//EX13AVR ATmega8A TC2 fast PWM mode //author :QI小米粥//data :2018.3.29#include#includevoid init_tc2(void)
{
DDRB |=BIT(3);//配置OC2引脚为输出
TCCR2 |=BIT(6); //normal 选择
TCCR2 |=BIT(3);
TCCR2 &=~BIT(4);//匹配清零
TCCR2 |=BIT(5);
TCCR2 |=0x07;//1024分频1024Hz
OCR2=0X40;//匹配值为周期的四分之一
ASSR &=~BIT(3);//不选异步时钟
TIMSK |=BIT(7);//匹配中断使能
TIMSK |=BIT(6);//溢出中断使能
SREG |=BIT(7);//开全局中断
}
#pragma interrupt_handler tc2_match:4
void tc2_match(void)
{
}
#pragma interrupt_handler tc2_ov:5
void tc2_ov(void)
{
}
void main(void)
{
init_tc2();
}
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