Roopretelcham

#ifndef __LCD_H__
#define __LCD_H__

#include "main.h"

#define RS 4
#define RW 5
#define EN 6

#define BUS PORTA
#define CTL PORTC	//control line

void LCD_Init(void);
void LCD_Inst(unsigned char ucInst);
void LCD_Data(unsigned char ucData);
void LCD_STR(const char* cString);

#define	LCD_CLR		0x01
#define	LCD_HOME	0x02
#define	LCD_ENT		0x06	//S:0Shift OFF, I/D:1 Increase Mode
#define	LCD_DSP		0x0f	//D:1 Display On C:1 Cursor on B:1 Blink On
#define	LCD_CUR		0x14	//S/C:0 Shift Cursor OFF R/L:1 
#define	LCD_FUNC	0x38	//DL:1 Data length 8bit  N:1 2Line F:0 Font 5X8

#endif	//__LCD_H__

#include "lcd.h"

void LCD_Init(void)
{
	DDRC = (1<<RS)|(1<<RW)|(1<<EN);	
	DDRA = 0xff;	//C3개, A8개 연다. 
	CTL = (0<<RS)|(0<<RW)|(0<<EN);	
	BUS = 0x00;	

	LCD_Inst(LCD_FUNC);
	LCD_Inst(LCD_DSP);
	LCD_Inst(LCD_ENT);
	LCD_Inst(LCD_CUR);
	LCD_Inst(LCD_CLR);
	LCD_Inst(LCD_HOME);		
}

void LCD_Inst(unsigned char ucInst)
{
	volatile unsigned int uiCnt;

	CTL = CTL & ~(1<<RS);		
	CTL = CTL & ~(1<<RW);	
	CTL = CTL & ~(1<<EN);	
	BUS = ucInst;
	for(uiCnt = 0; 30000>uiCnt; ++uiCnt); //A

	for(uiCnt = 0; 30000>uiCnt; ++uiCnt); //B

	CTL = CTL | (1<<EN);		
	for(uiCnt = 0; 30000>uiCnt; ++uiCnt);	//C

	CTL = CTL & ~(1<<EN);	
	for(uiCnt = 0; 30000>uiCnt; ++uiCnt); //D

	for(uiCnt = 0; 30000>uiCnt; ++uiCnt);	//E		
	
}

void LCD_Data(unsigned char ucData)
{
	volatile unsigned int uiCnt;

	CTL = CTL | (1<<RS);		
	CTL = CTL & ~(1<<RW);	
	CTL = CTL & ~(1<<EN);	
	BUS = ucData;
	for(uiCnt = 0; 30000>uiCnt; ++uiCnt);	//A

	//CTL = CTL | (1<<RS);
	//CTL = CTL & ~(1<<RW);
	//CTL = CTL & ~(1<<EN);
	//BUS = ucData;
	for(uiCnt = 0; 30000>uiCnt; ++uiCnt);	//B

	//CTL = CTL | (1<<RS);
	//CTL = CTL & ~(1<<RW);
	CTL = CTL | (1<<EN);		
	//BUS = ucData;
	for(uiCnt = 0; 30000>uiCnt; ++uiCnt);	//C

	//CTL = CTL | (1<<RS);
	//CTL = CTL & ~(1<<RW);
	CTL = CTL & ~(1<<EN);	
	//BUS = ucData;
	for(uiCnt = 0; 30000>uiCnt; ++uiCnt);	//D

	//CTL = CTL | (1<<RS);
	//CTL = CTL & ~(1<<RW);
	//CTL = CTL & ~(1<<EN);	
	//BUS = ucData;		
	for(uiCnt = 0; 30000>uiCnt; ++uiCnt);	//E
	
}

void LCD_STR(const char* cString)
{
	while(0!=*cString)
		{
			LCD_Data(*cString);	
			++cString;			 
		}
	
}

#ifndef __MAIN_H__	
#define __MAIN_H__	

void Init(void);
void Port_Init(void);
void INT_Init(void);

#define PINA	(*((volatile unsigned char *)0x20))
#define DDRA 	(*((volatile unsigned char *)0x21))
#define PORTA	(*((volatile unsigned char *)0x22))

#define PINC	(*((volatile unsigned char *)0x26))
#define DDRC 	(*((volatile unsigned char *)0x27))
#define PORTC 	(*((volatile unsigned char *)0x28))

#define EICRA 	(*((volatile unsigned char *)0x69))
#define EICRB 	(*((volatile unsigned char *)0x6A))
#define EIMSK 	(*((volatile unsigned char *)0x3D))

#define SREG	(*((volatile unsigned char *)0x5F))

#define INT7 7
#define INT6 6
#define INT5 5
#define INT4 4
#define INT3 3
#define INT2 2
#define INT1 1
#define INT0 0

#define ISC7 6
#define ISC6 4
#define ISC5 2
#define ISC4 0
#define ISC3 6
#define ISC2 4
#define ISC1 2
#define ISC0 0

#define sei()   __asm__ __volatile__ ("sei" ::)	
#define sleep() __asm__ __volatile__ ( "sleep" "\n\t" :: )

void __vector_1(void) __attribute__((signal, used, externally_visible));	
void __vector_2(void) __attribute__((signal, used, externally_visible));	

#endif	//__MAIN_H__

#include "main.h"
#include "lcd.h"

int main(void)
{
	LCD_Init();
	LCD_STR("TEST");
		
	while(1)
	{
	}

	return 0;
}

#ifndef __MAIN_H__ 
#define __MAIN_H__

void Init(void);
void Port_Init(void);
void INT_Init(void);

#define PINA (*((volatile unsigned char *)0x20))
#define DDRA (*((volatile unsigned char *)0x21))
#define PORTA (*((volatile unsigned char *)0x22))

#define EICRA (*((volatile unsigned char *)0x69))
#define EICRB (*((volatile unsigned char *)0x6A))
#define EIMSK (*((volatile unsigned char *)0x3D))

#define SREG (*((volatile unsigned char *)0x5F))

#define INT7 7
#define INT6 6
#define INT5 5
#define INT4 4
#define INT3 3
#define INT2 2
#define INT1 1
#define INT0 0

#define ISC7 6
#define ISC6 4
#define ISC5 2
#define ISC4 0
#define ISC3 6
#define ISC2 4
#define ISC1 2
#define ISC0 0

#define sei()   __asm__ __volatile__ ("sei" ::) //sei(); 어셈블리어로 7번비트만 1로 만듬
#define sleep() __asm__ __volatile__ ( "sleep" "\n\t" :: )

void __vector_1(void) __attribute__((signal, used, externally_visible)); //신호사용 외부호출 INT0.
void __vector_2(void) __attribute__((signal, used, externally_visible)); // INT1.

#endif //__MAIN_H__

#include "main.h"

volatile unsigned int uiState;

int main(void)
{
 volatile unsigned int uiCnt;  
 volatile unsigned int uiloop;
 uiCnt = 0;
 Init();

 uiState = 1;

 while(1)
 {
  PORTA = ((uiCnt/10)<<4)|(uiCnt%10); 
  for(uiloop = 0; uiloop < 45000; ++uiloop); 
  for(uiloop = 0; uiloop < 50000; ++uiloop);

  if(1==uiState)
  {
   ++uiCnt;
  }

  if(uiCnt > 99)  //세그먼트에서 앞자리가 9를 넘어가면 지워지는 이유는 uiCnt가 100을 넘어갔을 때이다. 그래서 if문으로 재정의.
  {
   uiCnt = 0;
  }
 }

 return 0;
}

void Init(void)
{
 INT_Init();
 Port_Init();
}

void Port_Init(void)
{
 DDRA = 0xff;
 PORTA = 0x00; 
}

void INT_Init(void)
{
 EICRA=(3<<ISC0)|(3<<ISC1); // INT0  0000 0011     3 (2진수 11 = rising edge)   INT1도 마찬가지
 EIMSK=(1<<INT0)|(1<<INT1); // INT0,1 Enable
 SREG=SREG|(1<<7); // sei();   전역 인터럽트 활성화
}

void __vector_1(void)
{
 volatile unsigned int uiCnt; 
 uiState = 1;
}

void __vector_2(void)
{
 volatile unsigned int uiCnt;
 uiState = 0;
}

#define DDRA	(*((volatile unsigned char *)0x21))
#define PORTA	(*((volatile unsigned char *)0x22))
#define PINA	(*((volatile unsigned char *)0x20))
#define EICRA	(*((volatile unsigned char *)0x69))
#define EICRB	(*((volatile unsigned char *)0x6A))
#define EIMSK 	(*((volatile unsigned char *)0x3D))
#define SREG 	(*((volatile unsigned char *)0x5F))

#define INT7 7 
#define INT6 6
#define INT5 5 
#define INT4 4
#define INT3 3 
#define INT2 2 
#define INT1 1
#define INT0 0

#define ISC7 6
#define ISC6 4
#define ISC5 2
#define ISC4 0
#define ISC3 6
#define ISC2 4
#define ISC1 2
#define ISC0 0

#define sei()   __asm__ __volatile__ ("sei" ::) //sei(); 어셈블리어로 7번비트만 1로 만듬
#define sleep()	__asm__ __volatile__ ( "sleep" "\n\t" :: )

void __vector_1 (void) __attribute__((signal, used, externally_visible)); //신호 사용,외부 호출



int main(void) 
{
	DDRA=0xFF;
	PORTA=0x00;
	
	EICRA=(3<<ISC0);  // INT0  0000 0011     3 (2진수 11 = rising edge)
	EIMSK=(1<<INT0); // INT0 Enable
	SREG=SREG|(1<<7); // sei(); 와 같음

	while(1)
	{
		sleep();	// cpu 부하를 줄임
	}

	return 0;
}

void __vector_1 (void) // $0002  INT0  외부 인터럽트 요청 
{
	volatile unsigned int uiCnt;
	for(uiCnt = 0; 30000>uiCnt ; ++uiCnt); // 채터링 현상을 s/w적으로 개선하기 위함

	PORTA=~PORTA; // ~은 NOT 연산자, 비트반전 

}