// MCU BASIC: https://www.basic4mcu.com
// DateTime : 2019-06-10 오전 9:54:29
// by Ok-Hyun Park
//
int main(void){
  uint8_t ch;
  uint32_t num=0;
  DDRA=0xff;
  PORTA=0;
  fnd_init();
  uart0_init();
  uart0_puts(" hello world \r\n");
  TCCR0=(1<<WGM01)|(1<<CS02)|(1<<CS00);
  OCR0=124;
  TIMSK=(1<<OCIE0);
  sei();
  while(1){
    ch=uart0_getch();
    if('0'<=ch&&ch<='9'){
      ch&=0x0f;
      num%=1000;
      num=num*10+ch;
      fnd_disp_num(num);
    }
  }
}