Basic NIOS II interrupt.

Have you implemented the internal irq controller or the VIC?

If the latter, you must use the enhanced interrupt APIs: alt_ic_isr_register

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Have you implemented the internal irq controller or the VIC?

If the latter, you must use the enhanced interrupt APIs: alt_ic_isr_register

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The internal interrupt controller.

Try # include "alt_legacy_irq.h"

although this should be automatically included by alt_irq.h whenever the enhanced irq APIs are not enabled, namely if you don't use the external irq controller.

I am now getting

warning: alt_legacy_irq.h: No such file or directory

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I am now getting

warning: alt_legacy_irq.h: No such file or directory

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Ok....

I included

# include "priv/alt_legacy_irq.h"

Now I get warning.....

"passing argument 3 of 'alt_irq_register' from incompatible pointer type"

Prototype for alt_irq_resgister in priv/alt_legacy_irq.h is

extern int alt_irq_register (alt_u32 id,

void* context,

alt_isr_func handler);

As I said my file calls

alt_irq_register(CODEC_SIMPLE_MASTER_2_0_IRQ_INTERRUPT_CONTROLLER_ID, NULL, codec_isr);

codec_isr is handler and is defined as

static void codec_isr(void * context, alt_u32 id)

{

....

.....

......

}

Search the headers for the definition of alt_isr_func, probably doesn't quite match the function you supplied.

Or my 'trick', add -E to the gcc command file and then open the .o file in a text editor and search through the pre-processed output.

(Might be difficult from the IDE)

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Search the headers for the definition of alt_isr_func, probably doesn't quite match the function you supplied.

Or my 'trick', add -E to the gcc command file and then open the .o file in a text editor and search through the pre-processed output.

(Might be difficult from the IDE)

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From alt_irq.h all I can see is this.

# ifdef ALT_ENHANCED_INTERRUPT_API_PRESENT

typedef void (*alt_isr_func)(void* isr_context);

# else

typedef void (*alt_isr_func)(void* isr_context, alt_u32 id);

# endif

Hmmm...

I'd try removing the u32 parameter and see if the warning goes away.

If that is what the compiler is complaining about you need to sort out whether you should be using the enhanced interrupt api or not.

Eveything will need to be consistent.

I included the line

# undef ALT_ENHANCED_INTERRUPT_API_PRESENT

In my main c file.

The warning went away.

I am rusty on this. Probably a better way of doing this.

The warning might have gone away, but that doesn't mean the actual call (to your ISR) will provide the extra parameter.

I'd guess there is some BSP config option that sets it.