diff --git a/lcd_hd44780.c b/lcd_hd44780.c
index e69de29..d8226d5 100644
--- a/lcd_hd44780.c
+++ b/lcd_hd44780.c
@@ -0,0 +1,49 @@
+#include "lcd_hd44780.h"
+#include <stddef.h>
+void lcd_hd44780_writeToDisp(lcd_hd44780_t *inst){
+	
+	inst->setGetDataIO_event(inst->DataGpio,inst->port_data,LCD_HD44780_SET);
+}
+
+void lcd_hd44780_clearDisp(lcd_hd44780_t *inst){
+
+	return;
+	
+}
+
+void lcd_hd44780_printf(lcd_hd44780_t *inst, char *string){
+	
+	return;
+	
+}
+
+void lcd_hd44780_regDataEvt(lcd_hd44780_t *inst ,void *inst_Data, setGet_DataGpio_Event_fpt getDataEvt_fpt){
+	
+	if(inst == NULL)return;
+	if(inst_Data == NULL)return;
+	
+	
+	inst->DataGpio = inst_Data;
+	inst->setGetDataIO_event = getDataEvt_fpt;
+}
+
+void lcd_hd44780_regConfigEvt(lcd_hd44780_t *inst ,void *inst_Config, setGet_ConfigGpio_Event_fpt getConfigEvt_fpt){
+	
+	if(inst == NULL)return;
+	if(inst_Config == NULL)return;
+	
+	
+	inst->SettingsGpio = inst_Config;
+	inst->setGetConfigIO_event = getConfigEvt_fpt;
+	
+	return;
+}
+
+void lcd_hd44780_init(lcd_hd44780_t *inst, lcd_hd44780_bitmode bit_mode){
+	
+	inst->port_data = 0x00;
+	inst->bit_mode = bit_mode;
+	
+	return;
+}
+
diff --git a/lcd_hd44780.h b/lcd_hd44780.h
index 1a87b7d..53a1736 100644
--- a/lcd_hd44780.h
+++ b/lcd_hd44780.h
@@ -1,4 +1,57 @@
 #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_BITMODE_8BIT,
+	LCD_BITMODE_4BIT,
+	
+}lcd_hd44780_bitmode;
+
+enum {
+	
+	LCD_HD44780_CLEAR_DISP = 0x1,
+	LCD_HD44780_RETURN_HOME = 0x2,
+	LCD_HD44780_ENTRY_MODE = 0x3,
+	LCD_HD44780_DISP_ONOFF_CTL = 0x4,
+	LCD_HD44780_CURSOR_SHIFT = 0x6,
+	
+};
+
+enum{
+	LCD_HD44780_GET = 0,
+	LCD_HD44780_SET = 1,
+	
+};
+
+typedef int (*setGet_DataGpio_Event_fpt)(void*, uint8_t data_input, uint8_t set_get )reentrant;
+typedef int (*setGet_ConfigGpio_Event_fpt)(void*, uint8_t data_input, uint8_t set_get )reentrant;
+
+typedef struct{
+	
+	void *DataGpio;
+	void *SettingsGpio;
+	setGet_DataGpio_Event_fpt setGetDataIO_event;
+	setGet_ConfigGpio_Event_fpt setGetConfigIO_event;
+	lcd_hd44780_bitmode bit_mode;
+	uint8_t port_data; 
+	uint8_t port_settings;
+	
+	
+}lcd_hd44780_t;
+
+
+void lcd_hd44780_init(lcd_hd44780_t *inst,lcd_hd44780_bitmode bit_mode);
+void lcd_hd44780_regConfigEvt(lcd_hd44780_t *inst , void *inst_Config, setGet_ConfigGpio_Event_fpt getConfigEvt_fpt);
+void lcd_hd44780_regDataEvt(lcd_hd44780_t *inst , void *inst_Data, setGet_DataGpio_Event_fpt getDataEvt_fpt);
+
 #endif /*LCD_HD44780_H_*/