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CCS/MSP430FR2433: msp430fr2433

Part Number: MSP430FR2433

Tool/software: Code Composer Studio

Hi, 

I am using PORT Interrupts.

My Program is :

i) P2.7 is connected with switch (Interrupt).

ii) P3.2 is connected with LED.

When switch is pressed, LED will be on.

/*
* PORT2 VECTOR DEFINED=========================================================
*/

#pragma vector=PORT2_VECTOR
__interrupt void Port_2(void)
{
if (P2IFG & 0x80) {
P2IFG &= ~0x80; //P2.7 connected magnetic switch.
pattern=1;
__bic_SR_register_on_exit(LPM3_bits);
}

}

 


/*
* MAIN FUNCTION=================================================================
*/

int main(void)
{
WDTCTL = WDTPW | WDTHOLD; // Stop watchdog timer

///LED DEFINE-----------------------------------------------------
// P3OUT &= ~BIT2; // Clear P1.0 output latch for a defined power-on state
  P3DIR |= BIT2 ; // Set P3.2 to output direction

//PORT INTERRUPT DEFINE------------------------------------------

P2DIR &= ~BIT7; //p7 --magnet, P2DIR &= ~BIT7;
P2IES |= BIT7; 
P2IFG &= ~BIT7;
P2IE |= BIT7;


PM5CTL0 &= ~LOCKLPM5; // Disable the GPIO power-on default high-impedance mode

/

 

//start----------------------------------------------------------------------
while(1)
{
__bis_SR_register(LPM3_bits+GIE);

if(pattern > 0)
{
pattern = 0 ;
P3OUT &= ~BIT2;                                 //LED is working, I tested it without interrupt in my customized board.
__delay_cycles(800000);
P3OUT |= BIT2;
}

}
//return 0;
}

 

Can anyone please tell me,

what mistake I am doing?

so that the Interrupt is not working.

 

Regards,

Srijit. 

 

  • How do you know the interrupt isn't working? Do you reach a breakpoint set at the first line of the ISR?

    What kind of switch is it? Maybe you need a pullup (P2REN+P2OUT). Can it bounce?

    The variable "pattern" should be declared "volatile".

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