CC2541-Q1: CC2541 comparator is not working

Hello Vipin,

I tested it successfully on a CC2541EM+SRF05EB. You need to enable interrupt on P0.5. Here is my code:

#pragma vector = P0INT_VECTOR
__interrupt void p0_ISR(void)
{
    /* Note that the order in which the following flags are cleared is important.
       For level triggered interrupts (port interrupts) one has to clear the module
       interrupt flag prior to clearing the CPU interrupt flags. */

    // Clear status flag for pin with R/W0 method, see datasheet.
    P0IFG = ~P0IFG;
    // Clear CPU interrupt status flag for P0.
    P0IF = 0;

    // Toggle SRF05EB LED1.
    P1_0 ^= 1;
}


void main(void) {
    /***************************************************************************
    * Clock setup
    * See basic software example "clk_xosc_cc254x"
    */

    // Set system clock source to HS XOSC, with no pre-scaling.
    CLKCONCMD = (CLKCONCMD & ~(CLKCON_OSC | CLKCON_CLKSPD)) | CLKCON_CLKSPD_32M;
    while (CLKCONSTA & CLKCON_OSC);   //Wait until clock source has changed

    /* Note the 32 kHz RCOSC starts calibrating, if not disabled. */


    // Initialize P1_0 for SRF05EB LED1.
    P1SEL &= ~BIT0;           // Function as General Purpose I/O.
    P1_0 = 1;                 // LED1 on.
    P1DIR |= BIT0;            // Output.


    /*  Enable comparator input pins
    *   P0.5 +
    *   P0.4 -
    */
    APCFG |= 0x30;

    // Clear Port 0 Interrupt flags.
    P0IF = 0;
    P0IFG = 0x00;

    // Interrupt enable on P0.5
    P0IEN = 0x20;

    // Enable CPU Interrupt for Port 0 (IEN1.P0IE = 1).
    P0IE = 1;

    // Enable Global Interrupt by setting the (IEN0.EA = 1).
    EA = 1;

    // Enable the comparator.
    CMPCTL |= 0x02;


    /***********************************************************************
    * Setup powermode
    */
    // Set [SLEEPCMD.MODE] to PM3.
    SLEEPCMD = (SLEEPCMD & ~SLEEPCMD_MODE) | SLEEPCMD_MODE_PM3;

    /* Main Loop, enter/exit Power Mode 3. */
    while(1)
    {
        // Enter powermode
        // Sets PCON.IDLE with a 2-byte boundary assembly instruction.
        // NOTE: Cache must be enabled (see CM in FCTL).
        // This method gives the least current consumption.
        EnterSleepModeProcessInterruptsOnWakeup();
    }
}