
	char writebuf[LCD_LINES * LCD_COLS + 8]; // number of chars on the lcd + 2*4 byte set cursor commands
	char port[96];
};

typedef uint8_t lcd_glyph_t[8];

void lcd_close(struct lcd_t *lcd);
void lcd_clear(struct lcd_t *lcd);
void lcd_set_contrast(struct lcd_t *lcd, uint8_t contrast);
void lcd_set_backlight(struct lcd_t *lcd, bool enabled);
void lcd_set_cursor(struct lcd_t *lcd, uint8_t row, uint8_t col);
void lcd_set_custom_char(struct lcd_t *lcd, uint8_t index, const lcd_glyph_t *glyph);
void lcd_write_buf(struct lcd_t *lcd, uint8_t row, uint8_t col, const char *str);
void lcd_writef(struct lcd_t *lcd, uint8_t x, uint8_t y, const char *fmt, ...) __attribute__((format(printf, 4, 5)));
void lcd_clear_buf(struct lcd_t *lcd);
void lcd_flush_buf(struct lcd_t *lcd);
char lcd_bar(struct lcd_t *lcd, uint8_t char_id, double value);
int lcd_init(struct lcd_t *lcd);

#endif