diff --git a/.gitignore b/.gitignore
index e257658..8fa9acc 100644
--- a/.gitignore
+++ b/.gitignore
@@ -32,3 +32,5 @@
*.out
*.app
+bin/*
+.vscode/*
diff --git a/README.md b/README.md
index bc4791c..fa6aa64 100644
--- a/README.md
+++ b/README.md
@@ -1,2 +1,6 @@
-# lcd
+# AVR LCD Library
+
+Original source
+
+https://www.electronicwings.com/avr-atmega/interfacing-lcd-16x2-in-4-bit-mode-with-atmega-16-32-
diff --git a/lcd.cpp b/lcd.cpp
new file mode 100644
index 0000000..110c87b
--- /dev/null
+++ b/lcd.cpp
@@ -0,0 +1,68 @@
+#include <util/delay.h>
+#include "lcd.h"
+
+namespace lcd {
+ void command(unsigned char cmnd) {
+ LCD_Port = (LCD_Port & 0x0F) | (cmnd & 0xF0); /* sending upper nibble */
+ LCD_Port &= ~ (1<<LCD_RS); /* LCD_RS=0, command reg. */
+ LCD_Port |= (1<<LCD_EN); /* Enable pulse */
+ _delay_us(1);
+ LCD_Port &= ~ (1<<LCD_EN);
+
+ _delay_us(200);
+
+ LCD_Port = (LCD_Port & 0x0F) | (cmnd << 4); /* sending lower nibble */
+ LCD_Port |= (1<<LCD_EN);
+ _delay_us(1);
+ LCD_Port &= ~ (1<<LCD_EN);
+ _delay_ms(2);
+ }
+
+ void put(unsigned char data) {
+ LCD_Port = (LCD_Port & 0x0F) | (data & 0xF0); /* sending upper nibble */
+ LCD_Port |= (1<<LCD_RS); /* LCD_RS=1, data reg. */
+ LCD_Port|= (1<<LCD_EN);
+ _delay_us(1);
+ LCD_Port &= ~ (1<<LCD_EN);
+ _delay_us(200);
+
+ LCD_Port = (LCD_Port & 0x0F) | (data << 4); /* sending lower nibble */
+ LCD_Port |= (1<<LCD_EN);
+ _delay_us(1);
+ LCD_Port &= ~ (1<<LCD_EN);
+ _delay_ms(2);
+ }
+
+ void init(void) {
+ LCD_DDR = (1<<LCD_EN)|(1<<LCD_RS)|0xF0; /* Make LCD port direction as o/p */
+ _delay_ms(20); /* LCD Power ON delay always >15ms */
+ command(0x02); /* send for 4 bit initialization of LCD */
+ command(0x28); /* 2 line, 5*7 matrix in 4-bit mode */
+ command(0x0c); /* Display on cursor off*/
+ command(0x06); /* Increment cursor (shift cursor to right)*/
+ command(0x01); /* Clear display screen*/
+ _delay_ms(2);
+ }
+
+
+ void string (char *str) {
+ int i;
+ for(i=0;str[i]!=0;i++) { /* Send each char of string till the NULL */
+ put(str[i]);
+ }
+ }
+
+ void string_xy (char row, char pos, char *str) {
+ if (row == 0 && pos<16)
+ command((pos & 0x0F)|0x80); /* Command of first row and required position<16 */
+ else if (row == 1 && pos<16)
+ command((pos & 0x0F)|0xC0); /* Command of first row and required position<16 */
+ string(str); /* Call LCD string function */
+ }
+
+ void clear() {
+ command (0x01); /* Clear display */
+ _delay_ms(2);
+ command (0x80); /* Cursor at home position */
+ }
+} // namespace lcd
diff --git a/lcd.h b/lcd.h
new file mode 100644
index 0000000..a394f04
--- /dev/null
+++ b/lcd.h
@@ -0,0 +1,22 @@
+#pragma once
+#include <avr/io.h>
+
+
+#define LCD_Dir DDRA /* Define LCD data port direction */
+#define LCD_DDR DDRA /* Define LCD data port direction */
+#define LCD_Port PORTA /* Define LCD data port */
+#define LCD_Port PORTA /* Define LCD data port */
+#define LCD_RS PA2 /* Define Register Select pin */
+#define LCD_EN PA3 /* Define Enable signal pin */
+
+
+namespace lcd {
+ void command(unsigned char cmnd);
+ void put(unsigned char data);
+ void init();
+ void string(char *str);
+ void string_xy (char row, char pos, char *str);
+ void clear();
+
+
+} // namespace lcd
diff --git a/main.cpp b/main.cpp
new file mode 100644
index 0000000..9af9a69
--- /dev/null
+++ b/main.cpp
@@ -0,0 +1,18 @@
+#define F_CPU 8000000UL /* Define CPU Frequency e.g. here 8MHz */
+#include <avr/io.h> /* Include AVR std. library file */
+#include <util/delay.h> /* Include Delay header file */
+#include "lcd.h"
+
+
+
+
+int main()
+{
+
+ lcd::init(); /* Initialization of LCD*/
+
+ lcd::string("CVR"); /* Write string on 1st line of LCD*/
+ lcd::command(0xC0); /* Go to 2nd line*/
+ lcd::string("Hello World"); /* Write string on 2nd line*/
+ while(1);
+}
\ No newline at end of file
diff --git a/makefile b/makefile
new file mode 100644
index 0000000..4238502
--- /dev/null
+++ b/makefile
@@ -0,0 +1,21 @@
+MCU=atmega32
+F_CPU=8000000
+PROG=dragon_jtag
+CC=avr-g++
+OBJCOPY=avr-objcopy
+CFLAGS=-Wall -g -mmcu=${MCU} -DF_CPU=${F_CPU} -I.
+TARGET=main
+SRCS=*.cpp
+
+default: build flash
+
+build:
+ ${CC} ${CFLAGS} -o bin/${TARGET}.bin ${SRCS}
+ #${CC} ${CFLAGS} -o bin/${TARGET}.elf ${SRCS}
+ ${OBJCOPY} -j .text -j .data -O ihex bin/${TARGET}.bin bin/${TARGET}.hex
+
+flash:
+ avrdude -p ${MCU} -c ${PROG} -U flash:w:bin/main.hex
+
+clean:
+ rm -f bin/*