Interrupts in arduino Yun

hi

i have problem interrupts in arduino yun.
as understand: after interrupt (interrupt performed when detects rising edge) processor should continue main program in case not.
when press button interrupt executed , program "hangs" in interruption, not return loop ().only after releasing button, program return main loop().


my code looks this:

code: [select]


volatile int count = 0;

void setup()
{
   attachinterrupt(0, inc, rising);                                                           
}


void loop()
{

   // here few functions should performed cyclic

}

void inc()                                            //interrupt function
{
   count = count + 1;                            //variable incremented , program "hangs"
                                                        // @ point, not return loop ();
                                                        //until release button
}


i ask / explanation of why can happen.

i tried code, put blinking led in loop , works normally. maybe problem circuit? have in loop?

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