msp430g2553 | msp430 | Interrupt program with GPIO | IP with GPIO | GPIO | msp430 launchpad

Interrupt program with GPIO

Program

//C Program Code for Interrupt Programming with GPIO

#include <msp430g2553.h>

int main(void)

{

WDTCTL = WDTPW | WDTHOLD; // Stop watchdog timer

P1DIR|= BIT0 + BIT6; //configure Port1-->pin0(Red_Led) and Port1-->pin6(Green_Led) as Outputs

P1OUT&= ~(BIT0+BIT6); //Clear any output voltage at pin0(Red_Led) and pin6(Green_Led)

P1DIR&=~BIT3; //configure Port1-->pin3 as Input

P1REN|=BIT3; //Enable Pull_up/Pull_down register for Port1-->Pin3

P1OUT|=BIT3; //Select Pull_up mode for Port1-->Pin3

P1IE|=BIT3; //Enable interrupt on Port1-->Pin3

P1IFG&=~BIT3; //Clear interrupt flag on Port1-->Pin3

P1IES|=BIT3; //Set Interrupt Edge Select on Port1-->Pin3

__bis_SR_register(GIE); //Enable Global Interrupt Enable bit in Status register

while(1); //Wait for interrupt to occur

}

#pragma vector=PORT1_VECTOR //Specify interrupt vector for Port1

__interrupt void GPIO(void) //This is the interrupt service routine

{

P1IFG&=~BIT3; //Clear the interrupt flag(no interrupt pending)

P1IES^=BIT3; //Toggle Edge Select bit to prevent bounce effects

P1OUT^= BIT0+BIT6; //Toggle LEDs

}

MSP430G2553 Overall Documentation given video description

Video 👇