Hello,
I am following an example on Youtube to implement an ISR to toggle LED, P1.0, through the onboard switch P1.1.
All is good, except the switch bouncing - I am wondering how one can handle debouncing a switch through software, particularly when the action is handled in an interrupt?
Here is my code:
//Begin Main
int main( void )
{
// Stop watchdog timer to prevent time out reset
WDTCTL = WDTPW + WDTHOLD;
P1DIR |= BIT0; // 'Set' P1.0 / LED2 DIR register (1=output)
P1OUT &= ~BIT0; // 'Clear' P1.0 / LED2 OUT register initially (0=low)
P1DIR &= ~BIT1; // Clear P1.1 (SWITCH1; 0=input)
P1REN |= BIT1; // Enable PU/PD resistor
P1OUT |= BIT1; // Sets resistor as PU
P1IES |= BIT1; // Interrupt edge sensitivity set H-to-L
PM5CTL0 &= ~LOCKLPM5; // Unlock digital I/O
P1IE |= BIT1; // Enable P1.1 IRQ
__enable_interrupt(); // Enable maskable IRQs
P1IFG &= ~BIT1; // Clear P1.1 IRQ flag
while (1) {}
return 0;
}
// Set ISRs
#pragma vector = PORT1_VECTOR
__interrupt void ISR_Port1_S1 (void)
{
P1OUT ^= BIT0;
P1IFG &= ~BIT1;
}
