Bobi

Hello,

I want to run a FreeRTOS program on my Netduino plus board. I'm working on the ARM7 uIP demo for IAR (uIP_Demo_IAR_ARM7) that's provided with the FreeRTOS source code. I know that this may be an easy question but I have lost too much time trying to do it on my own. I want to be able to handle PIO button interrupts.
The netduino has an onaboard button (PA29) and I want to initialise and handle the interrupts so that when you press the button the onboard LED (PB23) will turn ON.
I want to achieve this using the provided FreeRTOS at91sam7x256 port. I already have it working with the demos which come from the Atmel site but they use a very different port which fails to work together with the FreeRTOS. I want to use the FreeRTOS port because the main goal of the application will be far different from turning LEDs on and off.

Here is my code:
First in board.h I have defined that LED1 is (1 << 23) and SW1 is (1 << 29).
I have the following interrupt handler, which will turn the onboard LED ON:

void Handler(void)
{
        if( AT91F_PIO_GetInput( AT91C_BASE_PIOA ) & LED1 )
        {
                AT91F_PIO_ClearOutput( AT91C_BASE_PIOA, LED1 );
        }
        else
        {
                AT91F_PIO_SetOutput( AT91C_BASE_PIOA, LED1 );					
        }  
}

And in the prvSetupHardware function I have added the following:

        AT91F_PIO_CfgInput( AT91C_BASE_PIOA, SW1 );
        AT91F_PIO_CfgPullup( AT91C_BASE_PIOA, SW1 );
        AT91F_PIO_CfgInputFilter( AT91C_BASE_PIOA, SW1 );
        
        AT91F_AIC_ConfigureIt(AT91C_BASE_PIOA, AT91C_ID_PIOA, 0x07, 0x0, Handler);
        AT91F_AIC_EnableIt(AT91C_BASE_PIOA, AT91C_ID_PIOA);

And here I am confused about am I initializing the interrupt properly? As long as the button belongs to PA29 I know that I have to use the AT91C_BASE_PIOA when I make the call to AT91F_AIC_ConfigureIt. And here I am not sure about the irq_id parameter. Should it be 29 (as I am using PA29) or should it be AT91C_ID_PIOA? And if its AT91C_ID_PIOA where should I specify that I want to handle intterupts coming from PA29?

Thanks