ATMega16 MCU external interrupt program sharing-EEWORLD

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//Crystal:7.3728MHz, Function: Learn the program of external interrupt 0

#include

#defineLED_COMPORTA^=（1《voidport_init（void）

{

PORT=0x40;

DDRA=0x40;

PORTB=0x00;

DDRB=0x00;

PORTC=0x00;//m103outputonly

DDRC=0x00;

PORTD=0x04;

DDRD=0x00;

ATMega16 MCU external interrupt program sharing

}

#pragmainterrupt_handlerint0_isr:2

voidint0_isr（void）

{

LED_COM;

}

//callthisroutinetoiniTIalizeallperipherals

voidinit_devICes（void）

{

//stoperranTInterruptsunTIlsetup

CLI（）;//dISAbleallinterrupts

port_init（）;

MCUCR=0x00;

GICR=0x40;

TIMSK=0x00;//timerinterruptsources

SEI（）;//re-enableinterrupts

//allperipheralsarenowinitialized

}

voidmain()

{

init_devices（）;

while（1）

{

;

}

Keywords：ATMega16 Reference address：ATMega16 MCU external interrupt program sharing

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