void APP_SwitchChangeNoticed ( void )
{
    uint32_t __attribute__ ((unused)) temp;

    /* Read port to clear mismatch on change notice pins */
    temp = PLIB_PORTS_Read(PORTS_ID_0, APP_CN_PORT_CHANNEL);

    /* Clear the interrupt flag */
    SYS_INT_SourceStatusClear(APP_CN_PORT_INTERRUPT);

    // Test for a switch press transition and ignore switch release
    if (APP_CN_PRESS_EQUALS_1_OR_0 == 0)  // if pressed switch puts 0 on pin
    {
        if ( !((1 << APP_CN_PORT_BIT) & temp))     // if high to low transition
        {
            /* Set flag indicating that a change has been noticed. */
            appData.changeNoticed = true;
        }
    }
    else                                    // pressed switch puts 1 on pin
    {
        if ( (1 << APP_CN_PORT_BIT) & temp)     // if low to high transition
        {
            /* Set flag indicating that a change has been noticed. */
            appData.changeNoticed = true;
        }
    }
}