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Các anh giúp em với!!...
em muốn dùng times0 nhận xung từ ngoài vào đếm đủ 16 xung thì thực hiện chương trình trong ngắt(hiển thị chữ "nhấn đủ rồi" và sáng đèn lightback).
Nhưng em nhấn mãi nó chẳng sảy ra ngắt,
các anh xem giúp em với, chương trình em viết bằng CodeVision.
em muốn dùng times0 nhận xung từ ngoài vào đếm đủ 16 xung thì thực hiện chương trình trong ngắt(hiển thị chữ "nhấn đủ rồi" và sáng đèn lightback).
Nhưng em nhấn mãi nó chẳng sảy ra ngắt,
các anh xem giúp em với, chương trình em viết bằng CodeVision.
Chip type : ATmega8535L
Program type : Application
Clock frequency : 12.000000 MHz
Memory model : Small
External SRAM size : 0
Data Stack size : 128
su dung time0 dem xung ngoai chan T0 hien thi ra man hinh lcd
************************************************** ***/
#include <mega8535.h>
#include<delay.h>
// Alphanumeric LCD Module functions
#asm
.equ __lcd_port=0x15 ;PORTC
#endasm
#include <lcd.h>
int i;
// Timer 0 overflow interrupt service routine
interrupt [TIM0_OVF] void timer0_ovf_isr(void)
{
// Place your code here
PORTC.3=1; //sang den lightback
lcd_init(16);
for (i=0;i<=15;i++)
{
lcd_gotoxy(i,0);
lcd_putsf("Nhan du roi");
delay_ms(50);
lcd_clear();
};
PORTC.3=0; //tat den lightback
}
// Declare your global variables here
void main(void)
{
// Declare your local variables here
// Input/Output Ports initialization
// Port A 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
PORTA=0x00;
DDRA=0x00;
// 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=P ;
PORTB=0x01;
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=P
PORTC=0x01;
DDRC=0x00;
// Port D initialization
// Func7=Out Func6=Out Func5=Out Func4=Out Func3=Out Func2=Out Func1=Out Func0=Out
// State7=0 State6=0 State5=0 State4=0 State3=0 State2=0 State1=0 State0=0
PORTD=0x00;
DDRD=0xFF;
// Timer/Counter 0 initialization
// Clock source: T0 pin Rising Edge
// Mode: CTC top=OCR0
// OC0 output: Clear on compare match
TCCR0=0x2F;
TCNT0=0x00;
OCR0=0x10;
// 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=0x01;
// 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")
while (1)
{
// Place your code here
for (i=0;i<=15;i++)
{
lcd_gotoxy(i,0);
lcd_putsf("Happy new year");
delay_ms(50);
lcd_clear();
};
};
}
Program type : Application
Clock frequency : 12.000000 MHz
Memory model : Small
External SRAM size : 0
Data Stack size : 128
su dung time0 dem xung ngoai chan T0 hien thi ra man hinh lcd
************************************************** ***/
#include <mega8535.h>
#include<delay.h>
// Alphanumeric LCD Module functions
#asm
.equ __lcd_port=0x15 ;PORTC
#endasm
#include <lcd.h>
int i;
// Timer 0 overflow interrupt service routine
interrupt [TIM0_OVF] void timer0_ovf_isr(void)
{
// Place your code here
PORTC.3=1; //sang den lightback
lcd_init(16);
for (i=0;i<=15;i++)
{
lcd_gotoxy(i,0);
lcd_putsf("Nhan du roi");
delay_ms(50);
lcd_clear();
};
PORTC.3=0; //tat den lightback
}
// Declare your global variables here
void main(void)
{
// Declare your local variables here
// Input/Output Ports initialization
// Port A 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
PORTA=0x00;
DDRA=0x00;
// 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=P ;
PORTB=0x01;
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=P
PORTC=0x01;
DDRC=0x00;
// Port D initialization
// Func7=Out Func6=Out Func5=Out Func4=Out Func3=Out Func2=Out Func1=Out Func0=Out
// State7=0 State6=0 State5=0 State4=0 State3=0 State2=0 State1=0 State0=0
PORTD=0x00;
DDRD=0xFF;
// Timer/Counter 0 initialization
// Clock source: T0 pin Rising Edge
// Mode: CTC top=OCR0
// OC0 output: Clear on compare match
TCCR0=0x2F;
TCNT0=0x00;
OCR0=0x10;
// 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=0x01;
// 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")
while (1)
{
// Place your code here
for (i=0;i<=15;i++)
{
lcd_gotoxy(i,0);
lcd_putsf("Happy new year");
delay_ms(50);
lcd_clear();
};
};
}
) 
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