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Re: How to handle IRQ0 interrupt?
- From: Andrew Lunn <andrew at lunn dot ch>
- To: Neeraja <neeraja dot kothala at gmail dot com>
- Cc: ecos-discuss at ecos dot sourceware dot org
- Date: Thu, 8 Mar 2007 18:39:50 +0100
- Subject: Re: [ECOS] How to handle IRQ0 interrupt?
- References: <9372163.post@talk.nabble.com>
On Thu, Mar 08, 2007 at 02:34:26AM -0800, Neeraja wrote:
>
> 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 ?
>
> 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);
Please show us the code which you use the setup the PIO.
Andrew
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