SAM3-P256 User Button 1 issue

[maiorfi]

Hi everybody.

I was playing with a new SAM3-P256 I've just purchased, using Blinky-like standard demo firmware.

Such firmware registers interrupts on both buttons input state change and accordingly activates/deactivates the two user leds blinking state.

Despite demo simplicity, I can't make button1 fire its interrups, since related pin (PA19) never changes its state from high to low. With board off, I verified related components are well connected (i.e. as in schematics). Nevertheless, with board on PA19 is always high, even when pushing button.

Any suggestions? I am currently using Atmel Studio 6.

Thanks!