timer.c

/*********************************************

This program was produced by the

CodeWizardAVR V1.23.5 Evaluation

Automatic Program Generator

?Copyright 1998-2002 HP InfoTech s.r.l.

http://www.hpinfotech.ro

e-mail:office@hpinfotech.ro , hpinfotech@xnet.ro

Project :

Version :

Date : 2003-06-25

Author :

Company :

Comments:

Chip type : ATmega128

Program type : Application

Clock frequency : 16.000000 MHz

Memory model : Small

Internal SRAM size : 4096

External SRAM size : 0

Data Stack size : 1024

*********************************************/

#include <mega128.h>

#include <stdio.h>

unsigned char led_status=0x00;

char sbuf[20];

// Alphanumeric LCD Module functions

#asm

.equ __lcd_port=0x1B

#endasm

#include <lcd.h>

// 타이머를 초기화 하는 함수를 만든다.

// CPU 메뉴얼 "ATmega128((L)" 102페이지를 참조

void init_timer(void){

TCNT0=-255; /* 64usec * 255 = 16.32 msec period */

TCCR0=7; /* CK(16MHz)/1024 = 15.625kHz : 64usec */

TIMSK |= 1; /* TOIE0 = 1 */

}

// Timer 0 overflow interrupt service routine

interrupt [TIM0_OVF] void timer0_ovf_isr(void)

{

TCNT0=-255; /* 64usec * 255 = 16.32 msec period */

// move the LED

led_status++;

//if(led_status>0x01)

// led_status==0x00;

sprintf(sbuf,"led_status: %02X",led_status);

lcd_gotoxy(0,1);

lcd_puts(sbuf);

// turn on the LED

if(led_status>0x80)

PORTB=0x00;

else

PORTB=0xff;

//PORTB=led_status;

}

// Declare your global variables here

void main(void)

{

// Declare your local variables here

// Input/Output Ports initialization

// Port A initialization

// Func0=In Func1=In Func2=In Func3=In Func4=In Func5=In Func6=In Func7=In

// State0=T State1=T State2=T State3=T State4=T State5=T State6=T State7=T

PORTA=0x00;

DDRA=0x00;

// Port B initialization

// Func0=Out Func1=Out Func2=Out Func3=Out Func4=Out Func5=Out Func6=Out Func7=Out

// State0=0 State1=0 State2=0 State3=0 State4=0 State5=0 State6=0 State7=0

PORTB=0x00;

DDRB=0xFF;

// Port C initialization

// Func0=In Func1=In Func2=In Func3=In Func4=In Func5=In Func6=In Func7=In

// State0=T State1=T State2=T State3=T State4=T State5=T State6=T State7=T

PORTC=0x00;

DDRC=0x00;

// Port D initialization

// Func0=In Func1=In Func2=In Func3=In Func4=In Func5=In Func6=In Func7=In

// State0=T State1=T State2=T State3=T State4=T State5=T State6=T State7=T

PORTD=0x00;

DDRD=0x00;

// Port E initialization

// Func0=In Func1=In Func2=In Func3=In Func4=In Func5=In Func6=In Func7=In

// State0=T State1=T State2=T State3=T State4=T State5=T State6=T State7=T

PORTE=0x00;

DDRE=0x00;

// Port F initialization

// Func0=In Func1=In Func2=In Func3=In Func4=In Func5=In Func6=In Func7=In

// State0=T State1=T State2=T State3=T State4=T State5=T State6=T State7=T

PORTF=0x00;

DDRF=0x00;

// Port G initialization

// Func0=In Func1=In Func2=In Func3=In Func4=In

// State0=T State1=T State2=T State3=T State4=T

PORTG=0x00;

DDRG=0x00;

// Timer/Counter 0 initialization

// Clock source: System Clock

// Clock value: 16000.000 kHz

// Mode: Normal top=FFh

// OC0 output: Disconnected

TCCR0=0x01;

ASSR=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.

// OC1C output: Discon.

// Noise Canceler: Off

// Input Capture on Falling Edge

TCCR1A=0x00;

TCCR1B=0x00;

TCNT1H=0x00;

TCNT1L=0x00;

OCR1AH=0x00;

OCR1AL=0x00;

OCR1BH=0x00;

OCR1BL=0x00;

OCR1CH=0x00;

OCR1CL=0x00;

// Timer/Counter 2 initialization

// Clock source: System Clock

// Clock value: Timer 2 Stopped

// Mode: Normal top=FFh

// OC2 output: Disconnected

TCCR2=0x00;

ASSR=0x00;

TCNT2=0x00;

OCR2=0x00;

// Timer/Counter 3 initialization

// Clock source: System Clock

// Clock value: Timer 3 Stopped

// Mode: Normal top=FFFFh

// OC3A output: Discon.

// OC3B output: Discon.

// OC3C output: Discon.

TCCR3A=0x00;

TCCR3B=0x00;

TCNT3H=0x00;

TCNT3L=0x00;

OCR3AH=0x00;

OCR3AL=0x00;

OCR3BH=0x00;

OCR3BL=0x00;

OCR3CH=0x00;

OCR3CL=0x00;

// External Interrupt(s) initialization

// INT0: Off

// INT1: Off

// INT2: Off

// INT3: Off

// INT4: Off

// INT5: Off

// INT6: Off

// INT7: Off

EICRA=0x00;

EICRB=0x00;

EIMSK=0x00;

// Timer(s)/Counter(s) Interrupt(s) initialization

TIMSK=0x01;

ETIMSK=0x00;

// Analog Comparator initialization

// Analog Comparator: Off

// Analog Comparator Input Capture by Timer/Counter 1: Off

// Analog Comparator Output: Off

ACSR=0x80;

SFIOR=0x00;

// LCD module initialization

lcd_init(16);

init_timer();

// Global enable interrupts

#asm("sei")

//PORTB=led_status;

PORTB=0x00;

sprintf(sbuf,"START");

lcd_gotoxy(0,0);

lcd_puts(sbuf);

while (1)

{

// Place your code here

};

}

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