Hard Fault Exception: DMA Interrupt

nickkinchin · ‎2009-06-02

Posted on June 02, 2009 at 09:28

nickkinchin · ‎2011-05-17

Posted on May 17, 2011 at 13:13

Hi,

I have tried the 'DMA\FLASH_RAM' example in the firmware library on a Primer1 and it keeps jumping to the hard fault handler instead of the

DMA1_Channel6_IRQHandler.

It is just supposed to copy an array from flash into an array in RAM.

The DMA operation is carried out and if the DMA_IT_TC interrupt is not enabled then execution continues as normal (it flashed some LEDs).

I have included a copy of the Ride7 project (code-limited version). The source code has been slightly modified from the library version.

If anybody can help I'd be very grateful. Thanks.

Regards, Nick.

[ This message was edited by: nickkinchin on 31-05-2009 19:48 ]

[ This message was edited by: nickkinchin on 31-05-2009 19:49 ]

nickkinchin · ‎2011-05-17

Posted on May 17, 2011 at 13:13

Hi,

I've just noticed that the vector address value at 0x0000_0080 (DMA_Channel6) is equal to 0x00000000. Although I don't yet know why!

So the code is probably OK.

Regards, Nick.

[ This message was edited by: nickkinchin on 31-05-2009 19:50 ]

daviddavid91 · ‎2011-05-17

Posted on May 17, 2011 at 13:13

The solution can be found in your posts:

- DMA_Channel6

- DMA1_Channel6_IRQHandler

Watch out for the names!!! I think, at some places they use DMA1_* somewehere else DMA_*.

Regards,

Michael

nickkinchin · ‎2011-05-17

Posted on May 17, 2011 at 13:13

Hi Michael,

Yes, thanks. I noticed this too and posted it on the the Ride7/ARM forum yesterday (although it's not really a Raisonance problem).

Is it an ST library problem? Where is the latest library and will it be fixed?

I have just fixed my own copy of the lib anyway.

Thanks again for your reply.

Regards, Nick.

[ This message was edited by: nickkinchin on 02-06-2009 13:02 ]