>From: Neeraja <neeraja.kothala@gmail.com>
>To: ecos-discuss@ecos.sourceware.org
>Subject: [ECOS] How to handle IRQ0 interrupt?
>Date: Thu, 8 Mar 2007 02:34:26 -0800 (PST)
>
>
>Hi,
>     I am working on at91rm9200 board. I want to catch the interrupt when 
the
>button is pressed which is connected to IRQ0 line.
>   But what is happening is that when I run the application the interrupt 
isr
>is being called always irrespective of the button press.
>
>Can anyone suggest me how to configure so that the interrupt comes only 
when
>the button is pressed ?
>
I think it's hardware related..you have to assign interrupt number 0 to 
indicate the press of button
>Here is the part of the code I am using
>
>interrupt = CYGNUM_HAL_INTERRUPT_IRQ0;
>cyg_interrupt_create(interrupt,
>                              0,                     // Priority - what 
goes
>here?
>                              (cyg_addrword_t)0,     //  Data item passed 
to
>interrupt handler
>                              (cyg_ISR_t *)IRQ0_isr,
>                              (cyg_DSR_t *)IRQ0_dsr,
>                              &interrupt_handle,
>                              &interrupt_object);
>
>cyg_interrupt_attach(interrupt_handle);
>cyg_interrupt_acknowledge(interrupt);
>cyg_interrupt_unmask(interrupt);
>
>Thanks,
>Neeraja.
>
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>
>
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