msp430 external interrupt program-EEWORLD

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Interrupts are everywhere in our lives. The 51 microcontroller has only two external interrupts, while the powerful msp430 has many, such as P1 and P2 ports are all

The driver is as follows:

int main( void )
{
WDTCTL = WDTPW + WDTHOLD;

P2IE |=0x01; //Falling edge trigger
P2IES |=0x01;
P2IE |=0x02;
P2IES |=0x02;
P2IFG &=~0x03;
_BIS_SR(GIE);

}

#pragma vector =PORT2_VECTOR
__interrupt void Port_1(void)
{

if((P2IFG | 0xfe)==0xff)
{

P2IFG &=~0x03;
}
if((P2IFG | 0xfd)==0xff)
{

P2IFG &=~0x03;
}
}

Keywords：msp430 Reference address：msp430 external interrupt program

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