Question

ATMEGA16的程序。为什么定时器中断不起作用？

#include<iom16v.h>
#include<macros.h>
#define uint unsigned int
#define uchar unsigned char
void delay(void);
void timer1_init(void);
uchar table[]={0x7f,0xbf,0xdf,0xef,0xf7,0xfb,0xfd,0xfe};
uchar table1[]={0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,0x7f,0x6f, 0x77,0x7c,0x39,0x5e,0x79,0x71};
uchar table2[]={0,1,2,3,4,5,6,7};
void main(void)
{
DDRA=0xff;
DDRC=0xff;
DDRB=0xff;
timer1_init();
PORTC=0x03;
while(1);
}
void delay(void)
{
uint a,b;
for(a=100;a>0;a--)
for(b=100;b>0;b--);
}
void timer1_init(void)
{
TCCR1B=0x00;//分频
TCNT1H=0X3c;//赋初值
TCNT1L=0Xaf;//赋初值
TIMSK|=BIT(2);//中断使能
SREG|=BIT(7);//总中断开关
}
#pragma interrupt_handler timer1_isr: 9
void timer1_isr(void)
{
uchar i;
i++;
PORTA=table1[i];
PORTB=table[i];
delay();
TCNT1H=0X67;//赋初值
TCNT1L=0X68;//赋初值
}

Answer 1

主程序中没有开中断。
函数名称为SEI（）或者sei()
你试试