/**
  **************************************************************************************************
  * @file		max7219.h
  * @author		Kerem Yollu & Edwin Koch
  * @date		25.08.2022
  * @version	1.0
  ************************************************************************************************** 
  * @brief	
  *				
  * **Detailed Description :**
  *
  * @todo 
  **************************************************************************************************
*/

#ifndef _PF8574_H_
#define _PF8574_H_

#ifdef __cplusplus
extern "C" {
#endif

#include "i2c.h"
#include "delay.h"

#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 uint8_t sur une ligne
#define TOTAL_CHAR_CAP 				20 

uint16_t lcd_init(i2c_t *i2c_dev); 
void lcd_write_char(i2c_t *i2c_dev, uint8_t charvalue); 
void lcd_display_string(i2c_t *i2c_dev, uint8_t line, uint8_t pos, uint8_t* charvalue, uint8_t lenght);
void lcd_write(i2c_t *i2c_dev, uint8_t cmd, uint8_t mode); 
void lcd_write_4bits(i2c_t *i2c_de, uint8_t data); 

#ifdef __cplusplus
}
#endif

#endif /* MAIN_H */