Lpc2000

Hi!

My problem is: how to make an application with EINT0 assigned to FIQ.
I try with someting like below - but it does not work.
The source of interrupt is a pushbutton.
I use IAR EWARM Kickstart compiler.

A fragment of code with init procedure:

  ...
  VICIntSelect = 0x4000;   // Select EINT0 as FIQ.
  VICIntEnable = 0x4000;   // Enable EINT0 interrupt.
  PINSEL1 = 0x00000001;    // configure P0.16 pin as EINT0.
  ...

A code with FIQ handler:

  ...
  EXTINT = 0x01;       // Try to reset external interrupt flag.
  if (!(EXTINT & 0x01))// Check if flag was reset (button not pressed.
  {
    AND I CAN NOT REACH THIS POINT
  }
  ...

What I may say - something is working - after pushing interrupt
button program hangs.

Robert