// MCU BASIC: https://www.basic4mcu.com
// DateTime : 2018-12-18 오후 11:53:15
// by Ok-Hyun Park
//
#include <mega128.h>
#include <stdlib.h>
//
unsigned int ms=0;
//
char Ran,score,fnd_val=0;
//
void sleep(unsigned int elapsed_time){
  char flag=0,swit,i=0;
  ms=0;
  while(ms<elapsed_time){
    swit=~PINC;
    if(swit){      // 스위치 입력이 있으면
      if(flag==0){ flag=1;
        if(swit==Ran){
          score+=0x05;
          if(score>99){ score=0; fnd_val=score;
            for(i=0;i<10;++i){ PORTF=0; delay_ms(100); PORTF=0xFF; delay_ms(100); } // LED 10번 점멸
          }
          else{ fnd_val=score; delay_ms(1000); } // 점수 표시
        }
      }
    }
    else{ flag=0; }
    //
    fnd_val=score;
  }
}
//
char fnd[]={0xC0,0xF9,0xA4,0xB0,0x99,0x92,0x82,0xF8,0x80,0x90,0x88,0x83,0xC6,0xA1,0x86,0x8E}; //애노드
//
interrupt [TIM0_COMP] void timer0_comp_isr(void){ // 1ms
  static char c=0;
  ++ms;
  PORTA=0;
  if(c){ PORTE=fnd[fnd_val/10]; PORTA=1; }
  else { PORTE=fnd[fnd_val/10]; PORTA=2; }
  c^=1;
}
//
void main(void){
  int i;
  //
  PORTD=0xFF;                    // SWITCH
  DDRA=0x03;  DDRE=0xFF;         // SEGMENT // DDRC=0x0F;
  PORTF=0xFF; DDRF=0xFF;         // LED
  TCCR0=0x0C; OCR0=249; TIMSK=2; //16000000/64/(1+249),1ms
  SREG|=0x80;
  while(1){
    Ran=0,score=0;
    for(i=5;i>=0;i--){ fnd_val=i; sleep(1000); } // 5->1 까지 숫자를 출력 // 시작시 카운트
    //
    for(i=0;i<20;++i){// 20번 실행
      Ran=rand()%8; Ran=1<<Ran; PORTF=~Ran; sleep(1000); // LED on  // 0~7 -> 0x01~0x80 난수 // 키 입력체크
      PORTF=0xFF;                        delay_ms(1000); // LED off 
    }
  }
}