Membuat Program Keypad dengan Codevisionavr

Membuat Program Keypad dengan Codevisionavr


#include
#include

// Alphanumeric LCD Module functions
#asm
.equ __lcd_port=0x15 ;PORTC
#endasm
#include

// Declare your global variables here
unsigned char key;

unsigned char keypad()
{
PORTA=0b11111100;
if(PINA.5==0) return ('1');
if(PINA.6==0) return ('2');
if(PINA.7==0) return ('3');

PORTA=0b11111010;
if(PINA.5==0) return ('4');
if(PINA.6==0) return ('5');
if(PINA.7==0) return ('6');

PORTA=0b11110110;
if(PINA.5==0) return ('7');
if(PINA.6==0) return ('8');
if(PINA.7==0) return ('9');

PORTA=0b11101110;
if(PINA.5==0) return ('*');
if(PINA.6==0) return ('0');
if(PINA.7==0) return ('#');
}
void main(void)
{
// Declare your local variables here

// Input/Output Ports initialization
// Port A initialization
// Func7=In Func6=Out Func5=Out Func4=Out Func3=Out Func2=Out Func1=Out Func0=Out
// State7=T State6=0 State5=0 State4=0 State3=0 State2=0 State1=0 State0=0
PORTA=0xFE;
DDRA=0x1F;

// Port B initialization
// Func7=In Func6=In Func5=In Func4=In Func3=In Func2=In Func1=In Func0=In
// State7=T State6=T State5=T State4=T State3=T State2=T State1=T State0=T
PORTB=0x00;
DDRB=0x00;

// Port C initialization
// Func7=In Func6=In Func5=In Func4=In Func3=In Func2=In Func1=In Func0=In
// State7=T State6=T State5=T State4=T State3=T State2=T State1=T State0=T
PORTC=0x00;
DDRC=0x00;

// Port D initialization
// Func7=In Func6=In Func5=In Func4=In Func3=In Func2=In Func1=In Func0=In
// State7=T State6=T State5=T State4=T State3=T State2=T State1=T State0=T
PORTD=0x00;
DDRD=0x00;

// Timer/Counter 0 initialization
// Clock source: System Clock
// Clock value: Timer 0 Stopped
// Mode: Normal top=FFh
// OC0 output: Disconnected
TCCR0=0x00;
TCNT0=0x00;
OCR0=0x00;

// Timer/Counter 1 initialization
// Clock source: System Clock
// Clock value: Timer 1 Stopped
// Mode: Normal top=FFFFh
// OC1A output: Discon.
// OC1B output: Discon.
// Noise Canceler: Off
// Input Capture on Falling Edge
// Timer 1 Overflow Interrupt: Off
// Input Capture Interrupt: Off
// Compare A Match Interrupt: Off
// Compare B Match Interrupt: Off
TCCR1A=0x00;
TCCR1B=0x00;
TCNT1H=0x00;
TCNT1L=0x00;
ICR1H=0x00;
ICR1L=0x00;
OCR1AH=0x00;
OCR1AL=0x00;
OCR1BH=0x00;
OCR1BL=0x00;

// Timer/Counter 2 initialization
// Clock source: System Clock
// Clock value: Timer 2 Stopped
// Mode: Normal top=FFh
// OC2 output: Disconnected
ASSR=0x00;
TCCR2=0x00;
TCNT2=0x00;
OCR2=0x00;

// External Interrupt(s) initialization
// INT0: Off
// INT1: Off
// INT2: Off
MCUCR=0x00;
MCUCSR=0x00;

// Timer(s)/Counter(s) Interrupt(s) initialization
TIMSK=0x00;

// Analog Comparator initialization
// Analog Comparator: Off
// Analog Comparator Input Capture by Timer/Counter 1: Off
ACSR=0x80;
SFIOR=0x00;

// LCD module initialization
lcd_init(16);

while (1)
{
// Place your code here
key=keypad();
if(key=='1');
{
lcd_clear();
lcd_gotoxy(0,0);
lcd_putsf("keypad=1");
}
if(key=='2');
{
lcd_clear();
lcd_gotoxy(0,0);
lcd_putsf("keypad=2");
}
if(key=='3');
{
lcd_clear();
lcd_gotoxy(0,0);
lcd_putsf("keypad=3");
}
if(key=='4');
{
lcd_clear();
lcd_gotoxy(0,0);
lcd_putsf("keypad=4");
}
if(key=='5');
{
lcd_clear();
lcd_gotoxy(0,0);
lcd_putsf("keypad=5");
}
if(key=='6');
{
lcd_clear();
lcd_gotoxy(0,0);
lcd_putsf("keypad=6");
}
if(key=='7');
{
lcd_clear();
lcd_gotoxy(0,0);
lcd_putsf("keypad=7");
}
if(key=='8');
{
lcd_clear();
lcd_gotoxy(0,0);
lcd_putsf("keypad=8");
}
if(key=='9');
{
lcd_clear();
lcd_gotoxy(0,0);
lcd_putsf("keypad=9");
}
if(key=='*');
{
lcd_clear();
lcd_gotoxy(0,0);
lcd_putsf("keypad=*");
}
if(key=='#');
{
lcd_clear();
lcd_gotoxy(0,0);
lcd_putsf("keypad=#");
}
if(key=='0');
{
lcd_clear();
lcd_gotoxy(0,0);
lcd_putsf("keypad=0");
}



};
}