// MCU BASIC: https://www.basic4mcu.com
// DateTime : 2018-09-29 오후 11:09:43
// by Ok-Hyun Park
//
#include <avr/io.h>
#include <avr/interrupt.h>
#include <stdio.h>
#define F_CPU 16000000UL // 16 MHz
#include <util/delay.h>
#define BYTE unsigned char
//
void write_cmd(char d){
   PORTC=d; PORTG=PORTG&0xf8; _delay_us(1); PORTG|=4; _delay_ms(3);
}
//
void write_data(char d){
   PORTC=d; PORTG=(PORTG&0xf8)|1; _delay_us(1); PORTG|=4; _delay_us(40);  
}
//
void lcd_str(BYTE *s){ while(*s)write_data(*s++); }
void lcd_clear(void){ write_cmd(0x01); }
void set_pos(BYTE y,BYTE x){ write_cmd(0x80+0x40&y+x); }
//
void init_LCD(void){
   _delay_ms(75);
   write_cmd(0x30); write_cmd(0x30); write_cmd(0x30); write_cmd(0x3c);
   write_cmd(0x08); write_cmd(0x01); write_cmd(0x06); write_cmd(0x0c);
}
//
int main(void){
   DDRC=0xff;
   DDRG=0xff; PORTG=4;
   init_LCD();
   while(1){
      set_pos(0,0," Test 2x16 Lcd  ");
      set_pos(1,0,"  Hello World!  ");
      _delay_ms(100);
   }
}