Tool/software: Starterware
Hi,
I am setting up analog comparator on CC2541 and everything works but there is an issue: Even when there is no Flag related to the specified interrupt the interrupt service routine is being called?
In software initialization I do this:
EA = 1; // Each interrupt source is individually enabled or disabled by setting its corresponding enable bit.
P0IFG = 0; //Clear interrup flags for PORT0
PICTL = 0x01; //Interrup on fallaing edge of P0
CMPCTL |= CMPCTL_EN; //Enable the comparator for P0_5 & P0_4
P0IEN = 0x20; //Enable PORT0_5 interrupt
P0IE = 1; //Enable PORT0 interrupt
P0IFG = 0; //Clear interrup flags for PORT0
The following is interrupt service routine:
#pragma vector = P0INT_VECTOR
__interrupt void PORT0_ISR(void)
{
P0IE = 0; //Disable PORT0 interrupt
P0IEN = 0x00; //Disable PORT0_5 interrupt
if(P0IFG & 0x20)
pulse_input_counter++;
// Clear PORT0_5 Interrupt Flag
P0IFG = 0;
CMPCTL = 0x02;
P0IE = 1; //Enable PORT0 interrupt
P0IEN = 0x20; //Enable PORT0_5 interrupt
}
Thank you
