스마트 컨트롤러

20150318

2015 스마트 콘트롤러/업무일지 2015. 3. 18. 17:45

==========================================================================================

S.C.

=======================================================================================

<<C>>

=extern

<smart.h>

#ifndef __SMART_H__
#define __SMART_H__

extern int A;
extern int B;

void test(void);

#endif //__SMART_H__

<main.c>

#include <stdio.h>
#include "smart.h"

int A = 3;
int B;

int main(void)
{
  printf("main::A = [%d]\n",A);
  printf("main::B = [%d]\n",B);

  test();

  ++A;
  ++B;

  printf("main::A = [%d]\n",A);
  printf("main::B = [%d]\n",B);

  test();

  return 0;
}

<test.c>

#include "smart.h"

void test(void)
{
  printf("test::A = [%d]\n",A);
  printf("test::B = [%d]\n",B);
  return;
}

=static : 협의하지 않은 전역변수 => 분리 (중복방지 / 보안)

#include <stdio.h>
#include "smart.h"

static int A = 3;
int B;

int main(void)
{
  printf("main::A = [%d]\n",A);
  printf("main::B = [%d]\n",B);

  test();

  ++A;
  ++B;

  printf("main::A = [%d]\n",A);
  printf("main::B = [%d]\n",B);

  test();

  return 0;
}

#include "smart.h"

int A = 100;

void test(void)
{
  printf("test::A = [%d]\n",A);
  printf("test::B = [%d]\n",B);
  return;
}

<<AVR>>

=CHARACTER DISPLAY LCD MODULE (판넬 + 제어용칩)

http://www.devicemart.co.kr/1160130

=실습 LED

http://www.pretty-kunze.de/html/lcd.pdf

=smart.h / lcd.h

#ifndef __SMART_H__
#define __SMART_H__

#define  DDRC  (*((volatile unsigned char *)0x34))
#define  PORTC  (*((volatile unsigned char *)0x35))
#define  DDRG  (*((volatile unsigned char *)0x64))
#define  PORTG  (*((volatile unsigned char *)0x65))

#endif // __SMART_H__

#ifndef __LCD_H__
#define __LCD_H__
#include "smart.h"
#define  LCD_BUS  PORTC
#define  LCD_CTL  PORTG

#define  LCD_PIN_RS  0
#define LCD_PIN_RW  1
#define LCD_PIN_EN  2

#endif // __LCD_H__