вот полностью , на знаю почему не должна таботать?
/************************************************** ***
Chip type : ATmega8
Program type : Application
Clock frequency : 4,000000 MHz
Memory model : Small
External SRAM size : 0
Data Stack size : 256
************************************************** ***/
#include ‹mega8.h›
int a;
// Alphanumeric LCD Module functions
#asm
.equ __lcd_port=0x12 ;PORTD
#endasm
#include ‹lcd.h›
// Timer 2 overflow interrupt service routine
interrupt [TIM2_OVF] void timer2_ovf_isr(void)
{
a++;
if(a==0x0A)
a=0;
lcd_gotoxy(6,0);
lcd_putchar(48+a);
}
void main(void)
{
PORTB=0xFF;
DDRB=0xC8;
PORTC=0x00;
DDRC=0x3F;
PORTD=0x00;
DDRD=0xFF;
// Timer/Counter 0 initialization
// Clock source: System Clock
// Clock value: Timer 0 Stopped
TCCR0=0x00;
TCNT0=0x00;
// Timer/Counter 1 initialization
// Clock source: System Clock
// Clock value: 4000,000 kHz
// 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=0x01;
TCNT1H=0x00;
TCNT1L=0x00;
ICR1H=0x00;
ICR1L=0x00;
OCR1AH=0x00;
OCR1AL=0x00;
OCR1BH=0x00;
OCR1BL=0x00;
// Timer/Counter 2 initialization
// Clock source: TOSC1 pin
// Clock value: PCK2/128
// Mode: Normal top=FFh
// OC2 output: Set on compare match
ASSR=0x08;
TCCR2=0x35;
TCNT2=0x00;
OCR2=0x00;
// External Interrupt(s) initialization
// INT0: Off
// INT1: Off
MCUCR=0x00;
// Timer(s)/Counter(s) Interrupt(s) initialization
TIMSK=0x40;
// 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);
// Global enable interrupts
#asm("sei")
lcd_gotoxy(6,0);
lcd_putchar(4
;
while (1)
{
};
}
Re: отработка секундного импульса на AVR
