#include <stdio.h>
#include <stdlib.h>
#include <stdint.h>
#include <string.h>
#include <unistd.h>
#include <sys/time.h>
#include <errno.h>
#include <sys/types.h>
#include <limits.h>
#include "../../communication/i2c/i2c.hpp"

// commandes
#define LCD_CLEARDISPLAY			0x01
#define LCD_RETURNHOME   			0x02
#define LCD_ENTRYMODESET			0x04
#define LCD_DISPLAYCONTROL   		0x08
#define LCD_CURSORSHIFT   			0x10
#define LCD_FUNCTIONSET   			0x20
#define LCD_SETCGRAMADDR			0x40
#define LCD_SETDDRAMADDR			0x80

// flags pour mode d'ecriture 
#define LCD_ENTRYRIGHT   			0x00
#define LCD_ENTRYLEFT   			0x02
#define LCD_ENTRYSHIFTINCREMENT		0x01
#define LCD_ENTRYSHIFTDECREMENT 	0x00

// flags pour ecran on/off control
#define LCD_DISPLAYON   			0x04
#define LCD_DISPLAYOFF   			0x00
#define LCD_CURSORON   				0x02
#define LCD_CURSOROFF   			0x00
#define LCD_BLINKON   				0x01
#define LCD_BLINKOFF   				0x00

// flags pour display/decalage curseurr 
#define LCD_DISPLAYMOVE   			0x08
#define LCD_CURSORMOVE   			0x00
#define LCD_MOVERIGHT   			0x04
#define LCD_MOVELEFT   				0x00

// flags pour function set
#define LCD_8BITMODE   				0x10
#define LCD_4BITMODE   				0x00
#define LCD_2LINE   				0x08
#define LCD_1LINE   				0x00
#define LCD_5x1DOTS   				0x04
#define LCD_5x8DOTS   				0x00

//flags pour le rétroeclairage
#define LCD_BACKLIGHT   			0x08
#define LCD_NOBACKLIGHT   			0x00

//Pins de gestion de donées. 
#define EN							0x04 // Enable bit
#define RW			   				0x02 // Read/Write bit
#define RS			 		  		0x01 // Register select bit


//DIfferents mode enre commande est ecriture 
#define CMD_MODE 						0x00
#define CHAR_MODE						0x01

//adresse I2C du controlleur pour LCD 
#define LCD_ADDRS 					0x27

//Nombre max de unsigned char sur une ligne
#define TOTAL_CHAR_CAP 				20 


int  lcd_init(I2C *i2c); 
void lcd_write_char( unsigned char charvalue); 
void lcd_display_string(unsigned char line, unsigned char pos, char* charvalue, unsigned char lenght); 
void ldc_pulse_En(unsigned char data); 
void lcd_write(unsigned char cmd, unsigned char mode); 
void lcd_write_4bits(unsigned char data);