#ifndef LCD_HD44780_H_
#define LCD_HD44780_H_

#include <stdint.h>

// bit definetions
#define LCD_HD44780_RS 0
#define LCD_HD44780_RW 1
#define LCD_HD44780_E 2

#define LCD_HD44780_WRITE 0
#define LCD_HD44780_READ 1

typedef enum {
	LCD_HD44780_BITMODE_8BIT,
	LCD_HD44780_BITMODE_4BIT,
	
}lcd_hd44780_bitmode;

typedef enum {
	
	LCD_HD44780_CLEAR_DISP = 0x1,
	LCD_HD44780_RETURN_HOME = 0x2,
	LCD_HD44780_ENTRY_MODE = 0x6,
	LCD_HD44780_DISP_ONOFF_CTL = 0xE,
	LCD_HD44780_CURSOR_SHIFT = 0x6,
	LCD_HD44780_FUNCTION_SET = 0x30,
	
}hd44780_cmd_t;

typedef enum{
	LCD_HD44780_SET = 0,
	LCD_HD44780_GET = 1,
	
}hd44780_setGet_t;

typedef enum{
	LCD_HD44780_INSTRUCTION = 0,
	LCD_HD44780_DATA = 1,

}hd44780_InstData_t;

typedef struct{

	uint8_t DB0 : 1;
	uint8_t DB1 : 1;
	uint8_t DB2 : 1;
	uint8_t DB3 : 1;
	uint8_t DB4 : 1;
	uint8_t DB5 : 1;
	uint8_t DB6 : 1;
	uint8_t DB7 : 1;

}hd44780_data_bits_t;

typedef struct {
	
	union{
		uint8_t data_bus : 8;
		hd44780_data_bits_t data_bits;
	};
	hd44780_setGet_t rw_pin : 1;
	uint8_t e_pin : 1;
	hd44780_InstData_t rs_pin :1 ;
	
}hd44780_gpioset_t;

typedef int (*setGet_Gpio_Event_fpt)(hd44780_gpioset_t *data_input, uint8_t set_get);//reentrant;
typedef int (*wait_ms_Event_fpt)(uint32_t delay_ms);//reentrant;

typedef struct{
	
	void *DataGpio;
	void *SettingsGpio;
	setGet_Gpio_Event_fpt setGetGpio_event;
	wait_ms_Event_fpt wait_event;
	lcd_hd44780_bitmode bit_mode;
	hd44780_gpioset_t gpio_data;
	// Flag for showing that init has been done.. After init im using polling Busy Flag instead of delay..
	uint8_t isInit;
	
	
}cm_lcd_hd44780_t;


void lcd_hd44780_init(cm_lcd_hd44780_t *inst,lcd_hd44780_bitmode bit_mode);
void lcd_hd44780_regGpioEvt(cm_lcd_hd44780_t *inst, setGet_Gpio_Event_fpt getGpioEvt_fpt);
void lcd_hd44780_regWaitEvt(cm_lcd_hd44780_t *inst, wait_ms_Event_fpt waitEvt_fpt);

#endif /*LCD_HD44780_H_*/