time1._h

Proteus与AVR应用实例,对初学者很有帮助。

//--------------------------27KHzPWM波传产生函数------------------------------//
void timer1_int(void)
{
 DDRD |= 0x30;         // PD5 PD4(OC0)输出  mega16
 //DDRB |= 0x60;         // PB5 PB6(OC0)输出    mega128
 TCCR1B = 0x00; //stop 
 OCR1A = 40;
 OCR1B = 294-40;
 ICR1  = 294;
 TCCR1A = 0xb2;
// 7       6       5       4       3   2   1     0
// COM1A1  COM1A0  COM1B1  COM1B0  NC  NC  WGM11 WGM10 :TCCR1A
// 1       0       1       1       0   0   1     0
 TCCR1B = 0x19; //start Timer
// 7      6      5   4      3      2     1     0
// ICNC1  ICES1  NC  WGM13  WGM12  CS12  CS11  CS10    :TCCR1B
// 0      0      0   1      1      0     0     1     
 
}
//----------------------------------------------------------------------------//
//mega16
#pragma interrupt_handler timer1_compa_isr:7 
//mega128
//#pragma interrupt_handler timer1_compa_isr:13 
void timer1_compa_isr(void)  {}