Re: [ECOS] How to handle IRQ0 interrupt?

[Andrew Lunn <andrew@lunn.ch>]

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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